Impermeable curtain experiment preparation device
Through the combination of the constant pressure grouting system and the data acquisition system, the problem of inaccurate grouting materials and pressure is solved, and the precise preparation and quality control of anti-seepage curtain body is realized, which improves engineering efficiency.
Patent Information
- Application Number
- CN202421418675.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-06-20
AI Technical Summary
In the prior art, when preparing anti-seepage curtain body experiments, the grouting materials are limited, the grouting pressure and process are inaccurate, and there is a lack of observation and recording, resulting in few types of anti-seepage curtain bodies and high randomness, which cannot provide reference for subsequent preparation.
The device including a constant pressure grouting system, a curtain forming system and a data acquisition system is adopted to achieve accurate control and recording of grouting materials, pressure and diffusion conditions through constant pressure grouting, stirrer adjustment, transparent observation area and data detection.
The free selection of grouting materials, precise control of grouting pressure and process are achieved, and the diffusion of slurry can be observed, providing reference for subsequent preparation, and improving the quality and engineering efficiency of the anti-seepage curtain body.
Smart Images
Figure CN223139112U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an anti-seepage curtain, in particular to an experimental preparation device for an anti-seepage curtain body. Background Art
[0002] Under the operating environment of high hydraulic gradient, grouting is generally used to reinforce and prevent seepage of the surrounding rock of the diversion tunnel in the drainage structure of the pumped-storage power station's water diversion and power generation system, so as to form an engineering barrier for groundwater in the surrounding rock, that is, an anti-seepage curtain. Although the anti-seepage curtain has received high attention in the exploration, design, construction and operation stages of the pumped-storage power station, phenomena such as leakage and abnormal seepage pressure in the diversion tunnel still occur frequently in the pumped-storage power station.
[0003] In order to fundamentally improve the service performance of the anti-seepage curtain, analysis should be carried out before the anti-seepage curtain is put into service to ensure that the initial anti-seepage curtain can achieve the best water-blocking performance, that is, it is necessary to conduct experiments on each group of anti-seepage curtain bodies in the early stage to select the best anti-seepage curtain body.
[0004] Currently, when conducting experiments on anti-seepage curtain bodies, the most troublesome thing is to prepare the anti-seepage curtain bodies. The grouting materials are often restricted, and the types of anti-seepage curtain bodies obtained are few. Moreover, the grouting pressure and the grouting process are not precisely controlled, and the anti-seepage curtain bodies obtained have a high randomness. In addition, the preparation process is not observed and recorded, and it is impossible to provide a reference for the subsequent preparation process. Summary of the Utility Model
[0005] The purpose of the utility model is to provide an experimental preparation device for an anti-seepage curtain body, in which the grouting materials are not restricted, the grouting pressure and the grouting process can be precisely controlled, it can be observed and recorded whether the slurry diffuses to the side of the forming bin and the diffusion situation of the slurry in the broken rock mass, and the pressure conditions at different heights in the forming bin can be recorded.
[0006] The technical solution adopted by the utility model is as follows:
[0007] An experimental preparation device for an anti-seepage curtain body, comprising a constant-pressure grouting system, a curtain body forming system and a data acquisition system; the constant-pressure grouting system is used to provide constant-pressure grouting pressure, including a mixing bin, an air pipe and a grouting pipe. A seal cover is installed on the upper part of the mixing bin in an openable and closable manner, and a stirrer with adjustable rotation speed is arranged inside. An air inlet is arranged on the outer side of the upper part of the mixing bin, and a slurry outlet with a valve is arranged on the outer side of the lower part. One end of the air pipe is connected to the air inlet, and the other end is sequentially connected to a pressure regulating valve and an air compressor. One end of the grouting pipe is connected to the slurry outlet; the curtain body forming system is used to make the broken rock mass grout to form a curtain body, including a forming bin and a slurry discharge pipe. Grouting ports with valves are distributed on the outer side of the bottom surface of the forming bin, a filter screen is placed on the inner side of the bottom surface, a transparent observation area is provided on the side surface, and the top surface is a pressing cover that can be tightly sealed and opened. Drainage ports are distributed on the pressing cover. One end of the slurry discharge pipe is divided into multiple branches and respectively connected to the corresponding drainage ports, and the other end extends into a container, and the container is weighed by weighing equipment. The other end of the grouting pipe is divided into multiple branches and respectively connected to the corresponding grouting ports; the data acquisition system is used to record the diffusion situation of the slurry in the broken rock mass and collect the pressure and flow data during the grouting process, including a pressure detection component and a flow detection component arranged on the grouting pipe, pressure detection components distributed at different heights on the side surface of the forming bin, and a camera pointing at the observation area on the side surface of the forming bin.
[0008] Preferably, the pressure adjustment range of the air compressor is 0 - 10 MPa.
[0009] Preferably, the seal cover and the mixing bin are tightly connected by flanges and bolts and sealed by a sealing ring; the air inlet is arranged on the seal cover; the stirring blades of the stirrer are located inside the mixing bin, and the stirring shaft penetrates the seal cover in a sealed manner and is detachably connected to the power mechanism, and the power mechanism is installed on a bracket.
[0010] Furthermore, the power mechanism includes a motor and a rotation speed regulator.
[0011] Preferably, the bottom of the mixing bin is fixedly installed through a base.
[0012] Preferably, the air pipe, the grouting pipe and the slurry discharge pipe are all made of high-pressure flexible hoses. The air pipe is connected to the air inlet by thread and sealed by a sealing ring. One end of the grouting pipe is connected to the slurry outlet by thread and sealed by a sealing ring, and the other end is connected to the grouting port by thread and sealed by a sealing ring. The slurry discharge pipe is connected to the drainage port by thread and sealed by a sealing ring.
[0013] Preferably, the forming bin includes a steel frame and transparent plates. The bottom surface and one side surface of the steel frame are made of steel plates, the remaining side surfaces and the top surface are open, L-shaped brackets are distributed at each corner on the upper side of the bottom surface, and legs are distributed at each corner on the lower side of the bottom surface; the transparent plates are installed on the remaining side surfaces of the steel frame to form an observation area. The adjacent two transparent plates and between the adjacent transparent plate and the steel plate on the side surface of the steel frame are spliced at the L-shaped brackets, and the splicing position is fixed by adhesive sealant and sealed with a sealing strip; the gland is arranged on the top surface of the steel frame and sealed with an annular gasket. Pressure detector mounting holes are arranged on the steel plate on the side surface of the forming bin at different heights, and the grouting ports are distributed on the steel plate of the bottom surface of the forming bin.
[0014] Further, the transparent plate is made of acrylic board.
[0015] Preferably, the filter screen is made of stainless steel, the aperture of the filter screen is 1 mm, and the hole pitch is 1 mm.
[0016] Preferably, the pressure detector on the grouting pipe is a pressure gauge, which is connected to the grouting pipe through a tee joint; the pressure detector on the side surface of the forming bin is a digital pressure gauge, which is connected to the side surface of the forming bin by thread and sealed with a gasket; the flow detector on the grouting pipe is a clamp-on flow sensor.
[0017] The beneficial effects of the utility model are as follows:
[0018] In this device, the air compressor is used to provide pressure to grout into the forming bin through the mixing bin and the grouting pipe, replacing the grouting machine, and the grouting material is not restricted; in this device, the rotation speed of the stirrer is adjustable, the grouting pressure output by the air compressor is adjustable through the pressure regulating valve, and the pressure detector and flow detector on the grouting pipe can feedback the real-time grouting pressure and flow rate. Therefore, the grouting pressure and the grouting process can be accurately controlled; in this device, the side surface of the forming bin has a transparent observation area, so it is possible to observe whether the grout diffuses to the side surface of the forming bin and the diffusion situation of the grout in the broken rock mass. At the same time, the camera can record the diffusion situation of the grout in the broken rock mass, and the pressure detector on the side surface of the forming bin can record the pressure situation at different heights in the forming bin, which can provide reference for the subsequent preparation process; in this device, the filter screen placed on the inner side of the bottom surface of the forming bin can not only prevent the grout from quickly impacting the broken rock mass, but also filter certain impurities; in this device, the top surface of the forming bin uses a gland, which is convenient for loading the broken rock mass and taking out the curtain body; in this device, the grouting ports are distributed on the bottom surface of the forming bin and the drain ports are distributed on the gland, which can ensure the uniformity of grouting and drainage; this device can efficiently produce various curtain bodies. Through subsequent experiments on each group of curtain bodies, the compatibility of the grouting material, grouting pressure and broken rock mass can be studied, and the best grouting material, grouting pressure and broken rock mass can be determined, saving project funds and construction period and improving the project quality. Description of the Drawings
[0019] Figure 1It is a schematic structural diagram of the experimental preparation device for the anti-seepage curtain body in the embodiment of the present utility model.
[0020] Figure 2 It is an installation schematic diagram of the mixing bin and related accessories in the embodiment of the present utility model.
[0021] Figure 3 It is a schematic diagram of the forming bin in the embodiment of the present utility model. For the convenience of observation, the supporting legs are not shown.
[0022] Figure 4 It is a splicing schematic diagram between adjacent transparent plates and the side steel plates of the steel frame in the embodiment of the present utility model.
[0023] In the figure: 1 - air compressor; 2 - pressure regulating valve; 3 - air pipe; 4 - mixing bin; 5 - slurry; 6 - flow detection component; 7 - pressure detection component; 8 - grouting pipe; 9 - supporting leg; 10 - valve; 11 - filter screen; 12 - gland; 13 - slurry discharge pipe; 14 - annular gasket; 15 - fractured rock mass; 16 - forming bin; 17 - container; 18 - weighing equipment; 19 - camera; 20 - bracket; 21 - speed regulator; 22 - motor; 23 - sealing cover; 24 - bolt; 25 - flange; 26 - mixing shaft; 27 - mixing blade; 28 - base; 29 - pressure detection component installation hole; 30 - grouting port; 31 - steel plate; 32 - L-shaped bracket; 33 - transparent plate; 34 - slurry discharge port; 35 - sealant; 36 - sealing strip; 37 - air inlet; 38 - slurry outlet. Detailed implementation manners
[0024] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.
[0025] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.
[0026] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0027] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.
[0028] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0029] The features and performance of the present application will be further described in detail below in conjunction with embodiments.
[0030] Embodiment 1
[0031] This embodiment discloses an experimental preparation device for an anti-seepage curtain body, including a constant-pressure grouting system, a curtain body forming system, and a data acquisition system; wherein:
[0032] The constant-pressure grouting system is used to provide a constant-pressure grouting pressure, and includes a mixing bin 4, an air pipe 3, a grouting pipe 8, a pressure regulating valve 2, and an air compressor 1: A seal cover 23 is installed on the upper part of the mixing bin 4 in an openable and closable manner, and a stirrer with adjustable rotation speed is provided inside. An air inlet 37 is provided on the outer side of the upper part of the mixing bin 4, and a slurry outlet 38 with a valve 10 is provided on the outer side of the lower part. One end of the air pipe 3 is connected to the air inlet 37, and the other end is sequentially connected to the pressure regulating valve 2 and the air compressor 1. One end of the grouting pipe 8 is connected to the slurry outlet 38, see Figure 1 and Figure 2 ;
[0033] The curtain body forming system is used to form a curtain body by grouting broken rock mass 15, and includes a forming bin 16, a slurry discharge pipe 13, a container 17, and a weighing device 18: Grouting ports 30 with valves 10 are distributed on the outer side of the bottom surface of the forming bin 16, a filter screen 11 is placed on the inner side of the bottom surface, a transparent observation area is provided on the side surface, and the top surface is a pressing cover 12 that can be tightly sealed and opened. Drainage ports 34 are distributed on the pressing cover 12. One end of the slurry discharge pipe 13 is divided into multiple branches and respectively connected to the corresponding drainage ports 34, and the other end extends into the container 17. The container 17 is weighed by the weighing device 18. The other end of the grouting pipe 8 is divided into multiple branches and respectively connected to the corresponding grouting ports 30, see Figure 1 and Figure 3 ;
[0034] The data acquisition system is used to record the diffusion of the slurry 5 in the broken rock mass 15 and collect the pressure and flow rate data during the grouting process, including a pressure detector 7 and a flow detector 6 provided on the grouting pipe 8, pressure detectors 7 distributed at different heights on the side of the forming bin 16, and a camera 19 pointing to the observation area on the side of the forming bin 16, as shown in Figure 1 .
[0035] Regarding the air compressor 1 in the constant-pressure grouting system, in this embodiment, preferably: the pressure adjustment range of the air compressor 1 can be 0 - 10 MPa;
[0036] Regarding the mixing bin 4 and its accessories in the constant-pressure grouting system, in this embodiment, preferably: as Figure 1 and Figure 2 shown, between the sealing cover 23 and the mixing bin 4, they are tightly connected by a flange 25 and bolts 24 and sealed by a sealing ring (the sealing ring is located in the groove of the sealing cover, so it is not shown in the figure). The air inlet 37 is provided on the sealing cover 23. The mixing blades 27 of the mixer are located inside the mixing bin 4, and the mixing shaft 26 passes through the sealing cover 23 in a sealed manner and is detachably connected to the power mechanism. The power mechanism is installed on the bracket 20. The above settings make the mixing bin 4 and its accessories convenient to load and unload and have reliable sealing. Among them, the power mechanism can adopt a motor 22 and a speed regulator 21. The sealing ring can adopt nitrile rubber material, which has good sealing effect and long service life. The speed adjustment range of the mixer can be 0 - 2500 r / min, and the mixing blades 27 can adopt a three-blade spiral shape. And, the bottom of the mixing bin 4 can be fixedly installed through a base 28 to be more stable.
[0037] Regarding the air pipe 3 and the grouting pipe 8 in the constant-pressure grouting system, in this embodiment, preferably: as Figure 1 and Figure 2 shown, both the air pipe 3 and the grouting pipe 8 adopt high-pressure hoses. The air pipe 3 is connected to the air inlet 37 by threads and sealed by a sealing ring (the sealing ring is located on the inner end face of the air pipe 3, so it is not shown in the figure). One end of the grouting pipe 8 is connected to the slurry outlet 38 by threads and sealed by a sealing ring (the sealing ring is located on the inner end face of the grouting pipe 8, so it is not shown in the figure), and the other end is connected to the grouting port 30 by threads and sealed by a sealing ring (the sealing ring is located on the inner end face of the grouting pipe 8, so it is not shown in the figure). The connection is reliable and the sealing is guaranteed. Among them, the sealing ring can adopt nitrile rubber material, which has good sealing effect and long service life; the size of the grouting pipe 8 can be an inner diameter of 20 mm and an outer diameter of 32 mm.
[0038] Regarding the forming bin 16 in the curtain body forming system, in this embodiment, preferably: as Figure 1 , Figure 3 and Figure 4As shown, the forming bin 16 includes a steel frame and a transparent plate 33. The bottom surface and one side surface of the steel frame are steel plates 31, the remaining side surfaces and the top surface are open. L-shaped brackets 32 are distributed at each corner on the upper side of the bottom surface, and legs 9 are distributed at each corner on the lower side of the bottom surface. The transparent plate 33 is installed on the remaining side surfaces of the steel frame to form an observation area. The adjacent two transparent plates 33 and between the adjacent transparent plate 33 and the steel plate 31 on the side surface of the steel frame are spliced at the L-shaped brackets 32. The splicing position is adhesively fixed with a sealant 35 and sealed with a sealing strip 36. The gland 12 is arranged on the top surface of the steel frame and sealed with an annular gasket 14. Pressure detector mounting holes 29 are arranged on the steel plate 31 on the side surface of the steel frame at different heights. The grouting ports 30 are distributed on the steel plate 31 on the bottom surface of the steel frame. The above settings make the installation of the forming bin 16 convenient, and it can withstand a large internal pressure and is convenient for observation. Among them, the transparent plate 33 can be made of 10-mm thick acrylic plate; the annular gasket 14 and the sealing strip 36 can be made of nitrile rubber material, with good sealing effect and long service life.
[0039] Regarding the filter screen 11 in the curtain body forming system, in this embodiment, preferably: the filter screen 11 is made of stainless steel, the aperture of the filter screen 11 is 1 mm, and the hole pitch is 1 mm.
[0040] Regarding the slurry discharge pipe 13 in the curtain body forming system, in this embodiment, preferably: the slurry discharge pipe 13 is a high-pressure hose. The slurry discharge pipe 13 is connected to the slurry discharge port 34 by a thread and sealed with a sealing ring (the sealing ring is located on the inner end surface of the slurry discharge pipe 13), with reliable connection and guaranteed sealing. Among them, the size of the slurry discharge pipe 13 can be an inner diameter of 3 mm and an outer diameter of 5 m; the sealing ring can be made of nitrile rubber material, with good sealing effect and long service life.
[0041] Regarding the weighing device 18 in the curtain body forming system, in this embodiment, preferably: the weighing device 18 is an electronic scale.
[0042] Regarding the data acquisition system, in this embodiment, preferably: the pressure detector 7 on the grouting pipe 8 is a pressure gauge, which is connected to the grouting pipe 8 through a tee joint; the pressure detector 7 on the side surface of the forming bin 14 is a digital pressure gauge, which is connected to the side surface of the forming bin 16 by a thread and sealed with a gasket; the flow detector 6 on the grouting pipe 8 is a clamp-on flow sensor, which is convenient for installation and will not cause pollution and pressure loss to the pipeline. The flow detector 6 and each pressure detector 7 can directly observe the displayed data manually on site, or upload the data to the display screen in the background, or remotely observe the displayed data using a camera.
[0043] In this device: The air compressor 1 is used to provide pressure to inject slurry into the forming chamber 16 through the mixing chamber 4 and the grouting pipe 8, replacing the grouting machine, and the grouting material is not restricted; the rotation speed of the stirrer is adjustable, the grouting pressure output by the air compressor 1 is adjustable through the pressure regulating valve 2, and the pressure detection component 7 and the flow detection component 6 on the grouting pipe 8 can feedback the real-time grouting pressure and flow rate. Therefore, the grouting pressure and the grouting process can be precisely controlled; the side of the forming chamber 16 has a transparent observation area, so it is possible to observe whether the slurry 5 spreads to the side of the forming chamber 16 and the diffusion situation of the slurry 5 in the broken rock mass 15. At the same time, the camera 19 can record the diffusion situation of the slurry 5 in the broken rock mass 16, and the pressure detection component 7 on the side of the forming chamber 14 can record the pressure conditions at different heights in the forming chamber 16, which can provide a reference for the subsequent preparation process; the filter screen 11 placed on the inner side of the bottom surface of the forming chamber 16 can not only prevent the slurry 5 from quickly impacting the broken rock mass 15, but also filter certain impurities; the top surface of the forming chamber 16 uses a gland 12, which is convenient for loading the broken rock mass 15 and removing the curtain body; the grouting ports 30 are distributed on the bottom surface of the forming chamber 16, and the slurry discharge ports 34 are distributed on the gland 12, which can ensure uniform grouting and slurry discharge.
[0044] This device can efficiently produce various curtain bodies. Through subsequent experiments on each group of curtain bodies, the compatibility of the grouting material, grouting pressure, and broken rock mass can be studied, and the best grouting material, grouting pressure, and broken rock mass can be determined, saving project funds and construction period and improving the project quality.
[0045] This embodiment also discloses a method for experimentally preparing an anti-seepage curtain body, which uses the anti-seepage curtain body experimental preparation device in Embodiment 1 and includes the following steps:
[0046] S1. Check the tightness of the constant-pressure grouting system and the curtain body forming system;
[0047] The method for checking the tightness of the constant-pressure grouting system and the curtain body forming system is as follows: First, open the sealing cover 23, add water into the mixing chamber 4, then cover the sealing cover 23, cover the gland 12 and press a heavy object, and use the sealing parts to seal the periphery of the gland 12; then open the valves 7 on the grouting port 30 and the slurry outlet 38, and then open the air compressor 1, adjust the pressure regulating valve 2, and observe the pressure detection component 7 on the grouting pipe 8 to see if the pressure can be maintained constant for a period of time; after the inspection is completed, turn off the air compressor 1, let the water flow back to the mixing chamber 4, and then pour out the water.
[0048] S2. Prepare the broken rock mass 15 according to the required type and particle size distribution. Open the gland 12, then apply a release agent on the inner wall of the forming chamber 16 and above the filter screen 11, and then pour the broken rock mass 15 into the forming chamber 14 in batches to evenly fill the forming chamber, and then cover the gland 11 and press a heavy object, and use the sealing parts to seal the periphery of the gland 11;
[0049] The method for fabricating the fractured rock mass 15 is as follows: First, select intact rock specimens according to the type, then use a crusher to break the rocks into different particle sizes according to the particle size distribution, and finally mix the rocks of different particle sizes according to the ratio.
[0050] S3. Open the sealing cover 23, put the proportioned slurry 5 into the mixing chamber 4, adjust the agitator to the required rotational speed, then close the sealing cover 23, and turn off the agitator after mixing for a certain period of time; the slurry 5 is generally composed of water, cement, and sodium silicate in proportion.
[0051] S4. Open the air compressor 1 and the valves 7 on the slurry outlet 38 and the grouting port 30, adjust the pressure regulating valve 2 by observing the pressure detecting member 7 and the flow detecting member 6 on the grouting pipe 8 to make the grouting pressure reach the set value. The slurry 5 enters the forming chamber 16 from the mixing chamber 4 and diffuses within the fractured rock mass 15. Meanwhile, the camera 19 records the diffusion situation of the slurry 5 within the fractured rock mass 15, and the pressure detecting member 7 on the side of the forming chamber 16 records the pressure conditions at different heights within the forming chamber 16; the container 17 continuously collects the slurry flowing from the drain pipe 13. When the weight of the slurry 8 collected by the weighing device 18 in the container 17 reaches the set value, turn off the air compressor 1 and the valve 7 on the grouting port 30.
[0052] S5. After curing the curtain body for a certain period of time, open the gland 12 and remove the curtain body; the curtain body can be cured according to the "Technical Specification for Curing of Cast-in-Place Concrete" and taken out after 2 days of curing.
[0053] After the curtain body is prepared, it is also necessary to remove and clean the grouting pipe 8 and the drain pipe 13, as well as clean the forming chamber 16 and the mixing chamber 4; during cleaning, after flushing the inner walls of the forming chamber 16 and the mixing chamber 4, wipe them with a wet towel.
[0054] The embodiments described above are some embodiments of the present application, rather than all embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts fall within the scope of protection of the present application.
Claims
1. An experimental preparation device for an anti-seepage curtain body, characterized in that: It includes a constant-pressure grouting system, a curtain body forming system, and a data acquisition system; the constant-pressure grouting system is used to provide constant-pressure grouting pressure, and includes a mixing bin, an air pipe, and a grouting pipe. A seal cover is installed on the upper part of the mixing bin in an openable and closable manner, and a stirrer with adjustable rotation speed is arranged inside. An air inlet is arranged on the outer side of the upper part of the mixing bin, and a slurry outlet with a valve is arranged on the outer side of the lower part. One end of the air pipe is connected to the air inlet, and the other end is sequentially connected to a pressure regulating valve and an air compressor. One end of the grouting pipe is connected to the slurry outlet; the curtain body forming system is used to grout the broken rock mass to form a curtain body, and includes a forming bin and a slurry discharge pipe. The bottom surface of the forming bin is distributed with slurry injection ports with valves, a filter screen is placed on the inner side of the bottom surface, the side surface has a transparent observation area, and the top surface is a pressing cover that can be tightly sealed and opened. The pressing cover is distributed with slurry discharge ports. One end of the slurry discharge pipe is divided into multiple branches and connected to the corresponding slurry discharge ports respectively, and the other end extends into a container, and the container is weighed by a weighing device. The other end of the grouting pipe is divided into multiple branches and connected to the corresponding slurry injection ports respectively; the data acquisition system is used to record the diffusion situation of the slurry in the broken rock mass and collect the pressure and flow data during the grouting process, and includes a pressure detection component and a flow detection component arranged on the grouting pipe, pressure detection components distributed at different heights on the side surface of the forming bin, and a camera pointing at the observation area on the side surface of the forming bin.
2. The experimental preparation device for the anti-seepage curtain body according to claim 1, wherein: The pressure adjustment range of the air compressor is 0 - 10 MPa.
3. The experimental preparation device for the anti-seepage curtain body according to claim 1, characterized in that: The seal cover and the mixing bin are tightly connected by flanges and bolts and sealed by a sealing ring; the air inlet is arranged on the seal cover; the stirring blades of the stirrer are located inside the mixing bin, and the stirring shaft penetrates through the seal cover in a sealed manner and is detachably connected to the power mechanism, and the power mechanism is installed on a bracket.
4. The experimental preparation device for the anti-seepage curtain body according to claim 3, characterized in that: The power mechanism includes a motor and a rotation speed regulator.
5. The experimental preparation device for the anti-seepage curtain body according to claim 1, characterized in that: The bottom of the mixing bin is fixedly installed through a base.
6. The experimental preparation device for the anti-seepage curtain body according to claim 1, wherein: The air pipe, the grouting pipe, and the slurry discharge pipe all adopt high-pressure hoses. The air pipe is connected to the air inlet by threads and sealed by a sealing ring. One end of the grouting pipe is connected to the slurry outlet by threads and sealed by a sealing ring, and the other end is connected to the slurry injection port by threads and sealed by a sealing ring. The slurry discharge pipe is connected to the slurry discharge port by threads and sealed by a sealing ring.
7. The experimental preparation device for the anti-seepage curtain body according to claim 1, characterized in that: The forming bin includes a steel frame and a transparent plate. The bottom surface and one side surface of the steel frame are steel plates, the remaining side surfaces and the top surface are open, L-shaped brackets are distributed at the upper corners of the bottom surface, and legs are distributed at the lower corners of the bottom surface; the transparent plate is installed on the remaining side surfaces of the steel frame to form an observation area. The adjacent two transparent plates and between the transparent plate and the steel plate on the side surface of the steel frame are spliced at the L-shaped brackets. The splicing position is fixed by adhesive bonding with sealant and sealed with a sealing strip; the pressing cover is arranged on the top surface of the steel frame and sealed with an annular gasket. Pressure detection component installation holes are arranged at different heights on the steel plate on the side surface of the steel frame, and the slurry injection ports are distributed on the steel plate on the bottom surface of the steel frame.
8. The experimental preparation device for the anti-seepage curtain body according to claim 7, characterized in that: The transparent plate adopts an acrylic plate.
9. The experimental preparation device for the anti-seepage curtain body according to claim 1, wherein: The filter screen adopts stainless steel material, the aperture of the filter screen is 1 mm, and the hole pitch is 1 mm.
10. The experimental preparation device for the anti-seepage curtain body according to claim 1, characterized in that: The pressure detection component on the grouting pipe is a pressure gauge, which is connected to the grouting pipe through a tee joint; the pressure detection component on the side surface of the forming bin adopts a digital pressure gauge, which is connected to the side surface of the forming bin by threads and sealed with a gasket; the flow detection component on the grouting pipe adopts a clamp-type flow sensor.