492results about "Props/chocks" patented technology

The invention discloses a coal mine deep high-stress roof stabilizing device based on a truss collaborative structure. The coal mine deep high-stress roof stabilizing device comprises a supporting module, a lifting supporting mechanism, a buffering mechanism and a flow guide filtering mechanism. The supporting modules are detachably and fixedly connected through a splicing structure, the lifting supporting mechanism is installed at the tops of the supporting modules and used for driving the supporting components to abut against a coal mine roof, the buffering mechanism is connected with the supporting components, and the flow guide filtering mechanism is arranged on the side portions of the supporting modules and used for receiving and treating roof seepage water. The invention discloses a roof stabilizing device suitable for a deep high-stress environment of a coal mine, the roof stabilizing device is composed of a supporting module, a lifting supporting mechanism, a buffering mechanism and a flow guide filtering mechanism, and through the design of convenient splicing locking, flexible buffering supporting and efficient flow guide filtering, the stability, operation efficiency and safety of roof supporting are improved.

The utility model discloses a coal mine tunnel supporting structure which comprises two supporting loop bars. The lifting rod is connected to the interior of the supporting sleeve rod in a sliding manner; the top plate is arranged at the upper end of the lifting rod; the positioner is arranged on the outer side of the upper end of the supporting sleeve rod; the protective net and the two fixers are arranged on the two sides of the outer end of the top plate respectively. According to the coal mine tunnel supporting structure, the top of the coal mine tunnel is supported through the top plate, the width of the top plate can be adjusted so that the top plate can be matched with the width in the coal mine tunnel, the top plate is supported through the supporting sleeve rod and the lifting rod, and the supporting sleeve rod can slidably ascend and descend in the lifting rod; after the supporting sleeve rod is lifted to a proper position, the position of the supporting sleeve rod can be fixed through the positioner; the protective nets are arranged on the two sides of the outer end of the top plate correspondingly, falling rocks on the top of the coal mine roadway are blocked through the protective nets, and the situation that people in the roadway are injured by the falling rocks is avoided.

The invention provides a mine supporting method, device and equipment. The method comprises the steps that first supporting data of a to-be-supported mine is obtained; determining a target support strategy of the to-be-supported mine based on the first support data and a preset support database; when the to-be-supported mine executes the target supporting strategy, supporting monitoring parameters of the to-be-supported mine are collected at target time; under the condition that the value of the support monitoring parameter is larger than a preset safety threshold value, the target support strategy is adjusted, and the adjusted target support strategy is obtained; the adjusted target supporting strategy is used for updating the target supporting strategy. The tamper-proof support database is constructed through the block chain technology, the support strategy is dynamically optimized in combination with real-time monitoring data, the problems that a traditional support mode is low in data credibility and lagged in decision are solved, and the method has the advantages that the support data credibility is improved, and the support strategy is dynamically optimized.

The present application belongs to the field of coal mine roadway construction, and particularly relates to a method for self-forming a roadway by top cutting at a negative angle. The method comprises the following steps: drilling a field in front of a working face and close to a right side of a mining roadway; drilling anchor holes and top cutting holes along a strike and staggered construction, and installing grouting anchor cables in the field; cutting the basic roof and the immediate roof at a negative angle through the top cutting holes at the back of the working face, constructing a roadway-side gangue retaining structure, grouting through the grouting anchor cables and anchoring the grouting anchor cables on the roadway-side gangue retaining structure; and monitoring the deformation of the steel mesh at the grouting anchor cable and adjusting through a nut. The present application can ensure that the construction position of the roadway-side gangue retaining structure does not affect the width of the self-supporting roadway and the integrity of the roof by constructing a field of a certain width in advance. The negative angle top cutting holes can cut a section that is deviated to the direction of the goaf, so that the gangue formed by the collapse of the immediate roof moves to the direction of the goaf and does not move to the mining roadway in large quantities, thereby ensuring the safety of the construction in the mining roadway.

The invention relates to a single spiral stand column and a using method thereof.The single spiral stand column comprises a lower stand column pipe and an upper stand column pipe connected into the lower stand column pipe in a sleeved mode, a mounting shell is fixedly connected to the lower stand column pipe, a lead screw is connected into the mounting shell through a shaft and is in threaded connection with the upper stand column pipe, and a driving mechanism for driving the lead screw to rotate is installed in the mounting shell; the movable column body is fixedly connected with the upper end of the upper stand column pipe through a hoop assembly, the mode that lead screw driving and the adjustable movable column body are combined is adopted, supporting operation can be independently completed without depending on an external hydraulic pump station, the application range of the movable column body is expanded, the overall structure is compact, the weight is light, and the movable column body is convenient to use. The mounting and adjusting process is simple and fast, the supporting efficiency is remarkably improved, and the operation time is shortened; repeated pressure test and maintenance work needed by a hydraulic system is avoided, meanwhile, the problem of environmental pollution caused by oil leakage is avoided, and the requirements for energy conservation and environmental protection are met.

The invention relates to the technical field of roadway supporting, and provides a soft rock dynamic pressure roadway supporting method adopting a combined supporting device, which comprises the following steps: S1, prefabricating a connecting piece 5 and a supporting unit; s2, performing double-gradient grouting on the surrounding rock of the roadway; s3, a roadway surrounding rock anchoring system is constructed; s4, mounting a bearing plate on the surrounding rock of the roadway; s5, the connecting pieces and the multiple supporting units are spliced according to the section shape of the roadway to form a rectangular roadway combined supporting device or a three-star-arch roadway combined supporting device; s6, a displacement sensor, a pressure sensor group and a controller are installed; step S7, floor heave construction; and S8, dynamic support regulation and control. According to the combined supporting device, active supporting, real-time monitoring, dynamic compensation and bottom plate reinforcing are integrated, and the problem of multi-dimensional deformation of the extremely soft rock dynamic pressure roadway is solved through structural innovation and construction process optimization.

The automatic maintenance equipment for the mining hydraulic support stand column comprises a driving module and a dismounting module, the dismounting module is connected to the top of the hydraulic support stand column in a sleeving mode and corresponds to an inner guide sleeve, and the driving module is located below the dismounting module and connected to the lower middle portion of the hydraulic support stand column in a sleeving mode; the dismounting module comprises a fluted disc, an outer guide sleeve, an inner clamping block, an adjusting rod, a ratchet wheel, a driving motor and a gear; the driving module comprises a hoop, a supporting plate, a vertical rod, a hydraulic oil cylinder and a pawl; when the driving motor drives the gear and the fluted disc to rotate, the arc-shaped guide groove in the fluted disc guides to enable the adjusting rod to drive the clamping blocks to move in the radial direction so as to clamp the inner guide sleeve. The hoop is fastened on a hydraulic support stand column, the hydraulic oil cylinder on the supporting plate drives the pawl to be matched with the ratchet wheel through the stand rod and drives the ratchet wheel to rotate so that the outer guide sleeve can rotate, and therefore the inner guide sleeve clamped in the outer guide sleeve can be disassembled. The inner guide sleeves on the hydraulic support stand columns of different sizes can be automatically disassembled, adaptability is high, and operation efficiency is high.

The invention relates to a fully-mechanized caving support multiple-butt-joint process and a mining face arrangement method, and belongs to the technical field of coal mine fully-mechanized caving mining face arrangement and support installation. According to the technical scheme, mining face arrangement is optimized according to the revealed coal seam occurrence condition in the tunneling process, and the coal mining amount is delineated to the maximum degree; multiple cutting holes are arranged, and the equipment installation route is optimized; and the positions and states of the recovery bracket and the equipment are accurately controlled, and safe and rapid butt joint of the multi-open-off cut bracket and the equipment is realized. The method has the beneficial effects that the delineated coal mining amount is maximized, the number of equipment transportation links is small, and repeated butt joint is safe, rapid and accurate.

The utility model discloses a kind of coal mining roadway supporting structure, including protective net, the protective net one end and the other end are placed with plate body one, two groups the plate body one between being equipped with plate body two, the plate body two one end and the other end are respectively with corresponding plate body one adhere, plate body two is placed with multiple groups of frame body, multiple groups The frame body one end is all set with groove body.The utility model, by sliding frame body on plate body two, the position of multiple groups of frame body can be adjusted, after adjusting is completed, make rubber block and plate body two resist tight by screw bolt one, frame body is fixed, frame body moves and drives plate body four to move, by adjusting the position of plate body four can different area of protective net is applied support force, so that protective net can adhere to the roadway surrounding rock of non-standard section to a certain extent, to a certain extent, avoid the gap problem caused by shape fixed of traditional integrated supporting plate, ensure that supporting force is evenly distributed, to a certain extent, inhibit surrounding rock deformation.

The utility model discloses a kind of mining single prop column shoes, it is related to column shoe technical field, the utility model includes column shoe main part, inner support cylinder is connected in column shoe main part inside, inner support cylinder is sleeved with inner hoop ring outside, column shoe main part is sleeved with outer support cylinder outside, and outer support cylinder is sleeved with outer hoop ring outside, pull rod is connected between outer support cylinder and inner support cylinder. The utility model is provided with inner support cylinder, pull rod and outer support cylinder, inner support cylinder provides support from column shoe main part inside, outer support cylinder is constrained from outside, pull rod connects both and bears tension and strengthens column shoe main part, forms the anti-deformation structure of pull rod and outer support cylinder inside and outside cooperation, significantly improve the structural stability and carrying capacity of column shoe, reduce the security risk caused by radial creep;At the same time, when column shoe main part occurs axial creep, outer support cylinder is good in structural stability and can be used as reference object for metal material;Radial creep of column shoe main part can be effectively inhibited, and axial creep condition is convenient for determining.

The invention discloses a roadway forepoling hydraulic support energy absorption receding device, and belongs to the technical field of coal mine fully-mechanized coal mining, and the roadway forepoling hydraulic support energy absorption receding device comprises a pressure-bearing beam and an energy absorption receding component; the pressure-bearing beam is of a box structure, and the top of the pressure-bearing beam is provided with an antiskid structure. The energy absorption receding component is fixedly connected to the lower portion of the pressure bearing beam and is of a corrugated steel plate structure. The method has the advantages that the supporting strength of a roadway and the stability of a supporting system are improved, and the safety of underground operating personnel is guaranteed.

This utility model relates to the field of spillway tunnel support technology, specifically a reinforcement support device for spillway tunnel excavation. It includes a fixed frame, with lifting blocks bolted to both ends of the fixed frame. A support block is slidably connected to the lower end of each lifting block, and a support base is fixed to the lower end of each support block. Multiple brackets are fixed to the top surface of the lifting blocks. Connecting seats are fixed to the outer ends of the brackets and both ends of the top surface of the fixed frame. Arc-shaped blocks are bolted to the connecting seats. A first pressure-relief block is fixed between two adjacent arc-shaped blocks. A second pressure-relief component is installed at the end of each bracket near the arc-shaped block. A connecting component, including an insert block, is installed on the arc-shaped block. The first pressure-relief block between adjacent arc-shaped blocks and the second pressure-relief component at the end of the bracket undergo controllable limited deformation, absorbing the energy released by the surrounding rock while maintaining stable support for the surrounding rock. This reduces the rigid stress on the structure, decreases brittle failures such as retaining wall cracking, support bending, and joint collapse, and lowers the risk of collapse.

The disclosure provides an upward horizontal layer filling mining method with support column roof protection, and relates to the technical field of mining engineering, and the method comprises the following steps: a plurality of layers are divided in a mine chamber; the layers are evenly divided into a plurality of stope fields perpendicular to the ore body trend along the ore body trend; the ore bodies of the plurality of stope fields are sequentially mined; a plurality of support columns for supporting the roof of the ore body are vertically arranged in the stope field which has been mined out; after all the stope fields in the layer are mined, one-time filling is performed; the above steps are repeated until all the ore bodies in the mine chamber are mined. The upward horizontal layer filling mining method with support column roof protection can improve the ore recovery rate, the safety of the mine chamber and the mining efficiency, realizes the effective balance of safety, economy and high efficiency, and has a wide application prospect.

The object of the present invention is a method for manufacturing a multi-chamber structural element for forming a multi-chamber structural element, the chamber profile (1) extending radially from a center defined by the joining of chamber profiles (1), comprising the following steps: providing at least three chamber profile preforms (2), each chamber profile preform (2) made from a sheet of metal material and comprising two walls (3) arranged relative to each other in substantially parallel planes with a gap therebetween, the edges of the individual walls (3) coming together, and a valve element (6) being arranged on at least one wall (3); The edge of each unconnected wall (3) is sealed with a seal (5) to form a closed, sealed, empty interior space of the chamber profile preform (2), a fluid under pressure is introduced into the interior space of the chamber profile preform (2) through a valve element (6) to form a deformed chamber profile (1), and at least three chamber profile preforms (2) or chamber profiles (1) are connected along at least a part of their inner edges to corresponding inner edge areas of the chamber profile preforms (2) or chamber profiles (1) proximal to the connecting axis (4).

The utility model relates to the field of coal mine equipment, in particular to a support top beam and joist connecting device which comprises a top beam, a joist and a ring beam sleeve, the joist is located below the top beam, the joist and the top beam are in a perpendicular crossing state on the horizontal plane, a plurality of connecting blocks are fixedly installed at the bottom end of the top beam, and the ring beam sleeve is sleeved with the joist. A plurality of inserting grooves are formed in the two side walls of the joist, the ring beam sleeve is in a U shape and annularly sleeves the outer wall of the joist, the top end of the ring beam sleeve is connected with the connecting block through bolts and nuts, connecting holes corresponding to the inserting grooves are formed in the ring beam sleeve, and connecting rods are slidably installed in the connecting holes. And the connecting rod is inserted and embedded in the slot. The device has the effect of facilitating movement of the top beam.

A system and method for mine top support of a structure includes a top support device including a cylindrical cover defining a hollow interior and a plurality of bamboo segments disposed within the hollow interior and extending coaxially with an axis of the cylinder. In addition, the top support device with the cylindrical coating comprises a hollow interior, a plurality of bamboo sections are arranged in the hollow interior and are coaxial with the axis of the cylinder, gaps are formed between adjacent bamboo sections, and filling materials such as polyurethane foam are injected into the gaps to keep the bamboo sections positioned when the top support device bears loads. The support device is configured to be loadable and yieldable in a predetermined manner to control sudden failure of the mine roof.

The invention discloses a coal mine two-lane hydraulic support anti-impact stand column and a multi-stage pressure relief method of the coal mine two-lane hydraulic support anti-impact stand column. The anti-impact stand column comprises a first-stage cylinder, a second-stage cylinder, a movable column and an inner leakage plane pressure limiting valve. The first-stage cylinder is divided into two cavities by a valve seat plate arranged in the first-stage cylinder; a valve port is formed in the middle area of the valve seat plate; the inner leakage plane pressure limiting valve comprises a pressure limiting valve piston, a valve element and a first-stage elastic element. The pressure-limiting valve piston is connected with the inner wall of the upper cavity in a movable sealing fit manner, and a plurality of damping holes are formed in the pressure-limiting valve piston; the upper end of the valve core is connected with the pressure-limiting valve piston, and the lower end extends out of the valve port of the valve seat plate and closes / opens the valve port; the two ends of the first-stage elastic element make contact with the pressure limiting valve piston and the valve seat plate respectively. The cavity wall of the cavity C is provided with an upper cavity pressure relief opening, and the cavity B is provided with a lower cavity pressure relief opening. By assembling the internal leakage plane pressure limiting valve in the first-stage cylinder, the problems that an existing hydraulic support stand column is low in pressure relief response speed, seriously insufficient in pressure relief capacity and the like are solved.

The invention relates to the technical field of coal mine tunnel supporting, and discloses a mining U-shaped shed auxiliary erecting device which comprises a fixing frame, a bearing table is installed at the top of the fixing frame, a U-shaped beam body is arranged at the top of the bearing table, a guide rail is arranged on the surface of the fixing frame, and a two-way motor is fixedly connected to the center of the inner wall of the guide rail. The output end of the bidirectional motor is fixedly connected with a screw rod, sliding blocks are arranged in the guide rails close to the two sides of the bidirectional motor in a sliding mode, the sliding blocks are in threaded connection with the screw rod, hydraulic rods are hinged to the tops of the sliding blocks, and a connecting structure used for clamping the U-shaped beam body is arranged at one ends of the hydraulic rods. The condition that the longitudinal height of an existing mine laneway is limited is effectively avoided, the lifting device is arranged to push the two sides in the extending direction of the rock laneway through a relatively-stretched transverse laneway space, the U-shaped beam is lifted through relative movement of hydraulic rods on the two sides, and the beneficial effect of improving the overall lifting stability of the U-shaped beam is achieved.

The application discloses a coal column reinforcing method for waste resource utilization, which is characterized by the following steps: ensuring the stability of the coal column, designing a groove on the coal column, pasting a groove mold on the coal column, embedding the groove mold, filling the groove mold with coal gangue concrete, and prefabricating the groove mold. The application can ensure the stability of the coal column, design a groove on the coal column, prefabricate a groove mold, paste the groove mold on the coal column, embed the groove mold, fill the groove mold with coal gangue concrete, and make the construction operation simple. The application can effectively reduce the size of the coal column, improve the coal resource mining rate, avoid the waste of coal resources, and realize the resource utilization of the waste coal gangue.

The utility model relates to the technical field of support, in particular to a working face advance support device for coal mining, which comprises a first support frame, a first extension frame and a bidirectional threaded rod, first telescopic rods are installed at the two ends of the first supporting frame, the other ends of the first telescopic rods are fixedly connected with the second supporting frame, the first extending frame is installed in the first supporting frame, and a second extending frame is installed at the symmetrical position of the first extending frame; the supporting device can be driven to move forwards through cooperation of the first extending frame and the second extending frame, the bidirectional threaded rod is installed in the first extending frame, and the bidirectional threaded rod can change the supporting width to be suitable for roadways with different widths; according to the utility model, the supporting device is more convenient to use, and the supporting frame body is suitable for supporting work of roadways with different widths.

The application discloses a far-near field cooperative roof cutting method and relates to the technical field of roof cutting. It comprises the following steps: using single hydraulic prop to cooperate with metal hinged roof beam and cross beam to pre-support the roof of the roadway, wherein the pre-roadway reinforcement is performed before the working face is mined, and the length of the pre-roadway reinforcement of the roadway to be left is appropriately lengthened, considering that the directional pre-splitting cutting hole is better in cutting seam outside the pre-pressure range. The application has the beneficial effects that: when in use, the pre-splitting roof cutting and the forced roof falling of the goaf block most of the mining pressure transmission to the roof of the roadway to be left, and the falling gangue supports the roof of the roadway to be left, thereby ensuring the stability of the roof of the roadway to be left along the goaf, and auxiliary support is performed during the roof cutting, so as to prevent the deformation of the roadway to be left from being too large and affecting the roadway to be left.

This invention discloses a support device for deep jointed rock mass roadways, comprising a roadway body with a support device body located at a corner of the roadway body. The support device body includes: multiple support roof plates arranged in a circular array at the corners of the roadway body; multiple support units located at corresponding support roof plate positions, with connecting components between the support units, the support roof plates, and adjacent support units; and multiple auxiliary units, each group having one end attached to a connecting component. The support roof plates are equipped with fixed connectors for use with the auxiliary units. Through the integrated arrangement of the support roof plates, support units, connecting components, and auxiliary units, the entire support device body forms a unified support unit, ensuring the entire structure supports the support roof plates, guaranteeing the stability of the support device, and enabling quick installation and disassembly, while also saving on the cost of high-strength support.

The invention discloses a roadway support device with an energy-absorbing buffer device, which comprises a support top beam, a support column and an energy-absorbing buffer device, and the energy-absorbing buffer device comprises a hydraulic buffer unit and a metal yield buffer unit; the hydraulic buffer unit is fixedly connected with the metal yield buffer unit; the hydraulic buffer unit comprises a cylinder body, a piston rod and a damping hole, and the metal yield buffer unit is a metal corrugated pipe which is axially compressed and deformed. Compared with the prior art, the hydraulic buffer unit has the advantages that the hydraulic buffer unit can quickly dissipate high-frequency impact energy and effectively cope with instantaneous strong impact by virtue of the cooperation of the damping hole with the variable-diameter design, the energy accumulator and the safety valve; the metal yield buffer unit adopts a metal corrugated pipe which is axially compressed and deformed, residual energy is absorbed through plastic deformation under the limit load, the metal corrugated pipe and the metal yield buffer unit are in two-stage linkage, impact energy levels with different strengths can be covered, the energy absorption efficiency is greatly improved, and the limitation of a single energy absorption mechanism is avoided.

The utility model discloses a coal mine water prevention drilling rig with a protection function, and relates to the technical field of coal mine drilling, the coal mine water prevention drilling rig comprises two first stand columns and two second stand columns, the side faces of the tops of the first stand columns are fixedly connected with protection plates, and the surfaces of the protection plates are fixedly connected with the second stand columns; lifting frames are arranged on the surfaces of the two first stand columns, sliding grooves are formed in the surfaces of the lifting frames, baffles are slidably connected to the inner walls of the sliding grooves, and electric push rods are fixedly connected to the lower surfaces of the protection plates. According to the device, before drilling, the electric push rod extends, the baffle slides downwards, the baffle slides relative to the sliding groove, then the bottom of the baffle abuts against the ground, silt splashing can be generated during drilling, the splashed silt is blocked by the baffle, workers are not prone to being splashed by the silt, the safety of the workers is improved, and the device is suitable for popularization and application. And the second hydraulic rod extends.

The utility model provides a supporting structure for coal mining. The coal mining supporting structure comprises a first manual hydraulic column and a second manual hydraulic column, and a pressure adjusting cylinder is arranged at the bottom of the side face of the first manual hydraulic column. According to the coal mine excavation supporting structure, the second buckle is arranged, when the supporting structure is installed and fixed, the first manual hydraulic column extends to support a mine hole, and therefore the first manual hydraulic column and the second manual hydraulic column can be clamped and fixed in the mine hole; at the moment, the two ends of a reinforcing rod are sleeved with a first buckle and a second buckle correspondingly, so that the reinforcing rod can fixedly connect a first manual hydraulic column and a second manual hydraulic column, the reinforcing and fixing effect of the mine hole bearing column is improved, and the reinforcing and fixing effect of the protective fence is improved; the problem that the protection effect of the protection structure is poor due to the fact that the mine hole bearing column is poor in fixing effect is solved.

The utility model provides a mine pillar reinforcing device, which relates to the technical field of mine pillar reinforcement and comprises a pillar body, a detachable fixed seat is sleeved on the pillar body close to the bottom edge, and a plurality of detachable movable seats which are sleeved on the pillar body are stacked on the fixed seat. The upper surface of the fixed seat is rotatably connected with screw rods in a penetrating mode, the number of the screw rods corresponds to that of the movable seats, the bottom of the supporting column body is reinforced by arranging the fixed seat, the movable seats on the fixed seat ascend to different heights of the surface of the supporting column body under the rotation action of the screw rods, and the sliding blocks are used for obliquely pulling and supporting the movable seats. The height of the supporting column body where the movable seats are located can be reinforced by reinforcing the movable seats, and therefore all-directional covering and reinforcing of the surface of the supporting column body can be achieved by adjusting the heights of the multiple movable seats.

The underground mining artificial pillar comprises a lower pre-fixing frame and an upper pre-fixing frame, a supporting mechanism is fixedly assembled between the lower pre-fixing frame and the upper pre-fixing frame, outer baffles are evenly and fixedly assembled on the outer side wall of the lower pre-fixing frame and the outer side wall of the upper pre-fixing frame, and pouring openings are formed in the side walls of the outer baffles. The mode that the lower pre-fixing frame, the upper pre-fixing frame and the supporting mechanism are matched with one another is adopted, a stable supporting structure can be formed, then concrete is poured into the supporting structure, and a fixed ore pillar for supporting in a mining area is formed. And the outer baffle and the reinforcing frame are matched, so that the pillar formed through pouring has better bearing capacity and stability.

The invention discloses a surrounding rock grade evaluation method and platform based on multi-parameter feature fusion, and belongs to the technical field of soft rock tunneling, and the method comprises the steps: carrying out the information collection of surrounding rock characteristics, and obtaining a surface mechanical feature parameter, an internal structure feature parameter, a dynamic response feature parameter and a support feedback feature parameter; mapping the collected parameters to a four-dimensional feature space to obtain a four-dimensional feature vector X; constructing a scratch mechanical characteristic curve, a sound wave integrity characteristic curve, a drill bit dynamic response curve and a support force feedback curve; performing feature quantification on each curve by adopting machine learning, and constructing a surrounding rock grade evaluation model; on the basis of a surrounding rock grade evaluation model, grade evaluation is conducted on surrounding rock geology, the cutting depth is automatically optimized according to the grading result, drill bit types are switched, dynamic compensation of supporting pressure is achieved, millisecond-grade dynamic grading from plasticity to a brittle failure mode is achieved, construction risks under complex geological conditions are greatly reduced, and operation efficiency is improved.

The application provides a constant-resistance anchor rock beam stability control method for a thick coal seam strike super-long working face, which realizes constant-resistance reinforcement of a lower crossheading roof by excavating upper and lower crossheadings in the thick coal seam, reinforcing the lower crossheading roof by using constant-resistance anchors and W steel along the strike, and filling the mined-out side of the roadway with the cut-off gangue during the coal mining process to form a complete roadway; the roof support is realized by restraining the concrete retractable support, and the deformation requirement of the roadway roof is met by the retractability of the support, thus solving the support problem that the constant-resistance anchors cannot be hung in the stable rock stratum due to the limited length, enabling the top-cutting pressure-relief gob-side entry retaining technology to be successfully applied in the thick coal seam non-pillar mining, and being low in cost and not affecting the working face advancing and mining, and having incomparable advantages over the roadway-side filling gob-side entry retaining non-pillar mining, and being a more scientific and reasonable thick coal seam non-pillar mining method.

The application discloses an assembled coal mine roadway supporting equipment, and relates to the technical field of underground coal mine supporting, which comprises two bases, a hydraulic cylinder, a supporting seat, an adjusting mechanism and a docking mechanism. The adjusting mechanism and the docking mechanism are arranged, the two bases are in contact with the two sides of the roadway, then the hydraulic cylinder is operated to drive the supporting seat to move upward, the connecting seat is synchronously moved upward, the supporting seat and the connecting seat support the top of the roadway, and the connecting seat and the connecting rod are automatically fixed; meanwhile, the two adjacent bases on the same side can be fixed, the roadway is conveniently supported, the equipment is designed in a standardized and modular manner, can be quickly assembled and disassembled, has the characteristics of compact structure, efficient installation and reusability, is suitable for coal mine roadways with different geological conditions and cross-sectional shapes, and can significantly improve the roadway supporting construction efficiency and safety and reduce the supporting cost.