Bag type filling mining simulation test device

Abstract

The utility model discloses a simulation test device for bag type filling mining. The simulation test device comprises a base, an angle adjusting mechanism, a model box, a loading mechanism and a bag assembly, the base comprises a first supporting section and a second supporting section which are integrally connected, and a step is formed at the joint of the first supporting section and the second supporting section; the angle adjusting mechanism comprises a rotary fixing assembly arranged on the upper surface of the first supporting section, an angle adjusting plate is movably connected to the rotary fixing assembly, the bottom face, away from one end of the rotary fixing assembly, of the angle adjusting plate is connected with an angle adjusting assembly arranged on the upper surface of the second supporting section, and the angle adjusting plate can be driven by the angle adjusting assembly to rotate relative to the base. The included angle between the angle adjusting plate and the base is adjusted; the model box is arranged on the angle adjusting plate, and the top of the model box is open; the loading mechanism is arranged above the model box, and the loading mechanism is used for applying a vertical load to a sample arranged in the model box; the bag assembly is used for filling a mined-out space in the sample.

Description

Technical Field

[0001] This utility model belongs to the field of underground mining technology and relates to experimental devices, specifically a bag-type filling mining simulation experimental device. Background Technology

[0002] Coal seam mining leads to problems such as damage to the overlying strata in the goaf, surface subsidence, ground collapse, and destruction of groundwater resources. Bag-type paste filling mining is a coal resource development method that can solve these problems. Physical simulation experiments are an effective method for engineering simulation research. Existing experimental devices for simulating paste filling mining use fixed structures and lack variable-angle structures, failing to meet the simulation requirements of various complex conditions, including near-horizontal coal seams, gently dipping coal seams, and inclined coal seams. Furthermore, current filling mining simulation experimental devices mostly place filling bodies made of similar materials into the goaf to simulate changes in the overlying strata after filling, lacking the function of simulating the bag-type grouting filling process. Therefore, it is necessary to develop a three-dimensional simulation experimental device with adjustable angles capable of simulating the bag-type paste grouting filling process to support the research on the mining mechanism and design of bag-type paste filling. Utility Model Content

[0003] In view of the defects and deficiencies in the existing technology, this utility model provides a bag-type filling mining simulation test device to solve the technical problem of the lack of simulation devices for studying bag-type filling mining process in the existing technology, and to provide a basis for the research of bag-type paste filling mining.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A bag-type filling mining simulation test device includes a base, an angle adjustment mechanism, a model box, a loading mechanism, and a bag assembly;

[0006] The base includes a first support section and a second support section that are integrally connected, and a step is formed at the connection between the first support section and the second support section.

[0007] The angle adjustment mechanism includes a rotating fixing component disposed on the upper surface of the first support section, an angle adjustment plate movably connected to the rotating fixing component, the bottom surface of the angle adjustment plate away from the rotating fixing component being connected to the angle adjustment component disposed on the upper surface of the second support section, and the angle adjustment plate being able to rotate relative to the base under the drive of the angle adjustment component, thereby realizing the adjustment of the included angle between the angle adjustment plate and the base;

[0008] The model box is mounted on the angle adjustment plate, and the top of the model box is open;

[0009] The loading mechanism is located above the model box and is used to apply a vertical load to the sample placed inside the model box.

[0010] The bag assembly is used to fill the sampling space inside the sample.

[0011] This utility model also has the following technical features:

[0012] Specifically, the rotating fixing assembly includes a first rotating rod fixing block and a second rotating rod fixing block disposed opposite to each other on both sides of the adjusting plate, and a rotating rod passing through the first rotating rod fixing block and the second rotating rod fixing block; the adjusting plate is rotatably connected to the rotating rod.

[0013] Furthermore, the number of the angle adjustment components is two, and the two angle adjustment components are arranged in a mirror symmetrical manner. The angle adjustment component includes an angle adjustment fixing base disposed on the upper surface of the second support section, and a screw rod passing through the angle adjustment fixing base along the width direction of the angle adjustment plate. One end of the screw rod is connected to an angle adjustment turntable, and the other end of the screw rod is movably connected to an angle adjustment top rod. The end of the angle adjustment top rod away from the screw rod is hinged to a fixing member disposed on the bottom surface of the angle adjustment plate.

[0014] The screw can move along the width of the angle adjustment plate, push the angle adjustment top rod, and thus drive the angle adjustment plate to rotate around the screw.

[0015] Furthermore, the angle-adjusting fixing base has a through threaded hole, and the outer wall of the screw has an external thread that matches the threaded hole.

[0016] Furthermore, the loading mechanism includes a hydraulic loader, a loading rod, and a loading top cover. The power output end of the hydraulic loader is coaxially connected to the loading rod, and the loading rod is connected to the loading top cover.

[0017] Furthermore, a hook is provided at the bottom end of the loading rod, and a lifting ring for connecting to the hook is provided on the top surface of the loading cover.

[0018] Furthermore, the upper surface of the first support section is provided with a frame for fixing the hydraulic loader.

[0019] Furthermore, the model box is formed by a bottom plate, a front plate, a rear plate, a first side plate, and a second side plate. The bottom plate, the front plate, and the rear plate are integrally connected. The two ends of the first side plate and the two ends of the second side plate can be inserted and fitted with the front plate and the rear plate, respectively. A mining filling groove is formed through the first side plate.

[0020] In other embodiments, a model box made of a single piece of transparent tempered glass can also be used directly.

[0021] Furthermore, both the first and second side panels are made of transparent tempered glass, while the bottom plate, front plate, and rear plate are all made of steel.

[0022] Furthermore, the sac assembly includes an elastic grouting sac and a grouting pipe with one end connected to the elastic grouting sac.

[0023] Compared with the prior art, the beneficial technical effects of this utility model are:

[0024] This invention simulates the bag-type grout filling scenario through structural design, enabling the placement of elastic grouting bags and the filling of grout, as well as the observation of deformation of the coal seam roof and floor strata during the filling process. Using this invention ensures that the bag-type filling mining simulation test process is intuitive and clear. The structural design of the angle adjustment mechanism enables the setting of the tilt angle of the model box, realizing the simulation test of bag-type filling mining of coal seams at different angles. This invention has a simple structure, is easy to use, and has strong promotional value. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a side view of the present invention;

[0027] Figure 3 This is a partial structural schematic diagram of the present invention;

[0028] Figure 4 This is a schematic diagram of the first side panel structure;

[0029] Figure 5 This is a schematic diagram of the bag assembly structure.

[0030] The labels in the diagram represent:

[0031] 1-Base, 2-Angle adjustment mechanism, 3-Model box, 4-Loading mechanism, 5-Bag assembly, 6-Frame;

[0032] 11 - First support segment; 12 - Second support segment;

[0033] 21-Rotating fixing component; 22-Adjusting plate; 23-Adjusting component;

[0034] 31-Bottom plate, 32-Front plate, 33-Rear plate, 34-First side plate, 35-Second side plate;

[0035] 41-Hydraulic loader, 42-Loading rod, 43-Loading top cover, 44-Hook, 45-Lifting ring;

[0036] 51-Elastic grouting bag; 52-Grouting pipe;

[0037] 211-First rotating rod fixing block, 212-Second rotating rod fixing block, 213-Rotor;

[0038] 231-Angle adjusting base; 232-Screw; 233-Angle adjusting turntable; 234-Angle adjusting top rod; 235-Fixing component;

[0039] 341 - Mining filling tank.

[0040] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Detailed Implementation

[0041] Following the above technical solution, specific embodiments of this utility model are given below. It should be noted that this utility model is not limited to the following specific embodiments, and all equivalent modifications made based on the technical solution of this application fall within the protection scope of this utility model. The utility model will be further described in detail below with reference to the embodiments.

[0042] In the description of the orientation of this utility model, the terms "up", "down", "front", "back", "left", "right", etc., indicate the orientation or positional relationship only for the convenience of describing this utility model and simplifying the description, and 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 should not be construed as limitations on this utility model.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Unless otherwise stated, the terms "installed," "connected," "joined," and "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or a connection within two components or an interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] It should be noted that, unless otherwise specified, all components in this utility model are components known in the art.

[0045] Example 1

[0046] Following the above technical solutions, such as Figures 1 to 5As shown, this embodiment provides a bag-type filling mining simulation test device, including a base 1, an angle adjustment mechanism 2, a model box 3, a loading mechanism 4, and a bag assembly 5;

[0047] The base 1 includes a first support section 11 and a second support section 12 that are integrally connected, and a step is formed at the connection between the first support section 11 and the second support section 12;

[0048] The angle adjustment mechanism 2 includes a rotating fixing component 21 disposed on the upper surface of the first support section 11, an angle adjustment plate 22 movably connected to the rotating fixing component 21, and the bottom surface of the end of the angle adjustment plate 22 away from the rotating fixing component 21 connected to the angle adjustment component 23 disposed on the upper surface of the second support section 12. The angle adjustment plate 22 can rotate relative to the base 1 under the drive of the angle adjustment component 23, thereby realizing the adjustment of the included angle between the angle adjustment plate 22 and the base 1.

[0049] The model box 3 is mounted on the angle adjustment plate 22, and the top of the model box 3 is open;

[0050] The loading mechanism 4 is located above the model box 3. The loading mechanism 4 is used to apply a vertical load to the sample placed inside the model box 3.

[0051] The bag assembly 5 is used to fill the empty space inside the sample.

[0052] As a preferred embodiment, the rotating fixing assembly 21 includes a first rotating rod fixing block 211 and a second rotating rod fixing block 212 disposed opposite to each other on both sides of the adjusting plate 22, and a rotating rod 213 passing through the first rotating rod fixing block 211 and the second rotating rod fixing block 212; the adjusting plate 22 is rotatably connected to the rotating rod 213.

[0053] Specifically, the adjusting plate 22 has a through hole, and the rotating rod 213 passes through the through hole and its two ends are connected to the first rotating rod fixing block 211 and the second rotating rod fixing block 212 respectively.

[0054] As a preferred embodiment, there are two angle adjustment components 23, and the two angle adjustment components 23 are arranged in a mirror symmetrical manner. The angle adjustment component 23 includes an angle adjustment fixing base 231 disposed on the upper surface of the second support section 12, and a screw 232 passing through the angle adjustment fixing base 231 along the width direction of the angle adjustment plate 22. One end of the screw 232 is connected to the angle adjustment turntable 233, and the other end of the screw 232 is movably connected to the angle adjustment top rod 234. The end of the angle adjustment top rod 234 away from the screw 232 is hinged to the fixing member 235 disposed on the bottom surface of the angle adjustment plate 22.

[0055] Rotating the angle adjustment turntable 233 allows the screw 232 to move along the width direction (i.e., the horizontal direction) of the angle adjustment plate 22 via a threaded connection, pushing the angle adjustment rod 234. The angle adjustment rod 234 then pushes the angle adjustment plate 22, causing it to rotate around the rotating rod 213, thereby changing the angle between the angle adjustment plate 22 and the base 1.

[0056] In other embodiments, a small jack can be fixed on the base 1 instead of the angle adjustment assembly 23, and the angle between the angle adjustment plate 22 and the base 1 can be changed by raising and lowering the jack.

[0057] As a preferred embodiment, the angle-adjusting fixing base 231 has a through threaded hole, and the outer wall of the screw 232 is provided with an external thread that matches the threaded hole.

[0058] In a preferred embodiment, the loading mechanism 4 includes a hydraulic loader 41, a loading rod 42, and a loading top cover 43. The power output end of the hydraulic loader 41 is coaxially connected to the loading rod 42, and the loading rod 42 is connected to the loading top cover 43. The outer contour of the loading top cover 43 matches the inner contour of the model box 3. Activating the hydraulic loader 41 can apply a vertical load to the loading top cover 43, thereby applying a vertical load to the sample placed inside the model box 3.

[0059] As a preferred embodiment, a hook 44 is provided at the bottom end of the loading rod 42, and a lifting ring 45 for connecting to the hook 44 is provided on the top surface of the loading top cover 43. Other connection methods can also be used, as long as they can achieve the connection and force transmission between the hydraulic loader 41 and the loading top cover 43.

[0060] As a preferred embodiment, the upper surface of the first support section 11 is provided with a frame 6 for fixing the hydraulic loader 41. In this embodiment, the frame 6 includes four vertical columns arranged on the upper surface of the first support section 11, and a mounting plate mounted on the top of the four columns. The mounting plate has a mounting hole in the middle, and the hydraulic loader 41 is fixedly installed in the mounting hole.

[0061] In a preferred embodiment, the model box 3 is formed by a base plate 31, a front plate 32, a rear plate 33, a first side plate 34, and a second side plate 35. The base plate 31, the front plate 32, and the rear plate 33 are integrally connected. The two ends of the first side plate 34 and the two ends of the second side plate 35 can be inserted and fitted with the front plate 32 and the rear plate 33, respectively. A mining filling groove 341 is formed through the first side plate 34. The mining filling groove 341 can be used to simulate coal seam mining and to fill the grouting of the bag assembly 5 placed in the sample.

[0062] Specifically, the front panel 32 has a first and a second slot vertically formed along its upper edge, and the rear panel 33 has a third and a fourth slot vertically formed along its upper edge. The first and third slots are mirror-symmetrically arranged; the second and fourth slots are also mirror-symmetrically arranged. The first side panel 34 and the second side panel 35 can be inserted into the first and third slots respectively at both ends, and the second side panel 35 can be inserted into the second and fourth slots respectively at both ends. Furthermore, the first side panel 34 and the second side panel 35 are connected by multiple parallel reinforcing ribs. These reinforcing ribs provide reinforcement.

[0063] In a preferred embodiment, both the first side plate 34 and the second side plate 35 are transparent tempered glass plates, allowing observation of changes inside the model box 3 through the first side plate 34 and the second side plate 35. The bottom plate 31, the front plate 32, and the rear plate 33 are all steel plates.

[0064] As a preferred embodiment, the sac assembly 5 includes an elastic grouting sac 51 and a grouting pipe 52 with one end connected to the elastic grouting sac 51. Grout can be filled into the elastic grouting sac 51 by means of the grouting pipe 52.

[0065] When using this utility model:

[0066] Step 1: Determine the relevant parameters for the simulation test based on the geological data and mining engineering data collected in the early stage, including the simulated coal seam angle, coal seam thickness, self-weight of the overlying strata, coal seam excavation step distance, and paste filling parameters, etc.

[0067] Step 2: Complete the assembly of the simulation test device (including model box 3), rotate the angle adjustment turntable 233 so that the screw 232 moves along the width direction of the angle adjustment plate 22, push the angle adjustment rod 234, and the angle adjustment rod 234 pushes the angle adjustment plate 22 to raise the angle adjustment plate 22 to form the required angle with the base 1.

[0068] Step 3: Prepare the sample in model box 3 according to the determined relevant parameters. After preparation, place the loading top cover 43 on top of model box 3.

[0069] Step 4: After the test model is made, place the loading top cover 43 in the model box and make it contact the upper surface of the sample; the loading top cover 43 is connected to the loading rod 72 by means of the connection between the lifting ring 45 and the hook 44.

[0070] Step 5: Start the hydraulic loader 41, apply a vertical load to reach the self-weight of the overlying rock strata of the coal seam determined in Step 1, and then maintain the load unchanged;

[0071] Step 6: After the loaded load stabilizes, the coal seam is excavated through the mining filling trench 341. Excavation is stopped after the coal seam excavation step distance determined in Step 1 is reached.

[0072] Step 7: Place the elastic grouting bag 51 into the space formed after the coal seam is excavated through the mining filling groove 341; inject paste slurry into the elastic grouting bag 51 through the grouting pipe 52 until the elastic grouting bag 51 is full, seal the opening of the elastic grouting bag, and remove the grouting pipe 52; after the paste slurry in the elastic grouting bag 51 solidifies, continue excavation as described in Step 6, and stop coal seam excavation after reaching the coal seam excavation step distance; continue the grouting operation of the elastic grouting bag 51; until all coal seam mining and elastic grouting bag 51 grouting operations are completed; during the coal seam mining and elastic grouting bag 51 grouting process, observe the displacement and damage of the roof and floor strata of the coal seam through the first side plate 34 and the second side plate 35.

[0073] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0074] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0075] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A bag-type filling mining simulation test device, comprising a base (1), characterized in that, It also includes an angle adjustment mechanism (2), a model box (3), a loading mechanism (4), and a bag assembly (5); The base (1) includes a first support section (11) and a second support section (12) that are integrally connected, and a step is formed at the connection between the first support section (11) and the second support section (12); The angle adjustment mechanism (2) includes a rotating fixing component (21) disposed on the upper surface of the first support section (11), an angle adjustment plate (22) is movably connected to the rotating fixing component (21), the bottom surface of the angle adjustment plate (22) away from the rotating fixing component (21) is connected to the angle adjustment component (23) disposed on the upper surface of the second support section (12), and the angle adjustment plate (22) can rotate relative to the base (1) under the drive of the angle adjustment component (23) to realize the angle adjustment between the angle adjustment plate (22) and the base (1); The model box (3) is mounted on the angle adjustment plate (22), and the top of the model box (3) is open; The loading mechanism (4) is located above the model box (3), and the loading mechanism (4) is used to apply a vertical load to the sample set in the model box (3); The bag assembly (5) is used to fill the empty space inside the sample.

2. The bag-type filling mining simulation test device as described in claim 1, characterized in that, The rotating fixing assembly (21) includes a first rotating rod fixing block (211) and a second rotating rod fixing block (212) disposed opposite to each other on both sides of the adjusting plate (22), and a rotating rod (213) passing through the first rotating rod fixing block (211) and the second rotating rod fixing block (212); the adjusting plate (22) is rotatably connected to the rotating rod (213).

3. The bag-type filling mining simulation test device as described in claim 1, characterized in that, The number of the angle adjustment components (23) is two, and the two angle adjustment components (23) are arranged in a mirror symmetrical manner. The angle adjustment component (23) includes an angle adjustment fixing base (231) disposed on the upper surface of the second support section (12), and a screw (232) passing through the angle adjustment fixing base (231) along the width direction of the angle adjustment plate (22). One end of the screw (232) is connected to an angle adjustment turntable (233), and the other end of the screw (232) is movably connected to an angle adjustment top rod (234). The end of the angle adjustment top rod (234) away from the screw (232) is hinged to a fixing member (235) disposed on the bottom surface of the angle adjustment plate (22). The screw (232) can move along the width direction of the angle adjustment plate (22) to push the angle adjustment top rod (234), thereby causing the angle adjustment plate (22) to rotate around the rotating rod (213).

4. The bag-type filling mining simulation test device as described in claim 3, characterized in that, The angle-adjusting fixing base (231) has a through threaded hole, and the outer wall of the screw (232) has an external thread that matches the threaded hole.

5. The bag-type filling mining simulation test device as described in claim 1, characterized in that, The loading mechanism (4) includes a hydraulic loader (41), a loading rod (42) and a loading top cover (43). The power output end of the hydraulic loader (41) is coaxially connected to the loading rod (42), and the loading rod (42) is connected to the loading top cover (43).

6. The bag-type filling mining simulation test device as described in claim 5, characterized in that, The loading rod (42) is provided with a hook (44) at its bottom end, and the loading top cover (43) is provided with a lifting ring (45) for connecting with the hook (44) on its top surface.

7. The bag-type filling mining simulation test device as described in claim 5, characterized in that, The upper surface of the first support section (11) is provided with a frame (6) for fixing the hydraulic loader (41).

8. The bag-type filling mining simulation test device as described in claim 1, characterized in that, The model box (3) is formed by a base plate (31), a front plate (32), a rear plate (33), a first side plate (34), and a second side plate (35). The base plate (31), the front plate (32), and the rear plate (33) are integrally connected. The two ends of the first side plate (34) and the two ends of the second side plate (35) can be inserted and matched with the front plate (32) and the rear plate (33), respectively. A mining filling groove (341) is provided through the first side plate (34).

9. The bag-type filling mining simulation test device as described in claim 8, characterized in that, The first side plate (34) and the second side plate (35) are both transparent tempered glass plates, and the bottom plate (31), the front plate (32) and the rear plate (33) are all steel plates.

10. The bag-type filling mining simulation test device as described in claim 1, characterized in that, The sac assembly (5) includes an elastic grouting sac (51) and a grouting pipe (52) with one end connected to the elastic grouting sac (51).

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