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Method of development of powerful steeply dipping deposits of unstable ores Method of development of powerful steeply dipping deposits of unstable ores consists of separating the ore body to the floors, and the floors - to the horizontal or gently sloping layers developed in descending order, removal of the ore within the layers with splits, stowing with the hardening materials, drifting of the splits of the second and subsequent layers under the stowing array. When drifting of the splits of the second and subsequent layers under the stowing array with keeping ahead the bottomhole of the split in its sides, represented by unstable ore array, at an angle to the longitudinal axis of the split the holes are drilled. Through the holes while they are ahead of the bottomhole of the split the bonding composition is injected in the rock mass. At that the distance between the holes is taken equal to twice the depth of penetration into the ore array in the vicinity of the hole of the bonding composition, and the length of the holes is determined using the expression. |
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Method of carrying out counter-heading drivage at their breakthrough Method comprises determining the direction of carrying out counter-heading drivage using instrumental method, drilling counter-heading drivage, charging and blasting the holes, airing the bottomhole and removal of the exploded rock mass. In one of the counter-heading drivage the hole is drilled in the center of the bottomhole. Before drilling in the counter-heading drivage opposite to it the direction of counter-heading drivage is additionally determined on the greatest degree of exposure of vibration of the surface of the rock mass by the palm of the hand by applying the palm of the hand to the surface of the rock mass in the center and in other parts of the bottomhole. |
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Device for lifting and feeding cable anchor and device for gripping cable anchor Invention relates to a device for reinforcement the rock material with the cable anchor, also called the guy cable. The device for lifting and feeding the cable anchor comprises a frame and a rotator made with the ability of movement along the said frame, a casing, a pair of spaced wheels made with the ability of interaction with the cable anchor and mounted in the said casing, and means for rotating the wheels, connected with the said wheels with the provision of their rotation and made with the ability of connected to the drilling machine rotator. The device for gripping the cable anchor designed to be secured to the rotator, made with the ability to move together with the said rotator, comprises the means of gripping the cable anchor, having an enlarged part, and means of providing the passing of the said enlarged part through the said device and automatic retention of the cable anchor in the device after its feeding into the said device. |
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Mechanised timber for abrupt layers Mechanised timber comprises base sections made in the form of a pneumatic sliding blade with a number of pneumatic bags as an element of the thrust, linear sections with roof bar, and a shifting mechanism. And the linear section has as an element of the thrust the pneumatic rack which is a polymer film sleeve reinforced with polymer hoops, which rests on the capsule of the apparatus cabinet, and the roof bar of the linear section is covered with an elastic polymer layer. The shifting mechanism consists of two external discs, one of which belongs to goaf fence, and another - the linear sections between which the pneumatic bags are located, and two internal discs with the pneumatic bags between them. And the disc located closer to the goaf fence, is connected by the rods to the capsule of the apparatus cabinet of the linear section and the disc located closer to the linear section, is connected by the rods to the goaf fence. |
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Mechanised second working complex Proposed complex is equipped with powered roof support section displacement jack attachment drives, rood support being displaced to pans of face conveyor with hydraulic cylinders of adjustment at different inclinations of cleanup face line. It allows a permanent location of face conveyor relative to the point of rock transfer to face loading station. It incorporates spacing-sliding transfer mechanism, guard board elongated part and support section shelter turn drive. Note here that support sections with pans are articulated to make triple units with single control unit. Said powered roof support section displacement jack attachment drive is composed of articulated rabbet joint including perforated grooved guide secured to the pan and moving bracket with fixed rabbet-thrust interconnected by adjustment cylinder for mutual displacement. Overlap shelter is equipped on face chest with shutter extension drive to vary cleanup face line position. It is composed of a set of plate articulated by extending rabbet frame to be extended by hydraulic cylinders articulated with rabbet frame and shelter. Rabbets are articulated with said plates. |
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Shaft lining with cast-in-situ concrete Mortar is mechanically activated at disintegrator. Motor is prepared at sinking platform. Crushed stone and motor are laid in layers in jud over lining. |
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Lining of vertical shaft with controlled operating conditions Water conveyance ply including foamed polystyrene granules is arranged between load-bearing layer consisting of concrete with dressing tails activated in disintegrator as the binder, and plugged by rocks, and by availability of anchors fitted in adjacent massif. |
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Installation layer cleanup bottom lining section Proposed lining comprises bed, canopy with extending deflector, two hydraulic props of goaf and face sides and appropriate supports. Two abutments tie the canopy goaf part with the face side supports. Hydraulic jacks are arranged on both lateral sides of the bed while top and bottom barriers are made on goaf side. Besides, it incorporates electrical and hydraulic equipment. Note here that section is integrated with cutting-supplying machine composed by horizontal screw equipped with cutters. Note here that said bed represents a telescopic design. Bed top part between goaf side supports has two lengthwise cut-outs. Bottom part can be extended by hydraulic jacks coupled with top part of the bed. Goaf side bottom barrier is welded and secured by ribs to the bed extending part. Hydraulic jack stroke makes at least that of lining section displacement while stiffness ribs are fitted in aforesaid cut-outs. Canopy is equipped with extra extending deflector arranged on goaf side whereto goaf barrier is welded. Bottom part of said extra extending deflector is provided with process opening to secure detachable brackets to support roll of wire tie or polymer screen. |
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Method of rock massif disintegration by crosswise cuts Rock massif is disintegrated in crosswise direction by heading-and-winning machine planetary-disc actuators It is performed by serial intersecting cuts in radial-tangential and tangential-radial directions made by cutters of disc running in opposite directions. Said discs are set at the angle to plane formed by cutter lengthwise axis and radial direction relative thereto. |
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Several blast holes are drilled over tunnel contour. Then, several blast holes are drilled by diamond drilling at preset points inside said contour. Blast holes are connected by zones cut by diamond discs at fastening the cutting machine in blast holes. Separate blocks are produced to be destructed by wedge jacks. Lower and upper parts of blocks formed between said zones are cut off by diamond cable in the following order: diamond cable is fitted on rotary tool and rollers to be secured inside predrilled blast holes. Note here that said rotary tool is secured opposite said rollers. Then, said rotary tool is activated to make diamond cable move for cutting of blocks. |
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Powered roof support for steep seams Powered roof comprises basic and linear sections. Note here that manipulator with grippers is mounted at basic section base to displace said linear section after face advance and for installation and dismantling works. Besides, basic section goaf guard is composed of sliding pneumatic blade with the set of air cushions makes a thrust element that cuts off rock structures hung above the stull. Linear section incorporates air post as a thrust composed by a polymer film sleeve reinforced by polymer rings to rest on hardware compartment capsule. Linear section beam is coated with resilient polymer ply to facilitate the contact between lining and roof block structures. |
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Internal water impermeable layer is assembled of iron tubing. External load-bearing layer is made from solid mix with activated dressing tails as a binder and classified mining wastes as a coarse and fine filler. External load-bearing layer is bonded with rock massif by the system of anchors. |
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Protection of development entries Proposed method comprises mechanised pre-working and stabilisation in coal massif, protection of opened space against adjacent column by coal post. Compensation cavities are made in virgin massif, nearby bed soil, and separated by coal post. Cavities and coal posts there between on massif side and opened space are arranged in staggered manner. Width, height and depth of cavities are defined on the basis of coal seam mining and geological conditions and heading machine performances. Coal post width between compensation cavities is calculated with due allowance for empirical factor equal to 1.3 at working in virgin massif and equal to 1.6 at working in adjacent column abutment pressure zone, seal depth (post height) and seam cubical compression strength. |
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Method and device for mounting protective nets on tunnel walls or ceilings Present invention is related to a method of installing protective nets on tunnel walls or ceilings. The method of installing the protective nets on the tunnel walls or ceilings at which the protective net in the form of a tape is unwounded from a roll. The roll rotation is controlled by means of the press roller, contacting with the roll surface for unwinding the protective net. In this case the press roller is rotated by means of a control device and moved to the roll in the radial direction. The roll is mechanically moved along the tunnel walls or ceiling. A device for implementing the method is equipped with a holder intended for a shaft attachment on which the roll with the protective net is situated, with the possibility to control the rotation around the shaft by means of the facilities. The protective net which is unwound at each stage is preferably tensioned and fastened mechanically. |
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Mine working reinforcing method and device for its implementation Mine working reinforcing method consists in fixation of anchors on the mine working arch and installation on them of a protection mesh material. Devices, each of which represents a two-arm lever, the arms of which form a blunt angle in the working position, are suspended on a row of anchors fixed on the mine working arch. One arm of each lever is turned about a suspension point, thus pressing the protection mesh material with the other arm to the mine working arch; after that, anchors are fixed under the protected section of the mine working arch. The mine working reinforcing device includes a tie-rod, on the end of which there is a member for suspension to an anchor fixed on the mine working arch, a pair of thrust pins movably connected to the same end of the tie-rod with possibility of being fixed relative to the tie-rod so that a two-arm lever is formed. |
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Invention relates to computer engineering and specifically to a screen display for computing devices which control production processes of complex installations. The installation for extracting coal from the bottom of a mine includes devices for extracting coal from the bottom of a mine, which include a winning machine, a plurality of support units mounted along the bottom and a support control device. The support control device includes a ground-based control device, a computing device for the installation, control devices for the support units, a screen display for rendering instructions, functions, operating conditions, positions and/or functional conditions of the installation. The screen display comprises multiple independent and separate partial screen displays, each associated with a terminal control device which is independent of other control devices of partial screen displays. |
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Method to erect underground structure Invention relates to the method to erect the underground structure, at the same time the method shall provide, if possible, for reliable and quick installation of an underground structure. When erecting an underground structure, a shaft is deepened in the place of erection, which is closed with a slab. In the slab there is a hole, in the area of which a lifting/lowering device is provided. In the shaft in the area of the hole there is a stopping device. In the area of the hole there is a compartment of the structure, which is connected to the lifting/lowering device, lowered through the hole down to the stopping device and stopped. After stopping the device is disconnected from the lifting/lowering device. A process cycle is performed, in which the next compartment of the structure is provided in the area of the hole and connected with the lifting/lowering device and stopping compartment of the structure, then the stopping of the previous compartment is disconnected. Compartments of the structure available in the shaft are lowered until the highest compartment is in the stopping area, and the highest compartment of the structure is stopped. This process cycle is repeated until the compartments required for erection of the underground structure are installed into the shaft. |
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Outer layer is made of shotcrete, the main load-bearing structure is built from reinforced concrete blocks, without connection of the rings between each other, the elements of the water disposal system are passed through the holes in the reinforced concrete blocks, and the steel shell is placed between a layer of high-strength fibre-reinforced concrete and the main load-bearing structure. |
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Section of lining of mining face comprises a base, a floor slab with the hood, hydraulic racks of goaf and bottomhole raw, the supports corresponding to them, jibs connecting the goaf part of the floor slab with the supports of the bottomhole raw, hydraulic jacks of advance mounted on both sides of the base, the upper and lower barriers at the goaf side with technological gaps made in them and electrical and hydraulic equipment. The section is structurally connected to the excavation and a delivery vehicle made in the form of a horizontally oriented auger equipped with a cutter. The upper barrier at the goaf side of the lining section normally to the floor slab the hydraulic cylinders of the jacks are welded supplying additional cutting tool mounted in parallel to the excavation and delivery vehicle, in the floor slab at the goaf side the technological gap is made, in which the additional cutting tool is placed in the starting position. The base is made telescopic - the upper part of the base in the space between the supports of the same raw is made a series of grooved shape with two longitudinal slots, the lower part is made pulled out due to hydraulic jacks connected to the upper part of the base. The lower barrier at the goaf side of the section of lining with welding and reinforcement ribs is connected to the pulled out part of the base, and the amount of stroke of the jacks of pulling out of the base is not less than the advance increment of the section of lining and the reinforcement ribs are inserted into the slots of the upper part of the base. |
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Sinking platform comprises three block platforms connected by props, bin for concrete and bucket funnels. Medium block platform of sinking platform is a movable structure equipped with sliding mounting platform. Two blocks and tackles are suspended from top platform, one to displace tubing over platform periphery and another one to displace in radial direction. Bucket opening of the second block platform is furnished with coverage. |
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Proposed support comprises axially symmetric rectangular-cross-section air shell of two equal parts, pressure-gage and air feed hoses and device to fill and control air overpressure. Note here that said support is equipped with extra axially symmetric rectangular-cross-section air shell of two equal parts, pressure-gage and air feed hoses, independent of the main one and arranged between its parts. Note here that at initial stage, pressure in extra air shell is kept making not over 1/5 of main air shell pressure while extra shell height in as-filled state makes at least 1/3 of the support total height in air-filled state. |
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Development of inclined coal bed Proposed method comprises preparation of mine field by poles on Longwall Retreating on the Strike development system using the mechanised breaking complexes (MBC). Exposing diagonal workings with inclination angles is performed within the specs of minerals conveyors. Coal is excavated in long breaking coal face with reverse stroke with production of mounting chamber, dismantling chamber, complex and inspection at reassembly and wok site. Rock pressure is controlled by rock cover ball in worked-out area. Mine waters are collected at lower points of the mine. Water solution of antipyrogenes is fed in worked-out area. Long walls are developed at mining face line aligned with MBC, mounting chamber, dismantling chamber, and inspection chamber parallel with opening at both forward and back direction of mining face. |
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Invention relates to heading blast digger with safety lining. It comprises intake wedge part with loading module, bin for blast loading, unloading scraper part, self-propulsor, pump station, control board, hydraulic manipulator with drill rig at gantry car displacing over stage loader support. Note here that tail part of blast loading bin accommodates lining placer consisting of two props equipped with mount fork shaped in a definite way. Note here that said shape allows accommodation of fasteners composed of top and bottom sheets of metallic gauze reinforcements and top and bottom sheets of metallic strip grabs shifted relative to each other. Note also that said forks are connected by crosswise bar and arranged to be displaced relative to said props up and down by hydraulic cylinders. Said forks are lifted and lowered by control board. |
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Method of layer mining of high steeply inclined coal bed with extraction of coal from bedding pack Method of layer mining of a high steeply inclined coal seam with extraction of a bedding pack includes preparation of an extraction pillar by arrangement of conveyor and ventilation drifts, preparation of an extraction strip by performance of coal discharge and ventilation mines from the conveyor to the ventilation drifts, withdrawal of the mounting chamber at the coupling of the extraction strip with the ventilation drift with separation of the bed by capacity into two inclined layers, leaving the bedding pack intact. In the mounting chamber on the soil of each layer they mount sections of the support, and on the soil of the layer near the bed roof - a flexible slab in the form of a net, which covers the bedding pack and the section of the support installed on the soil of the bed. Stripping equipment is represented by sections of aggregated support with an actuator. At the same time the actuator is made in the form of a horizontally aligned drum with teeth. At the goaf side each section is equipped with an additional cutting element for cutting of a weakening slot. Extraction and transportation of the broken coal along the line of the working face is carried out in inclined layers near the roof and the bed soil with auger actuators of aggregated sections of the support. The bedding pack is divided into sections as the working face of the layer is shifted near the bed soil by cutting of weakening slots above each section of the support, is damaged by pressure of collapsed rocks behind the slab and released into the working space of the layer near bed soil in the space between the stands of the support sections. Stands of the support sections are installed on the soil of the bed. |
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Method to install subway lines When installing subway lines, before tunnelling station and running tunnels in the beginning and end of specified zones, they form installation and deinstallation chambers for a double-rotor tunnelling mechanised complex (DRTMC), which is used to tunnel the zone of running tunnels and 3-4 station complexes. At the same time the shield is entered to the level of the zone of the station complex in the installation chamber, and upon completion of tunnelling it is taken out through the deinstallation chamber and is further transferred to the next zone of formation of the station complex. |
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Invention relates to the field of mining and may be used in construction of various vertical underground mines. The proposed method for laying concrete behind tubbing lining of the vertical mine includes a sequence of operations performed by means of equipment installed on a vertically moved sinking platform. During the method the following is performed: reception of a concrete mix into at least one hopper; installation of at least one channel of concrete mix feed behind the tubbing lining by means of a hydraulic drive; injection of a concrete mix with required movement of the position of the specified channel by means of the hydraulic drive. The complex of equipment for laying concrete behind the tubbing lining of the vertical mine is also installed onto the vertically moved sinking platform. At the same time the sinking platform is provided for works related to assembly of the tubbing lining. The proposed method of equipment includes: at least one hopper to receive a concrete mix with a concrete pump; at least one channel of concrete mix feed behind the tubbing lining; at least one hydraulic manipulator to control position of the specified channel. |
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Powered support for steep slopes Invention relates to mining industry, in particular, to the field of powered supporting of stope faces during extraction of coal from steep beds of high and average thickness. The powered support comprises a support base, comprising bottomhole and goaf beams with barriers and strut stands, connected to each other by tails from special profile, and linear sections, each of which comprises a beam, a block, an equipment compartment, and also strut, haulage and correction elements. At the same time the equipment compartment comprises two capsules with a hatch and a manhole, and also a technological hatch and windows for supply of a laser or an ultrasonic device to a bottomhole, between which the capsules are fixed by lock devices, and have manholes are provided for communication. Under the equipment compartment there is a haulage and stabilisation unit, comprising a body, the bottom of which has a bulge in the form of a block. Roller supports are fixed directly to the body of the haulage block at both sides, and the roller supports comprise a bracket with a hydraulic jack of normal stabilisation and a spring shock absorber, and a carriage with rollers as capable of their movement in slots of the special profile of tails. Above the equipment compartment there is a block of a vaulted section with a hole for an air duct. In the centre of the vaulted section there is a pneumatic lift with a spinning device. Besides, the strut element comprises a beam and pneumatic cushions, arranged in the jacket on a support slab mounted on the stem of the pneumatic lift. And the support base comprises cross beams that extend towards bed rise and fall with extension jacks and hydraulic stands of a strut of double support extension. |
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Section of powered support of working face of thick bed with forced coal extraction Section of a powered support of a working face of a thick bed with forced coal extraction comprises a slab hingedly connected to a fence at its one side, a base hingedly connected to the fence at its other side, hydraulic props connected to the base and slab, advancing rams installed on the base. In the fence there is a rectangular opening that narrows in direction from the space behind the support to the working space of the support. At the same time the opening is closed with hydraulic jacks of cover control and is hingedly connected to the fence. In the cover in the space between hydraulic jacks of control there is a hole with the possibility of rotation in the vertical plane. Also in the cover there is a perforator, directed with an actuating element towards the opening. In the opening section there is a chute installed with vertically oriented boards and bottom. The chute is made of three metal sheets, installed in series along with the travel of transported material as overlapping each other. To the bottomhole edge of the first and second sheets there is a thick-walled scraper welded, which is oriented along the normal line to the plane of the following sheet. In the boards of the chute symmetrically to its axis, in parallel to the plane of the second sheet and below it there are slots, where fingers of the second sheet are inserted, being welded to it perpendicularly to the axis of the chute along the edges. At the bottom the second sheet is connected to the boards of the chute by means of a hydraulic jack of movement along the slots. At the same time the angle of inclination of the first sheet of the chute bottom to the horizon is more than in the second one, and in the second one - more than in the third one. |
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Method to prepare and mine reserves of minefields Method includes extraction of coal in a long working face by retraction, ventilation of the working face, control of mining pressure by damage of roof rocks in the mined space, collection of minefields in the lower points of the mine and supply of aqueous solution of antipyrogene into the mined space. Extraction pillars are mined in turns with reverse and forward strokes. In advance they erect a dismantling technical inspection and installation chambers coaxially. The longwall mechanised equipment set - LMES - is driven into the dismantling chamber without a thrust at the chamber roof. The elements of the set are moved in blocks by three from the dismantling chamber into the installation one, on the way they do routine maintenance as the blocks move in the technical inspection chamber, at the same time they use movement mechanisms of thrust-sliding-sliding type with autonomous power supply to each block. The mechanism of movement of thrust-sliding-sliding type they use the same sections of the LMES support and their interconnection via movement cylinders with the appropriate chute of the longwall face conveyor. For the period of dismantling they create n autonomous blocks of three with alternate movement of 3 sections of the support without thrust relative to 3 chutes that serve as a stiff beam. |
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Drilling, blasting and mechanical method for speed arrangement of underground mines in strong rocks Method is performed using facilities of simultaneous drilling of boreholes with increased speeds of feed and rotation of bits and intensive washing of boreholes first in 2 vertical sectors, then, after rotation of a drilling faceplate by 90 degrees, in 2 horizontal sectors. After removal of the drilling faceplate from the bottomhole, the charging faceplate is fed with injectors-stems, and then boreholes are automatically charged with explosive substance, and explosion is initiated. |
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Method to expand tunnel relates to mining, namely: tunnelling, tunnels or mines with supports or without them; methods or devices for their tunnelling, planning of tunnels or mines with additional drilling and cutting devices. The method includes drilling of boreholes by a stiff tool, formation of ridges by means of serial cutting of both at least two strips and cutting of ridges. Cutting of strips that form ridges and cutting of ridges is done by a diamond rope, which is placed onto a rotary tool and rollers, which are then fixed inside the boreholes drilled previously along the design contour. The rotary tool is fixed at the side opposite to the rollers, afterwards the rotary tool is driven. Boreholes are drilled along the design contour, made of points connected in pairs, at the bottom and top with serial displacement aside by a certain pitch. For cutting of strips they use at least two boreholes arranged at one level or at different levels. For cutting of ridges they use at least two cut strips arranged perpendicularly or at a certain angle to each other. |
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Method to reinforce defective lining of tunnel Invention relates to the field of construction, namely, to methods of repair of subway tunnels arranged in complicated mining and geological conditions. The method to reinforce defective lining of the tunnel, which was subject to subsidence due to unstable and waterlogged base, consists in strengthening of a track bed and lining of the tunnel. Strengthening of the track bed and lining of the tunnel is carried out by resting a track bed onto a layer of underlying dense soils, arranged at the depth under the layer of unstable and waterlogged soil. The support of the tunnel lining onto the layer of underlying dense soils is carried out by arrangement of rows of soil and cement piles, the head of which is fixed in a concrete base of the track bed, and the base is arranged in the layer of underlying dense soils. |
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Hydraulic support with variable resistance and energy recovery Hydraulic support with variable resistance and energy recovery includes a hydraulic prop with a safety valve and a hydraulic lock connected to its piston cavity, and a hydraulic control unit. Between the piston cavity of the hydraulic prop and a pressure line there installed is a multiplying gear consisting of a housing, big and small pistons rigidly attached to each other with a stock, chambers of big and small pistons and an intermediate chamber located between them. Besides, the device includes an adjustable throttle and two check valves, which are installed between the multiplying gear and the pressure line. The chamber of the large piston of the multiplying gear is connected to the pressure line through two parallel lines, in one of which an adjustable throttle and a check valve is installed in series, and in the other line a check valve is installed. The chamber of the small piston of the multiplying gear is connected to the piston cavity of the hydraulic prop, and the intermediate chamber of the multiplying gear is connected to atmosphere through a compensation opening. |
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Erection method of a liner of inclined or horizontal shafts provides for construction in the inclined or horizontal shaft of the mine working of a supporting frame with scaffolding for performance of work, which forms at least two parts corresponding to the arch surface. The following is performed during work execution: anchors are installed, which fix the frame in the mine working shaft; a set of screw turnbuckles determining the design position of the arch is fixed on the scaffolding and in upper part of the arch bottom; a set of jacks determining the design position of the arch is fixed on the scaffolding and in the lower part of the arch bottom. A sheet bottom of the arch is fixed on the supporting frame; a shield bottom of a tray is suspended on movable beams of the supporting frame; laying of concrete mixture, dismantling of the formwork and movement of the supporting frame in inclined or horizontal shaft of the mine working is performed. |
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Erection method of earthquake resistant concrete support Erection method of an earthquake resistant concrete support involves opening driving, installation of a formwork and erection of a concrete lining. In the opening there pre-installed is an anchor support, on which there performed is subsequent installation of a coating adjacent to the opening rock outline and made from low-modulus material performing a function of an earthquake resistant screen. Then, a frame of a dismountable and movable shield formwork is attached to perform the concrete support erection. Besides, in order to exclude stiff contact of ends of anchor rods with the concrete lining at seismic movements, rubber casings are put on rod ends. |
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Control method of shield of tunnel boring complex, and tracking system for its implementation Control method of a shield of a tunnel boring complex consists in the fact that the shield is controlled in two planes by means of control systems in vertical and horizontal planes. By means of measurement equipment there determined are inclination angles of an actuating element relative to vertical and horizontal planes, signals as per speed of change of the inclination angle relative to vertical and horizontal planes, linear displacements in vertical and horizontal planes, and speeds of change of linear displacement in vertical and horizontal planes. The above signals are supplied to a control unit as per four coordinates, where they are compared to the task; after that, based on error signals, a relay control law of the actuating element is created. The invention also proposes a tracking control system of the shield of the tunnel boring complex, which includes the following in-series connected components: an optic direction setting device, a beam deviation unit, a membrane, a photoelectric receiving device and a four-coordinate control unit the input of which is connected to an inclination angle measurement unit. In addition, the device includes a state observer unit the input of which is connected to the inclination angle measurement unit and the output of which is connected to the control unit. |
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Device to connect supply pipe to inner channel of anchor bolt Device comprises a central unit, made as movable for levelling with an anchor bolt, a sliding supply pipe, arranged in the central unit, the first force transmitter, a gripping device to attach the central unit to the anchor bolt, a drive of the gripping device, in sliding manner installed on the central unit and designed to control the gripping device, and the second force transmitter, at the same time the first force transmitter is made as capable of pressing the supply pipe into the hole of the inner channel of the anchor bolt, the gripping device is installed on the central unit, and the second force transmitter is arranged with the possibility to control the drive of the gripping device for clamping of the central unit with the gripping device on the anchor bolt. |
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Cable roof bolting of high load-bearing capacity There proposed is an anchoring rod that consists of three cables, each of which in its turn consists of several strands twisted between themselves. Note that inside the rod along its whole length between the cables there are mounted bracings, above which there fixed are the bands pressing the cables to the bracings. At the bottom-hole end of the anchor rod there made is an expansion unit. At the tail end of the anchor there is a shank with three holes of cylindrical shape becoming conical at the bottom, in which there attached are the cables in cutting wedges manner, and at the external surface of the shank there is a thread for tension nut. There is a binding mixture supply tube passing through the shank centre, and at the shank top there is a supporting washer. The supporting washer has a side hole, through which there supplied is a sealer and air discharge tube goes out; the air discharge tube also goes between two cables of anchor rod up to its top part. Between the tension nut and supporting washer there is an insert of semi-spherical shape without internal thread. |
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Lockless anchor includes a rod with a shank, an additional rod and a support plate, a washer and a tension nut, which are installed on the shank. Rods are flexible and installed at an angle to mining surface. Besides, rods are directed crosswise to each other. Rods are braced by their tightening through the washer with the tension nut till the support plate is tightly pressed to the rock. |
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Hydraulically-assisted support with throttling direction control valve and energy recovery Hydraulically-assisted support with a throttling direction control valve and energy recovery includes a hydraulic prop with a safety valve and a hydraulic lock, which are connected to its piston cavity, and a control hydraulic unit connected to delivery and drain main lines. Between piston cavity of hydraulic prop and delivery main line there installed is a throttling direction control valve consisting of a body with three holes, large, average and small pistons rigidly attached to each other with a stock, as well as four chambers formed with the above pistons. Chamber of small piston is connected through the lower hole to piston cavity of hydraulic prop, and through the side hole made so that it overlaps the small piston to the delivery main line. Chamber of large piston is connected through the upper hole to the delivery main line, and upper and lower adjacent chambers of average piston are connected to each other with a check valve and a throttle, which are installed on average piston. |
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Shaft lining, complex for its erection and method of its erection Steel-concrete lining of a cylindrical shaft is made as floating of two concentrically arranged steel cylinders with a tight bottom. Cylinders are mounted from two-ring steel sections fixed to each other along the length of the steel lining. The bottom of the lining, the space behind the lining and the space between steel walls of the outer and inner cylinders of this lining is concreted to form a solid steel-concrete cylinder of higher strength and hydraulic insulation. The construction complex includes a motor crane, a mobile drilling rig moving by rails, an airlift system for drilling, a system of multiple cleaning from sludge and supply of a washing fluid into a shaft, a hoist for lifting and lowering of steel structures, a mounting table and an aligning conductor for mounting of circular sections and steel lining, a rolling machine for steel sheets into cylindrical segments, and an electric welding equipment or station. |
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Protective shield creation method Protective shield creation method at driving of a tunnel under earth fill consists in stepped forcing of tubular sections and excavation of rock from them. Prior to the next section forcing, a sector is cut out in the preceding section from its inner cavity by the value of a forcing step and the forces section is installed in the above cut-out. Each section is made in the form of tubes with cut-out sectors within 90รท120 degrees and connected to each other on edges of the cut-out sectors. |
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Tunnelling machine includes a frame with caterpillar trucks, a tray, an actuating element with a telescope, a conveyor, a buffer device, and a control panel, which are fixed on it. With that, the machine frame is provided with a telescopic pushing device with a power cylinder and a buffer with a support cylinder and brackets for fixation of support beams with holes for anchor bolts and an installation place of anchor posts into the mine working roof. Extension value of an extensible part of the pushing device is divisible by the value of telescope of the actuating element and mine working support pitch. The control panel of the telescopic pushing device is combined with the machine control panel and interconnected with the machine operation. Besides, the machine buffer devices can be equipped with a telescopic part and combined along the machine frame axis in the pusher housing with an axial partition wall. The telescopic pushing device can be made in the form of telescopic cylinders using support beams with holes for anchoring to mine working ground, thus compensating the divergence of planes in support places of the machine caterpillar trucks and its support beams to the mine working ground. |
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Hydraulic accumulating power plant comprises a pond located on the earth surface, a water intake facility, a vertical shaft of a discharge water conduit, a communication shaft, aeration shafts, a vertical shaft of power discharge, a turbine room with aggregate blocks, a bottom pond with the main chambers and an inclined transport tunnel. The bottom pond additionally comprises short tunnels, connecting galleries, a switching chamber, discharge connecting water conduits and a distribution chamber. The main chambers of the bottom pond are made in the form of spirally arranged tunnels of round cross section in plan and are connected to each other by means of connecting galleries. Aggregate blocks of the plant unit by means of suction pipes and short tunnels are connected with the distribution chamber, which in its turn is connected with the main chambers of the bottom pond with the help of discharge connecting water conduits. The method for tunnelling of the bottom pond includes tunnelling of the main inclined transport tunnel from the surface to the underground structures with the help of a tunnelling mechanised complex and erection of the main chambers of the bottom pond. When the bottom pond main chambers are tunnelled, the switching chamber is arranged to redistribute rock discharge during tunnelling and to reduce length of rock discharge along a conveyor. |
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Method to install blast expansion anchor Blast expansion anchor is inserted into a well head by serially connected sections of pipes and arranged on the section of potential caving of side rocks. A section of a detonating cord with a detonating cap of instant action is inserted into the cavity of the blast expansion anchor, a drilling head is installed. Then the section of the well between its head and the drilling head is filled with an explosive, installing a detonating cap of moderate action. The section of the detonating cord is exploded 1-2 seconds ahead of explosion of the explosive. |
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Method consists in determination of maximum value of convergence of country rocks with account of the design service life of the secured mine, determination of the value of the necessary minimum gap between the beam of the support and rocks of the mine roof, installation of a metal framed support, which is attached to soil by anchors, installation of a pliant element between the beam of the framed support and roof rocks, and the element is made in the form of a round metal pipe. At the same time the pliant element is arranged in parallel to the plane of the support beam, and parameters of the pliant element are determined in accordance with the formula. The pliant element is fixed between two support boards. At the same time the boards are installed in parallel to the pipe axis. The pliant element may consist of two pipes, which are installed mutually perpendicularly and fixed, and the space between the pliant element and the mine roof is filled with material at hand. |
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Method to create rock support of mine Method consists in plugging with quick-hardening resins, for instance, polyurethane, of a contour layer of the rock via blast holes with depth of 0.4-0.5 m. Injection of resin into the blast hole is stopped after its extrusion to the surface of the rock at the distance of 0.7-0.8 of the distance between adjacent blast holes within the rock support stage. Drilling of additional blast holes of design depth for plugging of the rock massif with mobile hardening mixes. |
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Method for combined backfilling of support space Method for combined backfilling includes filling of space between supports with enclosing rocks of a mine, loose and hardening materials. After tunnelling and supporting of mines, the cavities are backfilled with loose materials. As the cavities are filled, perforated tubes are installed into the support space at the distance of 1-2 metres from each other, so that their free end protrudes into the mine space. Foaming pliant foam is supplied via the installed tubes into the support space for connection of the loose backfilling elements and filling of cavities between them. |
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Complex to drive short roadways with tubbing Complex to drive short roadways with tubbing in semi-stable rocks comprises a working element in the form of a detachable faceplate with cutters along its entire surface made with windows for preliminary weakening of a bottomhole equipped with sliding stops that retain it with hydraulic cylinders and fixed on a rotary lever installed on a bearing frame of a tubbing erector, besides, one of the ends of the rotary lever there is a grip for tubbing, made as capable of replacement with a rock-breaking tool, and also a mechanism for movement of the tubbing erector. The faceplate is equipped with a feed mechanism made in the form of two hydraulic cylinders connected with a carriage of a hydraulic drive of rotation of the rotary lever, four sliding stops that retain it and are installed in hydraulic cylinders, and four windows-segments in the middle part, closed by sliding covers. At the same time fixation of the faceplate with the rotary lever is made in the form of a quick-detachable joint of dovetail type, in which ledges on the rotary lever that are rigidly connected with it are entered into slots arranged on the inner side of the faceplate. The rotary lever is made as telescopic, and on the frame of the tubbing erector there are telescopic booms with fixed sliding canopies on them with the possibility of their reciprocal movement. At the bottomhole side the faceplate may be additionally equipped with radial slots, which are arranged along its circumference, in which plate cutters are rigidly fixed. The complex may be additionally equipped with four buckets, a guiding chute connected with a receiving tray and a belt conveyor, installed on the frame of the tubbing erector, at the same time buckets are installed diametrically along the circumference of the faceplate, and their rear wall is made in the form of a deflecting sheet, with a hole in its upper part, matched with the guiding chute. The faceplate may be fixed on the rotary lever with eccentricity relative to its axis of rotation. |
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Heading set of equipment includes heading machine with actuator device fixed at it by timberer with hold-down beam and spacing cylinders. Turning shaft at hold-down beam is equipped with turning mechanism at the machine conveyor. Manipulators are equipped with drilling and anchoring tools with permanent anchorage. Hold-down beam is equipped with sliding telescopes; manipulators with permanent fixtures are fixed at sliding telescopes of the hold-down beam. Turning shaft is made as load lifting telescopic boom with lifting and spacing cylinders. Hold-down beam at carry does not protrude beyond machine dimensions. |
Another patent 2528904.