How minichannels and head section panel of the complex hardware to implement the method
The invention relates to mining and can be used for shield tunnels in bulk and clay soils, including flooded. The method includes the destruction of the soil in the entire area of the face, submitting it to boot the box, screw conveyor and transport of bottom-hole zone to the place of loading for delivery to the surface. The destruction of the soil in the Central zone of the face produced by a screw conveyor, while in the remaining annular portion of the face make-ahead slicing slits due to the presence of the knives with the front inclined surfaces and a continuous reproduction behind the knives in the process of filing a section at the bottom of the free space. Subsequent separation and destruction on the remaining areas of the face and off the ground in the Central area of the face produce the inner surface of the cone cutter side panel of the complex equipment. To implement the method head section of switchboard equipment complex contains a screw conveyor and the housing forming the enclosing shell with a closed bottom with a support and knife parts. The knife part is made in the form of a cone, made with the angle at the vertex of not more than 80and the base of which forms a PC generatrix of the cone knives with the front inclined surfaces and a cutting edge, placed in front of the cone, with the formation behind the knives of free space. The cutting edge of the knives may be located ahead of the cutting edge of the base of the cone. Screw conveyor can be located on the axis of the section. The front end of the auger can be nominated for a plane of the annular edge by an amount greater than the diameter of the screw. The invention is aimed at improving the reliability of shield tunneling in complicated mining conditions. 2 S. and 3 C.p. f-crystals, 5 Il.
The invention relates primarily to underground construction, namely, to shield laying minichannels in loose, loamy, and similar soils, including flooded.
Known methods and design boards for holding (including mechanized) tunnels in such soils. These methods and structures include either the public face and the consequent destruction of its excavator or swept with a rotating cutter head on the handle body or simultaneous rotary working body with a closed bottom (see Glorikian C. H., Hodos Century A. the Tunnel boring machines and complexes. M.: Nedra, 1977, 326 S.; application No. 3-7794 (Japan) from 17.05.86, MKI 5 E 21 D 9/06, 9/12, publication 04.02.91 No. 4-195, and others).
Pnye difficulties as building character, so-and service-related mechanisms, due to extremely limited space inside the enclosing shell of the shield.
Closest to the proposed to the technical essence and the achieved result is a way of tunnels, which simultaneously produce: the destruction of the soil in the entire area of the face, submitting it to boot the box conveyor-loader and transport of bottom-hole zone to the place of loading for delivery to the surface, as well as the design of the shield with a closed bottom, a rotary working body and a screw conveyor.with. The USSR SU # 1448062 A1, class E 21 D 9/06, publ. 30.12.1988 year).
Implemented in these boards simultaneous destruction of all slaughter special working body, providing active (rotary) destruction, certainly expands the scope of a shield, but it requires a high power supply capacity (drives the rotor and the conveyor), significantly complicates the design and operation of the device. However, there is a fairly broad and common area loose, loamy, and similar soils, including flooded, for which (if any alternative method) is the complexity of the design is redundant.
The aim of the invention assessesthe drive mechanisms, remaining in the shield; increase the free space in the shield and facilitating the maintenance mechanisms of the shield; providing a closed bottom and, consequently, the possibility of the tunnel in terms of enhanced water slaughter; satisfaction guaranteed between the volume of dredged material and the amount of movement of the head section and, consequently, a substantial simplification of the control system and control the operation of the complex.
The problem is solved by the fact that when conducting tunnels proposed application of the method of conducting minichannels, in which the destruction of the soil in the Central zone of the face produced by a screw conveyor, while in the remaining annular portion of the face make-ahead slicing slits due to the presence of the knives with the front inclined surfaces and a continuous reproduction behind the knives in the process of filing a section at the bottom of the free space, and subsequent separation and destruction on the remaining areas of the face and off the ground in the Central area of the face produce the inner surface of the cone cutter side panel of the complex equipment.
The design of the head section of switchboard equipment package contains: screw conveyor and the housing, obrazuyuschihsya, the base of which forms the perimeter of the hull cutting edge. Cone cutter parts are made with the angle at the vertex of not more than 80and the inner surface of the cone provided with spaced at an acute angle to the generatrix of the cone knives with the front inclined surfaces and a cutting edge, placed in front of the cone with the formation behind the knives of free space.
Options design head section, in which the cutting edge of the knife is located ahead of the cutting edge of the cone's base screw conveyor is located on the axis section, and a front end of the auger is advanced beyond the plane of the annular edge by an amount greater than the diameter of the screw.
In Fig.1 shows a longitudinal section of the head section minisite with located an inclined conveyor.
In Fig.2 shows a longitudinal section of the head section minisite with a centrally located conveyor.
In Fig.3 and 4 show the performance with the forward of the front end of the auger conveyor.
In Fig.4 shows the performance with cutting edge knives, located ahead of the annular cutting edge of the knife part of the head section.
In Fig.5 shows a view along arrow a (see Fig.2, 3 and 4) on the front part of the shield.
Leading the t of the casing 1, forming the enclosing shell with blade 2 and the support 3 parts, screw conveyor 4 with screw 5 and the actuator 6. The knife part is made in the form of a cone 7 with the angle at the vertex of not more than 80. The base of the cone forms around the perimeter of the housing annular cutting edge 8 of the blade portion, the inner surface of the cone is equipped with knives 9 with the front inclined surfaces, which are located before the generatrix of a cone, with the education of the inclined surfaces of the knives free space 10. Number of blades 9 can be 3, 4 (see Fig.5) and more.
Knife 2 and the support 3 parts, for quite long tunnels can be connected to the hydraulic cylinders 11 to control the knife part and adjust the direction of movement of the head section when jacking.
The head section can be performed also with its own hydraulic cylinders feed blade part at the bottom (Fig.1 is not shown).
Screw conveyor 4 (see Fig.2) may be placed on the axis of the head section. This significantly improves the manufacturability of the design in the manufacture and increases the reliability.
The knives 9 (see Fig.4) to increase continuously played during the sinking of free space could the pressure to achieve effort when driving on dry and relatively dense soils (see Fig.3 and 4) presents the performance is extended to the surface 8 of the annular edge of the front end of the auger 5.
Equipment complex includes, for example, the transport unit 13 and the winch 14 (the position in Fig.1) of the transport system when the cable hauling. You can use the complex tunnelling equipment and systems pneumatic or hydraulic, and other performances of the lead section (for example, decompression chamber).
The head section is as follows.
In the process of moving the entire head section 1 (or the front part thereof, when performing a head section with its own hydraulic cylinders supply) in the face of the latter is at the same time the destruction of the soil in the entire area of the face and feeding ground in the loading area of the conveyor.
While the destruction of the soil in the zone of the boot is made by a screw 5 of conveyor 4, and the destruction of the soil in the remaining annular portion of the face and feed it to the startup window of the conveyor is accomplished by rapid cutting gaps knives 9 with the front inclined surfaces established an acute angle to the generatrix of the cone (with continuous reproduction behind the knives in the process of filing a section at the bottom for free to prayero, with additional destruction by means of the screw 5, the internal surface of the cone 7.
This advance in space) cutting slits wide enough and creation for established knives with the front inclined surfaces (behind the knives) space 10 is necessary to prevent volumetric compression of the soil occurring at nadhani cone on the left in the bottom soil, and thereby substantially reduce the amount of pressure efforts.
The work of the proposed head of the section is similar to the operation of the bulldozer with the cross blade. Moreover, due to the fact that nadivana cone 7 on the bottom (in contrast to the work of the blade is accompanied by a volumetric compression of the soil, equipment design forward of the blades 9 with the front inclined surfaces, behind which is constantly reproduced free space 10, provides no volume compression of the ground during movement of the head section at the bottom.
Accordingly, extension of the knives 9 in conjunction with their own cutting edge 12 forward increases the free space formed behind them, and increases the reliability of the device.
The extension of the front end of the auger 5 forward for plasmodiophora on dry and relatively dense soils (plane shift ground is located under an angle of 45to the direction of force when it is compressed).
The calculation of the pressure force needed to fracture the soil, made for the most challenging conditions and taking into account features of the proposed design shows that the feed force will not exceed 50 tons, which represents about 10% of the value of the pressure of efforts, develop jacking installation when jacking pipes, and significantly less effort developed by the hydraulic cylinders supply shield on the bottom, usually set in the head section of minisite during shield tunnelling.
Screw conveyor 4 in addition destroys the soil in the area loading and removing of flowing soil also contributes to the ongoing reproduction of free space 10, which enters the ground, separated from the array of knives 9 and tapered blade knife 7 part 2 parent partition panel of the complex.
Through the discharge opening of the conveyor 4, the soil is reloaded into the transport carriage 13, which, for example, by means of the winch cable 14 haulage, is delivered to the mouth of the tunnel and then to the surface.
Thus the design of the head section provides an implementation of the main features of the proposed method of carrying out minichannels and its implementation allows suwestvennom, remaining in the shield, to increase the free space in the panel, to facilitate the maintenance mechanisms of the shield, to ensure secrecy of the face, clay counterweight to the slaughter, and as a whole significantly reduce the cost of construction of the tunnel in loose, loamy, and similar soils, including flooded.
1. How minichannels using panel set of equipment, including the destruction of the soil in the entire area of the face, submitting it to boot the box, screw conveyor and transport of bottom-hole zone to the place of loading for delivery to the surface, characterized in that the destruction of the soil in the Central zone of the face produced by a screw conveyor, while in the remaining annular portion of the face make-ahead slicing slits due to the presence of the knives with the front inclined surfaces and a continuous reproduction behind the knives in the process of filing a section at the bottom of the free space, and subsequent separation and destruction on the remaining areas of the face and off the ground in the Central area of the face produce the inner surface of the cone cutter side panel of the complex equipment.
2. Head section panel complex Oberoi knife parts, the latter of which is made in the form of a cone, the base of which forms the perimeter of the hull cutting edge, characterized in that the cone cutter parts are made with the angle at the vertex of not more than 80and the inner surface of the cone provided with spaced at an acute angle to the generatrix of the cone knives with the front inclined surfaces and a cutting edge, placed in front of the cone, with the formation behind the knives of free space.
3. The head section under item 2, characterized in that the cutting edge of the knife is located ahead of the cutting edge of the base of the cone.
4. The head section under item 2 or 3, characterized in that the screw conveyor is located on the axis of the section.
5. The head section under item 2, or 3, or 4, characterized in that the front end of the auger is advanced beyond the plane of the annular edge by an amount greater than the diameter of the screw.
FIELD: mining industry.
SUBSTANCE: device has frontal, two side and two conical working tools with rock-destroying tools on outer surfaces, drives, rigidly connected to axes of each working tool, and displacement mechanism, connected to guides, placed at angle relatively to each other, which angle is determined from mathematical expression. Frontal and each of side working tools are made in form of two rotation bodies, having arced forming lines with given value of convexity. Axes of frontal working tool and axes of two conical working tools are rigidly connected to guides, axes of upper rotation body of frontal working tool being displaced relatively to axis of its lower rotation body towards pit-face, and axes of each pair of side working tools are jointly connected to each other and to guides. Frontal working tool may be made in form of several modules.
EFFECT: higher efficiency.
2 cl, 4 dwg
FIELD: underground structure building, particularly for forming underground tunnels and collectors.
SUBSTANCE: method involves excavating ground with cutting tool; regulating kentledge pressure in rotor chamber and backfilling annular tubing space. Kentledge pressure is automatically adjusting with that of enclosing ground exerting pressure on shield case by means of membranes. The membranes are installed in shield case and are permanently subjected to actual enclosing ground pressure. Backfilling operation is performed through end part of shield case immediately after shield case movement.
EFFECT: prevention of ground and object deformation in tunnel boring machine movement area, increased backfill layer elasticity and tunnel lining impermeability.
4 cl, 6 dwg
FIELD: tunnel construction, particularly devices to construct hydroelectric power plant floodgates and to build motor roads and rail roads in mountains.
SUBSTANCE: method involves creating conditions favorable for chemical reaction between chemical element oxides basically constituting rock and graphite for rock fusion. For this rock is heated up to high temperature at face by thermal electric arc energy transmission through metal front tunneling machine wall. Electric arc is generated between electrodes inside discharge chambers arranged on inner surface of front tunneling machine wall. Electric current is supplied to electrodes via graphite mass moving through electrically-insulated pipes. Graphite is forced via electrodes and introduced into face through nozzles connected to front tunneling machine wall.
EFFECT: possibility to regulate electric current power and graphite mass to select necessary excavation regimes.
SUBSTANCE: method of boring hard rock by means of tunnel boring machine equipped with disks of hardened steel projecting from cutting head consists in supply of foamed water liquid to cutting head; this composition corresponds to surface active substance -SAS and lubricating material - polyethylene oxide with molecular wt from 4.500.000 to 8.000.000. The said ingredients are measured separately in a water form, are added into water and are transformed into a foam using anionic or nonionic SAS; the said composition is obtained by dilution of concentrate with water on site.
EFFECT: reduced wear of cutting components; increased boring efficiency.
SUBSTANCE: invention is related to mining, in particular to mechanised performance of underground mine tunnels with round shape of cross section. Method for performance of underground mine tunnel of round cross section includes formation of oriented cavity in the Earth bowels, cutting of helical and longitudinal radial channels in edge zone of tunnel in surrounding rock mass, loading and transportation of broken muck, maintenance of stripped area by erection of support and organization of ventilation. Together with cavity formation they cut three longitudinal radial channels, evenly distributing them in plane of tunnel cross section. At the same time one of longitudinal radial channels is oriented along line of most probable largest action of external load from forces of rock pressure. Damaged rock is removed from longitudinal radial channels and loaded in transport vehicle. In longitudinal radial channels they install embedded elements, to which support elements are connected. Besides depth of longitudinal radial channel makes at least half of radius of cross section of produced tunnel.
EFFECT: higher reliability of mine tunnel maintenance in operational period.
SUBSTANCE: invention is related to mining industry, in particular to shield driving of tunnels, and may be used in shield driving of through collector tunnels with concrete lining. Method for shield driving of tunnel consists in erection of shield chambers by method of "slurry-type wall" for assembly and turns of shield on track of arranged tunnel. Walls of shield chambers, at least those, where holes are provided for passage of shield, are made of concrete, having compression strength of not more than 11.5-14.5 MPa, are reinforced with glass-plastic reinforcement from rods with diametre from 4 to 10 mm with ultimate strength in case of cutting across fibres of at least 165 MPa and developed by working element of shield. Formation of concrete lining, in process of collector tunnel driving, at least in joint of shield chambers walls and on length of tunnel from two to ten of its diametres, is carried out by at least two concentric layers, between which additional internal hydraulic insulation layer is arranged, and application of hydraulic insulation coating onto inner surface of concrete lining is carried out after complete drying of surface layer of tunnel walls.
EFFECT: improved reliability of tunnel arrangement and its hydraulic insulation, higher speed of underground communications construction.
SUBSTANCE: birotating tunnel shield unit consists of three sections. Two front sections, starting from bottomhole, are mounted on diaphragm by means of ball runnings with toothed collars of conical gear, engaged at diametral opposite sides with master conical gears of section rotation drives arranged on diaphragm, which is mounted at front end of beam with drive by means of Hooke joint and hydraulic cylinders with stems, fixed on beam and diaphragm by means of journals. Beam with drive is mounted in guides of back section, at the same time auger with a separate drive is mounted inside beam. On external surface of back section there are elements of conrotation arranged in the form of plates aligned along longitudinal axis of section, at the same time on external surfaces of front rotary sections there are helical blades arranged with opposite direction of winding. Besides, small actuating elements with individual drives and sleeves with augers are mounted upstream each blade and element of conrotation. Hollow beam is mounted in the centre of diaphragm, inside which there is an auger with drive fixed, at the same time outside - at bottomhole of beam there is a socket and loading rotor with drive mounted, connected to the main actuating element.
EFFECT: unloading of back section from torque and from longitudinal braking force.
SUBSTANCE: tunnelling header unit comprises serially arranged head and tail sections. The head section comprises a helical blade on the external surface, an actuator and an auger mechanism for broken mass discharge, besides, a rotation mechanism is also located in the head section. The tail section comprises longitudinal support elements, aligned along the longitudinal axis of the unit, a drive of the rotation mechanism. The sections are connected to each other with the possibility of the head section rotation relatively to its longitudinal axis. The rotation mechanism is arranged in the form of a hollow shaft, where two wave generators are installed, being arranged with eccentricity relative to the axis of the driving shaft, a geared crown arranged on the inner surface of the head section, a separator connected to the end section and intermediate solids of revolution. Number of teeth in the geared crown is more than the number of intermediate solids of revolution by one. The sections have a rigid kinematic link in the axial direction, which consists of two touching circular ledges, one ledge is located on the separator, the second ledge is arranged on the inner surface of the head section. The driving shaft is installed in rolling bearings, with one bearing installed in the head section, and the other one - in the end section. The driving shaft at the side of the stripped area has a driving gear arranged with the possibility of rotation from motors via a motor gear, and the motors are fixed at the inner surface of the end section.
EFFECT: improved reliability of the unit operation, loading capacity of the unit drive and efficiency of tunnelling, expanded area of the unit application.
SUBSTANCE: tunnelling combine (90) for horizontal mines comprises a rotary cutting head (93), where there are many cutting assemblies (10) installed as capable of rotation. Multiple units of instruments (50) are connected with a rotary cutting head, at the same time each unit of instruments comprises a distal end in contact with the appropriate cutting assembly. Units of instruments comprise multiple sensors, including an accelerometer (32), a magnetometer (33) and a temperature sensor (34) to monitor the appropriate cutting assembly. Sensors are installed at the remote end of units of instruments pressed for contact with a cutting assembly. Units of instruments comprise a wireless transceiver and are connected to each other into a circuit of data transfer or a peer-to-peer network. A source (176) of power supply, such as a battery pack, is provided for each unit of instruments. Sensor data may be used to control operation of a tunnelling combine for horizontal mines and/or for monitoring condition of cutting assemblies.
EFFECT: enhancing effectiveness and reliability of tunnelling operation.
27 cl, 7 dwg
SUBSTANCE: duplex geovehicle consists of three sections. Two front sections are mounted on load-carrying beams with drives by means of ball races with toothed rims of bevel gear. Section rotation drives are located on diaphragms that are mounted on front ends of load-carrying beams with drives. Each load-carrying beam with a drive is mounted in the guides of rear section with possibility of its retraction. A screw with a separate drive is mounted inside the load-carrying beam. On external surfaces of front rotating sections there located are screw blades with opposite winding direction. Before each blade there mounted are small actuating elements with individual drives and sleeves with screws. In the centre of diaphragms there mounted are hollow beams inside which screws with drives are mounted Flared ends and loading rotors with drives are mounted on the front side of face ends of hollow beams. Drives and actuating elements of rear section are located on its front wall. Outside the front wall: at the top and at the bottom - horizontally, and in the centre - vertically. Drag conveyor, tray and screw with a drive are located behind the front wall inside rear section.
EFFECT: increasing the strength of out-contour layer of rock mass.