Mine pressure simulation device for detecting pressure of top plate

Abstract

The invention provides a mine pressure simulation device for detecting roof pressure, the mine pressure simulation device comprises a support frame, a plurality of roof support assemblies, a fence assembly, a pressurization assembly and a local stress assembly.In the scheme, different geological conditions can be simulated by filling different materials in a simulation space, the arranged roof support assemblies are used for simulating a roof support, and the local stress assembly is used for detecting the roof pressure. Pressure data can be measured through a sensor on the top plate supporting assembly so as to judge the current pressure borne by the top plate supporting assembly; moreover, the local stress concentration of an excavation area caused by an existing roadway above the excavation roadway can be simulated through the local stress assembly, the pressure of a required value can be simulated through the stress application assembly, and the influence of the local stress on the excavation area is detected through a sensor on the top plate supporting assembly. Therefore, technicians are guided to select a better supporting scheme. Therefore, according to the scheme, the problem that in the prior art, the mine pressure simulation measurement condition is single is solved, and simulation better conforms to the actual production.

Description

Technical Field

[0001] The invention relates to the technical field of mine pressure simulation, and in particular to a mine pressure simulation device for detecting roof pressure. Background Art

[0002] Before tunneling, the underground rock or coal layer is solid, and the weight of the upper rock layer presses on the lower rock layer, which is in a state of balance. At this time, the rock mass does not deform or move. After a tunnel is excavated in the coal seam or rock layer, the rock layer at the top of the tunnel has a force pressing on the tunnel. If it is not supported in time, there is a risk of fracture, damage, or even falling. This force caused by mining activities in the rock mass around the tunnel and the mining face, as well as on the support, is called mine pressure, also known as roof pressure.

[0003] In order to clearly grasp the detailed parameters of roof pressure, simulation experiments are often used in the prior art to measure data. For example, the patent with announcement number CN209670985U discloses a simulation bracket for measuring roof pressure in a similar simulation experiment of mine pressure, including a support device and a force measuring device, the support device includes a top beam and a base, a connecting part is provided between the top beam and the base, the upper and lower ends of the connecting part are respectively connected to the top beam and the base, the connecting part deforms when subjected to force and provides support force when deformed, the upper part of the top beam and the lower part of the base respectively contact the external force application point of the simulation bracket; the force measuring device is arranged inside the connecting part of the support device, including an elastic member and a dynamometer, the elastic member generates elastic deformation with the deformation of the connecting part and provides support force when deformed, and the dynamometer is in contact with the elastic member and connected to detect the force magnitude of the connecting part.

[0004] Although the above scheme can measure the pressure generated by the simulated bracket during disassembly and installation and measure some mine pressure parameters, it cannot simulate more complex situations, such as local stress increase, etc. These complex situations also need to be simulated and measured. Summary of the invention

[0005] The invention provides a mine pressure simulation device for detecting roof pressure, so as to solve the problem of single situation of mine pressure simulation measurement in the prior art.

[0006] In order to solve the above problems, the present invention provides a mining pressure simulation device for detecting roof pressure, comprising a support frame, a plurality of roof support components, a barrier component, a pressurizing component and a local stress component, wherein:

[0007] The support frame includes a base and a plurality of spaced columns, wherein the plurality of columns are fixed on the base;

[0008] The top plate support assembly includes two support vertical rods and a top support fixed on the tops of the two support vertical rods, the bottoms of the two support vertical rods are provided with support feet, the support feet of the two support vertical rods are respectively provided on the base, the bottoms of the support feet are provided with a first sensor, and the top of the top support is provided with a second sensor;

[0009] The enclosure assembly includes a plurality of rectangular frames, the rectangular frames are arranged in a space surrounded by a plurality of the uprights, and the plurality of rectangular frames are stacked to enclose a simulation space for accommodating simulation materials;

[0010] The pressurizing component is used to apply pressure to the rectangular frame;

[0011] The local stress component includes a pressure rod, which runs through the simulation space. Removable connecting pieces are respectively provided at both ends of the pressure rod. The pressure rod is connected to a force-applying component through the connecting pieces. The force-applying component is arranged at the lower part of the connecting piece.

[0012] Furthermore, a plurality of through holes are provided on both sides of the rectangular frame, each of the through holes is provided with a detachable cover plate, and the pressure rod passes through the simulation space through any one of the through holes.

[0013] Furthermore, a stopper is connected to the lower end of the connecting piece, and the force-applying assembly includes a plurality of counterweight blocks, a hanging through hole is provided at the center of the counterweight block, and an open gap is provided radially extending outward from the hanging through hole, and the counterweight block is inserted into the connecting piece through the open gap and fixed to the stopper.

[0014] Furthermore, the pressurizing component includes a gantry located directly above the simulation space, and a pressurizing cylinder is arranged on the gantry, and an action head of the pressurizing cylinder faces the rectangular frame.

[0015] Furthermore, two parallel tracks are provided on the base, and the supporting feet of the two supporting vertical rods are respectively slidably provided on the two tracks to adjust the distance between adjacent top plate supporting assemblies by sliding, and locking pieces are provided on the supporting feet to release the supporting feet or lock the position of the supporting feet.

[0016] Furthermore, the base is provided with an operation opening between the two rails, the operation opening extends along the length direction of the rails, a blocking plate is slidably provided at the operation opening, and the blocking plate is used to block at least a part of the operation opening.

[0017] Furthermore, the mine pressure simulation device for detecting roof pressure also includes an operating arm, which is connected to the bottom of the base. A hydraulic pusher is provided on the operating arm, and the hydraulic pusher is used to perform support operations on the simulated material in the simulation space.

[0018] Furthermore, a sliding rod is provided at the bottom of the base, the length direction of the sliding rod is parallel to the length direction of the operating opening, and both ends of the sliding rod are respectively connected to support seats so that it can be installed on the base through the support seats. The operating arm is slidably provided on the sliding rod, and the operating arm can move back and forth along the length direction of the sliding rod.

[0019] Furthermore, the operating arm includes a slider, an upper arm, a lower arm and a hydraulic pusher, the first end of the upper arm is rotatably connected to the slider, the slider is slidably matched with the slide rod, the first end of the lower arm is rotatably connected to the second end of the upper arm, and the hydraulic pusher is rotatably arranged at the second end of the lower arm, and the hydraulic pusher is adjusted to different positions through the movement of the upper arm and the lower arm.

[0020] Furthermore, the base is provided with height-adjustable lifting feet around it to adjust the height of the base; and the outside of the top plate supporting assembly is covered with a protective net.

[0021] By applying the technical solution of the present invention, different geological conditions can be simulated by filling different materials in the simulation space. The roof support assembly is used to simulate the roof support. The pressure data can be measured by the sensor on the roof support assembly to determine the pressure currently applied to the roof support assembly. In addition, the local stress concentration caused by the existing tunnel above the excavation tunnel to the excavation area can be simulated by the local stress assembly. The pressure with the required value can be simulated by the force assembly. The influence of the local stress on the excavation area can be detected by the sensor on the roof support assembly, thereby guiding the technicians to select a better support scheme. Therefore, the scheme avoids the problem of single situation of the mine pressure simulation measurement in the prior art, making the simulation more in line with the actual production. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 It is a front view of the first embodiment of the present invention;

[0024] Figure 2 It is a side view of the first embodiment of the present invention;

[0025] Figure 3is a cross-sectional view of the first embodiment of the present invention;

[0026] Figure 4 It is a cross-sectional view of the second embodiment of the present invention.

[0027] The above drawings include the following reference numerals:

[0028] 10. Simulation material; 11. Tunnel; 12. Anchor bolt;

[0029] 100, base; 101, track; 102, operation opening; 110, column; 120, lifting foot;

[0030] 200, rectangular frame; 210, through hole; 211, cover plate;

[0031] 300, gantry; 310, pressurized cylinder;

[0032] 400, supporting vertical rod; 410, top support; 420, supporting foot;

[0033] 500, pressure rod; 510, connecting piece; 520, counterweight;

[0034] 600, slide bar; 601, support seat;

[0035] 700, slider; 710, upper arm; 720, lower arm; 730, hydraulic pusher. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] like Figures 1 to 3 As shown, the first embodiment of the present invention provides a mining pressure simulation device for detecting roof pressure, including a support frame, a plurality of roof support components, a baffle component, a pressurizing component and a local stress component, wherein:

[0038] The support frame includes a base 100 and a plurality of spaced apart columns 110 , wherein the plurality of columns 110 are fixed on the base 100 ;

[0039] The top plate support assembly includes two support vertical rods 400 and a top support 410 fixed on the top of the two support vertical rods 400, support feet 420 are arranged at the bottom of the two support vertical rods 400, and the support feet 420 of the two support vertical rods 400 are respectively arranged on the base 100, a first sensor is arranged at the bottom of the support feet 420, and a second sensor is arranged at the top of the top support 410;

[0040] The enclosure assembly includes a plurality of rectangular frames 200, which are disposed in a space surrounded by a plurality of columns 110, and the plurality of rectangular frames 200 are stacked to enclose a simulation space for accommodating the simulation material 10;

[0041] The pressurizing component is used to apply pressure to the rectangular frame 200;

[0042] The local stress component includes a pressure rod 500 , which runs through the simulation space. Both ends of the pressure rod 500 are respectively provided with detachable connecting pieces 510 . The pressure rod 500 is connected to the force-applying component through the connecting piece 510 , and the force-applying component is arranged at the lower part of the connecting piece 510 .

[0043] By applying the technical solution of the present invention, different geological conditions can be simulated by filling different simulation materials 10 in the simulation space. The roof support assembly is used to simulate the roof support. The pressure data can be measured by the sensor on the roof support assembly to determine the pressure currently applied to the roof support assembly. In addition, the local stress concentration caused by the existing tunnel above the excavated tunnel 11 on the excavated area can be simulated by the local stress assembly. The pressure with the required value can be simulated by the force assembly. The influence of the local stress on the excavated area can be detected by the sensor on the roof support assembly, thereby guiding the technicians to select a better support scheme. Therefore, the scheme avoids the problem of single situation of the mine pressure simulation measurement in the prior art, making the simulation more in line with the actual production.

[0044] There are multiple through holes 210 on both sides of the rectangular frame 200, each of which is provided with a detachable cover plate 211, and the pressure rod 500 passes through the simulation space through any through hole 210. This facilitates the installation of the pressure rod 500 and the application of pressure to the rectangular frame 200.

[0045] Specifically, a stopper is connected to the lower end of the connecting member 510, and the force-applying assembly includes a plurality of counterweights 520. A hanging through hole is provided at the center of the counterweight 520, and an open notch is provided radially extending outward from the hanging through hole. The counterweight 520 is inserted into the connecting member 510 and fixed to the stopper through the open notch. In this way, the counterweight 520 can be easily disassembled to adjust the size of the counterweight.

[0046] In this solution, the pressurizing assembly includes a gantry 300 located directly above the simulation space, and a pressurizing cylinder 310 is arranged on the gantry 300, and the action head of the pressurizing cylinder 310 faces the enclosure assembly. The pressurizing cylinder 310 is a hydraulic cylinder that applies pressure to the rectangular frame 200.

[0047] like Figure 1 As shown, two parallel tracks 101 are provided on the base 100, and the supporting feet 420 of the two supporting vertical rods 400 are respectively slidably provided on the two tracks 101 to adjust the distance between adjacent top plate supporting components by sliding, and locking parts are provided on the supporting feet 420 to loosen the supporting feet 420 or lock the position of the supporting feet 420.

[0048] The track 101 is provided so that the spacing of the top plate support assembly can be easily adjusted. When adjusting to different spacings, different pressure data can be obtained to simulate the effects of different installation methods on the top plate support assembly, thereby determining a better spacing value.

[0049] In this solution, the base 100 is provided with an operation opening 102 between the two rails 101, the operation opening 102 extends along the length direction of the rail 101, and a blocking plate is slidably provided at the operation opening 102, and the blocking plate is used to block at least a part of the operation opening 102. The operation opening 102 can be used for operations such as observation and advanced support.

[0050] like Figure 4 As shown, in Example 2, based on Example 1, the mine pressure simulation device for detecting roof pressure also includes an operating arm, which is connected to the bottom of the base 100. The operating arm is provided with a hydraulic pusher 730, which is used to support the simulated material 10 in the simulation space.

[0051] The bottom of the base 100 is provided with a slide bar 600, the length direction of the slide bar 600 is parallel to the length direction of the operation opening 102, and the two ends of the slide bar 600 are respectively connected to support seats 601, so that the slide bar 600 is installed on the base 100 through the support seats 601. The operating arm is slidably arranged on the slide bar 600, and the operating arm can reciprocate along the length direction of the slide bar 600. In this way, the position of the operating arm can be adjusted as needed.

[0052] Specifically, the operating arm includes a slider 700, an upper arm 710, a lower arm 720 and a hydraulic pusher 730. The first end of the upper arm 710 is rotatably connected to the slider 700, the slider 700 is slidably matched with the slide rod 600, the first end of the lower arm 720 is rotatably connected to the second end of the upper arm 710, and the hydraulic pusher 730 is rotatably arranged at the second end of the lower arm 720. The hydraulic pusher 730 is adjusted to different positions through the movement of the upper arm 710 and the lower arm 720, so as to perform support and other operations.

[0053] Among them, adjustable height lifting feet 120 are arranged around the base 100 to adjust the height of the base 100; the outside of the top plate support assembly is covered with a protective net.

[0054] In order to understand this solution more clearly, further explanation is given below.

[0055] like Figures 1 to 3 As shown, this embodiment provides a mining pressure simulation device for detecting roof pressure, including a support frame, a roof support assembly, an enclosure assembly and a pressurizing assembly. The support frame includes a base 100 and four rectangularly distributed columns 110, the four columns 110 are fixed on the base 100, and two parallel tracks 101 are arranged on the base 100. The roof support assembly includes two support vertical rods 400 and a top support 410 fixed on the top of the two support vertical rods 400. Support feet 420 are arranged at the bottom of the two support vertical rods 400, and the support feet 420 of the two support vertical rods 400 are respectively slidably arranged on the two tracks 101, and locking pieces are arranged on the support feet 420. A first sensor is arranged at the bottom of the support feet 420, and a second sensor is arranged at the top of the top support 410; the enclosure assembly is a rectangular frame 200, the rectangular frame 200 is embedded between the four columns 110, and a plurality of rectangular frames 200 are stacked to enclose a simulation space for accommodating the simulation material 10. The pressurizing assembly includes a gantry 300 located directly above the simulation space. A pressurizing cylinder 310 is disposed on the gantry 300 , and the action head of the pressurizing cylinder 310 faces the simulation space.

[0056] During the test, different geological conditions can be simulated by filling the simulated space with different materials. The roof support assembly is used to simulate the roof support. The pressure data can be measured by the sensor on the roof support assembly to determine the pressure currently applied to the roof support assembly. The track 101 is set so that the spacing of the roof support assembly can be easily adjusted. When adjusting to different spacings, different pressure data can be obtained to simulate the effects of different installation methods on the roof support assembly, thereby determining the optimal spacing value.

[0057] Furthermore, the device also includes a local stress component, which includes a pressure rod 500, which runs through the front and rear surfaces of the simulation space, and a connector 510 is provided at both ends of the pressure rod 500. The pressure rod 500 is connected to the force component through the connector 510, and the force component is provided at the lower end of the connector 510. The local stress component can simulate the local stress concentration caused by the existing tunnel above the excavation tunnel 11 on the excavation area. The force component can simulate pressures of different values. Specifically, the force component is a counterweight 520. By increasing and decreasing the number of counterweights 520, it is simulated to increase pressure at the position of the existing tunnel, so that the influence of the local stress on the excavation area can be detected by the sensor of the roof support component, so as to guide technicians to select a better support scheme.

[0058] The connecting member 510 may be a metal rod, and the metal rods are connected to both sides of the pressure rod 500 to maintain balance. The upper end of the metal rod is provided with a threaded section, and the two ends of the pressure rod 500 are provided with threaded holes for assembling the metal rod. Before the pressure rod 500 is penetrated, the metal rod at the first end of the pressure rod 500 is first removed from the pressure rod 500, and the first end of the pressure rod 500 is passed through the simulation space. After the first end of the pressure rod 500 is passed out of the simulation space, the removed metal rod is reinstalled. At this time, both ends of the pressure rod 500 have metal rods.

[0059] In order to quickly install and remove the counterweight 520, a stopper is provided at the bottom end of the metal rod body, a hanging through hole is provided at the center of the counterweight 520, and an open notch is provided radially outwardly from the hanging through hole, and the counterweight 520 is clamped on the metal rod body through the open notch and fixed to the stopper. When disassembling, the counterweight 520 is horizontally moved outward along the open notch to be removed from the metal rod body. When in use, it is necessary to ensure that the counterweights at both ends of the pressure rod 500 are consistent, so that the pressure rod 500 can maintain balance and the local stress component can be evenly pressed vertically downward.

[0060] When simulating local stress, due to the different positional relationships between different historical lanes and the area to be excavated, in order to ensure that these positional relationships can be correctly simulated, multiple holes 210 are set on both sides of the rectangular frame 200, and a detachable cover plate 211 is set on the hole 210, and the pressure rod 500 passes through the simulation space through the hole 210. When simulating local stress, the cover plate 211 at the corresponding position is opened, and the pressure rod 500 is passed through, and the cover plates 211 at other positions remain closed to avoid leakage of materials in the simulation space. In order to firmly install the cover plate 211, threaded columns are set around the outer wall of the rectangular frame 200 corresponding to the hole 210, and fixing holes are set around the cover plate 211. After the cover plate 211 is attached to the hole 210, it can be fixed to the threaded column by screws. In order to increase the installation effect, a buffer layer is set on the inner side of the cover plate 211. When in use, the corresponding cover plate 211 can be opened.

[0061] Furthermore, the base 100 is provided with an operation opening 102 between the two tracks 101, the operation opening 102 extends along the length direction of the track 101, and a blocking plate is slidably provided on the operation opening 102. The operation opening 102 passes through the base 100 in the vertical direction, and the excavation area can be operated directly below the base 100 to simulate some support operations in the excavation of the tunnel 11, including the connection between the anchor rod 12 and the anchor cable, and the advance support through the anchor rod 12, and the effect of the advance support on the empty top area in the head can be simulated to ensure the effectiveness of the advance support.

[0062] Furthermore, height-adjustable lifting feet 120 are arranged around the base 100. The height of the base 100 can be raised by the lifting feet 120. On the one hand, it is convenient to observe the situation in the operation opening 102, that is, the situation of the excavated tunnel 11 can be directly seen; on the other hand, the excavated tunnel 11 can be directly supported through the operation opening 102. When the heights of the four lifting feet 120 are raised or lowered synchronously, the entire base 100 can be raised and lowered horizontally. When the heights of the lifting feet 120 on different sides are inconsistent, the base 100 can be tilted to simulate the situation of the inclined tunnel 11.

[0063] Furthermore, the exterior of the roof support assembly is also covered with a protective net, which can simulate a grid for supporting the roof.

[0064] like Figure 4The main structure of the second embodiment is the same as that of the first embodiment, and an external force component is provided on the basis of the first embodiment. Specifically, in order to simulate the operation of inserting the anchor rod 12 in the advance support, it is necessary to introduce an external force, and the size of the operation opening 102 is small. In order to facilitate the operation, an operating arm is also provided on the base 100, and the operating arm is slidably connected to the bottom of the base 100, and a hydraulic pusher 730 is provided on the operating arm.

[0065] In order to facilitate the movement of the operating arm so as to operate at different positions, a slide bar 600 is also provided at the bottom of the base 100. The length direction of the slide bar 600 is parallel to the length direction of the operating opening 102. A gap is left between the two ends of the slide bar 600 and the base 100. The two ends of the slide bar 600 are connected with a support seat 601. The operating arm is slidably arranged on the slide bar 600, and the operating arm can reciprocate along the length direction of the slide bar 600. The operating arm preferably includes a large arm 710 and a small arm 720. The first end of the large arm 710 is rotatably connected to the slider 700. The slider 700 and the slide bar 600 are slidably matched, and the sliding slider 700 can drive the operating arm to move. The first end of the small arm 720 is rotatably connected to the second end of the large arm 710. The hydraulic pusher 730 is rotatably arranged at the second end of the small arm 720. The hydraulic pusher 730 can be adjusted to different angles by rotating the large arm 710 and the small arm 720.

[0066] The hydraulic pusher 730 may be a hydraulic cylinder, through which the anchor rod 12 can be pressed into the simulation material 10. Before the anchor rod 12 is pressed in, the top plate support assembly of the tunneling tunnel corresponding to the slide rail near the head area is moved in a direction away from the head area, so that the part of the tunneling tunnel near the head area forms an empty top area. At this time, the anchor rod 12 is reinforced by the operating arm, so that it can be known whether the advanced support direction adopted in the complex stratum excavation is reliable.

[0067] The above scheme can simulate different geological conditions by filling different materials in the simulation space. The roof support assembly is used to simulate the roof support. The pressure data can be measured by the sensor on the roof support assembly to determine the current pressure on the roof support assembly. The set track makes it easy to adjust the spacing of the roof support assembly. When adjusting to different spacings, different pressure data can be obtained to simulate the impact of different installation methods on the roof support assembly, and then determine the optimal spacing value.

[0068] The above is only an optional embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0069] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0070] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of this solution. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being only exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0071] In the description of this scheme, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing this scheme and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the scope of protection of this scheme; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0072] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0073] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this scheme.

Claims

1. A mine pressure simulation device for detecting roof pressure, characterized in that: It includes a support frame, a plurality of top plate support components, a containment component, a pressurizing component and a local stress component, wherein: The support frame comprises a base (100) and a plurality of spaced-apart columns (110), wherein the plurality of columns (110) are fixed on the base (100); The top plate support assembly comprises two support vertical rods (400) and a top support (410) fixed on the tops of the two support vertical rods (400), support feet (420) are arranged at the bottoms of the two support vertical rods (400), the support feet (420) of the two support vertical rods (400) are respectively arranged on the base (100), a first sensor is arranged at the bottom of the support feet (420), and a second sensor is arranged at the top of the top support (410); The enclosure assembly comprises a plurality of rectangular frames (200), wherein the rectangular frames (200) are arranged in a space surrounded by a plurality of the upright posts (110), and the plurality of rectangular frames (200) are stacked to enclose a simulation space for accommodating the simulation material (10); The pressurizing component is used to apply pressure to the rectangular frame (200); The local stress component comprises a pressure rod (500), the pressure rod (500) runs through the simulation space, and detachable connecting pieces (510) are respectively provided at both ends of the pressure rod (500). The pressure rod (500) is connected to a force-applying component via the connecting pieces (510), and the force-applying component is provided at the bottom of the connecting pieces (510).

2. The mine pressure simulation device for detecting roof pressure according to claim 1, characterized in that: A plurality of through holes (210) are arranged on both sides of the rectangular frame (200), each of the through holes (210) is provided with a detachable cover plate (211), and the pressure rod (500) passes through the simulation space through any one of the through holes (210).

3. The mine pressure simulation device for detecting roof pressure according to claim 1, characterized in that: The lower end of the connecting member (510) is connected to a stopper, and the force-applying assembly comprises a plurality of counterweight blocks (520). A hanging through hole is provided at the center of the counterweight block (520), and an open notch is provided radially extending outward from the hanging through hole. The counterweight block (520) is inserted into the connecting member (510) through the open notch and fixed to the stopper.

4. The mine pressure simulation device for detecting roof pressure according to claim 1, characterized in that: The pressurizing component comprises a gantry (300) located directly above the simulation space, a pressurizing cylinder (310) is arranged on the gantry (300), and an action head of the pressurizing cylinder (310) faces the rectangular frame (200).

5. The mine pressure simulation device for detecting roof pressure according to claim 1, characterized in that: Two parallel tracks (101) are arranged on the base (100), and the supporting feet (420) of the two supporting vertical rods (400) are respectively slidably arranged on the two tracks (101) so as to adjust the distance between adjacent top plate supporting assemblies by sliding, and the supporting feet (420) are provided with locking pieces so as to release the supporting feet (420) or lock the position of the supporting feet (420).

6. The mine pressure simulation device for detecting roof pressure according to claim 5, characterized in that: The base (100) is provided with an operating opening (102) between the two rails (101), the operating opening (102) extending along the length direction of the rails (101), and a blocking plate is slidably provided at the operating opening (102), the blocking plate being used to block at least a portion of the operating opening (102).

7. The mine pressure simulation device for detecting roof pressure according to claim 6, characterized in that: The mining pressure simulation device for detecting roof pressure also includes an operating arm, the operating arm is connected to the bottom of the base (100), and a hydraulic pusher (730) is provided on the operating arm. The hydraulic pusher (730) is used to perform a support operation on the simulation material (10) in the simulation space.

8. The mine pressure simulation device for detecting roof pressure according to claim 7, characterized in that: A sliding rod (600) is provided at the bottom of the base (100), and the length direction of the sliding rod (600) is parallel to the length direction of the operating opening (102). The two ends of the sliding rod (600) are respectively connected to support seats (601) so that the sliding rod (600) can be installed on the base (100) through the support seats (601). The operating arm is slidably arranged on the sliding rod (600), and the operating arm can move back and forth along the length direction of the sliding rod (600).

9. The mine pressure simulation device for detecting roof pressure according to claim 8, characterized in that: The operating arm includes a slider (700), an upper arm (710), a lower arm (720) and a hydraulic pusher (730). The first end of the upper arm (710) is rotatably connected to the slider (700). The slider (700) is slidably matched with the slide bar (600). The first end of the lower arm (720) is rotatably connected to the second end of the upper arm (710). The hydraulic pusher (730) is rotatably arranged at the second end of the lower arm (720). The hydraulic pusher (730) is adjusted to different positions through the movement of the upper arm (710) and the lower arm (720).

10. The mine pressure simulation device for detecting roof pressure according to claim 1, characterized in that: The base (100) is provided with height-adjustable lifting feet (120) around its periphery to adjust the height of the base (100); and the outside of the top plate support assembly is covered with a protective net.

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