Three-dimensional cross fracture simulation structure, grouting test device and test method

Abstract

The invention belongs to the technical field of slurry diffusion test equipment, and particularly discloses a three-dimensional cross fracture simulation structure, a grouting test device and a test method.The three-dimensional cross fracture simulation structure comprises a main fracture structure and a branch fracture structure, the main fracture structure comprises first plate bodies and connecting pieces, a first fracture is formed between the first plate bodies, and a second fracture is formed between the first plate bodies; the connecting piece is used for connecting the two first plate bodies and the branch fissure structure and comprises a disc and two second plate bodies, the disc comprises two semicircular discs, the two second plate bodies are oppositely distributed and hinged to the two semicircular discs in a one-to-one correspondence mode, a second fissure is formed between the second plate bodies, and the second fissure and the first fissure form a three-dimensional crossed fissure. The grouting test device comprises a grouting system, a water supply system, a collection system, a monitoring control system and a three-dimensional cross fracture simulation structure. According to the grouting test method, the grouting test device is used for testing. According to the invention, complex cross cracks in a three-dimensional space can be effectively simulated.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of slurry diffusion test equipment, and particularly relates to a three-dimensional cross fissure simulation structure, a grouting test device and a test method. BACKGROUND

[0002] Grouting technology is widely used in the fields of geology, water conservancy, civil engineering and the like, and field grouting is a concealed underground project, and the slurry diffusion law is difficult to determine, and the slurry diffusion law and mechanism are mostly determined through indoor grouting tests.

[0003] The indoor grouting test is to simulate the field fissure condition through indoor visual materials, and then simulate the diffusion mechanism and diffusion law of the slurry under the action of dynamic water and grouting pressure, which can be used to guide the field construction.

[0004] In the existing test equipment for studying the slurry diffusion law, the fissure simulation structure is mostly used to study the diffusion behavior of the slurry in fissure or pore medium, and the fissure simulation structure is single in structure and is only a one-way fissure. For the complex cross fissure in three-dimensional space, the existing fissure simulation structure cannot simulate the slurry diffusion condition. SUMMARY

[0005] In view of the above problems, the purpose of the present application is to provide a three-dimensional cross fissure simulation structure, a grouting test device and a test method.

[0006] The technical scheme of the present application is: a three-dimensional cross fissure simulation structure, comprising a main fissure structure and a branch fissure structure.

[0007] The main fissure structure comprises a first plate body and a connecting piece, the first plate body has two, the two first plate bodies are distributed oppositely, and a first fissure is formed between the first plate bodies; one of the first plate bodies is provided with a circular opening, the circular opening is communicated with the first fissure; the first plate body is provided with a first clamping groove at the through hole, and the first clamping groove is distributed circumferentially along the center of the circular opening; the connecting piece is used to connect the two first plate bodies.

[0008] The branch fissure structure comprises a disc and a second plate body, the disc comprises two half discs, the two half discs are oppositely distributed and clamped in the first clamping groove, and the half disc can rotate around the center of the circular opening; the second plate body has two, the two second plate bodies are oppositely distributed and hingedly connected on the two half discs one by one, a second fissure is formed between the second plate bodies, the second fissure is communicated with the circular opening, and the second fissure and the first fissure form a three-dimensional cross fissure.

[0009] Further, the connecting piece has a plurality of connecting pieces, and the plurality of connecting pieces are uniformly distributed in a matrix between the two first plate bodies.

[0010] Further, each of the connecting members comprises a telescopic rod and a ball hinge, the telescopic rod has two ends, each of which is arranged on one of the two first plate bodies, and the telescopic rod has a telescopic end; the ball hinge is used to connect the telescopic ends of the two telescopic rods, and the telescopic ends of the telescopic rods are rotatably connected to the ball hinge.

[0011] Further, the main crack structure further comprises a third plate body, which is mounted on one of the first plate bodies and located in the first crack, and the third plate body is provided with a notch on the surface close to the other first plate body, and the notch is used to increase the surface roughness of the first plate body.

[0012] Further, the first plate body is provided with a second clamping groove, and the third plate body is clamped in the second clamping groove.

[0013] Further, the shell is a three-dimensional structure formed by splicing a plurality of fourth plate bodies, and the three-dimensional structure has a mounting cavity; the first plate body and the second plate body are located in the mounting cavity and are mounted on the fourth plate body by the telescopic supporting rod.

[0014] Further, the telescopic supporting rod comprises a telescopic rod and a suction cup, the telescopic rod has two second ball hinges at its two ends; the suction cup has a suction end for fixing on the first plate body or the second plate body or the fourth plate body, and the suction cup is provided with a ball groove corresponding to the ball hinge, and the ball hinge is clamped in the ball groove.

[0015] Further, the first plate body, the disc, the second plate body and the fourth plate body are all made of transparent acrylic plate.

[0016] The grouting test device comprises a grouting system, a water supply system, a collection system and a monitoring and control system, and further comprises the three-dimensional cross crack simulation structure.

[0017] The grouting system has a grouting end, which is communicated with the first crack and used for grouting into the first crack; the water supply system has a water supply end, which is communicated with the first crack and used for water injection into the first crack; the collection system has a collection end, which is communicated with the first crack and the second crack respectively; the monitoring and control system comprises a water pressure sensor, a pressure sensor, an image acquisition module and a control module, the water pressure sensor is used to collect water pressure data in the first crack and the second crack; the pressure sensor is used to collect pressure data in the first crack and the second crack; the image acquisition module is used to collect image data in the first crack and the second crack; the control module is connected with the water pressure sensor, the pressure sensor and the image acquisition module, and is used to receive the water pressure data, the pressure data and the image data.

[0018] The grouting test method is performed by using the grouting test device, and specifically comprises the following steps: Water is injected into one end of the first crack by using the water supply system until the water flow inside the first crack and the second crack is constant; then grouting is injected into one end of the first crack by using the grouting system.

[0019] In this process, water pressure data, pressure data and image data are collected in real time based on the water pressure sensor, the pressure sensor and the image acquisition module, and flow data of the other end of the first crack and the end of the second crack away from the first crack are recorded; the flow data is calculated by the ratio of the total mass of the slurry collected by the collection end of the collection system to the collection time.

[0020] Compared with the prior art, the beneficial effects of the present application are that: The present application can effectively simulate complex cross cracks in three-dimensional space, solving the problem that the existing crack simulation structure can only simulate one-way cracks and cannot simulate three-dimensional cross cracks, and providing a reliable test carrier for studying the diffusion law and mechanism of slurry in three-dimensional cross cracks.

[0021] The semicircular disc can rotate around the center of the circular opening, thereby adjusting the angle between the second crack and the first crack, realizing the simulation of three-dimensional cross cracks with different angles, and helping to comprehensively study the diffusion behavior of slurry in three-dimensional cross cracks with different angles, improving the comprehensiveness and accuracy of the test.

[0022] The connecting piece is used to connect two first plate bodies, and by adjusting the connecting piece, the distance between the two first plate bodies can be changed, that is, the width of the first crack is adjusted; at the same time, the second plate body is hinged on the semicircular disc, and by adjusting the hinge structure, the distance between the two second plate bodies can be changed, that is, the width of the second crack is adjusted. Therefore, this structure can simulate three-dimensional cross cracks with different widths, further widening the test range, and can deeply study the influence of crack width on slurry diffusion, providing more test data support for more accurate inversion and guidance of field construction.

[0023] The overall structure design is ingenious, the connection mode of each component is simple and reliable, and the assembly, disassembly and adjustment are convenient and easy to operate, which can meet the various needs of indoor grouting test and improve the test efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of embodiment 1 of the present application; Figure 2 is a schematic diagram of the local structure of the main crack structure and the branch crack structure of the present application; Figure 3 is a schematic diagram of the connection structure of the main crack structure and the branch crack structure of the present application; Figure 4 is a schematic diagram of the structure of the branch crack structure of the present application; Figure 5 is a schematic diagram of the structure of the third plate body of the present application; Figure 6 This is a schematic diagram of the structure of the connector of the present invention; Figure 7 This is a schematic diagram of the telescopic support rod of the present invention; Figure 8 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention.

[0025] Among them, 1-main crack structure, 10-first crack, 11-first plate, 111-circular opening, 112-first slot, 113-second slot, 12-connector, 121-fixing nut, 122-bolt body, 123-first ball joint, 124-length adjusting bolt, 13-third plate, 130-groove, 2-support crack structure, 20-second crack, 21-disc, 210-semi-disc, 22-second plate, 3-shell, 30-fourth plate, 300-installation cavity, 4-telescopic support rod, 41-telescopic rod, 410-second ball joint, 42-suction cup, 51-grouting system, 52-water supply system, 53-collection system, 54-monitoring and control system. Detailed Implementation

[0026] The following is combined with Figures 1 to 8 The specific embodiments of the present invention will be described in detail below. In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0027] 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; in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0028] It should be noted that the circuit connections involved in this invention all adopt conventional circuit connection methods and do not involve any innovation.

[0029] Example 1 like Figure 1 The diagram shows a three-dimensional cross-crack simulation structure, including a main crack structure 1 and a branch crack structure 2.

[0030] like Figure 1 , Figure 2 , Figure 3As shown in the drawings, the main crack structure 1 comprises a first plate body 11 and a connecting piece 12, the first plate body 11 has two, the two first plate bodies 11 are oppositely distributed, and a first crack 10 is formed between the first plate bodies 11; one of the first plate bodies 11 is provided with a circular opening 111, the circular opening 111 is communicated with the first crack 10; the first plate body 11 is provided with a first clamping groove 112 at the through hole 111, and the first clamping groove 112 is distributed along the circumcenter of the circular opening 111; the connecting piece 12 is used for connecting the two first plate bodies 11.

[0031] As shown in the drawings, Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown in the drawings, the branch crack structure 2 comprises a disc 21 and a second plate body 22, the disc 21 comprises two half discs 210, the two half discs 210 are oppositely distributed, and are clamped in the first clamping groove 112, and the half disc 210 can rotate around the circumcenter of the circular opening 111; the second plate body 22 has two, the two second plate bodies 22 are oppositely distributed, and are hingedly connected to the two half discs 210 one by one, and a second crack 20 is formed between the second plate bodies 22, the second crack 20 is communicated with the circular opening 111, and the second crack 20 and the first crack 10 form a three-dimensional cross crack.

[0032] Preferably, the connecting piece 12 has a plurality of, and the plurality of connecting pieces 12 are uniformly distributed in a matrix between the two first plate bodies 11.

[0033] Preferably, as shown in the drawings, Figure 6 Each connecting piece 12 comprises a telescopic rod 121 and a spherical hinge 122, the telescopic rod 121 has two, and is provided on the two first plate bodies 11 one by one, and the telescopic rod 121 has a telescopic end; the spherical hinge 122 is used for connecting the telescopic ends of the two telescopic rods 121, and the telescopic end of the telescopic rod 121 is rotationally connected to the spherical hinge 122. It should be noted that, as shown in the drawings, Figure 6 The telescopic rod 121 of the embodiment adopts a threaded rod, the first plate body 11 is provided with a nut corresponding to the threaded rod, the threaded rod is threadedly connected to the nut, and the end portion of the threaded rod between the two first plate bodies 11 is connected to the spherical hinge 122.

[0034] Preferably, as shown in the drawings, Figure 2 , Figure 3 , Figure 5 The main crack structure 1 further comprises a third plate body 13, the third plate body 13 is installed on one of the first plate bodies 11 and located in the first crack 10, and the third plate body 13 is provided with a notch 130 on the surface close to the other first plate body 11, and the notch 130 is used for increasing the surface roughness of the first plate body 11.

[0035] Preferably, as shown in the drawings, Figure 2 , Figure 3As shown, the first plate body 11 is provided with a second clamping groove 113, and the third plate body 13 is clamped in the second clamping groove 113.

[0036] Preferably, as shown in the drawings, Figure 1 As shown, the housing 3 is a three-dimensional structure formed by splicing a plurality of fourth plate bodies 30, and the three-dimensional structure has a mounting cavity 300; the first plate body 11 and the second plate body 22 are both located in the mounting cavity 300 and are both mounted on the fourth plate body 30 through the telescopic support rod 4.

[0037] Preferably, as shown in the drawings, the telescopic support rod 4 includes a telescopic rod 41 and a suction cup 42. The telescopic rod 41 is provided with a second ball hinge 410 at both ends; the suction cup 42 has a suction end for fixing on the first plate body 11 or the second plate body 22 or the fourth plate body 30, and the suction cup 42 is provided with a ball groove corresponding to the ball hinge 410, and the ball hinge 410 is clamped in the ball groove.

[0038] Preferably, the first plate body 11, the disc 21, the second plate body 22, and the fourth plate body 30 are all made of transparent acrylic plate.

[0039] Embodiment 2 As shown in the drawings, Figure 7 A grouting test device, including a grouting system 51, a water supply system 52, a collection system 53, and a monitoring control system 54, and the three-dimensional cross fissure simulation structure proposed in embodiment 1.

[0040] The grouting system 51 has a grouting end, which is communicated with the first fissure 10 and is used for grouting into the first fissure 10; the water supply system 52 has a water supply end, which is communicated with the first fissure 10 and is used for water injection into the first fissure 10; the collection system 53 has a collection end, which is respectively communicated with the first fissure 10 and the second fissure 20; the monitoring control system 54 includes a water pressure sensor, a pressure sensor, an image acquisition module, and a control module; the water pressure sensor is used for collecting water pressure data in the first fissure 10 and the second fissure 20; the pressure sensor is used for collecting pressure data in the first fissure 10 and the second fissure 20; the image acquisition module is used for collecting image data in the first fissure 10 and the second fissure 20; the control module is connected with the water pressure sensor, the pressure sensor, and the image acquisition module, and is used for receiving the water pressure data, the pressure data, and the image data.

[0041] It should be noted that, as shown in the drawings, Figure 8 The grouting system 51 includes a grouting tank and an air compressor; the grouting tank is used for storing grout, and the outlet end of the grouting tank serves as the grouting end and is communicated with the first fissure 10, and is used for grouting into the first fissure 10; the inlet end of the grouting tank is communicated with the air compressor, and the air compressor introduces high-pressure air into the grouting tank to inject grout into the first fissure 10.

[0042] The water supply system 52 includes a water storage tank and a flow control system. The water storage tank is used to store water and is connected to the first crack 10 through the flow control system. The water storage tank is used to inject water into the first crack 10.

[0043] The collection system 53 is a container placed on a weighing device, and there are two sets, which are respectively connected to the first crack 10 and the second crack 20.

[0044] A grouting test method, using the grouting test device proposed in this embodiment, specifically includes the following steps: Water is injected into one end of the first crack 10 using the water supply system 52 until the water flow inside the first crack 10 and the second crack 20 is constant; then grout is injected into one end of the first crack 10 using the grouting system 51.

[0045] During this process, water pressure data, pressure data, and image data are collected in real time based on water pressure sensors, pressure sensors, and image acquisition modules. Flow data at the other end of the first crack 10 and the end of the second crack 20 away from the first crack 10 are also recorded. The water pressure data, pressure data, image data, and flow data reflect the grout diffusion mechanism and diffusion law during the three-dimensional crack grouting process.

[0046] Among them, such as Figure 8 As shown, the collection end of the collection system 53 is connected to the other end of the first crack 10 and the end of the second crack 20 away from the first crack 10, respectively. The flow rate data can be calculated by the ratio of the total mass of slurry collected by the collection end of the collection system 53 to the collection time.

[0047] The specific models of the above electronic components are not specifically specified; any commercially available ordinary products can be selected, as long as they can meet the usage requirements of this invention.

[0048] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and do not limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the protection scope of the present invention.

Claims

1. A three-dimensional cross- fracture simulation structure, characterized by, The utility model relates to a kind of main crack structure and branch crack structure, comprising: Main crack structure (1), comprising: first plate body (11), there are two, two first plate body (11) are oppositely distributed, and first crack (10) is formed between first plate body (11);One of first plate body (11) is provided with circular opening (111), and circular opening (111) is communicated with first crack (10);First plate body (11) is provided with first clamping groove (112) at through hole (111), and first clamping groove (112) is distributed along the circumference of the center of circular opening (111);Connecting piece (12) is used to connect two first plate body (11); Branch crack structure (2), comprising: disc (21), comprising two semicircular discs (210), two semicircular discs (210) are oppositely distributed, and are clamped in first clamping groove (112), and semicircular disc (210) can rotate around the center of circular opening (111);Second plate body (22), there are two, two second plate body (22) are oppositely distributed, and are hingedly connected on two semicircular discs (210) one by one, and second crack (20) is formed between second plate body (22), and second crack (20) is communicated with circular opening (111), and second crack (20) and first crack (10) form three-dimensional cross crack.

2. A three-dimensional cross- fissure analog structure as claimed in claim 1, wherein, The connecting piece (12) has a plurality of, and the plurality of connecting pieces (12) are uniformly distributed in the matrix between the two first plate bodies (11).

3. A three-dimensional cross- fissure analogue structure as claimed in claim 2, c h a r a c t e r i s e d in that Each connecting piece (12) comprises: Telescopic rod (121), two, respectively one by one correspondingly arranged on two first plate bodies (11), telescopic rod (121) has telescopic end; Ball hinge (122) is used to connect the telescopic end of two telescopic rods (121), and the telescopic end of telescopic rod (121) is rotatably connected on ball hinge (122).

4. A three-dimensional cross- fissure analog structure as in claim 1, wherein, The main crack structure (1) further comprises a third plate body (13), the third plate body (13) is installed on one of the first plate bodies (11) and located in the first crack (10), the third plate body (13) is provided with a notch (130) on the surface close to the other first plate body (11), and the notch (130) is used to increase the surface roughness of the first plate body (11).

5. A three-dimensional cross- fissure analogue structure as claimed in claim 4, c h a r a c t e r i s e d in that The first plate body (11) is provided with a second clamping groove (113), and the third plate body (13) is clamped in the second clamping groove (113).

6. A three-dimensional cross- fissure analog structure as described in claim 1 wherein, Further comprising a housing (3), the housing (3) is a three-dimensional structure spliced by a plurality of fourth plate bodies (30), and the three-dimensional structure has a mounting cavity (300); The first plate body (11) and the second plate body (22) are located in the mounting cavity (300), and are installed on the fourth plate body (30) by the telescopic support rod (4).

7. A three-dimensional cross- fissure analogue structure as claimed in claim 6, c h a r a c t e r i s e d in that The telescopic support rod (4) comprises: Telescopic rod (41), two ends are provided with second ball hinge (410); Sucker (42) has an adsorption end, and the adsorption end is used for fixing on the first plate body (11) or the second plate body (22) or the fourth plate body (30), and the sucker (42) is provided with a ball groove corresponding to the ball hinge (410), and the ball hinge (410) is clamped in the ball groove.

8. A three-dimensional cross- fissure analogue structure as claimed in claim 7, c h a r a c t e r i s e d in that The first plate body (11), the disc (21), the second plate body (22) and the fourth plate body (30) are all made of transparent acrylic plate.

9. A grouting test device comprising a grouting system (51), a water supply system (52), a collection system (53) and a monitoring control system (54), characterized in that, The three-dimensional cross fissure simulation structure according to any one of claims 1-8 is also included. The grouting system (51) has a grouting end, which is communicated with the first fissure (10) and used for grouting into the first fissure (10); The water supply system (52) has a water supply end, which is communicated with the first fissure (10) and used for water injection into the first fissure (10); The collection system (53) has a collection end, which is respectively communicated with the first fissure (10) and the second fissure (20); The monitoring control system (54) comprises: a water pressure sensor, which is used for collecting water pressure data in the first fissure (10) and the second fissure (20); A pressure sensor is used for collecting pressure data in the first fissure (10) and the second fissure (20); an image acquisition module is used for collecting image data in the first fissure (10) and the second fissure (20); a control module is connected with the water pressure sensor, the pressure sensor and the image acquisition module, and is used for receiving the water pressure data, the pressure data and the image data.

10. A method of grouting test, characterized by, The grouting test device according to claim 9 is used for testing, and the testing specifically comprises the following steps: The water supply system (52) is used for water injection into one end of the first fissure (10) until the water flow in the first fissure (10) and the second fissure (20) is constant; and then the grouting system (51) is used for grouting into one end of the first fissure (10); During the process, the water pressure data, the pressure data and the image data are collected in real time based on the water pressure sensor, the pressure sensor and the image acquisition module, and the flow data of the other end of the first fissure (10) and the end of the second fissure (20) away from the first fissure (10) are recorded; the flow data is calculated by the ratio of the total mass of the slurry collected by the collection end of the collection system (53) to the collection time length.

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