A dynamic deformation soil seepage simulation device

Abstract

The present invention relates to a dynamic deformation soil seepage simulation device, which belongs to the field of seepage simulation technology and is used to solve the problem that the existing seepage simulation device cannot perform dynamic deformation analysis on the experimental soil. The present invention includes: an experimental soil, a confining pressure control component, a seepage control component and a soil dynamic deformation control mechanism; wherein the confining pressure control component is a cylindrical structure, and the experimental soil is arranged inside the confining pressure control component; the soil dynamic deformation control mechanism is arranged below the experimental soil, and is used to control the deformation of the experimental soil; the seepage control component is arranged above the experimental soil, and is fixedly connected to the confining pressure control component; the seepage control component can allow liquid water to penetrate into the experimental soil. The present invention can realize soil seepage simulation under the dynamic deformation state of the soil.

Description

Technical Field

[0001] The invention relates to the technical field of seepage simulation, and in particular to a dynamic deformation soil seepage simulation device. Background Art

[0002] Considering the evolution characteristics of mining-induced fractures in the key impermeable rock strata, under the action of seepage field and stress field, the key impermeable layer system is a time-varying nonlinear seepage system. Whether seepage destabilization occurs after compaction stabilization requires in-depth research and verification. The development height of a single water-conducting fracture zone cannot be used as a scientific and accurate on-site evaluation indicator.

[0003] In underground mining, simulation experimental research is currently the most common research method, but there are few studies on the simulation of similar materials in mining evolution with water-repellent key layers as the control object. The main reason is the insufficiency of simulation equipment.

[0004] The simulation devices in the prior art have a common weakness, that is, the test pieces used can only undergo simple changes. During the experiment, the effects of mining disturbance on the test pieces are distorted or inaccurate to a large extent, and there are great limitations in use, making it impossible to conduct a dynamic, comprehensive and systematic study on the seepage conditions of the experimental soil body caused by mining disturbance. Summary of the invention

[0005] In view of the above analysis, the present invention aims to provide a dynamic deformation soil seepage simulation device to solve the problem that the existing seepage simulation device cannot perform dynamic deformation analysis on the experimental soil.

[0006] The purpose of the present invention is mainly achieved through the following technical solutions:

[0007] A dynamic deformation soil seepage simulation device comprises: an experimental soil, a confining pressure control component, a seepage control component and a soil dynamic deformation control mechanism; wherein the confining pressure control component is a cylindrical structure, and the experimental soil is arranged inside the confining pressure control component; the soil dynamic deformation control mechanism is arranged below the experimental soil and is used to control the deformation of the experimental soil; the seepage control component is arranged above the experimental soil and is fixedly connected to the confining pressure control component; the seepage control component can allow liquid water to penetrate into the experimental soil.

[0008] Furthermore, the seepage control assembly includes: an upper cover and a pad; the upper cover is fixedly connected to the outer frame; and the pad is arranged between the upper cover and the experimental soil.

[0009] Specifically, the upper cover is provided with a seepage inflow hole; the pad is provided with a plurality of seepage holes; the seepage holes are connected with the seepage inflow holes through the pressure equalization grooves. The seepage inflow holes can be connected with an external osmotic pressure generating device.

[0010] Furthermore, the confining pressure control assembly includes: an outer frame and an inner wall; the outer frame is made of a rigid metal material; the inner wall is arranged inside the outer frame and forms a confining pressure cavity with the outer frame; the inner wall is made of a flexible, impermeable material.

[0011] Furthermore, the soil dynamic deformation control mechanism includes: track wheels and permeable tracks.

[0012] Specifically, two track wheels are provided, and the heights of the two track wheels are independently controlled by two sets of telescopic rod assemblies; the permeable track is sleeved on the outside of the two track wheels, and the permeable track is used to support the experimental soil.

[0013] Furthermore, it also includes a control wheel; the control wheel is arranged between the two track wheels, and the control wheel is driven to move through the telescopic rod assembly.

[0014] Specifically, the telescopic rod assembly includes: a first telescopic rod assembly, a second telescopic rod assembly and a third telescopic rod assembly; the track wheel is driven to move through the first telescopic rod assembly; the control wheel is driven to move through the second telescopic rod assembly; the third telescopic rod assembly is connected to the permeable track to drive the deformation of the permeable track.

[0015] Furthermore, the telescopic rod assembly is arranged on the lower cover; the bottom of the outer frame is fixedly connected to the lower cover; and the inner side of the inner wall is also provided with supporting structural steel.

[0016] Furthermore, the outer frame and the inner wall are both rectangular cylindrical structures; four baffles are evenly arranged between the outer frame and the inner wall, and the four baffles divide the confining pressure cavity into four side cavities.

[0017] Specifically, a first confining pressure water hole is arranged on the upper cover, and a second confining pressure water hole is arranged on the pad; the first confining pressure water hole can be connected to an external confining pressure generating device; the first confining pressure water hole is connected to the second confining pressure water hole, and four first confining pressure water holes and four second confining pressure water holes are each provided; the four second confining pressure water holes are respectively connected to four side cavities.

[0018] The technical solution of the invention can achieve at least one of the following effects:

[0019] 1. The dynamic deformation soil seepage simulation device of the present invention is composed of an experimental soil part, a confining pressure control part, a seepage control part, and a soil dynamic deformation control part. The confining pressure control part controls the confining pressure of the experimental soil and can control the surrounding pressures separately according to needs; the seepage control part controls the seepage of the soil; the soil dynamic deformation control part controls the dynamic deformation of the soil by performing point-by-point control on the waterproof plate crawler support at the bottom of the soil; a seepage simulation experiment of the dynamic change of the soil is carried out under the dynamic deformation state of the soil, and the seepage water is collected and analyzed in real time, thereby realizing the seepage simulation of the soil in the dynamic deformation state.

[0020] 2. The dynamic deformation soil seepage simulation device of the present invention can conduct a dynamic change soil seepage experiment on the experimental soil through seepage and confining pressure control, and can control the dynamic change of the experimental soil to simulate the soil seepage under the influence of mining, and can record and analyze the seepage water in real time. The influence of mining disturbance on the seepage state can be obtained, the distortion or inaccuracy of the simulation state can be avoided, and the dynamic deformation analysis of the experimental soil can be realized.

[0021] 3. The dynamic deformation soil seepage simulation device of the present invention is provided with a baffle to divide the confining pressure cavity outside the inner wall into four side cavities. At the same time, the confining pressure control system can control the confining pressure of the four side cavities around the inner wall respectively, so as to realize the simulation of the soil seepage state under different confining pressure states, have better applicability and can realize more accurate soil dynamic simulation.

[0022] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0024] Figure 1 A cross-sectional view of a dynamic deformation soil seepage simulation device of the present invention;

[0025] Figure 2 A schematic diagram of the dynamic deformation of the device is a cross-sectional view of the dynamic deformation soil seepage simulation device of the present invention;

[0026] Figure 3 It is a schematic diagram of the installation of the baffle of the present invention;

[0027] Figure 4 is a perspective view of the upper cover of the present invention;

[0028] Figure 5 is a perspective view of an outer frame of the present invention;

[0029] Figure 6 is a perspective view of a pad of the present invention;

[0030] Figure 7 is a schematic diagram of the lower cover of the present invention;

[0031] Figure 8 It is a schematic diagram of the track wheel and the control wheel of the present invention;

[0032] Fig. 9 is a schematic diagram of a water-permeable crawler of the present invention;

[0033] Fig.10 It is a schematic diagram of the installation of the control connecting rod of the present invention;

[0034] Fig.11 is a schematic diagram of a guide rail linear slide of the present invention;

[0035] Fig.12 It is a schematic diagram of the supporting structure steel of the present invention.

[0036] Reference numerals:

[0037] 01-upper cover; 02-outer frame; 03-pad; 04-inner wall; 05-lower cover; 06-track wheel; 07-permeable track; 08-control wheel; 09-control link; 10-guide rail linear slide; 11-support structure steel; 12-baffle;

[0038] 0101-first through hole; 0102-second through hole; 0103-infiltration water hole; 0104-first surrounding pressure water hole;

[0039] 0201-third through hole; 0202-fourth through hole; 0203-step opening; 0204-groove;

[0040] 0301-first threaded hole; 0302-second water hole; 0303-pressure-equalizing slot; 0304-seepage hole;

[0041] 0501-fifth through hole; 0502-straight slot;

[0042] 0601-toothed structure; 0602-sixth through hole;

[0043] 0701-Steel structure crawler; 0702-Loose permeable board; 0703-Gap;

[0044] 0901-crossbar; 0902-telescopic rod; 0903-fixed platform;

[0045] 1001-motor; 1002-guide rail; 1003-second threaded hole;

[0046] 1101 - first support plate; 1102 - second support plate; 1103 - fixed structure. DETAILED DESCRIPTION

[0047] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0048] A specific embodiment of the present invention discloses a dynamic deformation soil seepage simulation device, such as Figure 1 As shown, it includes: an experimental soil body, a confining pressure control component, a seepage control component and a soil body dynamic deformation control mechanism; wherein the confining pressure control component is a cylindrical structure, and the experimental soil body is arranged inside the confining pressure control component; the soil body dynamic deformation control mechanism is arranged below the experimental soil body, and is used to control the deformation of the experimental soil body; the seepage control component is arranged above the experimental soil body and is fixedly connected to the confining pressure control component; the seepage control component can allow liquid water to penetrate into the experimental soil body.

[0049] The experimental soil is a multi-layer material composite, and the structural components of the experimental soil are determined according to the soil structure to be simulated; the outer side of the experimental soil fits the inner surface of the inner wall 04 , and the shape of the experimental soil is determined according to the inner cavity shape of the inner wall 04 .

[0050] 1) Seepage control components:

[0051] In a specific embodiment of the present invention, Figure 4 , Figure 6 As shown, the seepage control assembly includes: an upper cover 01 and a pad 03; the upper cover 01 is fixedly connected to the outer frame 02; the pad 03 is arranged between the upper cover 01 and the experimental soil; the upper cover 01 is provided with a seepage inlet hole 0103; the pad 03 is provided with a plurality of seepage holes 0304.

[0052] Specifically, Figure 4 As shown, the upper cover 01 is provided with a first through hole 0101, a second through hole 0102, a seepage inflow hole 0103 and a first confining pressure inflow hole 0104. The first through hole 0101 is used to install a first bolt and is fixedly connected to the outer frame 02 through the first bolt; the second through hole 0102 is used to install a second bolt and is fixedly connected to the pad 03 through the second bolt; the seepage inflow hole 0103 is used to connect to an external seepage generation device, thereby providing seepage water to the experimental soil; the first confining pressure inflow hole 0104 is used to connect to an external confining pressure generation device, thereby providing confining pressure control around the experimental soil.

[0053] Specifically, Figure 6 As shown, the pad 03 is provided with a first threaded hole 0301, a second water-enclosing hole 0302, a pressure-equalizing groove 0303 and a seepage hole 0304; wherein, the first threaded hole 0301 is aligned with the second through hole 0102 on the upper cover 01, and a second bolt is installed in the first threaded hole 0301 and the second through hole 0102, and the upper cover 01 and the pad 03 are fixedly connected by the second bolt.

[0054] Furthermore, a second confining pressure water hole 0302 is provided on the pad 03; the upper end of the second confining pressure water hole 0302 is aligned with and connected to the first confining pressure water hole 0104, and the lower end is connected to the confining pressure cavity between the outer frame 02 and the inner wall 04. There are four first confining pressure water holes 0104 and four second confining pressure water holes 0302; the four second confining pressure water holes 0302 are connected to four side cavities respectively. The second confining pressure water holes 0302 are used to inject liquid into the confining pressure cavity to provide the confining pressure of the test soil.

[0055] Specifically, a pressure equalizing groove 0303 is provided on the upper end surface of the pad 03, and the pressure equalizing groove 0303 is connected to the seepage inlet hole 0103 on the upper cover 01; a plurality of seepage holes 0304 are provided below the pressure equalizing groove 0303; the pressure equalizing groove 0303 and the seepage holes 0304 have the function of uniform seepage.

[0056] The seepage control component also includes an external seepage generating device. Preferably, the seepage generating device is a water pump or a hydraulic pump, which is connected to a water tank to provide seepage water required for seepage simulation.

[0057] During implementation, the external seepage generation device is connected through the seepage inlet hole 0103 reserved on the upper cover 01; the water body enters the pressure equalization slot 0303 through the seepage inlet hole 0103 for pressure equalization, and the pressure-equalized liquid enters the experimental soil from the seepage hole 0304 to achieve seepage simulation. The seepage holes 0304 are evenly set on the pad 03 to uniformly apply osmotic pressure to the experimental soil. The external confining pressure generation device has the same structure as the external seepage generation device; the external confining pressure generation device is connected to the first confining pressure inlet hole 0104, and the confining pressure water body enters the confining pressure cavity through the first confining pressure inlet hole 0104 and the second confining pressure inlet hole 0302 to provide confining pressure on the experimental soil.

[0058] 2) Confining pressure control components:

[0059] In a specific embodiment of the present invention, Figure 3 As shown, the confining pressure control assembly includes: an outer frame 02 and an inner wall 04; the outer frame 02 is made of a rigid metal material; the inner wall 04 is arranged inside the outer frame 02 and forms a confining pressure cavity with the outer frame 02; the inner wall 04 is made of a flexible, impermeable material.

[0060] like Figure 3 , Figure 5 As shown, both the outer frame 02 and the inner wall 04 are rectangular cylindrical structures. The inner wall 04 is smaller than the outer frame 02, and the inner wall 04 is coaxially arranged with the outer frame 02. The interior of the inner wall 04 is used to fill the test soil, and the confining pressure cavity between the inner wall 04 and the outer frame 02 is used to store liquid to provide confining pressure.

[0061] Specifically, the outer frame 02 is provided with a third through hole 0201 and a fourth through hole 0202 that cooperate with the upper cover 01 and the lower cover 05 , a stepped opening 0203 that cooperates with the inner wall 04 , and a groove 0204 that cooperates with the baffle 12 for positioning.

[0062] The third through hole 0201 is used to install the first bolt, and the outer frame 02 is fixedly connected to the upper cover 01 through the first bolt. The fourth through hole 0202 is used to install the third bolt, and the outer frame 02 is fixedly connected to the lower cover 05 through the third bolt.

[0063] like Figure 1 , Figure 5 As shown, a stepped opening 0203 is provided in the middle of the outer frame 02 ; and the inner wall 04 is provided inside the stepped opening 0203 .

[0064] like Figure 5 As shown, the four inner corners of the outer frame 02 are provided with grooves 0204; correspondingly, the four outer corners of the inner wall 04 are also provided with slots; one side of the baffle 12 is inserted into the groove 0204, and the other side is inserted into the slot on the outer side of the inner wall 04. Figure 3 As shown, four baffles 12 are evenly arranged between the outer frame 02 and the inner wall 04, and the four baffles 12 divide the confining pressure cavity into four side cavities. During the experimental simulation, water is independently injected into the four side cavities through the four confining pressure water inlet holes, so that the water pressure in the four side cavities can be independently controlled. The four side cavities can apply different sizes of side pressures to the four sides of the inner wall 04 and the experimental soil body, so as to provide a more accurate circumferential confining pressure for the experimental soil body.

[0065] Furthermore, the upper part of the confining pressure control assembly is sealed by the pad 03, and the lower part of the confining pressure control assembly is sealed by the lower cover 05; wherein, the upper cover 01, the pad 03, the outer frame 02 and the lower cover 05 are all made of rigid metal materials, and the inner wall 04 is made of flexible and impermeable materials. The inner wall 04 is made of a single piece or spliced ​​flexible and impermeable material, and the shape can be adjusted as needed according to the outer shape of the experimental soil, so as to seal the experimental soil and separate and seal it.

[0066] Specifically, Figure 1As shown, the outer side surface of the pad 03 is fitted with the inner side surface of the outer frame 02; the upper end surface of the lower cover 05 is fitted with the lower end surface of the outer frame 02. The upper end of the inner wall 04 contacts the pad 03 and is sealed through the pad 03, and the lower end of the inner wall 04 contacts the upper end surface of the lower cover 05 and is sealed through the lower cover 05. A reserved groove is set on the lower cover 05 to cooperate with the lower end of the inner wall 04 to achieve positioning and sealing; a reserved groove is set on the lower end surface of the pad 03 to cooperate with the upper end of the inner wall 04 to achieve positioning and sealing at the same time. The upper end of the baffle 12 is contacted and sealed with the pad 03, the lower end of the baffle 12 is contacted and sealed with the lower cover 05, the left side of the baffle 12 is contacted and sealed with the inner wall 04, and the right side of the baffle 12 is contacted and sealed with the outer frame 02, dividing the confining pressure cavity between the inner wall 04 and the outer frame 02 into four sealed trapezoidal side cavities. The external confining pressure generating device is connected to the four side chambers through the confining pressure water inlet holes reserved on the upper cover 01 and the pad 03.

[0067] When implementing, Figure 1 As shown, the external confining pressure generating device is connected with the second confining pressure water hole 0302 on the pad 03 through the first confining pressure water hole 0104 reserved on the upper cover 01, and then connected with the four side cavities outside the inner wall 04 through the second confining pressure water hole 0302. By injecting liquid into the side cavity, the confining pressure is applied to the inner wall 04 and the experimental soil through the liquid pressure, so as to realize the control of the confining pressure of the external cavity of the simulation device.

[0068] 3) Soil dynamic deformation control mechanism:

[0069] In a specific embodiment of the present invention, Figure 1 , Fig.10 As shown, the soil dynamic deformation control mechanism includes: a lower cover 05, a track wheel 06, a permeable track 07 and a control wheel 08; two track wheels 06 are provided, and the heights of the two track wheels 06 are independently controlled by two sets of telescopic rod assemblies; the permeable track 07 is sleeved on the outside of the two track wheels 06, and the permeable track 07 is arranged below the experimental soil body to support the experimental soil body. The permeable track 07 can support the experimental soil body and allow seepage water to penetrate through. The control wheel 08 is arranged between the two track wheels 06, and the control wheel 08 is driven to move by the telescopic rod assembly to achieve the tensioning of the permeable track 07.

[0070] Furthermore, a telescopic rod assembly is installed on the lower cover 05, and the telescopic rod assembly drives the track wheel 06 and the control wheel 08 to move, adjusts the external position and shape of the permeable track 07, and thus realizes the dynamic deformation of the experimental soil. The telescopic rod assembly includes: a first telescopic rod assembly, a second telescopic rod assembly, and a third telescopic rod assembly; the track wheel 06 is driven to move by the first telescopic rod assembly; the control wheel 08 is driven to move by the second telescopic rod assembly; the third telescopic rod assembly is connected to the permeable track 07, and is used to drive the deformation of the permeable track 07.

[0071] Furthermore, if Fig. 9 As shown, the permeable track 07 is annular and has a double-layer structure. Specifically, in a specific embodiment of the present invention, the inner layer of the permeable track 07 is a steel structure track 0701 coated with a hydrophobic material coating, and the steel structure track 0701 can cooperate with the track wheel 06 and the control wheel 08 for movement; the outer layer is a loose permeable plate 0702 coated with a hydrophobic material coating, and the upper surface of the loose permeable plate 0702 is in contact with the experimental soil; a plurality of gaps 0703 are provided between the steel structure track 0701 and the loose permeable plate 0702, and a control link 09 is installed in the gap 0703, so that the control link 09 can be connected to the permeable track 07, thereby driving the deformation of the permeable track 07 to achieve the seepage simulation of the deformed soil.

[0072] In a specific embodiment of the present invention, Figure 7 As shown, the lower cover 05 is provided with a fifth through hole 0501 and a straight groove 0502; wherein the fifth through hole 0501 is used to install the third bolt to achieve a fixed connection between the lower cover 05 and the outer frame 02; and the straight groove 0502 is used to install the telescopic rod assembly.

[0073] like Fig.10 As shown, the first telescopic rod assembly, the second telescopic rod assembly and the third telescopic rod assembly have the same structure, and control the track wheel 06, the control wheel 08 and the permeable track 07 respectively.

[0074] Furthermore, the telescopic rod assembly includes: a control link 09, a guide rail linear slide 10 and an external motor control system.

[0075] Specifically, Fig.10 As shown, the control link 09 includes: a cross bar 0901 , a telescopic rod 0902 and a fixed platform 0903 .

[0076] Specifically, Fig.10 As shown, a plurality of straight grooves 0502 are arranged in parallel on the lower cover 05, and a fixed platform 0903 is installed in the straight groove 0502. The fixed platform 0903 passes through the straight groove 0502, and one end of the fixed platform 0903 is fixedly connected to the telescopic rod 0902, and the other end is fixedly connected to the slide 1003 on the guide rail linear slide 10. The telescopic rod 0902 is arranged on both sides of the cross bar 0901, and forms a door-type structure with the cross bar 0901; the upper end of the telescopic rod 0902 is fixedly connected to the cross bar 0901, and the lower end is fixedly connected to the fixed platform 0903; when the fixed platform 0903 slides up and down along the straight groove 0502 driven by the guide rail linear slide 10 and the external motor control system, it can drive the cross bar 0901 to move up and down, and then drive the track wheel 06, the control wheel 08 or the permeable track 07 to move.

[0077] Furthermore, in order to ensure the sealing of the water-permeable track 07 to the inner wall 04, multiple sets of slide grooves are set on the inner side surface of the inner wall 04, and the side of the telescopic rod 0902 fits with the slide groove. When the guide rail linear slide 10 drives the telescopic rod 0902 to move up and down, the telescopic rod 0902 slides in the slide groove, and at the same time, the side of the water-permeable track 07 fits with the inner surface of the inner wall 04.

[0078] Specifically, Fig.10 As shown, multiple groups of telescopic rod assemblies are fixedly arranged on the lower cover 05; the two groups on both sides are the first telescopic rod assemblies, the middle is the second telescopic rod assembly, and the others are the third telescopic rod assemblies. The track wheel 06 is rotatably mounted on the cross bar 0901 of the control link 09 of the first telescopic rod assembly, and the track wheel 06 is sleeved on the cross bar 0901 and can rotate relatively. When the telescopic rod 0902 drives the track wheel 06 to move up and down, the track wheel 06 can rotate around the cross bar 0901, and at the same time drive the permeable track 07 to move and rotate.

[0079] Specifically, the control wheel 08 is rotatably mounted on the control link 09 of the second telescopic rod assembly in the middle, and the installation method is the same as that of the track wheel 06; after the position and shape of the permeable track 07 are adjusted, the control wheel 08 moves downward to tighten the permeable track 07, such as Figure 2 shown.

[0080] Specifically, the third telescopic rod assembly is provided with a plurality of control links 09, and the crossbar 0901 of the control link 09 passes through the gap 0703 of the water-permeable track 07. When the crossbar 0901 moves up and down, the shape of the water-permeable track 07 can be adjusted, such as Figure 2 shown.

[0081] Specifically, the guide rail linear slide 10 is connected to the outer side of the fixed platform 0903 and controls the displacement of the control link 09 .

[0082] like Fig.11 As shown, the guide rail linear slide 10 includes: a motor 1001, a guide rail 1002 and a slide 1003; the motor 1001 is a linear stepping motor capable of outputting linear displacement; the slide 1003 is mounted on the guide rail 1002 and can slide relative to the guide rail 1002; the motor 1001 enables the slide 1003 to perform precise linear motion on the guide rail 1002.

[0083] Furthermore, there is a corresponding second threaded hole 1004 on the slide 1003, which can be fixedly connected to the fixed platform 0903 of the control link 09 by screws.

[0084] Furthermore, the motor 1001 may also be replaced by a linear displacement output mechanism such as a cylinder or a hydraulic cylinder.

[0085] Specifically, the guide rail linear slide 10 is arranged below the control link 09. When the motor 1001 drives the slide 1003 to slide up and down along the guide rail 1002, the slide 1003 can drive the control link 09 to move up and down, thereby driving the track wheel 06 and the control wheel 08 to move or the permeable track 07 to deform. The external motor control system controls the control link 09, the track wheel 06, the control wheel 08 and the permeable track 07 by controlling the guide rail linear slide 10. The soil dynamic deformation control component controls the deformation of the experimental soil by controlling the deformation of the permeable track 07.

[0086] In a specific embodiment of the present invention, Figure 8 As shown, the track wheel 06 is provided with a toothed structure 0601 to cooperate with the movement of the water-permeable track 07, and a sixth through hole 0602 is provided in the middle, and the control link 09 passes through the sixth through hole 0602 to fix the track wheel 06. The track wheel 06 plays a role in controlling the shape of the two ends of the water-permeable track 07. The control wheel 08 has the same structure as the track wheel 06 and tensions the water-permeable track 07.

[0087] Furthermore, a supporting structural steel 11 is provided on the inner side of the inner wall 04. The supporting structural steel 11 is fixedly connected to the control link 09 of the first telescopic rod assembly, and when the control link 09 drives the control wheel 08 to move, the supporting structural steel 11 also moves synchronously.

[0088] Specifically, Fig.12 As shown, the supporting structure steel 11 includes: a first supporting plate 1101, a second supporting plate 1102 and a fixing structure 1103

[0089] Among them, the second support plate 1102 is in contact with the inner side of the inner wall 04 to support and limit the inner wall 04; the first support plate 1101 is perpendicular to the second support plate 102, and the end of the first support plate 1101 is in contact with the permeable track 07 to block the gap between the permeable track 07 and the inner wall 04, so as to support and limit the experimental soil. Figure 1 The fixed structure 1103 is fixedly connected to the crossbar 0901 of the first telescopic rod assembly through a connecting piece, so that when the track wheels 06 on both sides move up and down, the supporting structure steel 11 also moves synchronously.

[0090] During implementation, the cross bar 0901 of the first telescopic rod assembly passes through the track wheel 06 to control the movement of the track wheel 06, the track wheel 06 is rotatably installed on the cross bar 0901, and the two ends of the cross bar 0901 are fixedly connected to the supporting structural steel 11 through connecting pieces; the track wheel 06 and the supporting structural steel 11 move synchronously, and the control link 09 of the second telescopic rod assembly can pass through the control wheel 08 to control the movement of the control wheel 08; the control link 09 of the third telescopic rod assembly is embedded between the permeable plate and the structural track of the permeable track 07, driving the permeable track 07 to deform; the guide rail linear slide 10 controls the up and down displacement of multiple groups of control links 09 to achieve control of the track wheel 06, the control wheel 08 and the permeable track 07.

[0091] like Figure 2 As shown, the dynamic change process is to control the motor through the external motor control system to drive the permeable track 07 to perform static or slow dynamic deformation according to the experimental requirements.

[0092] In order to realize the seepage simulation of the experimental soil, the present invention also includes: an external confining pressure generating device, an external seepage generating device, an external motor control system and a seepage water analysis device.

[0093] The seepage water collection and analysis device is placed below the permeable track 07 and is arranged in the bottom opening of the lower cover 05; the seepage water can be analyzed in real time by weighing, current analysis and the like.

[0094] During implementation, water is injected into the confining pressure cavity between the inner wall 04 and the outer frame 02 through an external confining pressure generating device to control the size of the confining pressure borne by the experimental soil; water is injected into the equalizing pressure groove 0303 through an external seepage generating device, and infiltrates into the experimental soil through the seepage holes 0304 to perform seepage simulation; further, when performing seepage simulation on the experimental soil, the movement of multiple sets of guide rail linear slides 10 is controlled by an external motor control system, thereby changing the position and shape of the permeable crawler 07, and dynamically controlling the deformation of the experimental soil, thereby realizing dynamic seepage simulation of the deformed soil.

[0095] Compared with the prior art, the technical solution provided by this embodiment has at least one of the following beneficial effects:

[0096] 1. The dynamic deformation soil seepage simulation device of the present invention seals and supports the experimental soil through the pad 03, the inner wall 04, the supporting structure steel 11, the connecting rod, etc., to prevent the confining pressure liquid from penetrating into the experimental soil and interfering with the experiment.

[0097] 2. The dynamic deformation soil seepage simulation device of the present invention divides the confining pressure control system into four mutually independent and sealed partitions through the baffle 12, the pad 03, the inner wall 04, the outer frame 02 and the upper cover 01, and can control the surrounding pressure of the experimental soil body separately through the external confining pressure generating device according to needs.

[0098] 3. The dynamic deformation soil seepage simulation device of the present invention is connected with the pressure equalization slot 0303 on the pad 03 through the seepage inlet hole 0103 on the upper cover 01, and the pressure equalization slot 0303 can provide a stable seepage pressure. The seepage liquid enters the experimental soil through the multiple seepage holes 0304 on the pressure equalization slot 0303, realizing a uniform and stable osmotic pressure effect on the experimental soil.

[0099] 4. The dynamic deformation soil seepage simulation device of the present invention can control the deformation movement of the permeable track 07 through the soil dynamic deformation control part composed of the lower cover 05, the guide rail linear slide 10, the control connecting rod 09, the permeable track 07, the supporting structure steel 11, the track wheel 06, the control wheel 08 and the external motor control system, so as to generate a void layer in the bottom layer before or during the soil sample seepage test, so as to simulate the influence of mining on the change of the stratum and realize the seepage simulation experiment of the dynamically deformed soil.

[0100] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A dynamic deformation soil seepage simulation device, characterized in that: include: An experimental soil body, a confining pressure control assembly, a seepage control assembly, and a soil body dynamic deformation control mechanism; wherein the confining pressure control assembly is a cylindrical structure, and the experimental soil body is arranged inside the confining pressure control assembly; the soil body dynamic deformation control mechanism is arranged below the experimental soil body, and is used to control the deformation of the experimental soil body; the seepage control assembly is arranged above the experimental soil body, and is fixedly connected to the confining pressure control assembly; the seepage control assembly can allow liquid water to penetrate into the experimental soil body; The soil dynamic deformation control mechanism comprises: track wheels (06) and a water-permeable track (07); The soil dynamic deformation control mechanism further comprises a control wheel (08); the control wheel (08) is arranged between the two track wheels (06); The track wheels (06) are provided with two, and the heights of the two track wheels (06) are independently controlled by two sets of telescopic rod assemblies; the permeable track (07) is sleeved on the outside of the two track wheels (06), and the permeable track (07) is used to support the experimental soil; The telescopic rod assembly comprises: a control link (09), a guide rail linear slide (10) and an external motor control system; the control link (09) comprises: a cross bar (0901), a telescopic rod (0902) and a fixed platform (0903); the telescopic rod (0902) is arranged on both sides of the cross bar (0901) and forms a door-type structure with the cross bar (0901); the upper end of the telescopic rod (0902) is fixedly connected to the cross bar (0901), and the lower end is fixedly connected to the fixed platform (0903); when the fixed platform (0903) slides down driven by the guide rail linear slide (10) and the external motor control system, it can drive the cross bar (0901) to move up and down, thereby driving the track wheel (06), the control wheel (08) or the permeable track (07) to move; Multiple groups of telescopic rod assemblies are fixedly arranged on the lower cover (05); the two groups on both sides are the first telescopic rod assemblies, the middle is the second telescopic rod assembly, and the others are the third telescopic rod assemblies; The track wheel (06) is driven to move via the first telescopic rod assembly; the control wheel (08) is driven to move via the second telescopic rod assembly; the third telescopic rod assembly is connected to the water-permeable track (07) and is used to drive the water-permeable track (07) to deform; After the position and shape of the water-permeable crawler (07) are adjusted, the control wheel (08) moves downward to tension the water-permeable crawler (07); The water-permeable crawler (07) is annular and has a double-layer structure; The inner layer of the permeable track (07) is a steel structure track (0701) coated with a hydrophobic material coating, and the steel structure track (0701) can cooperate with the track wheel (06) and the control wheel (08) to move; the outer layer is a loose permeable plate (0702) coated with a hydrophobic material coating, and the upper surface of the loose permeable plate (0702) is in contact with the experimental soil; a plurality of gaps (0703) are provided between the steel structure track (0701) and the loose permeable plate (0702), and a control connecting rod (09) is installed in the gap (0703), so that the control connecting rod (09) can be connected to the permeable track (07), thereby driving the permeable track (07) to deform and realize the seepage simulation of the deformed soil.

2. The dynamic deformation soil seepage simulation device according to claim 1, characterized in that: The seepage control assembly comprises: an upper cover (01) and a pad (03); the pad (03) is arranged between the upper cover (01) and the experimental soil.

3. The dynamic deformation soil seepage simulation device according to claim 2, characterized in that: The confining pressure control component comprises: an outer frame (02) and an inner wall (04); the inner wall (04) is arranged inside the outer frame (02) and forms a confining pressure cavity with the outer frame (02).

4. The dynamic deformation soil seepage simulation device according to claim 3, characterized in that: The telescopic rod assembly is arranged on the lower cover (05); and the bottom of the outer frame (02) is fixedly connected to the lower cover (05).

5. The dynamic deformation soil seepage simulation device according to claim 4, characterized in that: Supporting structural steel (11) is also provided on the inner side of the inner wall (04).

6. The dynamic deformation soil seepage simulation device according to claim 4 or 5, characterized in that: The outer frame (02) and the inner wall (04) are both rectangular cylindrical structures.

7. The dynamic deformation soil seepage simulation device according to claim 6, characterized in that: Four baffles (12) are evenly arranged between the outer frame (02) and the inner wall (04), and the four baffles (12) divide the confining pressure cavity into four side cavities.

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