1023results about "Mine roof supports" patented technology

The invention provides a tunnel support self-adaptive adjusting method and system based on rock mass-support feedback, and relates to the technical field of tunnel engineering support. The method comprises the following steps: acquiring surrounding rock strain data and stress data through a sensor network arranged in tunnel surrounding rock, and generating original monitoring data; calculating the surrounding rock strain energy density by using a data processing unit; matching the strain energy density with a preset energy stage feature through an adaptive control algorithm to generate an energy stage matching result; determining an energy state stage based on a stage confirmation module and generating an energy stage identifier; a supporting mode switching instruction is generated through a supporting mode mapping querier; and finally, the supporting control unit adjusts the working parameters of the supporting structure, real-time monitoring of the energy state of the surrounding rock and dynamic matching of the supporting parameters are achieved, the adaptability and safety of tunnel supporting are effectively improved, and the hysteresis of manual intervention is reduced.

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 provides an automatic yielding type electric support and a yielding method, and relates to the technical field of electric supports, the automatic yielding type electric support comprises a top beam, a supporting frame and a buffering device, and the top beam can ascend and descend relative to the ground; the two supporting frames are arranged side by side, each supporting frame comprises a shield beam, a connecting rod, a stand column electric cylinder and a base, the shield beams are connected with the top beam in a pivoted mode, and the ends, away from the top beam, of the shield beams are connected with the upper ends of the connecting rods in a pivoted mode; the lower end of the connecting rod and a cylinder body of the stand column electric cylinder are both connected with the base in a pivoted mode. The buffering device comprises a yielding cylinder and an overflow valve, a cylinder body of the yielding cylinder is connected with a piston rod of the stand column electric cylinder, the piston rod of the yielding cylinder is connected with the top beam in a pivoted mode, and the overflow valve is arranged at an outlet of a first cavity of the yielding cylinder. When the top plate is pressed, the top beam can automatically descend to yield pressure through the buffer device, and the problem that a support structure is damaged due to the fact that an electric cylinder does not act in time can be effectively solved.

The invention relates to the technical field of hydraulic support intelligent supporting scheme design, in particular to a hydraulic support intelligent supporting method and system and electronic equipment. The method comprises the following steps: collecting roof pressure, bracket attitude and geological structure parameters in real time through a multi-modal sensor array; performing spatio-temporal feature fusion by utilizing the edge computing nodes to generate a three-dimensional support state map; constructing a dynamic weight adjustment strategy based on a reinforcement learning algorithm, and generating multi-objective optimization support parameters; a control instruction is issued through a dual-mode communication network to realize self-adaptive adjustment of the supporting strength; and a closed-loop feedback verification mechanism is established in combination with the laser radar scanning roof sinkage. And a digital twin model and an energy consumption optimization function are integrated. The problems that a traditional method is single in data dimension, rigid in decision and insufficient in reliability are solved, dynamic optimization of support parameters, active prevention and control of risks and collaborative improvement of energy efficiency are achieved, and the support safety and the intelligent level under complex working conditions are remarkably improved.

The invention discloses a supporting device for a hard rock roadway, and relates to the technical field of roadway mining supporting, the supporting device comprises a support body, telescopic supporting legs are fixedly installed at the bottom of the support body, supporting leg protection mechanisms are arranged at the bottom ends of the telescopic supporting legs and used for enabling the supporting leg protection mechanisms to be evenly stressed when the supporting leg protection mechanisms make contact with the ground, and each supporting leg protection mechanism comprises a plurality of installation sleeves; and each mounting sleeve is fixedly connected with the bottom end of the adjacent telescopic supporting leg. The technical means that the adjusting part and the auxiliary assembly are matched is adopted, when a protruding ground condition is met, according to the size of the protrusion, part of the adjusting part is influenced by the protruding part to slide upwards, other uninfluenced parts continue to conduct auxiliary supporting work, and therefore the situation that when the telescopic supporting leg is used, when the bottom end makes contact with the hard protruding part, the telescopic supporting leg is damaged is effectively avoided. The problem that the support and the telescopic supporting leg are inclined due to local stress is solved, the defects in the prior art are overcome, and the service life of the telescopic supporting leg is prolonged.

The invention discloses a hydraulic support intelligent sensing and monitoring system based on an MEMS technology, and relates to the technical field of mine intellectualization and automation. The remote monitoring platform is in communication connection with an MEMS inertial measurement sensor module, an error compensation calibration module, a tilt angle sensor module, an autonomous north-seeking algorithm module, a data transmission communication module, an electro-hydraulic control system module and a remote monitoring alarm module. By integrating the high-precision MEMS inertial measurement sensor and the tilt angle sensor, the posture change of the hydraulic support can be accurately monitored in real time, and compared with a traditional manual detection and regular inspection mode, the acceleration, the angular velocity, the tilt angle, the position and other key parameters of the support can be monitored in real time; the accuracy and the real-time performance of attitude monitoring are greatly improved, the high-precision and real-time monitoring capability of the system provides more reliable technical support for safety production of a coal mine, and safety accidents caused by abnormal attitude of the support are effectively prevented.

The invention provides a control method of fully-mechanized coal mining equipment and a coal mining machine, and relates to the technical field of coal mining machinery control. The control method of the fully-mechanized coal mining equipment is applied to a coal mining machine and comprises the following steps: acquiring running state information of the coal mining machine; according to the operation state information of the coal mining machine, a target hydraulic support to be cooperatively controlled is determined from multiple hydraulic supports, and the multiple hydraulic supports and the coal mining machine are located on the same working face; based on the transmission channel between the coal mining machine and the target hydraulic support, first information is sent to the target hydraulic support, and the first information is used for the target hydraulic support to determine cooperative action. According to the technical scheme, the cooperative efficiency between the coal mining machine and the hydraulic support can be improved, and then the mining efficiency is improved.

The present application relates to the technical fields of mine hydraulic support, in particular to a high-stability mine hydraulic support, which comprises a base, a connecting rod installed on one side of the base, a shield beam installed on the end of the connecting rod, a top beam installed on the end of the shield beam, and a hydraulic cylinder installed between the top beam and the base, wherein a sleeve is fixedly installed on the base outside the hydraulic cylinder, a first threaded part is installed between the output end of the hydraulic cylinder and the top beam, and the thread angle of the first threaded part is greater than the equivalent friction angle; the output shaft of the hydraulic cylinder is elongated or shortened to drive the first threaded part and the second threaded part to synchronously ascend and descend, thereby supporting the top beam; when the hydraulic cylinder fails to provide support power, the second threaded part plays a self-locking function through the thread angle being less than the equivalent friction angle, thereby stably supporting the top beam, and external equipment is not needed for support, thereby avoiding the collapse risk caused by the top beam failing to continuously provide support effect.

This invention discloses a transition hydraulic support control method, electronic equipment, and control system. The transition hydraulic support control method includes a top coal caving process, which involves acquiring a top coal caving signal; adjusting the coal caving device of the transition hydraulic support to retract to a preset posture to form a coal caving window and caving coal; collecting the acoustic characteristic spectrum of the top coal collapse; performing time-domain analysis of the vibration signal based on the acoustic characteristic spectrum to obtain data information; determining whether the gangue content in the top coal exceeds a preset value based on the data information; if so, and the duration exceeds a first preset time, issuing a termination command for coal caving; and controlling the coal caving device to extend and close the coal caving window. This invention, based on the frequency and amplitude differences of the impact vibrations generated on the transition hydraulic support by falling coal and gangue, combined with algorithm analysis, can dynamically distinguish the state of coal and gangue, thereby accurately determining the timing of coal caving termination, preventing excessive gangue caving, and effectively improving the extraction rate and coal quality.

The invention relates to the technical field of coal mine tunnel supporting, in particular to a coal mine tunnel safety supporting system which comprises a supporting assembly, a driving assembly and a head-on protection unit, and a front supporting frame and a rear supporting frame in the supporting assembly are in sliding fit through a supporting piece; the driving assembly adopts a motor to drive a screw block to achieve spring alternate energy storage, a supporting hydraulic cylinder is combined to control state switching of the supporting frames, a moving frame is driven through spring energy release, and after the controller receives data of the heading machine and the scraper conveyor, the front supporting frame and the rear supporting frame are controlled to move forwards alternately, and the head-on protection unit conducts follow-up protection. The system realizes cooperative linkage with the heading machine and the scraper conveyor, improves the machine following and support moving efficiency, reduces the risk of empty roof, and ensures the safety of roadway support.

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 discloses a coal cutter cutting interference prevention method and system based on point cloud and infrared images. The method comprises the steps that a radar sensing module and an infrared sensing module are installed; synchronously acquiring three-dimensional point cloud data and infrared image data of the target monitoring area; the three-dimensional point cloud data and the infrared image data are preprocessed, aligned in the time dimension and registered in a space coordinate system; performing feature extraction on the three-dimensional point cloud data and the infrared image data, performing feature fusion, and extracting space attitude parameters of the face guard; carrying out risk grade discrimination, and marking an interference position; and generating a risk avoiding control instruction according to the risk level, and executing a risk avoiding adjustment action. According to the system, a processing module comprises a data preprocessing module, a multi-modal information fusion module, an identification module and a decision control module, and the processing module is connected with a radar sensing module and an infrared sensing module. According to the invention, accurate monitoring and active prevention of the cutting interference state of the side protection plate and the coal mining machine roller can be realized.

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 short-wall continuous mining and continuous filling mining method, and relates to the technical field of coal mining, the short-wall continuous mining and continuous filling mining method comprises the following steps: S1, tunneling two roadways, one is a filling auxiliary branch roadway, the other is a coal mining auxiliary branch roadway, and the filling auxiliary branch roadway and the coal mining auxiliary branch roadway are both communicated with an air inlet gate road and an air return gate road; s2, coal mining is conducted in the inclined direction between the filling auxiliary branch roadway and the coal mining auxiliary branch roadway, and a coal mining roadway is formed; s3, when a second coal mining roadway adjacent to the first coal mining roadway is mined, the first coal mining roadway is filled, and the first coal mining roadway and the second coal mining roadway are communicated all the time; s4, repeating the steps S2 and S3; and S5, the filling auxiliary branch roadway, the coal mining auxiliary branch roadway, the air inlet crossheading and the air return crossheading are all blocked. The invention further discloses a roadway structure which is formed through the short-wall continuous mining and continuous filling mining method. Generation of circulating air can be avoided, and mining safety is improved.

The utility model relates to the technical field of coal mining, in particular to a fully-mechanized mining hydraulic support anti-tilting interlocking device which comprises a hydraulic support base, a concave fixing seat is fixedly arranged on one side of the hydraulic support base, and a sliding locking device is fixedly arranged on the other side of the hydraulic support base. The concave fixing seats and the sliding locking devices on the two adjacent hydraulic support bases are connected through connecting devices. When the hydraulic support base moves forwards, the connecting ball can slide in the spherical groove, sliding friction resistance between the connecting ball and the spherical groove is small, and forward movement of the hydraulic support base is not restricted. The connecting ball is arranged in the spherical groove, cannot slide in the inclined direction of the working face and plays a role in supporting and limiting. The output end of the hydraulic telescopic cylinder can stretch out and draw back, and the distance between the two hydraulic supports can be adjusted through orderly stretching out and drawing back. A gap is reserved between the open groove and the output end of the hydraulic telescopic cylinder, a gap is reserved between the connecting ball and the spherical groove, and the hydraulic support base can be finely adjusted in the inclined direction of the working face.

The invention discloses a fully mechanized coal mining hydraulic support electrohydraulic control system based on deep learning, and the system comprises a data collection and topology construction module which is used for collecting multi-source real-time data and constructing a support topology adjacency matrix; the data preprocessing and dynamic topology updating module is used for preprocessing the original data set and dynamically updating the initial topology adjacency matrix; the space-time diagram convolution depth autoregression modeling module is used for outputting a future multi-step prediction result set based on a space-time diagram convolution depth autoregression network model; the underground safety constraint judgment module is used for performing underground safety constraint judgment; the control instruction generating and issuing module is used for generating an electro-hydraulic control instruction set; and the execution feedback and model closed-loop updating module is used for collecting real-time state data, updating the preprocessed data set and enhancing the spatial-temporal characteristic sequence. According to the invention, the space-time diagram convolution depth autoregressive network is adopted to realize intelligent control of the fully-mechanized mining hydraulic support.

The invention relates to a hydraulic support base for potassic salt ore. The hydraulic support base comprises a first base body, a second base body, a gap bridge plate, a first connecting pin and a second connecting pin. Strip-shaped holes extending in the vertical direction are formed in the two ends of the gap bridge plate; a first lug plate is arranged on the inner side of the first base, and a second lug plate is correspondingly arranged on the inner side of the second base; the long-strip-shaped holes in the two ends of the gap bridge plate are hinged to the first lug plate and the second lug plate through a first connecting pin and a second connecting pin respectively. The axial directions of the first connecting pin and the second connecting pin are front and back directions; the first connecting pin and the second connecting pin can slide along the long-strip-shaped hole, dislocation of the first base and the second base is achieved, and therefore the support can cope with potassic salt ore bottom plates of different forms, and the support has the advantages that local suspension or stress concentration caused by unevenness of the potassic salt ore bottom plates can be effectively avoided, and the stability of the support under the potassic salt ore complex terrain is maintained. And the position of the base can be flexibly adjusted according to site ground conditions, installation is rapidly completed, and the installation time is greatly shortened.

The invention belongs to the technical field of mining machinery automation control, and relates to a hydraulic support multi-objective optimization control method for temporary support of mine roadway tunneling, which comprises the following steps: constructing a state vector and a continuous state equation of a hydraulic support system and discretizing to obtain a discrete state space model; displacement and pressure synchronous tracking of the hydraulic support system is taken as a target, a model prediction controller is adopted to carry out rolling optimization search of a control quantity under a variable constraint condition, an expansion state observer is combined to estimate total disturbance of the hydraulic support system in real time, the total disturbance is fed forward and compensated into the model prediction controller, and a final control quantity is generated; and constructing an asymmetric coupling synchronous network by taking the master cylinder as a benchmark, and forming cooperative control of the master cylinder and the slave cylinder by adopting a synchronous deviation mechanism and a final control quantity to finish multi-objective optimization control of the hydraulic support. According to the invention, safe, efficient, stable and energy-saving accurate control of a single hydraulic column and multi-target cooperative control of pump-controlled multiple hydraulic columns can be realized.

The invention relates to an anti-falling and anti-skidding support for a longwall working face in a large-dip-angle and large-mining-height trend, which belongs to the technical field of coal mining and comprises a top beam and a base. The top beam can be connected with the base through a lifting stand column, a shield beam is arranged at one end of the top beam and connected with the base through a connecting rod, side protection plates are arranged on the two sides of the top beam respectively, side protection ball devices are arranged on the side protection plates, and sliding ways located below the side protection ball devices are arranged at the bottoms of the two sides of the top beam respectively. A balance adjuster is slidably arranged on the slide way, and lateral supporting base devices are arranged on the two sides of the base respectively. Through dynamic gravity center adjustment, rolling friction design and active hydraulic supporting, the stability of the large-dip-angle and large-mining-height working face is remarkably improved, the support moving resistance is reduced, the support adjusting time is shortened, the problems of support toppling and sliding and roof leakage are effectively solved, and safe and efficient mining is guaranteed.

The utility model relates to the technical field of coal mine tunnel supporting, in particular to a turnover type sliding anchor drilling platform which comprises a lower layer fixing platform assembly and an upper layer sliding platform assembly. The upper-layer sliding platform assembly comprises a left anchor drill platform and a right anchor drill platform. The left anchor drilling platform and the right anchor drilling platform are each provided with two sets of top anchor devices and one set of side anchor devices. Small-angle adjustment of the upper-layer top anchor device in the front-back direction and the left-right direction is achieved, meanwhile, the upper-layer top anchor device can rotate forwards by 90 degrees to achieve large-angle adjustment, and the top anchor device is located in a top-free area at the upper end of the cutting part. The upper-layer side anchor device supports the side wall and can adapt to different row pitch construction, the anchor rod supporting construction range and angle are guaranteed, and multi-degree-of-freedom, multi-angle and wide-range flexible and efficient supporting operation suitable for low roadways and small empty top distance complex geological conditions is achieved.

The utility model discloses a hydraulic support roof-contacting device, belongs to the technical field of coal mining equipment, and solves the problem that support top beams of hydraulic supports are not compactly contacted with the roof due to unevenness of roadway roofs. Comprising a closed high-pressure liquid tank, the lower portion of the high-pressure liquid tank is detachably connected with a support top beam of a hydraulic support, a plurality of floating type roof-contacting mechanisms are arranged on the upper portion of the high-pressure liquid tank, driving parts of the floating type roof-contacting mechanisms are located in the high-pressure liquid tank, and roof-contacting parts of the floating type roof-contacting mechanisms are located above the top of the high-pressure liquid tank. And a high-pressure liquid medium with a constant volume is arranged in a liquid cavity of the high-pressure liquid tank. The hydraulic support is reasonable in design, compact in structure and capable of automatically adjusting the telescopic length of a plurality of floating type roof contact mechanisms according to the actual shape of the roadway roof so as to be tightly attached to the uneven and undulating roadway roof, and the supporting effect and the use safety of the hydraulic support are effectively improved.

The invention relates to the technical field of coal mining in a coal mine, in particular to a manufacturing method of a hydraulic support single base and a split base, in the manufacturing process of the single base, the same positioning reference is selected to ensure the consistency of the reference, and meanwhile, a gap bridge plate connecting seat positioning hole and a gap bridge plate lug seat positioning hole are additionally formed in the single base to ensure the stability of the single base. The single bases are used for providing a positioning reference for the gap bridge plate connecting base and the gap bridge plate lug base, a column nest center positioning hole and two newly-added holes are machined at the same time with the same reference so as to ensure the consistency of the holes, and the consistency of the hinged portions of the single bases can be further ensured by selecting the same positioning reference for the single bases. According to the hydraulic support disclosed by the utility model, the problems that the installation is difficult due to the poor consistency of the hinged parts of the single bases, and the two single bases which are assembled together are easy to step forwards and backwards in the subsequent use process are avoided, so that the adaptability of the hydraulic support to complex geological conditions is improved, and the stability and the safety of the support are ensured.

The invention relates to a hydraulic support for potassic salt ore. The hydraulic support comprises a top protection plate, two supporting jacks, two arc-shaped side protection plates, two side protection drivers, a gap bridge plate and a pin shaft. The top protection plate is arranged at the tops of the two supporting jacks; the two arc-shaped side protection plates are hinged to the two sides of the top protection plate, the two side protection drivers are installed at the bottom of the top protection plate, and the two side protection drivers are connected with the two arc-shaped side protection plates correspondingly so as to drive the two arc-shaped side protection plates to rotate in the vertical plane; the two ends of the gap bridge plate are provided with long-strip-shaped holes extending in the vertical direction, and the long-strip-shaped holes in the two ends of the gap bridge plate are connected with the bases of the two supporting jacks through the pin shafts correspondingly, and the gap bridge plate has the beneficial effects that stable supporting can be continuously provided, unstable supporting caused by unevenness of the bottom plate is avoided, and the stability and reliability of the whole hydraulic supporting system are enhanced.

The invention discloses a special hydraulic support for underground coal mine filling coal mining, and relates to the technical field of coal mining, the special hydraulic support comprises a bottom plate, two fixing assemblies are fixedly mounted on the upper surface of the bottom plate, the two fixing assemblies are symmetrically distributed about the center line of the bottom plate, and a plurality of fixing plates are fixedly mounted on the side, close to the fixing assemblies, of the bottom plate; the multiple fixing plates are linearly distributed in the side line direction of the bottom plate, and two rotating rods are arranged between every two adjacent fixing plates. The fixing assembly is in linkage design with an adjustable lead screw transmission structure through a positioning pile, multi-assembly cooperative adjustment is achieved in combination with a synchronous belt, the static fixing mode of a traditional rigid anchoring device is broken through, the anchoring depth can be dynamically adjusted in real time according to soft and hard alternation of an underground rock stratum, fault zone distribution and mining-induced stress changes, local stress concentration is effectively dispersed, and the anchoring effect is improved. And the yield failure of the anchoring part caused by rock stratum deformation is avoided, and the anchoring stability and the anti-disturbance capacity of the support under the complex geological condition are remarkably improved.

The invention discloses a three-telescopic stand column of a hydraulic support, and relates to the technical field of hydraulic supports. The three-telescopic stand column of the hydraulic support comprises a first cylinder body, a second cylinder body, a third cylinder body, a movable column and a liquid supply assembly, the piston end of the second cylinder body is assembled in an inner cavity of the first cylinder body in a sliding mode, a first cavity and a second cavity are divided on the two axial sides of the second cylinder body, and the piston end of the third cylinder body is assembled in an inner cavity of the second cylinder body in a sliding mode; the piston end of the movable column is slidably assembled in an inner cavity of the third cylinder body, the liquid supply assembly comprises a first pipe, a second pipe and a one-way overflow valve, the first pipe is communicated with the first cavity, the second pipe is communicated with the second cavity, the input end of the one-way overflow valve is connected with the first pipe, and the output end of the one-way overflow valve is connected with the second pipe. The one-way overflow valve is used for being communicated with the second pipe when the pressure in the first pipe is larger than the first set pressure. The three-telescopic stand column of the hydraulic support has the pressure reducing and buffering effects and is good in impact resistance.

The utility model relates to the technical field of tunnel construction, in particular to double-arch tunnel excavation supporting equipment which comprises two sets of connecting supports, the bottoms of the connecting supports are connected with a plurality of sets of lifting hydraulic rods, the bottoms of the lifting hydraulic rods are connected with fixed connecting rods, and the two ends of each fixed connecting rod are connected with connecting box bodies. The adjustable butt joint structure is arranged in the double-arch tunnel excavation supporting equipment, so that the driving motor in the adjustable butt joint structure enables the two sets of tunnel supporting equipment to be in butt joint rapidly through the transmission structure, after butt joint is completed, the jacking hydraulic rod is started, the jacking hydraulic rod is driven to rotate, the jacking hydraulic rod is driven to rotate, and the jacking hydraulic rod is driven to rotate. The driving end of the jacking hydraulic rod moves outwards, then the rotating supporting plate is driven to rotate, the rotating supporting plate abuts against the side wall of the tunnel, at the moment, the double-arch tunnel partition wall is supported through the rotating supporting plate, then the pressure on the partition wall is reduced, and the stability of the tunnel is kept.

The invention discloses an inclination-angle-adjustable physical similar simulation experiment device which comprises an experiment platform base, the experiment platform base is fixedly connected with a rotating support, a frame is arranged above the rotating support, the rotating support is rotationally connected with the lower end of the frame, the experiment platform base is rotationally connected with an inclination angle adjusting oil cylinder, and the inclination angle adjusting oil cylinder is connected with an inclination angle adjusting oil cylinder. The output end of the inclination angle adjusting oil cylinder is rotationally connected with the end, away from the rotating support, of the frame. Stand columns are fixedly arranged at the two ends of the experiment platform base in the length direction and located on the two sides of the frame respectively, two baffle sets are arranged between the two stand columns and located on the two sides of the stand columns in the width direction respectively, each baffle set comprises a plurality of baffles abutting against the frame, and the two ends of each baffle are detachably connected with the two stand columns respectively. According to the application, when the simulated coal seam has an inclination angle, a rock stratum structure gliding phenomenon does not exist, vertical pressure application can be maintained, and the accuracy and reliability of experimental data of the experimental device are improved.

The hydraulic support for the coal mine comprises a mounting frame, fixing plates are symmetrically and fixedly connected to the top of the mounting frame, a fixing seat is fixedly connected between the two fixing plates, connecting seats are symmetrically and fixedly connected to the top of the fixing seat, and a two-way lead screw is rotationally connected between the two connecting seats; according to the hydraulic support for the coal mine, the supporting plate, the supporting block, the rotating shaft, the wing plates and the hydraulic cylinder are arranged, so that the function of carrying out auxiliary supporting on the top of an underground coal face is achieved, the angles of the wing plates on the two sides can be adjusted when the wing plates are used, and the application effect of the hydraulic support is enhanced; by arranging a hand wheel, a two-way screw rod, a sliding plate, a connecting rod, a knob, a threaded rod, a sliding block, limiting teeth and an outer gear ring, the function of adjusting the height when the device is supported is achieved, the position of the two-way screw rod can be locked after adjustment is completed, the two-way screw rod is prevented from rotating reversely, and the safety effect of the device is enhanced.

The invention belongs to the technical field of hydraulic equipment, and particularly relates to a paste filling formwork hydraulic support and a leakage monitoring method. The problem that leakage detection at the joint of a rubber pipe is difficult is solved, the device comprises a paste filling template hydraulic support and a hydraulic integration module installed on the paste filling template hydraulic support, and the hydraulic integration module comprises an oil way plate, cooling fins installed on the oil way plate and a plurality of water outlet pieces; according to the rubber pipe leakage monitoring device, a worker can carry out positioning maintenance on a rubber pipe which may leak, and the use safety is guaranteed.

The utility model discloses a movable platform shed formula temporary support equipment belongs to the technical field of support, and this equipment includes installation bottom plate, self -locking universal wheel, support plate, rotating plate and adjusting assembly, through setting adjusting assembly, the elongation and shortening of second telescopic cylinder, and then can make rotating plate present with the parallel state or perpendicular state of support plate, and then can make both sides rotating plate unroll or fold according to the area of support, make the application range more extensive, through setting elevating assembly, the elongation of first telescopic cylinder makes first rotating lever inside first sliding rail and second sliding rail be transverse sliding, and then make every connecting plate body of poor rotation, make support plate raise, thereby can adjust the height of support plate according to the support position, through setting fixed component, the elongation of third telescopic cylinder makes fixed plate move down and contact ground, thereby can fix this equipment in the specified position.