Roadway grouting simulation device

Abstract

The utility model provides a roadway grouting simulation device, which comprises a rock stratum model, a grouting simulation device, a grouting simulation device, a grouting simulation device and a grouting simulation device, and is characterized in that the rock stratum model is provided with a roadway; the grouting tank is arranged in the roadway, the extending direction of the grouting tank is the same as that of the roadway, a plurality of grouting pipes are arranged on the outer side wall of the grouting tank, and the grouting pipes are arranged corresponding to the inner side wall of the roadway so as to conduct grouting on the rock stratum model; the adjusting assembly is oppositely arranged at the end of the roadway simulation body, the adjusting assembly comprises two sliding rails and a supporting rod which are arranged at intervals in the direction perpendicular to the extending direction, the supporting rod is fixedly connected with the end of the grouting tank, the two sliding rails are arranged in parallel, and the two sides of the supporting rod are slidably connected with the two sliding rails correspondingly; the supporting rod can rotate relative to the sliding rail so as to adjust the angle and position of the grouting pipe relative to the inner wall of the roadway. By applying the technical scheme of the utility model, the problem that the test process of the simulation device in the prior art is relatively tedious can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining, in particular to a tunnel grouting simulation device. Background Art

[0002] During coal mining, tunnels are subject to varying degrees of ground stress, which inevitably causes varying degrees of damage to the tunnel roof, floor, and sides, posing a significant threat to coal production safety. To ensure the stability of the tunnel's inner walls, various reinforcement methods are typically employed, such as anchor cables and brackets, or grouting the tunnel's inner walls to fill pores and cracks in the ground, increasing its density and bearing capacity, preventing tunnel collapse, and ensuring project safety.

[0003] During grouting, the grouting angle directly affects the distribution of the slurry in the rock mass around the tunnel. A smaller grouting angle may cause the slurry to be distributed in the shallower rock layers around the tunnel, while a larger grouting angle helps the slurry penetrate into deeper rock layers. As the working face advances, the rock layers around the tunnel will also change. At this time, the grouting angle needs to be adjusted to adapt to the grouting requirements of rock layers with different geological conditions. Currently, a three-dimensional similar simulation device is usually constructed to simulate the effects of different grouting angles under different geological conditions. However, the grouting angle of the existing simulation device is fixed, and each test requires the model and grouting equipment to be disassembled and reassembled, resulting in a more cumbersome test process. Utility Model Content

[0004] The utility model provides a tunnel grouting simulation device to solve the problem that the test process of the simulation device in the prior art is relatively complicated.

[0005] The utility model provides a tunnel grouting simulation device, which includes: a rock formation model, which has a tunnel; a grouting tank, which is arranged in the tunnel, and the grouting tank has the same extension direction as the tunnel, and a plurality of grouting pipes are arranged on the outer wall of the grouting tank, and the grouting pipes are arranged corresponding to the inner wall of the tunnel to grout the rock formation model; an adjusting component, which is relatively arranged at the end of the tunnel simulation body, and the adjusting component includes two slide rails and a support rod that are arranged at intervals perpendicular to the extension direction, the support rod is fixedly connected to the end of the grouting tank, the two slide rails are arranged parallel to each other, and the two sides of the support rod are respectively slidably connected to the two slide rails, and the support rod can rotate relative to the slide rail to adjust the angle and position of the grouting pipe relative to the inner wall of the tunnel.

[0006] Furthermore, two adjustment components are provided, and the two adjustment components are respectively arranged at both ends of the rock formation model. The slide rails extend in the horizontal direction, and the two slide rails of the same adjustment component are arranged at intervals on both sides of the tunnel in the height direction. The adjustment component also includes a connecting part, and the support rod is connected to the slide rail through the connecting part to move relative to the slide rail.

[0007] Furthermore, the connecting member includes a pulley and a sleeve, the side wall of the sleeve is rotatably connected to the rotating shaft of the pulley, the sleeve is sleeved on the support rod, the pulley can be movably set in the slide rail, and the support rod can slide relative to the sleeve.

[0008] Furthermore, a first limiting member is provided between the sleeve and the support rod to limit relative sliding between the support rod and the sleeve.

[0009] Furthermore, a first insertion hole is provided on the side wall of the sleeve, a plurality of second insertion holes are provided on the support rod at intervals along the extension direction, and the first limiting member includes a pin, which can pass through the first insertion hole and the second insertion hole in sequence.

[0010] Furthermore, a second limiting member is provided between the slide rail and the pulley to limit the relative movement of the pulley with respect to the slide rail.

[0011] Furthermore, the second limiting member includes two stop blocks, which are movably arranged in the slide rail, and the two stop blocks are respectively located on both sides of the pulley, and the stop blocks and the slide rail can be fixedly connected by fasteners.

[0012] Furthermore, the tunnel grouting simulation device also has a simulation box, the simulation box has a containing cavity, the rock formation model is arranged in the containing cavity, and a waterproof coating is provided between the inner wall of the containing cavity and the rock formation model.

[0013] Furthermore, the tunnel grouting simulation device also includes a ground pressure simulation component, which is arranged between the simulation box and the rock formation model, and is used to provide pressure to the rock formation model.

[0014] Furthermore, the ground pressure simulation component includes multiple driving rods and multiple pressure plates, and the multiple driving rods and the multiple pressure plates are arranged in a one-to-one correspondence. The multiple pressure plates are arranged around the outer wall of the rock formation model, and the driving rods are arranged between the inner wall of the accommodating cavity and the pressure plate to provide pressure to the pressure plate toward the rock formation model.

[0015] By applying the technical solution of the present invention, a tunnel grouting simulation device can construct an area requiring grouting through a rock formation model. The grouting tank is used to store slurry, and grouting is performed into the rock formation model through multiple grouting pipes provided on the side wall of the grouting tank to simulate the grouting effect. Before grouting, the position of the support rod relative to the two slide rails can be adjusted to drive the grouting pipe to rotate. At this time, the angle of the grouting pipe can be adjusted to achieve quick adjustment of the grouting angle to simulate the optimal grouting scheme of the on-site tunnel. It can better simulate tunnels and grouting conditions of various complex occurrence states and has strong on-site practicality. In addition, there is no need to disassemble and reassemble the rock formation model and the grouting tank when conducting multiple tests. It is only necessary to rotate the grouting tank by adjusting the assembly, which can simplify the test process and improve the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 The schematic diagram of the structure of the tunnel grouting simulation device provided by the utility model is shown;

[0018] Figure 2 The figure shows a structural diagram of the pulping system provided by the present utility model.

[0019] The above drawings include the following reference numerals:

[0020] 100. Rock formation model; 110. Roadway;

[0021] 200, grouting tank; 210, grouting pipe; 220, dial;

[0022] 310, slide rail; 320, support rod; 330, connector;

[0023] 400, simulation box; 410, driving rod; 420, pressing plate;

[0024] 500, high-pressure gas tank;

[0025] 01. Mixing tank; 02. Grouting pump; 03. Controller. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way 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 making creative efforts are within the scope of protection of the present invention.

[0027] like Figure 1As shown, an embodiment of the present invention provides a tunnel grouting simulation device, which includes a rock formation model 100, a grouting tank 200, and an adjustment component. The rock formation model 100 has a tunnel 110, and the grouting tank 200 is disposed in the tunnel 110. The grouting tank 200 extends in the same direction as the tunnel 110. A plurality of grouting pipes 210 are disposed on the outer wall of the grouting tank 200. The grouting pipes 210 are disposed corresponding to the inner wall of the tunnel 110 to inject grout into the rock formation model 100. The adjustment component is relatively arranged at the end of the tunnel 110 simulation body. The adjustment component includes two slide rails 310 and a support rod 320 arranged at intervals perpendicular to the extension direction. The support rod 320 is fixedly connected to the end of the grouting tank 200. The two slide rails 310 are arranged parallel to each other. The two sides of the support rod 320 are respectively slidably connected to the two slide rails 310, and the support rod 320 can rotate relative to the slide rail 310 to adjust the angle and position of the grouting pipe 210 relative to the inner wall of the tunnel 110.

[0028] By applying the technical solution of the present invention, the tunnel grouting simulation device can construct an area requiring grouting through a rock formation model 100, and the grouting tank 200 is used to store slurry, and grouting is performed into the rock formation model 100 through a plurality of grouting pipes 210 provided on the sidewall of the grouting tank 200 to simulate the grouting effect. Before grouting, the position of the support rod 320 relative to the two slide rails 310 can be adjusted to drive the grouting tank 200 to rotate. At this time, the angle of the grouting pipe 210 can be adjusted to achieve quick adjustment of the grouting angle to simulate the optimal grouting scheme of the on-site tunnel. It can better simulate tunnels and grouting conditions of various complex occurrence states, and has strong on-site practicality. In addition, there is no need to disassemble and reassemble the rock formation model 100 and the grouting tank 200 when conducting multiple tests. It is only necessary to rotate the grouting tank 200 by adjusting the assembly, which can simplify the test process and improve the test efficiency.

[0029] Specifically, when the support rod 320 moves in one direction relative to one of the slide rails 310, the support rod 320 can move relative to the other slide rail 310. At this time, the support rod 320 can rotate in the height direction to drive the grouting tank 200 to rotate in the tunnel and adjust the angle of the grouting pipe 210.

[0030] Specifically, when the support rod 320 moves in the same direction relative to the two slide rails 310 , the support rod 320 can move in the horizontal direction to drive the grouting tank 200 to move in the tunnel and adjust the position of the grouting pipe 210 .

[0031] Optionally, the grouting tank 200 may be cylindrical or square. Figure 1As shown, the grouting tank 200 provided in the embodiment of the present application is a square tube, so that it is convenient to set the grouting pipe 210 on the surface of the grouting tank 200. The grouting pipe 210 can be set on the entire side wall or part of the side wall of the grouting tank 200, and can be adjusted according to specific experimental needs.

[0032] Specifically, the grouting pipe 210 may be a telescopic structure of a casing, so as to adjust the distance of the grouting pipe 210 relative to the inner wall of the tunnel 110 and the grouting depth.

[0033] Furthermore, a control valve, such as a one-way valve or a ball valve, may also be provided on the grouting pipe 210 to control the flow direction and flow rate of the slurry in the grouting pipe 210 .

[0034] In the present application, two adjustment components are provided, and the two adjustment components are respectively provided at both ends of the rock formation model 100. Through the above-mentioned setting, the connection between the grouting tank 200 and the support rod 320 can be prevented from forming a cantilever structure, thereby ensuring the stability of the connection between the grouting tank 200 and the support rod 320.

[0035] In some feasible embodiments of the present application, the slide rail 310 extends in the height direction, and the two slide rails 310 of the same adjustment assembly are arranged at intervals on both sides of the tunnel 110 in the horizontal direction. In this way, the angle of the grouting pipe 210 can be adjusted while adjusting the distance between the grouting pipe 210 and the two side walls of the tunnel 110.

[0036] In some other feasible embodiments of the present application, the slide rail 310 extends in the horizontal direction, and the two slide rails 310 of the same adjustment assembly are arranged at intervals on both sides of the tunnel 110 in the height direction. In this way, the angle of the grouting pipe 210 can be adjusted while adjusting the distance between the grouting pipe 210 and the top and bottom plates of the tunnel 110.

[0037] Furthermore, the adjustment assembly also includes a connector 330, through which the support rod 320 is connected to the slide rail 310 so as to move relative to the slide rail 310. By providing the connector 330, the connection and relative movement of the support rod 320 relative to the slide rail 310 can be achieved. In addition, as the support rod 320 rotates, the length of the support rod 320 located between the two slide rails 310 also changes, necessitating a connection through the connector 330.

[0038] Specifically, the connector 330 includes a pulley and a sleeve. The sidewall of the sleeve is rotatably connected to the pulley's rotating shaft. The sleeve is mounted on the support rod 320. The pulley is movably mounted within the slide rail 310, and the support rod 320 can slide relative to the sleeve. This arrangement allows the pulley to be embedded within the slide rail 310, reducing friction between the connector 330 and the slide rail 310. The sleeve cooperates with the support rod 320, allowing the support rod 320 to move relative to the connector 330, thereby adjusting the length of the support rod 320 between the two slide rails 310.

[0039] In other feasible embodiments, the sleeve may not be provided. By providing a sliding groove on the support rod 320, the rotating shaft of the pulley can be movably provided in the sliding groove, thereby achieving relative movement between the connecting member 330 and the support rod 320.

[0040] Furthermore, a first stopper is provided between the sleeve and the support rod 320 to limit relative sliding between the support rod 320 and the sleeve. The provision of the first stopper can limit the sliding of the support rod 320 relative to the sleeve, thereby ensuring that the support rod 320 does not slide, thereby ensuring that the support rod 320 is fixed at a certain angle and does not change. When the support rod 320 and the sleeve are relatively fixed, the distance between the support rod 320 and the two slide rails 310 does not change, thereby achieving a fixed grouting angle for the grouting pipe 210.

[0041] Specifically, a first insertion hole is provided on the side wall of the sleeve, and a plurality of second insertion holes are provided on the support rod 320 at intervals along its extension direction. The first stopper includes a latch that can sequentially pass through the first and second insertion holes. This arrangement allows the latch to restrict relative sliding between the sleeve and the support rod 320 through the first and second insertion holes, thereby achieving positioning of the support rod 320.

[0042] In other embodiments of the present application, the first limiting member may also be a fastening structure such as a clamping member or a nut, as long as it can play a limiting role.

[0043] Furthermore, a second stopper is provided between the slide rail 310 and the pulley to limit the relative movement of the pulley with respect to the slide rail 310. Since the grouting tank 200 is relatively heavy after being filled with slurry, limiting the position only by the first stopper may result in failure of the limit, causing the support rod 320 to slip. By providing the second stopper between the slide rail 310 and the pulley, the stability of the support rod 320 fixed at a certain angle can be further ensured.

[0044] Specifically, the second limiting member includes two stop blocks, which are movably disposed within the slide rail 310 and are located on either side of the pulley. Fasteners can be used to secure the stop blocks to the slide rail 310. Once the angle of the support rod 320 is determined, the two stop blocks can be secured to either side of the pulley with fasteners to limit the pulley's displacement within the slide rail 310.

[0045] The fasteners may be fixing structures such as bolts.

[0046] Similarly, the second limiting member may also be configured as a fastening structure such as a clamping member or a nut.

[0047] Specifically in the present application, a dial 220 may be provided on the support rod 320 or the grouting tank 200 to display the current tilt angle of the grouting pipe 210 .

[0048] Specifically, the tunnel grouting simulation device further includes a simulation box 400 having a receiving chamber, within which the rock formation model 100 is disposed. A waterproof coating is provided between the inner wall of the receiving chamber and the rock formation model 100. This arrangement allows the simulation box 400 to limit slurry spillage from the rock formation model 100, while the waterproof coating confines the slurry within the rock formation model 100, ensuring a clean test environment.

[0049] Specifically, the simulation box 400 may be made of a transparent material, such as glass or acrylic, so that the seepage state of the slurry can be observed with the naked eye.

[0050] Furthermore, the tunnel grouting simulation device also includes a ground pressure simulation component, which is disposed between the simulation box 400 and the rock formation model 100 and is used to provide pressure to the rock formation model 100. Through this arrangement, the ground pressure simulation component can simulate the ground pressure exerted on the rock formation model 100 to simulate grouting reinforcement of tunnels 110 with different geological conditions in the coal mine. Furthermore, by adjusting the orientation of the grouting pipe, multiple grouting schemes can be simulated to determine the optimal grouting parameters.

[0051] Specifically, the ground pressure simulation assembly includes a plurality of drive rods 410 and a plurality of pressure plates 420. The plurality of drive rods 410 and the plurality of pressure plates 420 are arranged in a one-to-one correspondence. The plurality of pressure plates 420 are arranged around the outer wall of the rock formation model 100. The drive rods 410 are arranged between the inner wall of the accommodating cavity and the pressure plates 420 to apply pressure to the pressure plates 420 toward the rock formation model 100. Through this arrangement, different drive rods 410 can be controlled separately to cause each drive rod 410 to push the pressure plates 420 to squeeze the rock formation model 100, thereby simulating the grouting state of the rock formation model 100 when different positions are subjected to different pressures.

[0052] Optionally, the driving rod 410 may be a hydraulic rod or an electro-hydraulic push rod.

[0053] like Figure 2 As shown, the tunnel grouting simulation device also includes a slurrying system, which includes a mixing box 01 and a grouting pump 02. A stirring rod is provided in the mixing box 01, and the driving unit of the stirring rod and the grouting pump 02 are electrically connected to the controller 03 respectively. The controller 03 can control the start and stop of the stirring rod and the grouting pump 02. The discharge port of the mixing box 01 is connected to the inlet of the grouting pump 02, and the outlet of the grouting pump 02 is connected to the grouting tank 200 through a hose.

[0054] During the grouting operation, the controller 03 can control the operation of the mixing box 01 and the grouting pump 02 to control the conveying process of the entire grouting system. After the slurry preparation process is completed in the mixing box 01, the grouting pump 02 is started by the controller 03, and the grouting pump 02 begins to drive the grouting pipe to draw the slurry in the mixing box 01 into the conveying hose, and finally transport it to the grouting tank 200. At this time, the slurry in the grouting tank 200 can be controlled by the coordinated use of the high-pressure gas tank 500 and the long-handled ball valve to be injected into the rock formation model 100 through the grouting pipe 210. The high-pressure gas tank 500 is connected to the grouting tank 200 through a high-pressure gas pipe, and the high-pressure inert gas filled in the high-pressure gas tank 500 is flushed into the grouting tank 200 to make the grouting more sufficient. After that, the consolidation conditions and strength of the top and bottom plates and the two sides of the tunnel 110 are observed and analyzed, and the grouting parameters and the slurry ratio are optimized and screened.

[0055] By using a tunnel grouting simulation device proposed in the present invention, by adjusting the particle size of the waste rock of the simulation material, rock layer models 100 with different properties are produced, and grouting reinforcement simulations are performed on tunnels with different occurrence conditions in coal mines. Moreover, a variety of grouting schemes can be simulated by adjusting the orientation of the grouting pipe 210, thereby realizing visualization of the tunnel grouting effect and effectively feeding back the optimal grouting scheme suitable for the on-site tunnel. It can better simulate tunnels and grouting conditions with various complex occurrence conditions and has strong on-site practicality.

[0056] 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, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0057] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. 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 actual proportional relationships. 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 part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0058] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, 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 the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0059] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. 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 figures. For example, if the device in the 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.

[0060] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the 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 utility model.

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A tunnel grouting simulation device, characterized in that: The tunnel grouting simulation device comprises: A rock formation model (100), wherein the rock formation model (100) has a roadway (110); A grouting tank (200) is arranged in the tunnel (110), the grouting tank (200) and the tunnel (110) extending in the same direction, a plurality of grouting pipes (210) are arranged on the outer wall of the grouting tank (200), and the grouting pipes (210) are arranged corresponding to the inner wall of the tunnel (110) to grout the rock formation model (100); An adjustment component is relatively arranged at the end of the tunnel (110) simulation body, and the adjustment component includes two slide rails (310) and a support rod (320) arranged at intervals perpendicular to the extension direction. The support rod (320) is fixedly connected to the end of the grouting tank (200), and the two slide rails (310) are arranged parallel to each other. Both sides of the support rod (320) are slidably connected to the two slide rails (310), and the support rod (320) can rotate relative to the slide rail (310) to adjust the angle and position of the grouting pipe (210) relative to the inner wall of the tunnel (110).

2. The tunnel grouting simulation device according to claim 1, characterized in that: Two adjusting assemblies are provided, and the two adjusting assemblies are respectively provided at two ends of the rock formation model (100). The slide rail (310) extends in the horizontal direction. The two slide rails (310) of the same adjusting assembly are provided at intervals on both sides of the tunnel (110) in the height direction. The adjusting assembly also includes a connecting piece (330). The support rod (320) is connected to the slide rail (310) through the connecting piece (330) so as to move relative to the slide rail (310).

3. The tunnel grouting simulation device according to claim 2, characterized in that: The connecting member (330) includes a pulley and a sleeve, the side wall of the sleeve is rotatably connected to the rotating shaft of the pulley, the sleeve is sleeved on the support rod (320), the pulley can be movably set in the slide rail (310), and the support rod (320) can slide relative to the sleeve.

4. The tunnel grouting simulation device according to claim 3, characterized in that: A first limiting member is further provided between the sleeve and the support rod (320) to limit relative sliding between the support rod (320) and the sleeve.

5. The tunnel grouting simulation device according to claim 4, characterized in that: A first insertion hole is provided on the side wall of the sleeve, a plurality of second insertion holes are provided on the support rod (320) at intervals along the extension direction, and the first limiting member includes a latch, which can pass through the first insertion hole and the second insertion hole in sequence.

6. The tunnel grouting simulation device according to claim 3, characterized in that: A second limiting member is further provided between the slide rail (310) and the pulley to limit the relative movement of the pulley relative to the slide rail (310).

7. The tunnel grouting simulation device according to claim 6, characterized in that: The second limiting member includes two stop blocks, which are movably arranged in the slide rail (310), and the two stop blocks are respectively located on both sides of the pulley, and the stop blocks and the slide rail (310) can be fixedly connected by fasteners.

8. The tunnel grouting simulation device according to claim 1, characterized in that: The tunnel grouting simulation device further comprises a simulation box (400), wherein the simulation box (400) comprises a receiving cavity, wherein the rock formation model (100) is arranged in the receiving cavity, and a waterproof coating is provided between the inner wall of the receiving cavity and the rock formation model (100).

9. The tunnel grouting simulation device according to claim 8, characterized in that: The tunnel grouting simulation device further comprises a ground pressure simulation component, which is arranged between the simulation box (400) and the rock formation model (100), and is used to provide pressure to the rock formation model (100).

10. The tunnel grouting simulation device according to claim 9, characterized in that: The ground pressure simulation component includes a plurality of driving rods (410) and a plurality of pressure plates (420), wherein the plurality of driving rods (410) and the plurality of pressure plates (420) are arranged in a one-to-one correspondence, and the plurality of pressure plates (420) are arranged around the outer wall of the rock formation model (100). The driving rods (410) are arranged between the inner wall of the accommodating cavity and the pressure plates (420) to provide pressure to the pressure plates (420) toward the rock formation model (100).

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