Method of performing ascending workings for transporting mineral product
SUBSTANCE: invention refers to mineral resource industry and can be applied when developing ore and non-metal minefields for transporting mineral product under influence of proper weight. Method involves boring of a pilot well till design length is achieved by means of a forward travel reaming bit. After that, it is removed and on the free splined shaft there assembled is a reverse travel reaming bit which consists of telescopic cross-pieces and a centering guide. Then, the pilot well is enlarged with reverse travel till the required shape of "flattened cone" is obtained.
EFFECT: excluding rat-holing of the ascending workings, decreasing energy consumption when crushing mined rock, and creating safe working conditions.
The invention relates to the mining industry and can be used in the development of metallic and non-metallic deposits for transportation of minerals under their own weight.
There is a method of testing a steep seam stripes on the fall with the notch of coal under a shield overlap (Apelike, the technology of mining. - M.: Nedra, 1985, s-221), where the broken coal by gravity down the furnaces on the haulage drift.
The disadvantages of this method of transportation of rock mass are: frequent suboceana rising workings, resulting in lower productivity; create hazardous conditions when razuchivanii of Glasunov.
With the transition of mining operations in the lower horizons and deteriorating geological conditions implemented the drilling method of the rising excavations (Aiero, Gun, Pvegeared, Genario, mechanization of preparatory workings. - M.: Nedra, 1988, 164-169). This method is characterized by significant cost of the expansion of the borehole to the desired diameter.
The closest technical solution adopted for the prototype, is a method of drilling for coal and rock using a disk extender (A.S. USSR № 723115, MKI IS 9/00. Guide lantern drill rod / Naalin, Appcelerator and others - is Avelino 02.01.74. Published 25.03.80, bull. No. 11).
Along with the existing advantages to reduce energy consumption this method has the disadvantage that there is no possibility of changing the diameter of the hole during operation of the extender.
The objective of the invention is to eliminate the above disadvantages of the prototype, and thus the creation of such a way of conducting itself workings, which would eliminate saucepan rising generation; reduce energy intensity in the destruction of the rock mass; to create safe working conditions.
The invention consists in that in the method of holding itself workings for the transportation of minerals, including advanced well and the bit-reverse, mounted on a splined shaft with a guiding lantern, first Buryat advanced well to the design length with extender forward progress, then it is removed and freed splined shaft gather extender reverse, consisting of a telescopic crossbars and guide light, then advanced well extend backward to the desired form of a truncated cone.
Thus, with the expansion of advanced borehole rock cutting tool gradually extends to the borehole wall, with built-in jacks providing what I drilling of production of a particular form.
The form of development "truncated cone" excludes saucepan and reduces the intensity at fracture rock mass.
The comparison of the proposed solutions to the prototype and similar technological solutions are known and the existing level of engineering and technology has allowed to establish its compliance with the patentability criteria of "Novelty and inventive step.
The invention is illustrated by drawings. Figure 1 presents a diagram illustrating the sequence of drilling and drilling wells for the transportation of minerals. Figure 2 - extender reverse with a sliding canopy and rock cutting tool.
The way of conducting itself excavations for transportation of minerals is carried out as follows.
At the beginning of the production haulage 1 and vent 2 horizons from the bottom up using the drilling machine 3 slipping between a good well 4. Then in formulation 2 with splined shaft 5 is removed extender forward stroke and installed the extender reverse 6. Thanks to the retractable anchor shoes 7 lamp 8 and Porogaramu instrument 9 extender reverse 6 is advanced drilling wells 4 to produce the desired form of a truncated cone 10. Extension support Bashmakov is carried out jacks 11, mounted in bearings 12. Cross members 13 of the expander 6 is made telescopic, with the possibility of extension rock cutting tool 9 in the process of drilling with the Jack 14.
The application of the above-described method of conducting itself workings in underground development ore and non-metallic deposits ensures safe operation and reduces the cost of preparatory workings.
The way of conducting itself workings for the transportation of minerals, including advanced well and the bit-reverse, mounted on a splined shaft with a guiding lantern, characterized in that the first Buryat advanced well to the design length with extender forward progress, then it is removed and freed splined shaft gather extender reverse, consisting of a telescopic crossbars and guide light, then advanced well extend backward to the desired form of a truncated cone.
SUBSTANCE: ore chute gate comprises two bottoms attached onto cranks and arranged below the outlet hole to turn in a vertical plane in opposite directions relative to horizontal axles. The latter are fitted outside the branch pipe vertical walls and in parallel to them. Aforesaid cranks are linked up by other two cranks with their free ends linked with the rods of power cylinders arranged horizontally. The latter have are furnished with two rods to turn the cranks of aforesaid linkage in different sides. The cranks of bottoms, in initial position and with the gate opened, are oriented horizontally, while the cranks of the above linkage with the branch pipe walls form a 45 degrees angle. There is a dual-slope baffle arranged inside the branch pipe at the level of axles and in parallel to them to overlap the end face edges of bottoms, in plan, with the gate closed. Every bottom's crank has two pins fixed in cantilever therewith to enter, unobstructed, the openings of counter balance that rests upon the bottom's crank via detachable sleeves fitted on the pins.
EFFECT: higher reliability of gate operation.
5 cl, 7 dwg
SUBSTANCE: invention refers to test benches for experimental investigations in laboratories. The test bench for investigation of parameters of the chain gate for ore chute consists of the section of a vertical oriented tube secured on a frame; a circular guide of angular profile in cross section with vertical and horizontal flanges is fastened on the lower cut of the said tube; the bench also consists of a ring designed to turn in a horizontal plane relative to the guide and equipped with welded round-link chains arranged along the perimeter of the ring at uniform spacing. Lower ends of chains are secured to another ring, which can turn in a horizontal plane and can be set off in a vertical plane. Alternating between them rollers are installed on the upper ring along its perimeter; the rollers are designed to rotate around horizontal and vertical axes and also the rollers interact correspondingly with horizontal and vertical flanges of the circular guide. Further the rollers are assembled on the lower ring along the perimeter of the ring with uniform distance between them and on vertical axes; these rollers are designed to interact with interior cylinder surface of the case secured on a frame; also on the lower ring there are assembled two additional diametrically set rollers on removable horizontal axes, the said rollers interact with vertical oriented guides of double-T profile in cross section pivotally hanged to the frame with their upper ends and able to turn in the plane passing through the axes of the additional rollers sideways from the lower ring; the said guides can be fixed in turned position relative to the frame. In upper and lower rings in grooves of sections of flexible elements there are secured rims; flexible elements envelope the rims at an angle close to 360 degrees. One end of each flexible element is fastened on the rim, while another is equipped with a dynamometer and kinematically connected with a drive. The upper ring is equipped with a catch device, which fixes the upper ring relative to the circular guide. The cylinder case has a vertical slit wherein the branch of the flexible element running from the lower ring is located. A round plate is placed in the interior cavity of the tube section with a gap in a horizontal plane; alternative loads can be arranged on the plate; also this plate interacts with samples of ore located in the interior cavity of the tube section. By means of the flexible element, the length of which is equal to the height of the tube section, the plate is kinematically tied with the frame, where points of flexible element fixture to the frame are arranged along the symmetry axis of the section of the tube. A container with a slide gate in its upper part is installed under the lower ring on the frame; the samples of ore can be received and placed in the container.
EFFECT: invention facilitates laboratory assessment of strength and kinematic characteristics of chain gate for ore chute for conditions of ore lumps chute with various versions of turn ring position: upper and lower one.
2 cl, 1 dwg
FIELD: mining; transporting.
SUBSTANCE: chain gate for ore chute consists of two rings assembled under discharge opening one above another and oriented in horizontal planes. The rings are tied between them with vertically oriented round-link chains secured on the rings with their ends and arranged along the whole perimeter of rings. The upper ring is stationary fastened under the discharge opening, while the lower ring is kinematically connected with a drive and is designed to turn in horizontal plane. The lower ring is equipped with rollers arranged around the exterior perimeter of the ring at uniform distances; the rollers are designed to rotate around vertical axes and interact with interior surface of a vertically oriented case of cylinder shape; the case envelopes chains with a gap. The case is secured on a stationary foundation. The lower ring from the lower side is made in form of a rim, in the groove of which a steel wire cable is inserted; the cable with its one end is secured on the rim, while with its another end it is tied with a drum, which is kinematically connected to the drive equipped with a breaking facility. In the initial position, when the gate is open, the cable envelopes the rim along the whole length of its circumference, while a slack from the rim strand of the cable envelopes a deflecting unit from below; the deflecting unit can rotate around its axis equipped with sliders; the sliders are designed to be set off in vertical guides and are equipped with a counterweight; in its initial position the counterweight is placed on the foundation. The axis of the drum is assembled so that it exceeds the lower ring at a value bigger, than vertical displacement of the lower ring, when the discharge opening of ore chute is shut; the distance in horizontal plane of the axis of the drum from the axis of the deflecting unit is chosen from the condition of approximate equality of resultant force of tension of tight and slack strands of the cable enveloping the deflecting unit for the lower ring in the initial position and after its displacement upward at closing the discharge opening with curled chains. The case is made with a vertical slot wherein the cable slack from the rim of the lower block can be inserted with a gap; the height of the slot is accepted not less, than the travel of vertical displacement of the lower ring.
EFFECT: invention facilitates simplifying design of chain gate and increasing reliability of operation at discharging lumps via discharge opening of ore chutes of increased sizes.
SUBSTANCE: invention refers to auxiliary transport equipment, particularly to gates and is designed mainly for shutting off outlet apertures of ore chutes in mines; it can be also implemented for outlet of lump loads from hoppers. The ore chute gate contains two cylinder bottoms installed under an outlet port secured on two cranks; the said bottoms are designed to rotate in vertical plane into opposite directions against horizontal axes. The axes are located on outer sides of vertical walls of a sleeve and parallel to them. The cylinder bottoms of cranks are arranged overhung with the length of arc corresponding to right angle; free ends of bottoms are directed inside the sleeve. Kinematical connection between cranks is made in form of additional cranks secured on axes. Free ends of cranks are connected with rods of two double-piston-rod actuating cylinders oriented horizontally and assembled with gaps relative to two other walls of the sleeve. In their initial position at an open gate the cranks are oriented horizontally, while the additional cranks form the angle of 45 degrees with the walls of the sleeve; the additional cranks are designed to interact after turn into the direction of the sleeve at the angle of 90 degrees with stops secured on the sleeve. A shield with two sloping surfaces is installed inside the sleeve at the level of axes and parallel to them; the said shield overlaps the end flanges of the cylinder bottoms in plane when the gate is closed and is oriented along the axis of sleeve symmetry. Free ends of the shield are arranged in slots of the side walls of the sleeve and are designed to set off the shield in vertical and horizontal planes. The shield is spring loaded towards brackets of the sleeve by means of a compression spring. At the ends of the shield there are installed unbalance vibrators; their axes are parallel to a lengthwise axis of the shield. Dimensions of the gate are chosen considering the following ratio R=0.5B+a, r<0.355[0.5(B-b)+a-c], where R is radius of the crank, m, r is radius of additional crank, m, B is the width of the outlet port of the sleeve, m, a is the distance between the axis and inside surface of the sleeve wall, m, b is total distance between piston rods and piston rods and end walls of the actuating cylinder for final positions of the piston rods, m, c is the height of the piston rod of the actuating cylinder, m. A replaceable component out of wear and shock resistant material is installed on top of the shield with two sloping surfaces.
EFFECT: increased reliability of operation at unloading oversize lumps through outlet port of ore chute, eliminating possibility of jamming of separate lumps of unloaded bulk between cylinder bottoms and supporting them cranks and avoiding doming.
2 cl, 5 dwg
FIELD: mining, particularly devices to draw and deliver particulate materials (crushed rock) from ore passes in underground mining.
SUBSTANCE: device comprises gutter with driving gate arranged in lower part thereof and defining sector in cross-section. The gate may rotate in vertical plane. The gutter has comb member arranged in bottom part thereof and connected to gate through hinged-lever connection. Lever of the connection is installed in the comb member and may slide in slot by means of roller. Upper comb member part has dovetail partitions.
EFFECT: increased operational reliability, simplified structure, assemblage and maintenance.
FIELD: mining, particularly transport specially adapted to underground conditions.
SUBSTANCE: method involves loading industrial waste in tilting skip unloaded from skip bottom; receiving and unloading industrial waste via hoppers; lowering empty skip at predetermined depth for skip loading with industrial waste from another hopper; transporting skip filled with industrial waste along bore to receiving hopper opened by means of hinges; unloading industrial waste through bottom thereof; filling the skip with mineral; lifting the skip to day surface along the bore.
EFFECT: increased efficiency of skip hoist usage for industrial waste lowering and transportation to goaf.
FIELD: mining industry, possible use during underground extraction of mainly ore formations and kimberlite pipes.
SUBSTANCE: ore chute is provided with elastic, closed covers positioned pair-wise along the height of ore chute shaft and filled with compressed air. They are held on armored hermetic cable for feeding compressed air and on rope. Cover pairs adjacent height-wise are positioned transversely to each other. Diameter d of cover is selected from inequality d>0,5D, where D - diameter or transverse diameter of ore chute. Distance between adjacent pairs of covers vertical-wise along height h is calculated from formula h=10+1/dp, where dp - average diameter of rock mass piece, meters.
EFFECT: decreased degree of size reduction of rock mass, decreased costs of major repairs of ore chute, reduced speed of rock mass during transfer through ore chutes of practically any height.
FIELD: mining, particularly for underground ore deposit and kimberlite pipe development.
SUBSTANCE: ore pass comprises shaft, loading mouth and sieve. The ore pass shaft is provided with conveyer belts suspended to sieve grate so that distances between adjacent conveyer belts are different and defined by maximal dimensions of rock pieces passing between the belts. Sealed elastic shell is arranged in lower ore pass part. The sieve is installed at α=17° - 45° angle to horizontal plane. Lower conveyer belt ends are provided with weights.
EFFECT: reduced degree of rock grinding, increased service life of ore pass members.
FIELD: mining engineering.
SUBSTANCE: invention relates to mining engineering, particularly to facilities of mechanisation of unmanned coal extraction, for instance in conditions of hydromine. Mechanical-hydraulic gear for implementation of upward borehole contains bearer frame, executive device in the form of two counter-rotating cutting crowns and driving hydraulic actuator, water is used in the capacity of energy carrier. Gear is outfitted by drilling-anchorage device, control system, allowing at least two reversible spool-type distributor with moving element, and oil-station jetting hydraulic circuit. Drilling-anchorage device is installed by longitudinal axis of bearer frame with orientation of its boring tool along-track direction of gear and connection of its anchor mechanism to jetting hydraulic circuit of oil-station. And to the control system there are introduced two hydrocontrolled sliding shutter with retractable rods, operating in antiphase, one of which is connected to water inlet hydraulic circuit to driving hydraulic actuators and cutting crowns of operating member, and other - into water inlet hydraulic circuit to rotator of boring tool of drilling-anchorage device. Furthermore, one distributor is fixed on bearer frame of gear and interlocked simultaneously to retractable rods of both sliding shutters and hydraulically- to feeding hydraulic actuator of drilling-anchorage device, and the second is fixed on rod of its hydraulic actuator with ability of introduction of its moving elements into contact alternately with its body or with bearer frame of gear and hydraulically connected to controlling cavities of sliding shutters and wedged hydraulic actuator of anchor mechanism of drilling-anchorage device.
EFFECT: there are reduced mass of gear and labour-intensiveness of its maintenance.
SUBSTANCE: development complex for rise headings consists of spacing plate with hydraulic roller-type jacks resting on preliminary installed cribwork, with rails assembled on plate, on which boring machine moves, and also of lowered down barrier with folding screen and of brackets facilitating fixation of swinging grid for operation safety; development complex is characterised with following: protecting part of complex is equipped with telescopic barrier from side of roof, in extended part of barrier there are openings for drilling bore holes, while from side of ground of development there are two skies for displacement of development complex upward along rise; also to reduce dynamic loads during drilling and blasting works there are assembled damping supports to interact with barrier by means of jacks; additionally, spacing plate is equipped with retractable heads and shock absorbers arranged along perimeter of working.
EFFECT: improved labour conditions of miners, increased reliability of support of rise headings and facilitated safety of mining operations.
FIELD: mining industry, particularly to erect vertical mine tunnels.
SUBSTANCE: method involves cutting rock at face; loading the cut rock and conveying thereof; mounting forcing-through plant connected to pump station and provided with support member, hydraulic jacks and pressing member; installing lining components in mounting chamber; forcing tunnel shield body and lining components. The tunnel shield body is forced simultaneously with forcing lining members upwards for height equal to lining member width with the use of hydraulic jacks provided in forcing-through plant. The hydraulic jacks are brought into action by executive tunnel shield tool movement relative tunnel shield body. The executive tool is permanently pressed to the face. The pressing member of the forcing-through plant consists of composite parts. Lining components are mounted in the composite forcing-through plant by lowering and lifting each component of the pressing member in turns. Vertical tunnel construction system comprises tunnel shield with executive tool of rotor type, ground transshipping mechanism, forcing-through plant with support member, hydraulic jacks and with pressing member to apply action on lining to be constructed. The system also includes ground distribution means and pumping station with control panel. The pumping station is connected to hydraulic jacks of the forcing-through plant. The system also has support member of the tunnel shield and hydraulic jack of executive tunnel shield tool. The support member is installed between the tunnel shield and the forcing-through plant. Hydraulic jack of the executive tool may cooperate with that of forcing-through plant. Ground transshipping mechanism is made as ground channel with hopper secured to the support tunnel shield member. Pressing member of forcing-through plant is composed of several parts, which may be serially displaced relative the lining.
EFFECT: provision of vertical shield movement and tubing support forcing in upward direction.
3 cl, 3 dwg
FIELD: oil and gas industry.
SUBSTANCE: invention refers to drilling. It can be used for borehole or gas well calibration. The blade reamer consists of integral body with attaching tool-joint threads, and slave unit including four blades and sludge-discharge notches between the blades. Hard-alloy inserts are fixed in the blades. The body is integral with the blades. Along blades there are provided dovetail grooves. They contain preloaded, though reciprocating when fixed in grooves, set of profiled spring-elastic segments with trapezoidal cross-section. Lateral faces of the segments have shaped through-holes formed symmetrically by both sides from trapeze base. Upper part of the segment is provided with V-shaped conic grooves. The segment contains at least three circular cylinder hard-alloy inserts. Shaped through-hole in the segment is generated with: trapeze base and scallops of various circle radiuses. Hard-alloy inserts are mounted on trapeze base in the segment and snugly embraced with scallops in the shaped hole, soldered in the segments and blade grooves to working surface of the blade. Besides hard-alloy inserts, working surface of the blades is provided with antifriction coating flush with hard-alloy inserts.
EFFECT: higher performance, extended application, enhanced calibration and higher development rate.