35results about "Shaft raising" patented technology

The invention discloses a vertical shaft and inclined shaft non-blasting excavation construction method and a working platform. A guide shaft space is constructed through mutual cooperation of a forward drilling machine and a raise boring machine; measuring and setting out the section, determining the construction footage, and generating drilling coordinates according to the geometrical relationship between the pilot well space and the tunnel face; according to a preset rule, splitting hole sites of a staggered hole net are arranged on the outer edge and the interior of the section; according to the drilling coordinates and the splitting hole positions, splitting the rock mass through a splitting rod according to preset parameters; collecting and obtaining hole periphery convergence data in real time, and correcting the construction footage according to the data feedback; collecting the slag charge of the tunnel face to a guide well mouth through mechanical slagging-off operation, and sliding the slag through the guide well; and carrying out primary support and updating support parameters in real time, and entering the next cycle footage after updating is completed. The requirements for low disturbance, early supporting, high safety and high efficiency can be met, adaptation to complex working conditions is achieved through unmanned and remote centralized control, and therefore the construction requirements under the complex working conditions are met.

The invention discloses a drill rod tension type vertical shaft tunneling process which comprises the following steps: constructing a pilot shaft into a stratum by utilizing a raise boring machine, constructing a starting shaft, sequentially hoisting a tunneling machine and a hanging scaffold system into the starting shaft by utilizing hoisting equipment, and driving a tension drill rod to sequentially penetrate through the hanging scaffold system and the tunneling machine by utilizing the raise boring machine, and the tunneling machine continues to be lowered into the lower horizontal roadway and is fixed through the drill rod tensioning device, the tunneling machine starts to conduct tunneling circulating operation downwards along the tension drill rod through the stepping mechanism, and the hanging scaffold system conducts well wall supporting circulating operation downwards along the tension drill rod through the stepping mechanism till the tunneling machine conducts tunneling to the lower horizontal roadway. The tension drill rod serves as a main fixing structure and can bear the weight of the heading machine, the rock breaking positive pressure and the weight of the hanging scaffold, and the heading effect is supported not to be affected and limited by the stratum; the tension drill rod provides guidance, and the tunneling machine is guided on a correct tunneling path in real time, so that the construction efficiency and the tunneling well completion quality are improved.

The invention provides a self-weight lower deslagging construction technology of a road tunnel vertical shaft heading machine, and relates to the technical field of tunnel vertical shaft construction. Stable conversion of the deslagging process is achieved through the dynamic regulation and control technology, a progressive pressure reduction strategy is adopted to adjust tunneling parameters in four stages to enter the position above a raise-boring working chamber (thrust is decreased from 14000kN to 8000kN, torque is decreased from 3000kNm to 2000kNm), step changing is conducted by reasonably utilizing the positions of a supporting shoe, a stabilizing shoe and a cutterhead relative to an auxiliary transverse channel, and the tunneling efficiency is improved. Therefore, the conversion preparation of the tunneling process is completed.

The utility model relates to the technical field of underground tunneling equipment, in particular to a protective device of a vertical shaft drilling machine and the vertical shaft drilling machine. The protection device comprises a fixing plate and a plurality of shielding mechanisms, and the shielding mechanisms are located in the circumferential direction of the edge of the drill rod and movably arranged on the fixing plate. A sealing assembly is arranged on the end face, close to the drill rod, of the shielding mechanism. Under the action of external force, the shielding mechanism is provided with a first position moving close to the drill rod and a second position moving away from the drill rod. And at the first position, each sealing assembly is attached to the drill rod, so that the sealing assemblies of the multiple shielding mechanisms are connected to form a sealing ring, and the shielding mechanisms are connected with the fixing plate in a sealed mode. When slurry carries rock slag to flow downwards, due to sealing of the shielding mechanism, the slurry cannot enter the gap between the power equipment and the drill rod, but is directly guided to the outside, and the situation that foreign matter affects normal operation of the equipment or causes mechanical faults is avoided.

This invention belongs to the field of tunneling machine technology and proposes a tunneling machine and construction method for pre-mixed high-pressure abrasive water jet vertical shaft excavation. The rotary sealing mechanism includes a dynamic-static conversion component installed on the main unit, and a buffer component is installed between the dynamic-static conversion component and the main unit. Through the coupled design of mechanical seal and buffer shock absorption in the rotary sealing mechanism, it can adapt to rotational vibration conditions and realize long-distance sealed transportation of high-pressure fluid. At the same time, multiple outer contour cutting nozzles are inclined outward on the outer contour of the cutterhead, multiple hole-expanding nozzles are vertically installed on the feed end face of the cutterhead, and multiple slag discharge nozzles are inclined on the inner wall of the outer contour of the cutterhead, which solves the problems of backflow clogging of the jet cutter and cutter burial. Through long-distance sealed transportation, hole expansion and slag discharge functions, the coupled application of jet technology and vertical shaft excavation tunneling machine reverse drilling rig is realized, improving drilling efficiency and reducing cutter wear.

The invention relates to the technical field of mine draw shaft construction, discloses a construction method of a pre-reinforced anti-seepage type mine draw shaft and the draw shaft, and solves the problems that an existing draw shaft is prone to collapse and water seepage, high in construction safety risk and high in cost. Performing high-pressure grouting (3-4MPa) by using PO4.25 cement every 5m, verifying, circulating until the guide hole is communicated, reversely digging and reaming to form a shaft with the diameter of 1.5-1.8 m, and installing a vibrating funnel; the draw shaft comprises a reinforcing impermeable layer of 4-8.5 m; the main structure of the draw shaft comprises a reinforced impermeable layer, a shaft body and a vibrating funnel, the reinforced impermeable layer is of an annular structure distributed along the design center line of the draw shaft; the method is safe in mechanical construction, high in efficiency, stable in seepage prevention and low in cost, and can be expanded to main and auxiliary shafts and ventilation shafts.

The invention discloses a collaborative construction method for vertical shaft subsection SBE tunneling and adit upward bending section excavation, and belongs to the technical field of pumped storage power station construction. The method comprises the following steps: step 1, determining an SBE tunneling sub-section; secondly, hovering points are arranged in the vertical shaft; thirdly, a positioning hole and a pilot shaft are constructed in the center of the vertical shaft in sequence to be communicated with an existing roadway or tunnel on the lower side of the vertical shaft; 4, the vertical shaft is excavated to an SBE tunneling section from top to bottom through the SBE in an expanding mode, and then the SBE is lifted to a hovering point; 5, slag slipping is conducted through the pilot shaft, and integrated layered blasting excavation is conducted on the upper adit reserved rock plug, the adit upper bent section and the vertical shaft within the height range of the adit upper bent section; sixthly, a simplified starting well is constructed; and 7, the SBE is lowered to complete expanding excavation operation of the remaining part of the vertical shaft. The defects existing in the prior art are fundamentally overcome, collaborative excavation construction of the adit upper bent section and the vertical shaft is achieved, and the SBE expanding excavation raise boring well guide method is deepened and developed.

The invention provides an ultra-deep mechanical method vertical shaft construction method based on multi-shaft cooperative construction, which comprises the following steps: S1, respectively constructing a first vertical shaft pilot well section and a second vertical shaft pilot hole section at the positions of a first vertical shaft and a second vertical shaft, and constructing an inclined shaft channel between the bottoms of the first vertical shaft pilot well section and the second vertical shaft pilot hole section; performing reverse reaming, tunneling and supporting on the pilot hole section of the second vertical shaft; s2, a second shaft pilot well section is constructed below the second shaft raise construction section, a first shaft pilot hole section is constructed below the first shaft pilot well section, and an inclined shaft channel is constructed between the bottom of the second shaft pilot well section and the bottom of the first shaft pilot hole section; performing reverse reaming, tunneling and supporting on the pilot hole section of the first vertical shaft; and S3, the step S1 and the step S2 are repeated until the first vertical shaft and the second vertical shaft are tunneled to the target depth. The advantages of a normal well method and an inverse well method are fused, the efficiency bottleneck of anti-gravity deslagging of vertical shaft tunneling is overcome, tunneling-supporting-shunting deslagging is achieved in parallel, the vertical shaft completion efficiency is improved, and the construction cost is reduced.

The invention relates to the technical field of raise boring, in particular to a raise boring machine reaming torque self-adaptive transmission mechanism which comprises a bearing seat, a plurality of radial holes extending in the radial direction of the bearing seat are formed in the bearing seat, a steel ball is arranged in each radial hole, and a steel ball mounting sliding block, a first spring and an adjusting sliding block are slidably mounted in each radial hole. An extension rod vertically extending downwards to the outside of the bearing seat is arranged at the bottom of the adjusting sliding block, an adjusting unit is arranged outside the bearing seat, an elastic positioning rod is elastically mounted in the mounting hole, and when the steel ball completely enters the radial hole, the axis of the positioning hole and the axis of the mounting hole are located on the same straight line. According to the technical scheme, the extension rods on all the adjusting sliding blocks are synchronously driven through the adjusting unit, it can be guaranteed that the distances between the adjusting sliding blocks and the axis of the bearing base are consistent, the elastic positioning rods can be inserted into the positioning holes to fix the positions of the steel ball installation sliding blocks, and unnecessary collision between the steel balls and the grooves when the drill rod grooves rotate is avoided.

The invention relates to a large-diameter self-cleaning pressure stabilizing type drilling machine cutter which comprises a raise boring machine cutter, a hydraulic lifting mechanism and a radius adjusting supporting mechanism, the raise boring machine cutter comprises a center box body, a connecting rod, a left cutter clack and a right cutter clack, and the left cutter clack and the right cutter clack are fixed to the side face of the center box body; the top surfaces of the upper panels of the left blade and the right blade are inclined; the hydraulic lifting mechanism comprises a mounting plate, a lifting hydraulic cylinder and a lifting rod, the raise boring machine tool is fixedly mounted on the mounting plate, the lifting hydraulic cylinder is mounted on the bottom surface of the mounting plate and drives the lifting rod to lift up and down, and the bottom end of the lifting rod is fixedly connected with a fixing block; the radius adjusting supporting mechanism comprises supporting hydraulic cylinders and telescopic supporting feet, the multiple supporting hydraulic cylinders are arranged in the circumferential direction of the side face of the fixing block, one end of each supporting hydraulic cylinder is fixed to the fixing block, a piston rod of each supporting hydraulic cylinder faces the outer side in the radial direction, and the end of the piston rod of each supporting hydraulic cylinder is connected with the corresponding telescopic supporting foot.

A construction method of a variable-axis shaft in rock mass relates to underground engineering construction technology, in particular, a method for excavation and support of underground shaft structure. The method constructs a variable-axis shaft including a straight section and a variable-axis section. When the variable-axis section is expanded to the starting position and the ending position, rock benches and outer inclined sections are respectively arranged on the shaft wall at the positions, rock bench locking anchor rods are arranged outside the rock benches, and outer inclined section locking anchor rods are arranged above the outer inclined sections. When excavating, smooth blasting is used for the straight section, smooth blasting is used for the rock bench side, and pre-splitting blasting is used for the outer inclined section. The method has the beneficial effects that the diameter of the straight section of the constructed shaft and the diameter of the variable-axis section do not change, the speed of the slag is reduced by changing the falling trajectory in the variable-axis shaft, energy is lost, and the purpose of energy dissipation is achieved. Moreover, the locking support is arranged on the rock bench and the outer inclined section, the forming quality of the key part of the rock mass is timely protected, and the efficiency of the shaft excavation is improved.

Each motor (8) includes a cylinder block (13) separate from the cylinder blocks of the other motors, in a method in which the head (2) is driven at a set point speed by only a first subset (M1, M4, M7) of the motors in the set, and subsequently the head is driven at the set point speed by only a second subset (M2, M5, M8) of the motors in the set, the second subset being different from the first subset.

The invention belongs to the technical field of drilling construction, and particularly relates to a large-diameter cluster type pneumatic reverse circulation down-the-hole hammer reamer bit and a drilling method, and the bit comprises a central pipe, a front guide bit, a down-the-hole hammer, an air chamber, an anti-jamming drill groove and a control system; the central pipe is used for transmitting torque and rotating speed and serves as a deslagging channel; the air chamber upper cover plate, the air chamber lower cover plate, the bundling body peripheral cylinder, the front joint positioning plate, the bottom lip plate and the central pipe jointly form a bundling body; the bottom of the central pipe is connected with the front guide drill bit, and a slag inlet is formed in the side wall of the front guide drill bit and used for receiving rock slag discharged by the anti-jamming drill groove and guiding the rock slag into a slag discharging channel of the central pipe; the plurality of down-the-hole hammers are uniformly distributed on the outer side of the central pipe in the circumferential direction; the air chamber is formed by connecting an air chamber peripheral cylinder, an air chamber upper cover plate and an air chamber lower cover plate; the problems of low crushing efficiency and drill jamming of large-diameter reaming drilling are solved, the deslagging effect is improved, and the drilling efficiency is improved.

The invention discloses a shaft combined construction method, and relates to the technical field of shaft construction. Comprising the following steps that firstly, construction preparation is conducted, a raise boring machine is selected, and well mouth positioning and raise boring machine leveling are conducted; step 2, guide hole construction: adopting graded drilling to form a guide hole penetrating through the upper and lower horizontal planes of the vertical shaft; 3, expanding excavation construction is carried out, slope expanding, drilling and blasting operation is carried out, and vertical shaft full-section zoning and layering expanding excavation is carried out from top to bottom with the guide hole as the center; fourthly, primary supporting is carried out, and supporting is synchronously carried out on the expanding excavation face when one layer is expanded and excavated in the zoning and layering expanding excavation process; and 5, secondary supporting is conducted, specifically, after expanding excavation and primary supporting construction are conducted to the bottom of the vertical shaft, secondary supporting is conducted on the wall face of the vertical shaft from bottom to top through the slip form. The mode that the raise boring machine guide hole and manual expanding excavation are combined is adopted, the problems of ventilation, drainage and deslagging existing in the manual expanding excavation process are solved in advance through the guide hole, the technology of secondary lining from bottom to top of the slip form is combined, and the time of the supporting procedure is greatly shortened.

The present application relates to the technical field of reverse drilling, in particular to a reverse drilling rig reaming torque self-adaptive transmission mechanism, comprising a bearing seat, a plurality of radial holes extending radially in the bearing seat are arranged in the bearing seat, a steel ball is arranged in each radial hole, a steel ball mounting sliding block, a first spring and an adjusting sliding block are slidingly installed in the radial hole, an extension rod extending vertically downward to the outside of the bearing seat is arranged at the bottom of the adjusting sliding block, an adjusting unit is arranged outside the bearing seat, an elastic positioning rod is elastically installed in the mounting hole, when the steel ball completely enters the radial hole, the axis of the positioning hole and the axis of the mounting hole are on the same straight line, the extension rod on all the adjusting sliding blocks can be synchronously driven by the adjusting unit, the distance between each adjusting sliding block and the axis of the bearing seat can be ensured to be consistent, the elastic positioning rod can be inserted into the positioning hole to fix the position of the steel ball mounting sliding block, and unnecessary collision between the steel ball and the groove can be avoided when the steel ball rotates in the groove.

A multi-layer liftable conical positive and reverse drilling equipment and construction method, the equipment: the top layer bearing table is composed of a bearing disc A and three bearing plates A, a reverse drilling joint threaded hole is formed at the axial center of the bearing disc A; the upper end surface of each bearing plate A is assembled with a drill bit through a support base; the middle layer bearing table is connected below the top layer bearing table through a top layer lifting hydraulic cylinder, and is composed of a bearing disc B and three bearing plates B, the upper end surface of each bearing plate B is assembled with a drill bit through a support base; the bottom layer bearing table is connected below the middle layer bearing table through a middle layer lifting hydraulic cylinder, and a positive drilling joint threaded hole is formed at the axial center of the lower part; six bottom layer support bases are uniformly assembled on the bottom layer bearing table in a ring shape, and a drill bit is assembled in each bottom layer support base. The method: according to the drilling object, a positive or reverse drilling mode is adopted, and the distance between two adjacent bearing tables is controlled according to the actual working condition. The equipment and method can meet the drilling requirements of various rock layers with different hardness.

The invention relates to the technical field of vertical shaft construction, and discloses an earth pressure balance type upward vertical shaft heading machine and a construction method. The earth pressure balance type upward vertical shaft heading machine comprises a main machine and an earth bin, wherein the main machine comprises a shield body and a cutterhead; the pressurizing mechanism is arranged on the back face of the cutter head and located in the soil bin; and the residue discharging pipe is arranged at the bottom end of the soil bin and used for receiving the residue soil extruded from the soil bin by the pressurizing mechanism. The pressurizing mechanism increases the pressure of the soil bin, sudden pressure drop is avoided, a pressure barrier is formed, and instantaneous impact of sudden water gushing is counteracted; residue soil is continuously conveyed to the residue discharging pipe from the soil bin, stable residue discharging flow is formed, and spewing caused by sudden pressure drop or poor flow plasticity is avoided. The muck is conveyed in the muck bin in a pressurized mode and is similar to a pumping mechanism, and compared with pipeline muck blocking caused by a pipe clamp valve in a non-pressure state, the mobility of discharged muck is enhanced; the pressurizing mechanism is arranged in the soil bin, the conveying capacity of the equipment for large-particle-size muck is not affected, and the reliability of muck discharging is ensured.

The application relates to the technical field of shaft construction, and discloses a soil pressure balance type upward shaft tunneling machine and a construction method. The soil pressure balance type upward shaft tunneling machine comprises a main machine and a soil bin, and the main machine comprises a shield body and a cutter head; a pressurizing mechanism is arranged on the back of the cutter head and located in the soil bin; and a residue discharging pipe is arranged at the bottom end of the soil bin and connected to the pressurizing mechanism to extrude the residue soil from the soil bin. The pressurizing mechanism increases the pressure of the soil bin, avoids pressure drop, forms a pressure barrier, and offsets the instantaneous impact of gushing water; the residue soil is continuously transported from the soil bin to the residue discharging pipe, a stable residue discharging flow is formed, and spouting caused by pressure drop or poor flow plasticity is avoided. The residue soil is pressurized and transported in the soil bin, which is similar to a pumping mechanism, the residue discharging liquidity is enhanced compared to pipe blockage caused by the non-pressure state of a pipe clamp valve; and the pressurizing mechanism is arranged in the soil bin and does not affect the residue soil transporting capacity of the equipment, so that the residue discharging reliability is ensured.

The invention belongs to the technical field of raise boring construction, and particularly provides a raise boring tool which comprises a plurality of center shafts sequentially connected from top to bottom and a plurality of reaming units arranged on the center shafts in a one-to-one correspondence mode, and the reaming diameters of the reaming units distributed from top to bottom are gradually increased. The small-diameter reaming unit located on the upper portion makes contact with a rock stratum firstly, and then the large-diameter reaming unit located on the lower portion makes contact with the rock stratum. The multiple reaming units are arranged on the multiple center shafts correspondingly, the reaming unit on each center shaft is only responsible for cutting a circle of rock corresponding to the reaming unit, the total cutting force is dispersed to the multiple center shafts, and the risk that the center shafts are fractured due to the fact that torque or impact load is too large during large-diameter reaming is reduced.

The application relates to the technical field of liaison passage construction, and particularly discloses an excavation device suitable for up-and-down stacked ground-level metro interval passages, which comprises a steel sleeve pipe arranged between two horizontal passages, a digging device detachably arranged on the upper end of the steel sleeve pipe, a rotary driving device detachably arranged on the lower end of the steel sleeve pipe, reinforcing rings stacked on the digging device and detachably connected together between adjacent reinforcing rings, and the rotary driving device drives the steel sleeve pipe and the digging device to rotate, so that a longitudinal passage is dug between the two horizontal passages. The application has the beneficial effect that the digging device is rotated to dig the vertical passage, the self gravity of the reinforcing rings is used to provide the downward pressure for the digging device in the digging process, the digging device and the steel sleeve pipe are simultaneously moved downwards, and the reinforcing rings are used to reinforce and support the dug longitudinal passage.

The invention discloses a vertical shaft tunneling drill rod tension mechanism which is characterized in that a tension drill rod is fixed in a pilot shaft, and a tension ring is formed on the tension drill rod; and the vertical shaft tunneling equipment is detachably connected with the tension ring and moves along the tension drill rod. When the tunneling equipment is lowered, aligning and leveling operations are not needed any more, and the problems of inclination, collision with the well wall, rollover and the like are completely solved; in the axial direction, two-way supporting force is provided for underground equipment, higher axial pressure can be borne during operation, and tunneling equipment can be stabilized through the two-way supporting force provided by the tension drill rod when axial load or sudden pressure fluctuation is coped with.

This invention discloses a raise boring machine capable of supporting 8-meter diameter drill pipes, relating to the field of drilling equipment technology. The invention includes a support platform, with a drilling rig mounted on top and a drill pipe shaft mounted at the bottom of the drilling rig. A reaming assembly is located at the bottom of the drill pipe shaft, including a fixed shell at the bottom of the drill pipe shaft. This invention utilizes a protective assembly with multiple sets of replaceable protective plates evenly covering the surface of the drill pipe shaft. During drilling, these plates replace the drill pipe shaft in direct friction with the borehole wall, effectively preventing wear and micro-cracks in the drill pipe shaft body. Simultaneously, after drilling, operators can visually determine the location of damage to the drill pipe shaft by observing the wear of the protective plates. The use of positioning screws, fixing caps, and limiting components enables rapid disassembly and reliable locking of the protective plates, preventing them from loosening under vibration. The reaming assembly, in conjunction with the drilling rig and the first hydraulic cylinder, completes large-diameter raise boring operations, improving construction stability.

The invention relates to a drilling, bolting and grouting integrated device which comprises a working platform which is of a multi-layer structure and is used for installing all parts and providing a working space for personnel; the torsion-resistant beam is connected with the working platform and is used for balancing the gravity of the working platform and limiting the axial torsion of the working platform; the arm frame type tunneling rock drilling device is assembled on the working platform in a sliding mode, can ascend and descend along the working platform and comprises a first drilling system, and the first drilling system is used for tunneling drilling operation; and the boom type anchor rod drilling machine is assembled on the working platform, is used for anchor rod support drilling operation, and is configured to be not interfered with the boom type tunneling rock drilling device. According to the drilling, bolting and grouting integrated device and mechanical equipment, it can be guaranteed that operation is carried out in order, the twisting and falling risks of a platform are solved, all parts are free of operation interference, meanwhile, drilling is free of dead corners, automatic drilling of a super-long anchor rod is achieved, and finally tunneling and supporting integrated mechanical operation is achieved.

The invention relates to a drilling device for creating a vertical borehole along a drilling line from a starting point to a target point provided below the starting point in an accessible underground cavity, the drilling device comprising: a drive for rotating the drill head when the drill head is in use, the drive being provided at the starting point, and the drive being connectable to a drill string; a vertical drill head for creating a vertical borehole from the starting point to the target point along a created borehole or along the drilling line, the vertical drill head being connectable to the dill string; the drill string which is detachably assembled from a plurality of drill pipe elements, connects the drill head, during a drilling operation, to the drive for rotating the drill head and, during drilling with the drill head, can be lengthened by the insertion of drill pipe elements in the drill string at the starting point according to drilling progress or can be shortened by the removal of drill pipe elements from the drill string at the starting point; a pressing force-introduction device for generating a pressing force for pressing the vertical drill head against the working face to be removed, the pressing force-introduction device having at least one actuator for introducing a defined pressing force into the vertical drill head during drilling.

The invention relates to a tower-type guide deslagging large-diameter raise boring machine cutter which comprises a central box body, a left cutter clack, a right cutter clack and a scrap cleaning mechanism, the central box body is of a tower-type layered structure which is gradually increased from top to bottom, a connecting rod is arranged in the middle of the central box body, and the connecting rod is perpendicular to an upper panel of the central box body; a plurality of hobbing cutter holders are arranged at the top of an upper panel of each layer of the central box body, a left cutter petal and a right cutter petal are arranged on the periphery of each central box body, the left cutter petals and the right cutter petals are fixedly connected with a side panel on the lowermost layer of the central box body respectively, and the left cutter petals and the right cutter petals are arranged in a central symmetry mode with the connecting rod as the axis; chipping cleaning mechanisms are respectively arranged on the upper panel of the central box body and the upper panels of the left and right cutter flaps, each chipping cleaning mechanism comprises a driving motor and a blade, the blade is connected with an output shaft of the driving motor through a coupler, and a rotating shaft of the blade is parallel to the connecting rod. Rock debris accumulation is effectively inhibited, and automatic debris removal in the construction process is achieved.

The present application relates to the vertical shaft construction technical field, disclose a soil pressure balance formula anti-well drilling machine and construction method. Soil pressure balance formula anti-well drilling machine includes: drill pipe;Anti-pull driving device;Tunneling host, including shield body, cutterhead and earth pressure balance device, cutterhead is driven connection through drill pipe and anti-pull driving device;Earth pressure balance device is suitable for controlling the speed of slag discharge, establishes the balanced earth pressure with the working face;Lining device, can carry out synchronous lining in the tunneling process of tunneling host. In the process of upward tunneling and slag discharge of tunneling host, earth pressure balance device can control the speed of slag discharge, establish the balanced earth pressure with the working face;In the tunneling process, synchronous lining can be carried out through lining device, even in soft soil layer, vertical shaft excavation is not prone to collapse;And anti-pull driving device is arranged on the ground, and the volume of tunneling host is small, and the space in the tunnel is not occupied too much, and vertical shaft excavation can be completed in narrow space.

The utility model relates to the technical field of raise boring machines, and provides a simple conveying device for a drill bit of a raise boring machine in a narrow space. The transportation device comprises a trolley and a plurality of groups of support frames; the trolley comprises a bottom plate, wheels and a hand push rod; the multiple sets of supporting frames are distributed on the bottom plate at intervals. Each group of supporting frames comprises at least two supporting seats which are oppositely arranged at intervals in the axial direction of the rolling shaft; each supporting seat comprises a tool apron, a pressing block and an opposite-pulling piece; the pressing block is arranged on the tool apron, and the opposite-pulling piece is connected with the tool apron and the pressing block in an opposite-pulling mode; v-shaped notches are formed in the opposite ends of the tool apron and the pressing block correspondingly and used for clamping the rolling shaft. The rolling shafts at the two ends of the hobbing cutter are supported through the cutter holders, then the pressing blocks matched with the cutter holders are clamped above the rolling shafts, the cutter holders and the pressing blocks are tensioned through the opposite-pulling pieces, radial displacement and axial displacement of the rolling shafts and the hobbing cutter are limited, stability of drill bits in the transportation process is guaranteed, and the device is very suitable for transportation of the drill bits in the narrow space of a tunnel.

The present application provides a kind of to meet 10 meters diameter anti-well drill rod, the anti-well drill rod includes: anti-well drill rod body;Rod body reinforcing assembly, the rod body reinforcing assembly is set to the outside of anti-well drill rod body, anti-bite agent adding mechanism, the anti-bite agent adding mechanism is set to the outside of the upper threaded connector top;Extrusion linkage unit, the extrusion linkage unit is installed in the top of anti-well drill rod body, the extrusion linkage unit is driven anti-bite agent adding mechanism work under the adjacent anti-well drill rod body thread connection push;Anti-reverse locking mechanism, the anti-reverse locking mechanism includes locking upper assembly and locking lower assembly.In adjacent anti-well drill rod body connection, it can be achieved when thread is tightened axial pressure drive extrusion linkage unit, anti-bite agent is pressed into annular communication cavity from supplementary shell, then it is evenly infiltrated into thread gap again through the supplementary hole of evenly arranged periphery, form continuous lubrication protective layer, facilitate drill rod disassembly, improve construction efficiency.

The present application relates to coal seam mining technical field, disclose a steep coal seam group drill-crack-move-transportation-filling collaborative mining process, first in the underground coal seam arrangement transportation roadway and complete ventilation, power supply configuration, at the same time, establish operation platform on the ground;Through the reverse drilling machine construction guide hole, reverse reaming form open cut, as the free surface of directional fracturing;Along the coal seam strike in turn interval arrangement borehole, and from bottom to top sectional implementation directional fracturing, form coal;Then through the underground hydraulic support and scraper conveyor collaborative work to the coal continuous transportation;With the mining advance, interval distance set coal pillar, and to the goaf filling, to maintain the stability of roof and floor strata.The present application through each process in the spatial position, operation sequence and function on the mutual cooperation, form the ground well linkage collaborative mining process system, significantly improve the safety, continuity and resource recovery rate of steep coal seam group mining, have good engineering application value.

A multi-scale umbrella-shaped conical surface adjustable positive and reverse mining equipment and construction method, the equipment: the upper end of the fixed disc is equipped with four drill bits; the telescopic support rod is assembled at the lower end of the fixed disc through the base, and the tail end is externally sleeved with an expandable support disc base; the inner ends of the three expandable support discs are connected with the expandable support disc base, and the outer ends are provided with support fixed engagement racks; the outer conical surface of the movable main umbrella body has three rock breaking areas in sequence, and is sequentially provided with drill bits; the inner conical surface is sequentially provided with three support steps, and is sequentially provided with large, medium and small scale drilling fixed engagement racks; the ends of the three movable main umbrella body conical surface connecting rods respectively extend into the three arc-shaped grooves on the fixed disc, and the conical surface connecting rod and the arc-shaped groove are hinged through a rotating connecting piece. The method: according to the drilling object, the forward or reverse drilling mode is adopted, and the support angle is controlled according to the actual working condition. The equipment and method can meet the needs of various drilling conditions.