505results about "Protective covers" patented technology

The present invention belongs to the technical field of anchor protection apparatuses. Provided is an automatic anchor protection platform having combined support of anchor rods and anchor cables. The automatic anchor protection platform comprises a movable chassis, a multi-cycle anchor rod drilling rig, an anchor rod drilling rig posture positioning control device, an anchor cable support device, a temporary support device, an electrical system and a hydraulic system. Said automatic anchor protection platform integrates the multi-circle anchor rod drilling rig, the anchor cable support device and the temporary support device, and therefore meets the anchoring and support requirements of roadways under different geological conditions, allows anchor rod and anchor cable parallel support operations to be conducted at the same time, and achieves efficient coordinating matching linkage integrated design, thus further promoting efficient operation processes in limited spaces such as coal mines and tunnels.

The invention discloses a variable stiffness gradient energy absorption component for roadway support and an installation method, the variable stiffness gradient energy absorption component for roadway support comprises: stand columns arranged on two sides of a roadway, the upper ends of the stand columns being provided with a jacking mechanism; the brackets are arranged between the stand columns on the two sides and connected with the stand columns through connecting plates, and the adjacent brackets are further connected through third elastic pull rods; the buffer mechanism is rotationally mounted on the bracket and is connected with the stand column through a first elastic pull rod; the supporting anchor rod comprises a connecting pipe installed on the buffering mechanism, the connecting pipe is connected with a cushioning pipe, and the cushioning pipe is connected with an energy absorption pipe. The first rotating base rotates at the lower end of the connecting pipe and is connected with the stand column through a second elastic pull rod.

The invention discloses a tunnel trolley supporting system and method intelligently adapting to geological conditions, and belongs to the technical field of tunnel safety supporting. The device comprises a supporting truss, a rigid supporting mechanism and a flexible supporting mechanism. Wherein the flexible supporting mechanism comprises an air bag which is used for preliminarily supporting the surrounding rock of the tunnel; the rigid supporting mechanism comprises a mounting frame, a plurality of air chambers are arranged in the mounting frame, and adjusting assemblies are arranged in the air chambers; the adjusting assembly comprises a piston plate and a piston rod located on the piston plate, and the free end of the piston rod penetrates through the mounting frame, then extends into the air bag and is connected with a supporting plate. The supporting plates are used for carrying out secondary supporting on the tunnel surrounding rock from the interior of the air bag, the supporting pressure of each supporting plate can be adjusted through the inflation pressure in the corresponding air chamber so as to adapt to different geological conditions, good self-adaptive capacity is achieved, and dynamic distribution of the surrounding rock pressure is achieved.

The invention discloses a protective device for safety of mining machinery, and relates to the technical field of mining equipment, in particular to a protective device for safety of mining machinery, which comprises a base, a rotating frame, a protective component and a supporting component, and a plurality of iron chisels used for being inserted underground are fixedly mounted on the lower surface of the base; the lower end of the rotating frame is hinged to one end of the base; and through the combination of multi-stage damping and elastic buffering, the absorption capacity to large impact force is greatly improved. When the impact force continuously acts to cause the first piston plate to move to a set distance, the distance sensor transmits a signal to the control panel, and the control panel starts the electromagnet, so that the magnetic particles in the magnetorheological fluid are orderly arranged in a solid-like state, the position of the piston assembly is locked, excessive rotation of the rotating frame is avoided, and the service life of the rotating frame is prolonged. Compared with a locking block clamping structure of an existing device, the locking block clamping structure has higher fixing reliability, the situation that the structure loses efficacy due to continuous impact is effectively prevented, and safety of mining machinery is guaranteed.

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 utility model provides an onboard temporary supporting device which comprises a supporting frame and supporting columns, the number of the supporting columns is two, the supporting columns are arranged on the two sides of a cutting arm of a heading machine respectively and rotationally connected with the cutting arm, and the ends, away from the heading machine, of the two supporting columns are rotationally connected with the supporting frame through two connecting bases respectively. Buffering assemblies are arranged on the two sides of the top face of the supporting frame respectively, a displacement assembly capable of moving in the tunneling direction of the tunneling machine is arranged at the front end of the supporting frame, and overturning assemblies allowing the supporting columns and the supporting frame to be overturned are arranged on the two supporting columns. The device is easy to operate and good in supporting effect, the buffering effect can be effectively achieved when coal mine rockfall occurs, and the service life of the supporting device can be effectively prolonged.

The invention relates to the technical field of tunnel engineering construction, and discloses an integral construction method for a stacked tunnel, which adopts an integral construction mode that no soil body is left in a crossed and overlapped section of an upper-layer main line tunnel and a lower-layer main line tunnel, and excavation and supporting structures are constructed in the same period, and specifically comprises the following steps: step 1, in a construction preparation stage, firstly, geological investigation is performed on a stacked area; and determining surrounding rock grades (III grade, IV grade and V grade) and geological parameters. The construction method has extremely high geological suitability, dynamic optimization is performed from multiple aspects such as an excavation mode, a support material ratio and monitoring frequency by establishing a surrounding rock grade-construction parameter matching model, and surrounding rock conditions with different stability from grade III to grade V can be flexibly adapted. And the temporary support is dismantled by adopting a segmented unloading technology, the dismantling sequence, the speed and the stress change are strictly controlled, impact on the completed lining structure is avoided, the section size is rechecked through a laser range finder after dismantling, and it is ensured that the construction quality reaches the standard.

The digging and anchoring integrated equipment comprises a machine body, an anchoring device and a temporary supporting device, the anchoring device comprises a working table and a first anchoring and protecting assembly, the working table is arranged on the machine body and can move relative to the machine body in the length direction of the machine body, and the first anchoring and protecting assembly is rotationally connected to the working table in the length direction of the machine body; the temporary supporting device comprises a supporting frame and a sliding top plate, the supporting frame is rotationally connected with the machine body, and a first driver is arranged between the supporting frame and the machine body and used for driving the supporting frame to rotate around the width direction of the machine body relative to the machine body; the sliding top plate is slidably connected with the supporting frame, a second driver is arranged between the supporting frame and the sliding top plate, and the second driver is used for driving the sliding top plate to move towards the roadway head-on direction relative to the supporting frame so as to form advanced temporary supporting. According to the invention, zero empty roof can be realized, integrated and automatic operation of roadway tunneling and anchoring operation is completed, and the construction efficiency and quality are greatly improved.

The invention discloses a roadway folding supporting arch type self-adaptive sliding supporting device and a supporting method thereof, and belongs to the field of roadway rapid supporting. A supporting assembly used for supporting the top of a roadway is arranged at the top of a supporting cross beam, and the supporting cross beam moves upwards through an external lifting assembly; two I-shaped side connecting frames are symmetrically and fixedly connected to the top of the supporting cross beam, fixed rails are fixedly connected to the two sides of an inner cavity of the roadway through bolts, and the supporting assembly comprises first hydraulic rods symmetrically and fixedly connected to the two sides of the supporting cross beam and a second hydraulic rod located in the middle of the top end of the supporting cross beam; according to the roadway folding supporting arch type self-adaptive sliding supporting device and the supporting method thereof, the top of a roadway can be rapidly supported, self-adaptive adjustment can be conducted according to the actual situation of the roadway, the roadway folding supporting arch type self-adaptive sliding supporting device can be flexibly unfolded and tightly attached to the top plate and the side wall of the roadway in the installation process, the supporting speed is increased, and the supporting stability is improved.

The invention discloses a surrounding rock comprehensive treatment system which comprises an arc-shaped top, bearing frames are arranged on the two sides of the lower side of the arc-shaped top, bottom frames are arranged on the lower sides of the bearing frames, inserting pieces are arranged on the lower side of the arc-shaped top and the lower sides of the bearing frames, and inserting grooves corresponding to the inserting pieces are formed in the upper sides of the bottom frames and the upper sides of the bearing frames. An auxiliary supporting piece is arranged on the lower side of the bottom frame. The invention relates to the technical field of surrounding rock treatment, through the unique insertion design, the arc-shaped top, the bearing frame and the bottom frame are matched through the insertion pieces and the insertion grooves, rapid and accurate butt joint can be achieved, the insertion pieces are reasonable in structure, the transmission rod, the sleeve and the gear are driven to rotate through the handle, flexible matching with the six-edge block and other components is achieved, and the practicability is high. And the assembly mode can be flexibly adjusted according to the actual specification of the tunnel.

The utility model discloses a large-section hydraulic tunnel main adit intersection excavation support door frame in the technical field of tunnel construction, which comprises a reinforcing door frame and a connecting piece, the reinforcing door frame comprises outer door beams and inner door beams, a semicircular door beam is fixedly connected between the top ends of the inner door beams, and a door frame cross beam is fixedly connected between the tops of the outer door beams; the semicircular door beam is connected with the inner side of the portal cross beam, linear reinforcing ribs are fixedly arranged between the outer door beam and the inner door beam, a plurality of sections of inclined reinforcing ribs are fixedly arranged between the semicircular door beam and the portal cross beam, oblique angle supporting pieces are jointly connected between the tops of the inclined reinforcing ribs, and the oblique angle supporting pieces are fixedly connected between the outer door beam and the portal cross beam at the same time; according to the utility model, the outer door beam can be connected and fixed with the main hole support, the inner door beam and the semicircular door beam are in transition connection with the branch hole bracket, and the outer door beam and the inner door beam are connected through the linear reinforcing rib, so that the support at the intersection forms a whole, the stress is dispersed, and a good support effect is provided.

This invention relates to the field of coal mining technology, and more particularly to a personal protective device (PPE) for underground operations, comprising a drive base, a support frame, a lifting platform, a first protective component, and a second protective component. When in the protective state, the first and second protective components are in contact; when in the working state, they are separated. The advantages are that the cooperation between the drive base and the support frame allows the support frame to move along the length of the drive base; the lifting platform can lift workers to the working position on the tunnel roof, avoiding physical fatigue caused by prolonged overhead work. The first and second protective components can switch between the protective and working states: in the protective state, they are in contact to form a top protective structure, effectively shielding against falling rocks or broken rock fragments from the tunnel roof; in the working state, they are separated to create operating space, facilitating normal roof work for workers.

The utility model relates to the technical field of coal mine roadways, in particular to a roadway reinforcing device for coal mine roadway tunneling, and solves the problems that the roadway reinforcing mode in the prior art is too single and lacks an adjusting function, so that the inner walls of roadways with different heights are inconvenient to reinforce at any time, and the roadway reinforcing convenience is greatly reduced. The roadway reinforcing device for coal mine roadway tunneling comprises a base, a bearing frame is fixedly connected to one side of the top of the base, hydraulic oil cylinders are fixedly connected to the two sides of the bottom of the inner side of the bearing frame through bolts, and a bearing plate is slidably connected to one side of the inner side of the bearing frame; and output shafts of the two hydraulic oil cylinders are fixedly connected with the bottom of the bearing plate. The roadway reinforcing device not only has height adjusting flexibility and reinforcing accuracy, but also has strong supporting force and stability, effectively solves the problems existing in a traditional roadway reinforcing mode, and greatly improves roadway reinforcing convenience and efficiency.

The utility model discloses a mine tunnel supporting device for lead-zinc mining, and relates to the technical field of mining engineering. The lifting device comprises a bottom plate, a lifting assembly is arranged on the upper surface of the bottom plate, the lifting assembly comprises a supporting column vertically connected to the upper middle portion of the bottom plate, a hollow column is arranged on the peripheral side of the supporting column in a sleeved mode, limiting blocks distributed at equal intervals are arranged on the two inner side walls of the hollow column, and hinged supporting blocks are arranged on the upper edges of the two side walls of the supporting column. The end of a reset spring connected to the side wall of the supporting block in parallel is connected to the side wall of the supporting column, and the upper surface of the supporting block is erected on the lower surface of the limiting block. A supporting assembly is arranged on the upper surface of the hollow column. The lifting assembly is arranged to support the mine tunnels with different heights, the practicability is improved, the supporting assembly is arranged, the stability of the movable plate and the supporting plate is improved, the stability effect of supporting the lead-zinc mine tunnels is improved, the lead-zinc mine tunnels with different sizes are supported, and the practicability is improved.

The utility model relates to the field of subway civil engineering technology, especially a kind of temporary support equipment for subway civil engineering construction. Including two groups of main support plate and several vice support plates, two groups of main support plate are fixedly connected through upper and lower two fixed beams, several vice support plates are arranged between two groups of main support plate, and are slidably connected with fixed beam, folding assembly is arranged between adjacent support plate, two groups of fixed plates are fixedly arranged in main support plate side, fixed plate bottom is fixedly provided with support base, and support assembly is also provided in the side of main support plate close to support base. The utility model is closely attached to the side wall of tunnel by main support plate and several vice support plates, the inner wall of tunnel on the rear side of adjacent two vice support plates is exposed by vice support plate sliding, so that wall behind vice support plate is anchored rod construction, so that local tunnel inner wall is constructed.

The utility model discloses a rock burst supporting mechanism for TBM tunneling, relates to the technical field of TBM construction, and can solve the problem that an existing supporting structure may have a breakdown phenomenon in the protection process. The rock burst supporting mechanism for TBM tunneling comprises an arc-shaped base plate, a plurality of protection tiles arranged on the outer convex face of the arc-shaped base plate and an energy discharging assembly arranged between the protection tiles and the arc-shaped base plate.

The utility model provides a supporting device for construction of a shield under a railway, belongs to the technical field of tunnel construction, and aims at solving the problems that an existing tunnel supporting frame is tedious to mount and dismount, too many supporting rods exist, and construction is inconvenient. Comprising an outer support ring; the rotation control mechanism is rotationally installed on the inner side of the outer supporting ring. The power connecting assembly is installed on the inner side of the outer supporting ring and connected with the rotation control mechanism. The sliding supporting mechanism is connected with the outer supporting ring. The supporting control mechanism is connected with the rotation control mechanism and the sliding supporting mechanism. The inner top plate contracts and is convenient to move, and the top plate extends and is convenient to carry out auxiliary supporting on a tunnel hole; the multiple sets of top plates can slide, dismounting and mounting of the device are rapidly completed, dismounting and mounting are easy and convenient, the number of supporting rods is small, and construction is convenient.

The utility model belongs to the field of mine safety, and particularly relates to an anti-falling supporting frame for underground work. According to the technology, a steel wire mesh is included, a plurality of mounting columns are arranged below the steel wire mesh, and the upper end of each mounting column is provided with a driving mechanism used for abutting the steel wire mesh against the top of a mine; the driving mechanism comprises a mounting block, the bottom of the mounting block is connected with the mounting column through a hydraulic cylinder, a supporting plate in vertical sliding fit with the mounting block is arranged above the mounting block, the steel wire mesh is fixed to the top of the supporting plate through a connecting assembly, and a detecting assembly used for detecting supporting force is mounted between the supporting plate and the mounting block. And a gas concentration detector and an audible and visual alarm are mounted on the mounting block. According to the utility model, the steel wire mesh is supported on the mine roof through the driving mechanism, and roof caving accidents can be prevented and eliminated in advance from two aspects of detecting the change of supporting force and the change of gas concentration, so that economic loss and casualties are reduced.

The utility model provides an adjustable portable mining temporary support, and belongs to the technical field of supports. Comprising a screw rod and supporting rods in threaded connection with the two ends of the screw rod, a plurality of holding rods are fixed to the middle of the screw rod, a plurality of floor inserting plates are fixed to the ends of the two supporting rods, the supporting assembly comprises a fixing ring fixed to the outer wall of the supporting rod located on the lower portion, and a sliding ring is arranged below the fixing ring; and the sliding ring movably sleeves the outer wall of the supporting rod. Through the arrangement of the fixed ring, the sliding ring and the Z-shaped rod, in the using process, the Z-shaped rod and the floor inserting plate are in contact with the ground for supporting at the same time, the sliding ring is clamped on the surface of the floor inserting plate through the first positioning groove, a constructor can step on the Z-shaped rod to stabilize the supporting rod and prevent the supporting rod from inclining and rotating, the supporting rod does not need to be supported by multiple persons, and the operation process is simplified; the Z-shaped rods are synchronously supported on the ground, the bottom stress area of the supporting rods is enlarged, the supporting rods are prevented from sinking into the ground, and the supporting stability is enhanced.

The utility model relates to the technical field of civil engineering construction, and discloses a subway construction supporting device which comprises a movable bottom plate, the upper end of the movable bottom plate is connected with a supporting frame and a rotating motor, connecting plates are hinged to the two sides of the upper end of the supporting frame, and the other ends of the connecting plates are hinged to the middle of a supporting plate. One end of the rotating rod is rotationally connected with the supporting frame, and the other end of the rotating rod is in transmission connection with an output shaft of the rotating motor; the connecting ring is in threaded connection with the rotating rod and is in sliding connection with the supporting frame; the two telescopic assemblies are oppositely arranged on the side wall of the connecting ring, and the other ends of the telescopic assemblies are hinged to the lower end of the supporting plate; the extension plate is detachably connected with the supporting plate in a sliding mode in the vertical direction, and the extension plate is detachably connected with the side wall of the foundation pit through a fixing piece. The supporting device can provide full-range supporting for the side wall of the foundation pit.

The invention relates to the technical field of coal mine tunnel supporting, and discloses a supporting device for a mine fracture structure, which comprises a bracket, a rotating support plate rotationally mounted on the bracket and a through groove formed in the side wall of the bracket, and further comprises a supporting air bag fixedly mounted on the bracket and the rotating support plate, a driving part is arranged at the lower end of the rotating support plate, and a driving part is arranged at the lower end of the supporting air bag; the driving part comprises a mounting block which is fixedly mounted on the side wall of the support, an air cylinder is hinged to the mounting block, and the end, away from the mounting block, of the air cylinder is hinged to the rotating supporting plate. Through cooperation of the supporting air bag and the transfer part, when waste rocks fall off from a top plate, a cavity can appear, the waste rocks enter the transfer part through the guide part, gas in the transfer part enters the supporting air bag through the gas conveying pipe, the supporting air bag moves towards the cavity, and gas accumulated in the cavity can be extruded out; the gas sensor installed near the supporting structure can sense the change of the gas, so that the gas is prevented from being accumulated in the cavity, and potential safety hazards are avoided.

The invention relates to the technical field of coal mining, in particular to an underground working face matching rapid construction method which comprises the steps of preparation before installation, open-off cut face expansion, hydraulic support installation, temporary supporting, permanent supporting, working face advancing and finished face acceptance. Wherein the open-off cut face expansion mode and the hydraulic support installation sequence are selected according to the stability of the top plate, when the top plate is stable, open-off cut face expansion work is completed at a time, and the hydraulic support is installed in a retreating mode; when a top plate is broken or mine pressure is large, a segmented face expansion or side face expansion installation mode is adopted, and the hydraulic support is installed in an advancing mode. The construction method that the open-off cut face expansion mode and the hydraulic support installation sequence are selected according to the stability of the top plate is adopted, the construction mode is highly matched with the condition of the top plate, and the deformation and collapse risks of the top plate are effectively controlled. Meanwhile, the working face is subjected to face expansion and support installation in a segmented mode, so that face expansion and support installation are conducted synchronously, the working face empty roof time is shortened, and the construction safety and efficiency are improved.

The utility model relates to the technical field of hydraulic supports, and discloses a hydraulic support capable of being integrally pulled and withdrawn. The hydraulic support capable of being integrally pulled and withdrawn comprises a support body, a base is arranged at the bottom of the support body, connecting shafts are installed at the left end and the right end of the base in a penetrating mode, a front roller frame is movably installed on the left side of the base, a front supporting roller is movably installed at the tail end of the front roller frame, and a rear roller frame is movably installed on the right side of the base. A front supporting roller is movably installed at the tail end of the front roller frame, a rear supporting roller is movably installed at the tail end of the rear roller frame, a base is fixedly installed above the base, a switching block is movably installed in the base, after the adjusting piston reaches the extension limit, the base can be lifted through the front roller frame and the rear roller frame, and the base and the support are supported through the front supporting roller and the rear supporting roller; the front supporting roller and the rear supporting roller are rotationally connected with the front roller frame and the rear roller frame correspondingly, and in the pulling and withdrawing process, resistance can be reduced in a rotating mode, so that moving is facilitated.

The utility model discloses a flexible protective device for treating a collapsed cavity at the top of a tunnel, which comprises at least two flexible protective nets which are arranged from top to bottom and connected to the inner wall of the collapsed cavity, and the aperture of the lower part of each flexible protective net is smaller than that of the upper part of each flexible protective net. The protective net is composed of a steel wire rope protective net body and a twisted-pair hexagonal flexible net body, the steel wire rope protective net body is formed by rhombic weaving of Galfan coating steel wire ropes, and the twisted-pair hexagonal flexible net body is formed by weaving of A-grade Galfan coating steel wires, overlaps the edge of the steel wire rope protective net body by 10-20 cm and is tied. The steel wire rope protective net is formed by splicing meshes of different specifications, splicing follows a specific principle, and steel wire rope buckles are used for connection. The device is further provided with anchor rods, spring hooks and other components, and the number and size of the components are determined according to the three-dimensional data of the collapsed cavity. Compared with a traditional protective net, the device can effectively absorb rockfall energy, is good in buffering effect, high in adaptability to different collapse cavities, easy and convenient to install and capable of reducing construction risks and guaranteeing tunnel construction and operation safety.

The utility model belongs to the field of buildings, and particularly relates to an assembly type temporary supporting structure in a shield tunnel, which is formed by connecting a plurality of steel bar supports. The multi-truss steel bar bracket is formed by connecting I-shaped steel components through high-strength bolts; the I-shaped steel component comprises a bottom supporting frame, two vertical rods connected with the two ends of the bottom supporting frame, a top supporting frame with one end connected with the vertical rods and a first transverse rod connected with the other end of the top supporting frame. According to the structure, the full-equipment assembly type detachable technology is achieved, disassembly and transportation are convenient, due to the fact that an industrial production method and the assembly type detachable technology are adopted, components can be replaced at any time, different construction conditions can be coped with by replacing the components in different site environments, and therefore the construction cost is saved, and the construction efficiency is improved. The construction period is shortened, and the construction efficiency is greatly improved.

The invention relates to an auxiliary mounting tool and method for a flexible track mechanism for a coal mine, the auxiliary mounting tool comprises bases arranged on two opposite sides and moving blocks arranged on the bases on the two sides in a sliding mode, each moving block is in threaded connection with an adjusting piece, and one end of each adjusting piece penetrates through the corresponding moving block. The auxiliary installation tool further comprises blocking parts which are arranged on the bases on the sides and abut against one ends of the adjusting pieces on the corresponding sides and connecting rods connected between the moving blocks on the two sides, the adjusting pieces are rotated to drive the moving blocks to slide in the sliding direction, and then the connecting rods are made to be away from or close to the blocking parts. When the auxiliary mounting tool is used for mounting the crawler belt, the labor intensity can be greatly reduced, and the mounting efficiency of the flexible crawler belt mechanism is improved.

The utility model discloses a coal mine large-span chamber reinforced supporting structure which comprises bottom plates, supporting columns, an upper arch-shaped supporting plate, supporting blocks, a lower arch-shaped supporting plate, supporting grooves, a stress dispersion stabilizing structure and an anchor rod supporting structure, the supporting columns are fixed to the top ends of the left bottom plate and the right bottom plate respectively, and the upper arch-shaped supporting plate is installed at the top ends of the left supporting column and the right supporting column. The supporting blocks are fixed to the upper portions of the inner sides of the supporting columns respectively, the lower arch-shaped supporting plate is fixed to the top ends of the left supporting block and the right supporting block, the supporting grooves are formed between the upper arch-shaped supporting plate and the lower arch-shaped supporting plate, and the stress dispersion stabilizing structures are installed in the front supporting groove and the rear supporting groove. The anchor rod supporting structures are installed on the left portion and the right portion of the stress dispersion stabilizing structure correspondingly. According to the utility model, the connection strengthening of the arched support plate for supporting the top is beneficial to dispersing stress and improving the overall stability.

The utility model relates to the technical field of coal mine supporting, and discloses a supporting structure of a coal mine tunnel, which comprises an extension plate, the left side and the right side of the extension plate are both connected with supporting plates in a sliding mode, the sides, away from each other, of the two supporting plates are both fixedly connected with fixing frames, and a rotating shaft is rotatably connected between the fixing frames. Pulleys are fixedly connected to the front end and the rear end of the outer wall of the rotating shaft, a lifting plate is rotatably connected to the outer wall of the rotating shaft, a supporting plate is slidably connected to the bottom of the outer wall of the lifting plate, sliding grooves are formed in the front side and the rear side of the lifting plate on the left side, and inserting plates are slidably connected to the inner walls of the two sliding grooves. According to the folding and fixing device, the supporting plates are relatively rotated, the inserting plates are uniformly slid rightwards to be inserted into the inserting grooves in the right side, the inserting plates are fixed by rotating the reinforcing bolts, and therefore folding and fixing treatment of the device is completed, and portable moving treatment of the device is achieved through the pulleys.

The invention discloses a detachable tunnel face supporting and shoring connection integrated device, and belongs to the technical field of tunnel construction.The device comprises a primary shoring structure, a plurality of supporting modules are distributed in the circumferential direction of the primary shoring structure at intervals, and the multiple supporting modules are installed between the primary shoring structure and a tunnel face in parallel; the supporting module comprises a telescopic folding assembly, a hydraulic pump, a supporting beam and a buffering cushion, the supporting module supports the tunnel face in the longitudinal direction of the tunnel, the telescopic folding assembly can stretch out and draw back in the longitudinal direction of the tunnel, one end of the telescopic folding assembly is connected with the primary supporting structure, and the other end of the telescopic folding assembly is connected with the hydraulic pump. The output end of the hydraulic pump faces one side of the tunnel face and is connected to one end of the supporting beam. The tunnel face can be temporarily supported, the instability collapse risk of the surrounding rock of the tunnel face is resisted, meanwhile, the surrounding rock deformation is controlled, and the subsequent excavation operation safety and the long-term stability of the tunnel structure are ensured.