Intelligent grouting test device for filling broken and loose rock-soil body pipe and use method of intelligent grouting test device

Abstract

The invention belongs to the technical field of grouting tests, and discloses an intelligent grouting test device for filling a broken and loose rock-soil body pipe and a using method, the device comprises a stainless steel tank body and a second supporting plate; the two pressing rings are arranged on the outer surfaces, close to the upper side and the lower side, of the stainless steel tank body in a threaded and sleeving mode correspondingly, and a bottom cover and a top cover are arranged on one sides of the two pressing rings correspondingly through bearings. Data acquisition and processing are automatic, manual intervention is reduced, experiment precision is improved, all parts are simple to connect, the experiment method is clear in step, quartz sand filling, pressure setting, grouting execution, data collection and process are standard, operability is high, labor cost can be effectively reduced, experiment efficiency is improved, and long-term repeated use is facilitated.

Description

Technical Field

[0001] This invention relates to the field of grouting test technology, and in particular to an intelligent grouting test device and method for filling broken and loose rock and soil bodies, which is suitable for experimental research on the diffusion and transport mechanism of rock and soil grouting. Background Technology

[0002] As coal mining in my country moves deeper into the region, the surrounding rock conditions in the tunnels become increasingly complex, and the loose and fractured surrounding rock in the tunnels has become an unavoidable engineering challenge.

[0003] In coal mine roadways, loose and fractured surrounding rock has low strength and well-developed fissures, which can easily lead to roof falls, side collapses, support failures, and extrusion and rheological changes in the surrounding rock. When exposed to water, it softens and becomes muddy, triggering water inrushes, which in turn causes roadway cross-section shrinkage, cyclical maintenance, gas accumulation, and surface subsidence, forming a high-risk chain of disasters. Grouting is an effective technical approach to utilize and develop the bearing capacity of the surrounding rock itself. Through grout penetration and cementation of fissures, loose rock blocks are reconsolidated into a whole, while sealing water seepage channels and isolating water from softening and eroding the rock mass. It is a key means of treating loose and fractured surrounding rock.

[0004] Currently, the commonly used grouting reinforcement material for mines is silicate cement composite grout, which can effectively bond most fractured rock masses. However, conventional cement grout has poor injectability into micropores and is not ideal for sealing fluid seepage, making it difficult to effectively reinforce fractured surrounding rock in seepage environments.

[0005] Based on this, many studies have emerged on novel nano-micro grouting reinforcement materials and grouting reinforcement mechanisms for fractured rock masses. However, existing indoor grouting experimental equipment is insufficient to meet the requirements for precision and controllability in related grouting experiments. Therefore, it is urgent to propose a new intelligent grouting experimental device and method of use to meet the needs of laboratory research. Summary of the Invention

[0006] The intelligent grouting test device for filling broken and loose rock and soil provided by this invention realizes visualization and easy visualization of grouting conditions. The connection of each structure is simple, which can ensure the needs of long-term and repeated experiments and effectively improve the utilization rate of grouting test equipment. At the same time, it provides an experimental method with clear logic, simple steps, and strong operability, which can effectively reduce labor costs and improve experimental efficiency.

[0007] To achieve the above objectives, the present invention employs the following technical solution: an intelligent grouting test device for filling broken and loose rock and soil, the device comprising:

[0008] Stainless steel tank body and second support plate;

[0009] Two pressure rings are threaded onto the outer surface of the stainless steel tank body near the upper and lower sides, and a bottom cover and a top cover are respectively provided on one side of the two pressure rings through bearings. The bottom cover and the top cover are connected to the upper and lower sides of the stainless steel tank body through bearings. During installation, the two pressure rings are fixed on the outer surface of the stainless steel tank body by rotating the two pressure rings clockwise, and the bottom cover and the top cover are further installed on the outer surface of the stainless steel tank body.

[0010] An exhaust port is fixedly installed on one side of the top cover, and an internal hexagonal plug is provided on the inner wall of the exhaust port. The exhaust port is used to vent air and assist in pouring slurry.

[0011] An air inlet is fixedly installed on one side of the top cover, and a power system component is installed on one side of the air inlet via a pressure-resistant air guide hose.

[0012] As a further improvement of the present invention: O-rings are fixedly provided on the inner walls of both the bottom cover and the top cover. Two O-rings are tightly attached to the inner wall of the stainless steel tank. Three reinforcing retaining rings are distributed at intervals along the axial direction of the stainless steel tank on the outer surface of the stainless steel tank. Multiple reinforcing retaining rings are welded to the outer surface of the stainless steel tank to form circumferential constraints on the stainless steel tank and enhance the tank's resistance to deformation under internal high pressure. A grout inlet is provided on one side of the top cover. A ball valve is installed on the outer surface of the grout inlet. The stainless steel tank is used to store the prepared grout to be injected.

[0013] As a further improvement of the present invention: the power system components include an air compressor, a booster pump, a first support plate, two pressure regulating valves, and a digital pressure gauge. The output end of the air compressor is connected to the input end of the booster pump via a pressure-resistant air guide hose. The two pressure regulating valves are used to adjust the grouting pressure in stages. The output end of the booster pump is installed in series on one side of the two pressure regulating valves. One side of the digital pressure gauge is connected to one side of one of the pressure regulating valves via a pressure-resistant air guide hose. The other side of the digital pressure gauge is set on one side of the air inlet via a pressure-resistant air guide hose. The two pressure regulating valves and the digital pressure gauge are fixedly installed on one side of the first support plate. The air compressor compresses air and increases the air pressure through the booster pump, which can provide a maximum pressure of 6MPa. During grouting, the pressure can be adjusted through two pressure regulating valves with different ranges and accuracies, and the digital pressure gauge provides real-time feedback and recording. The adjustment accuracy can reach ±0.01MPa.

[0014] As a further improvement of the present invention: one of the pressure regulating valves has a range of 0-2MPa, the other pressure regulating valve has a range of 2-6MPa, the digital pressure gauge has a range of 0-6MPa and a resolution of 0.001MPa, and the burst pressure of the pressure-resistant air-conducting hose is greater than or equal to 10MPa.

[0015] As a further improvement of the present invention: a stirring assembly is fixedly installed at the center of one side of the top cover. The stirring assembly includes a drive motor, a transmission rod, and multiple stirring blades. The drive motor is installed on one side of the top cover, and the center of one side of the top cover is mounted on the outer surface of the transmission rod via a bearing. The output shaft of the drive motor is fixedly installed on one side of the transmission rod, and the multiple stirring blades are respectively fixedly installed on the outer surface of the transmission rod. The stirring assembly can quickly and evenly stir the uninjected slurry inside the slurry tank when the top of the slurry tank is sealed, preventing the slurry from settling and greatly reducing the risk of pipeline blockage. When the external power switch of the drive motor is turned on, the output shaft of the drive motor drives the transmission rod to rotate, which in turn drives the multiple stirring blades to rotate, quickly and evenly stirring the slurry and preventing the slurry from settling.

[0016] As a further improvement of the present invention: a viscosity sensor is installed on one side of the second support plate, and pressure-resistant grouting hoses are installed on both sides of the viscosity sensor. One end of one of the pressure-resistant grouting hoses is installed on one side of the bottom cover, and a sand-filling component is provided at one end of the other pressure-resistant grouting hose. A USB interface is provided on one side of the viscosity sensor. The USB interface is used to connect a USB cable to realize data transmission with a computer. The USB interface is connected to the computer through a USB cable. The viscosity sensor is a 6-in-1 viscosity sensor, which can measure the density and kinematic viscosity parameters of the slurry flowing through it in real time.

[0017] As a further improvement of the present invention: the sand-filling assembly includes two semi-cylindrical hollow steel pipes, a groove, a protrusion, and two grouting plugs. The groove is formed on one side of one of the semi-cylindrical hollow steel pipes, and the protrusion is fixedly set on one side of the other semi-cylindrical hollow steel pipe. The groove matches the protrusion. Grouting plugs are set on both sides of the two semi-cylindrical hollow steel pipes by screws. A silicone strip is set at the joint of the two semi-cylindrical hollow steel pipes. The two semi-cylindrical hollow steel pipes are fixed by multiple clamp assemblies. During installation, by inserting the protrusion into the groove, the joint of the two semi-cylindrical hollow steel pipes is blocked to prevent grout from overflowing through the joint. At the same time, the silicone strip set at the joint of the two semi-cylindrical hollow steel pipes further improves the sealing effect. The two grouting plugs are installed on both sides of the two semi-cylindrical hollow steel pipes by rotating the screws.

[0018] As a further improvement of the present invention: each of the multiple clamp components includes two semicircular rings, two bolts, and two nuts. The inner walls of the two semicircular rings are movably fitted onto the outer surfaces of the two bolts, and the two nuts are threaded onto the outer surfaces of the two bolts. The outer diameter of the hollow steel tube of the semi-cylindrical body is adapted to the inner diameter of the two semicircular rings. One of the grouting plugs is installed on one side of the other pressure-resistant grouting hose. A liquid guiding hose is installed on one side of the other grouting plug. A liquid-holding beaker is installed at one end of the liquid guiding hose. An electronic balance is set on one side of the liquid-holding beaker. The slurry flows into the interior of the liquid-holding beaker through the liquid guiding hose. The industrial camera is adjusted to a position 30cm away from one end of the liquid-holding beaker, and the focal length of the industrial camera is set to 50mm. The slurry discharge from the liquid-holding beaker is observed. The electronic balance is calibrated by tare weight, and the sampling interval is set to 1s. The quality of the slurry is detected by the electronic balance.

[0019] The method of using the intelligent grouting test device for filling broken and loose rock and soil pipes, including the aforementioned intelligent grouting test device for filling broken and loose rock and soil pipes, also includes the following steps:

[0020] S1, Quartz sand loading and filling pipe;

[0021] S2, Grouting execution;

[0022] S3, Data Collection.

[0023] As a further improvement of the present invention: step S1 includes the following sub-steps:

[0024] S1.1. Dry the quartz sand for 8 hours, sieve it for 5 minutes using an ultrasonic sieve, and sieve it into 3 zones according to particle size. Mix them evenly in a ratio of 80-120 mesh: 120-140 mesh: 200 mesh = 1:1:2.

[0025] S1.2 Install four clamp components every 10cm on the outside of the semi-cylindrical hollow steel pipe. Fix another grouting plug to the grout outlet end of the semi-cylindrical hollow steel pipe with screws. Fill the inside of the two semi-cylindrical hollow steel pipes with quartz sand in 6 layers, each layer 10cm thick. After each layer is filled, compact it with a tamping hammer.

[0026] S1.3. Push one of the grouting plugs into the grouting end of the two semi-cylindrical hollow steel pipes until the quartz sand is completely compacted, and fix it with screws.

[0027] Step S2 includes the following sub-steps:

[0028] S2.1. Open the ball valve and inject 500ml of modified epoxy slurry into the stainless steel tank through the slurry inlet. Add the slurry and close the ball valve.

[0029] S2.2 Turn on the external power switch of the drive motor. The output shaft of the drive motor drives the transmission rod to rotate. The speed of the transmission rod is greater than 2000 rpm and the torque fluctuation is less than 5%. Multiple stirring blades stir the slurry.

[0030] S2.3 Adjust the pressure of the two pressure regulating valves (204) to 3.0MPa, turn on the air compressor (201), the stainless steel tank (1) is under pressure, and grout is injected into the two semi-cylindrical hollow steel pipes (401). The grout flows into the liquid beaker (501) through the liquid guiding hose (5). Adjust the industrial camera to a position 30cm away from the grout outlet of the liquid beaker (501) using a tripod. Set the focal length of the industrial camera to 50mm, turn on the industrial camera and complete the automatic white balance calibration.

[0031] S2.4 Start the central controller and intelligent monitoring module. The intelligent monitoring module establishes a communication connection with the central controller, sets the electronic balance serial port 2@9600bps and the density sensor serial port 59@three-in-one mode to ensure that the data from the viscosity sensor, digital pressure gauge, electronic balance and industrial camera can be transmitted to the central controller in real time.

[0032] Step S3 includes the following sub-steps:

[0033] S3.1 The intelligent monitoring module collects and transmits data on slurry density, dynamic viscosity, grouting pressure and slurry mass flow rate in real time through communication with the central controller. The central controller simultaneously records the time from the start of grouting to slurry discharge and the dynamic video of slurry discharge from the industrial camera.

[0034] S3.2 When the mass change of the electronic balance is less than 0.01g for 5 consecutive minutes, stop grouting and save the data.

[0035] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0036] 1. When using this invention, the grouting situation is visualized by real-time monitoring, recording and display of parameters such as grouting pressure, grout density, kinematic viscosity and grout mass flow rate. Data acquisition and processing are automated, reducing manual intervention and improving experimental accuracy.

[0037] 2. The device of the present invention has simple connections between its components and clear experimental methods and steps. From quartz sand filling and pressure setting to grouting execution and data collection, the process is standardized, highly operable, can effectively reduce labor costs, improve experimental efficiency, and is easy to use for a long time and repeatedly.

[0038] 3. This invention can be used for the injectionability testing of novel nano-micro grouting reinforcement materials and the study of grouting reinforcement mechanisms in fractured rock masses. It provides a reliable platform for research under different grouting materials and experimental conditions, and meets the laboratory's needs for precise and controllable experiments. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the intelligent grouting test device for filling broken and loose rock and soil bodies proposed in this invention.

[0040] Figure 2 This is a side-view three-dimensional structural diagram of the intelligent grouting test device for filling broken and loose rock and soil bodies proposed in this invention.

[0041] Figure 3 This is a three-dimensional structural diagram of the stainless steel tank of the intelligent grouting test device for filling broken and loose rock and soil proposed in this invention.

[0042] Figure 4 This invention presents a schematic diagram of the internal three-dimensional structure of the stainless steel tank in the intelligent grouting test device for filling broken and loose rock and soil.

[0043] Figure 5 This invention presents a three-dimensional structural diagram of the power system components in the intelligent grouting test device for filling broken and loose rock and soil.

[0044] Figure 6 This is a schematic diagram of the three-dimensional structure of the two semi-cylindrical hollow steel pipes after disassembly in the intelligent grouting test device for filling broken and loose rock and soil proposed in this invention.

[0045] Figure 7 The present invention provides a flowchart of the method for using the intelligent grouting test device for filling broken and loose rock and soil.

[0046] Legend: 1. Stainless steel tank body; 101. Pressure ring; 102. Bottom cover; 103. Top cover; 104. Reinforcing retaining ring; 105. O-ring; 106. Exhaust port; 107. Socket hexagon plug; 108. Air inlet; 109. Slurry inlet; 110. Ball valve; 2. Power system components; 201. Air compressor; 202. Booster pump; 203. First support plate; 204. Pressure regulating valve; 205. Digital pressure gauge; 3. Second support plate; 30 1. Viscosity sensor; 302. Pressure-resistant grouting hose; 303. USB interface; 4. Sand filling assembly; 401. Semi-cylindrical hollow steel pipe; 402. Groove; 403. Protrusion; 404. Grouting plug; 405. Clamp assembly; 4051. Semi-circular ring; 4052. Bolt; 4053. Nut; 5. Liquid guiding hose; 501. Liquid holding beaker; 502. Electronic balance; 6. Stirring assembly; 601. Drive motor; 602. Transmission rod; 603. Stirring blade. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] like Figures 1 to 6 As shown, the present invention provides an intelligent grouting test device and method for filling broken and loose rock and soil, the device comprising:

[0049] Stainless steel tank body 1 and second support plate 3;

[0050] Two pressure rings 101 are threaded onto the outer surfaces of the stainless steel tank body 1 near the upper and lower sides, and a bottom cover 102 and a top cover 103 are respectively provided on one side of the two pressure rings 101 via bearings.

[0051] The exhaust port 106 is fixedly installed on one side of the top cover 103, and an internal hexagon plug 107 is provided on the inner wall of the exhaust port 106. The exhaust port 106 is used to vent air and assist in pouring slurry.

[0052] An air inlet 108 is fixedly installed on one side of the top cover 103, and a power system component 2 is installed on one side of the air inlet 108 through a pressure-resistant air guide hose. O-rings 105 are fixedly installed on the inner walls of both the bottom cover 102 and the top cover 103. Two O-rings 105 are tightly attached to the inner wall of the stainless steel tank 1. Three reinforcing retaining rings 104 are distributed axially along the outer surface of the stainless steel tank 1. The three reinforcing retaining rings 104 are welded to the outer surface of the stainless steel tank 1 to form a circumferential constraint on the stainless steel tank 1 and enhance the tank's resistance to deformation under internal high pressure. A slurry inlet 109 is provided on one side of the top cover 103, and a ball valve 110 is installed on the outer surface of the slurry inlet 109.

[0053] Please see Figures 1 to 6 In one embodiment, the power system component 2 includes an air compressor 201, a booster pump 202, a first support plate 203, two pressure regulating valves 204, and a digital pressure gauge 205. The output end of the air compressor 201 is connected to the input end of the booster pump 202 through a pressure-resistant air guide hose. The two pressure regulating valves 204 are used to adjust the grouting pressure in stages. The output end of the booster pump 202 is connected in series to one side of the two pressure regulating valves 204. One side of the digital pressure gauge 205 is connected to one side of one of the pressure regulating valves 204 through a pressure-resistant air guide hose. The other side of the digital pressure gauge 205 is set on one side of the air inlet 108 through a pressure-resistant air guide hose. The two pressure regulating valves 204 and the digital pressure gauge 205 are fixedly installed on one side of the first support plate 203.

[0054] Please see Figures 1 to 6 In one embodiment, one pressure regulating valve 204 has a range of 0-2 MPa, another pressure regulating valve 204 has a range of 2-6 MPa, the digital pressure gauge 205 has a range of 0-6 MPa and a resolution of 0.001 MPa, and the burst pressure of the pressure-resistant gas-conducting hose is greater than or equal to 10 MPa.

[0055] Please see Figures 1 to 6 In one embodiment, a stirring assembly 6 is fixedly installed at the center of one side of the top cover 103. The stirring assembly 6 includes a drive motor 601, a transmission rod 602, and multiple stirring blades 603. The drive motor 601 is installed on one side of the top cover 103, and the center of one side of the top cover 103 is set on the outer surface of the transmission rod 602 through a bearing. The output shaft of the drive motor 601 is fixedly installed on one side of the transmission rod 602, and the multiple stirring blades 603 are respectively fixedly installed on the outer surface of the transmission rod 602. The stirring assembly 6 can quickly and evenly stir the uninjected slurry inside the slurry tank when the top of the slurry tank is sealed, preventing the slurry from settling and greatly reducing the risk of pipeline blockage.

[0056] Please see Figures 1 to 6 In one embodiment, a viscosity sensor 301 is installed on one side of the second support plate 3, and pressure-resistant grouting hoses 302 are installed on both sides of the viscosity sensor 301. One end of one pressure-resistant grouting hose 302 is installed on one side of the bottom cover 102, and a sand filling component 4 is provided at one end of the other pressure-resistant grouting hose 302. A USB interface 303 is provided on one side of the viscosity sensor 301. The USB interface 303 is used to connect a USB cable to realize data transmission between the USB interface 303 and the computer. The viscosity sensor 301 is a 6-in-1 viscosity sensor that can measure the density and kinematic viscosity parameters of the slurry flowing through it in real time.

[0057] Please see Figures 1 to 6 In one embodiment, the sand filling component 4 includes two semi-cylindrical hollow steel pipes 401, a groove 402, a protrusion 403, and two grouting plugs 404. The groove 402 is formed on one side of one of the semi-cylindrical hollow steel pipes 401, and the protrusion 403 is fixedly set on one side of the other semi-cylindrical hollow steel pipe 401. The groove 402 and the protrusion 403 match. Grouting plugs 404 are provided on both sides of the two semi-cylindrical hollow steel pipes 401 by screws. A silicone strip is provided at the joint of the two semi-cylindrical hollow steel pipes 401. The two semi-cylindrical hollow steel pipes 401 are fixed by multiple clamp components 405.

[0058] Please see Figures 1 to 6In one embodiment, each of the multiple clamp assemblies 405 includes two semicircular rings 4051, two bolts 4052, and two nuts 4053. The inner walls of the two semicircular rings 4051 are movably fitted onto the outer surfaces of the two bolts 4052, and the two nuts 4053 are threaded onto the outer surfaces of the two bolts 4052. The outer diameter of the semi-cylindrical hollow steel tube 401 is adapted to the inner diameter of the two semicircular rings 4051. One of the grouting plugs 404 is installed on one side of another pressure-resistant grouting hose 302. A liquid guiding hose 5 is installed on one side of the other grouting plug 404. A liquid-holding beaker 501 is installed at one end of the liquid guiding hose 5, and an electronic balance 502 is provided on one side of the liquid-holding beaker 501. During testing, an industrial camera is placed at the liquid outlet of the liquid guiding hose 5 to observe the grout discharge.

[0059] Please see Figures 1 to 7 In one embodiment, the method of using the intelligent grouting test device for filling broken and loose rock and soil includes the following steps:

[0060] S1. Quartz sand loading and filling: Dry the quartz sand for 8 hours, sieve it for 5 minutes using an ultrasonic sieve, and sieve it into 3 zones according to particle size. Mix them evenly in a ratio of 80-120 mesh: 120-140 mesh: 200 mesh = 1:1:2. Install four clamp components 405 every 10cm on the outside of the semi-cylindrical hollow steel pipe 401. Fix another grouting plug 404 to the grout outlet end of the semi-cylindrical hollow steel pipe 401 with screws. Fill the inside of the two semi-cylindrical hollow steel pipes 401 with quartz sand in 6 layers, each layer 10cm thick. After each layer is filled, compact it with a tamping hammer. Push one of the grouting plugs 404 into the grouting end of the two semi-cylindrical hollow steel pipes 401 until the quartz sand is completely compacted, and fix it with screws.

[0061] S2. Grouting execution: Open ball valve 110 and inject 500ml of modified epoxy grout into the stainless steel tank 1 through grout inlet 109. After adding the grout, close ball valve 110. Turn on the external power switch of drive motor 601. The output shaft of drive motor 601 drives transmission rod 602 to rotate. The speed of transmission rod 602 is greater than 2000rpm, and the torque fluctuation is less than 5%. Multiple stirring blades 603 agitate the grout. Adjust the pressure of the two pressure regulating valves 204 to 3.0MPa. Turn on the switch of air compressor 201. The inside of stainless steel tank 1 is pressurized, and grouting begins to flow into the two semi-cylindrical hollow steel pipes 401. Grouting is performed, with the grout flowing through the liquid guiding hose 5 into the liquid-containing beaker 501. The industrial camera is adjusted to a position 30cm away from the grout outlet of the liquid-containing beaker 501 using a tripod. The focal length of the industrial camera is set to 50mm. The industrial camera is turned on and automatic white balance calibration is completed. The central controller and intelligent monitoring module are started. The intelligent monitoring module establishes a communication connection with the central controller. The serial port 2@9600bps of the electronic balance 502 and the serial port 59@ of the density sensor are set to a three-in-one mode to ensure that the data from the viscosity sensor 301, digital pressure gauge 205, electronic balance 502, and industrial camera can be transmitted to the central controller in real time.

[0062] S3. Data Collection and Intelligent Monitoring Module: Through communication with the central controller, the module collects and transmits data on slurry density, dynamic viscosity, grouting pressure, and slurry mass flow rate in real time. The central controller simultaneously records the time from the start of grouting to slurry discharge and the dynamic video of slurry discharge from the industrial camera. When the mass change of the electronic balance 502 is less than 0.01g for 5 consecutive minutes, the grouting is terminated and the data is saved.

[0063] The working principle and usage process of this invention are as follows: Air is generated by the air compressor 201 in the power system component 2, and after being pressurized by the booster pump 202, the pressure is adjusted in stages by two pressure regulating valves 204 with different ranges to meet different grouting pressure requirements. The digital pressure gauge 205 monitors and feeds back the pressure value in real time. The high-pressure gas enters the stainless steel tank 1 through the air inlet 108 to provide power for the grout transport. The stainless steel tank 1 stores the grout. The reinforcement ring 104 enhances the deformation resistance, and the O-ring 105 ensures the sealing performance. The stirring component 6 stirs the grout. The slurry is stirred to prevent sedimentation. Under pressure, the slurry flows out from the liquid guiding hose and passes through the viscosity sensor 301. The viscosity sensor 301 detects the density and kinematic viscosity parameters of the slurry in real time and transmits them to the computer via the USB interface 303. The slurry then enters the sand filling component 4, which is filled with mixed quartz sand to simulate a fractured rock mass environment. After flowing through the quartz sand, the slurry enters the liquid holding beaker 501 through the liquid guiding hose 5. The electronic balance 502 weighs the slurry mass in real time, and all relevant data are transmitted to the computer for processing, display, and storage.

[0064] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0065] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0066] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent grouting test device for filling broken and loose rock and soil, characterized in that, The device includes: Stainless steel tank body (1) and second support plate (3); Two pressure rings (101) are threaded onto the outer surfaces of the stainless steel tank body (1) near the upper and lower sides, and a bottom cover (102) and a top cover (103) are respectively provided on one side of the two pressure rings (101) via bearings; An exhaust port (106) is fixedly installed on one side of the top cover (103), and an internal hexagon plug (107) is provided on the inner wall of the exhaust port (106). The exhaust port (106) is used to exhaust air and assist in pouring slurry. An air inlet (108) is fixedly installed on one side of the top cover (103), and a power system component (2) is installed on one side of the air inlet (108) through a pressure-resistant air guide hose.

2. The intelligent grouting test device for filling broken and loose rock and soil as described in claim 1, characterized in that: O-rings (105) are fixedly installed on the inner walls of the bottom cover (102) and the top cover (103). Two O-rings (105) are tightly attached to the inner wall of the stainless steel tank (1). Three reinforcing rings (104) are distributed at intervals along the axial direction of the stainless steel tank (1) on the outer surface of the stainless steel tank (1). Multiple reinforcing rings (104) are welded to the outer surface of the stainless steel tank (1) to form a circumferential constraint on the stainless steel tank (1).

3. The intelligent grouting test device for filling broken and loose rock and soil as described in claim 1, characterized in that: The power system component (2) includes an air compressor (201), a booster pump (202), a first support plate (203), two pressure regulating valves (204), and a digital pressure gauge (205). The output end of the air compressor (201) is connected to the input end of the booster pump (202) through a pressure-resistant air guide hose. The two pressure regulating valves (204) are used to adjust the grouting pressure in stages. The output end of the booster pump (202) is installed in series on one side of the two pressure regulating valves (204). One side of the digital pressure gauge (205) is connected to one side of one of the pressure regulating valves (204) through a pressure-resistant air guide hose. The other side of the digital pressure gauge (205) is set on one side of the air inlet (108) through a pressure-resistant air guide hose. The two pressure regulating valves (204) and the digital pressure gauge (205) are fixedly installed on one side of the first support plate (203).

4. The intelligent grouting test device for filling broken and loose rock and soil as described in claim 3, characterized in that: One of the pressure regulating valves (204) has a range of 0-2 MPa, the other pressure regulating valve (204) has a range of 2-6 MPa, the digital pressure gauge (205) has a range of 0-6 MPa and a resolution of 0.001 MPa, and the burst pressure of the pressure-resistant air-conducting hose is greater than or equal to 10 MPa.

5. The intelligent grouting test device for filling broken and loose rock and soil as described in claim 1, characterized in that: A stirring assembly (6) is fixedly installed at the center of one side of the top cover (103). The stirring assembly (6) includes a drive motor (601), a transmission rod (602), and multiple stirring blades (603). The drive motor (601) is installed on one side of the top cover (103). The center of one side of the top cover (103) is set on the outer surface of the transmission rod (602) by a bearing. The output shaft of the drive motor (601) is fixedly installed on one side of the transmission rod (602). The multiple stirring blades (603) are respectively fixedly installed on the outer surface of the transmission rod (602).

6. The intelligent grouting test device for filling broken and loose rock and soil as described in claim 1, characterized in that: A viscosity sensor (301) is installed on one side of the second support plate (3). Pressure-resistant grouting hoses (302) are installed on both sides of the viscosity sensor (301). One end of one of the pressure-resistant grouting hoses (302) is installed on one side of the bottom cover (102), and a sand filling component (4) is provided at one end of the other pressure-resistant grouting hose (302). A USB interface (303) is provided on one side of the viscosity sensor (301). The USB interface (303) is used to connect a USB cable to realize data transmission with a computer. The viscosity sensor (301) is a 6-in-1 viscosity sensor that can measure the density and kinematic viscosity parameters of the slurry flowing through it in real time.

7. The intelligent grouting test device for filling broken and loose rock and soil as described in claim 6, characterized in that: The sand filling component (4) includes two semi-cylindrical hollow steel pipes (401), a groove (402), a protrusion (403), and two grouting plugs (404). The groove (402) is opened on one side of one of the semi-cylindrical hollow steel pipes (401), and the protrusion (403) is fixedly set on one side of the other semi-cylindrical hollow steel pipe (401). The groove (402) matches the protrusion (403). Grouting plugs (404) are set on both sides of the two semi-cylindrical hollow steel pipes (401) by screws. A silicone strip is set at the joint of the two semi-cylindrical hollow steel pipes (401). The two semi-cylindrical hollow steel pipes (401) are fixed by multiple clamp components (405).

8. The intelligent grouting test device for filling broken and loose rock and soil as described in claim 7, characterized in that: Each of the clamp assemblies (405) includes two semicircular rings (4051), two bolts (4052), and two nuts (4053). The inner walls of the two semicircular rings (4051) are movably fitted onto the outer surfaces of the two bolts (4052), and the two nuts (4053) are threaded onto the outer surfaces of the two bolts (4052). The outer diameter of the hollow steel tube (401) of the semi-cylindrical body is adapted to the inner diameter of the two semicircular rings (4051). One of the grouting plugs (404) is installed on one side of the other pressure-resistant grouting hose (302).

9. The intelligent grouting test device for filling broken and loose rock and soil as described in claim 8, characterized in that: Another grouting plug (404) is equipped with a liquid guiding hose (5) on one side, and a liquid holding beaker (501) is installed at one end of the liquid guiding hose (5), and an electronic balance (502) is provided on one side of the liquid holding beaker (501).

10. The method of using the intelligent grouting test device for filling broken and loose rock and soil, characterized in that: The intelligent grouting test device for filling broken and loose rock and soil as described in claims 1-9 includes the following steps: S1, Quartz sand loading and filling of the pipe; S2, Grouting execution; S3, Data Collection; Step S1 includes the following sub-steps: S1.

1. Dry the quartz sand for 8 hours, sieve it for 5 minutes using an ultrasonic sieve, and sieve it into 3 zones according to particle size. Mix them evenly in a ratio of 80-120 mesh: 120-140 mesh: 200 mesh = 1:1:

2. S1.2 Install four clamp components (405) every 10cm on the outside of the semi-cylindrical hollow steel pipe (401), fix another grouting plug (404) with screws to the grout outlet end of the semi-cylindrical hollow steel pipe (401), and fill the inside of the two semi-cylindrical hollow steel pipes (401) with quartz sand in 6 layers, each layer being 10cm thick, and compact each layer with a tamping hammer after filling. S1.3 Push one of the grouting plugs (404) into the grouting end of the two semi-cylindrical hollow steel pipes (401) until the quartz sand is completely compacted, and fix it with screws; Step S2 includes the following sub-steps: S2.1 Open the ball valve (110) and inject 500ml of modified epoxy slurry into the stainless steel tank (1) through the slurry inlet (109). Add the slurry and close the ball valve (110). S2.2 Turn on the external power switch of the drive motor (601). The output shaft of the drive motor (601) drives the transmission rod (602) to rotate. The speed of the transmission rod (602) is greater than 2000 rpm and the torque fluctuation is less than 5%. Multiple stirring blades (603) stir the slurry. S2.3 Adjust the pressure of the two pressure regulating valves 204 to 3.0MPa, turn on the air compressor 201, the stainless steel tank 1 is under pressure, and grout begins to be injected into the two semi-cylindrical hollow steel pipes 401. The grout flows into the liquid-holding beaker 501 through the liquid guiding hose 5. Adjust the industrial camera to a position 30cm away from the grout outlet of the liquid-holding beaker 501 using a tripod. Set the focal length of the industrial camera to 50mm, turn on the industrial camera and complete the automatic white balance calibration. S2.4 Start the central controller and intelligent monitoring module. The intelligent monitoring module establishes a communication connection with the central controller, sets the serial port 2@9600bps of the electronic balance (502) and the serial port 59@3-in-1 mode of the density sensor, and ensures that the data of the viscosity sensor (301), digital pressure gauge (205), electronic balance (502) and industrial camera can be transmitted to the central controller in real time. Step S3 includes the following sub-steps: S3.1 The intelligent monitoring module collects and transmits data on slurry density, dynamic viscosity, grouting pressure and slurry mass flow rate in real time through communication with the central controller. The central controller simultaneously records the time from the start of grouting to slurry discharge and the dynamic video of slurry discharge from the industrial camera. S3.2 When the mass change of the electronic balance (502) is less than 0.01g for 5 consecutive minutes, stop the grouting and save the data.

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