Test system and method for testing slurry flow rule

Abstract

According to the test system and method for testing the slurry flow rule, the water injection pump subsystem provides water with a certain pressure for the grouting subsystem, so that the grouting container pushes the piston to move with a certain pressure, and cement slurry in the grouting container is injected into the test chamber with a certain pressure; a plurality of measuring devices of the measuring subsystem are arranged on the side wall of a test chamber, so that the test chamber in which cement paste is injected is measured, and an acquisition device acquires measured data and transmits the measured data to a display device for display, so that an analyst can more intuitively watch the test data, the grouting process can be adjusted according to the measured data, and the grouting efficiency is improved. The grouting effect is improved; and the engineering quality and safety are ensured. And continuous innovation and development of the grouting technology are promoted. The performance and efficiency of the grouting technology can be continuously improved, and the increasingly complex engineering requirements are met.

Description

Technical Field

[0001] The present application relates to the technical field of formation grouting, and in particular to a test system and method for testing the flow law of slurry. Background Art

[0002] Grouting in broken rock is an effective method to improve the surrounding rock structure and mechanical properties of rock mass, significantly improve the strength and impermeability of broken rock mass, and improve the safety of underground projects. It has been widely used in the development and utilization of underground spaces such as mining and tunnels. Therefore, it is of great significance to explore the permeation, migration and blockage laws of slurry in broken rock mass. However, the existing methods to explore the permeation, migration and blockage laws of slurry in broken rock mass can only be carried out in actual experiments during grouting in broken rock mass, and it is difficult to obtain optimized grouting parameters and processes. Summary of the invention

[0003] In view of this, the purpose of this application is to propose an experimental system and method for testing the flow law of slurry, so as to solve the problem that the existing grouting experiment can only be carried out in the actual grouting of broken rock, and it is difficult to obtain optimized grouting parameters and processes.

[0004] Based on the above purpose, the present application provides a test system for testing the flow law of slurry, comprising:

[0005] A water injection pump subsystem, comprising a water tank and a water pump connected to each other, wherein the water inlet of the water tank is connected to a water source, and the water inlet of the water pump is connected to the water outlet of the water tank;

[0006] The grouting subsystem comprises a grouting container, wherein a piston is arranged in the grouting container, and the piston divides the grouting container into a water inlet end and a cement slurry end, wherein the water inlet end is connected to the water outlet of the water pump;

[0007] A test chamber subsystem comprises a test chamber, wherein a grouting end of the test chamber is connected to a cement slurry end of the grouting container;

[0008] The measuring subsystem includes a plurality of measuring devices, a collection device and a display device. The plurality of measuring devices are arranged on the side wall of the test chamber so that the collection device collects the data measured by the measuring devices for display by the display device.

[0009] Optionally, a pressure regulating knob and a back pressure valve are provided on the pipeline between the water inlet end and the water outlet of the water pump, the pressure regulating knob is arranged at the water outlet of the water pump, and the back pressure valve is arranged near the water inlet end.

[0010] Optionally, an overflow pipe for maintaining water outlet pressure is provided between the water pump and the water tank.

[0011] Optionally, a pump pressure sensor and a flow sensor arranged in sequence are provided on the pipeline between the water inlet end and the water outlet of the water pump, and the pump pressure sensor and the flow sensor are arranged between the pressure regulating knob and the back pressure valve.

[0012] Optionally, the grouting container comprises a grouting barrel, a front end cover and a rear end cover arranged at both ends of the grouting barrel, the piston is arranged in the grouting barrel, a plurality of large tie rods are arranged in an array between the front end cover and the rear end cover, and the plurality of large tie rods are arranged around the grouting barrel, the water inlet end is formed between the front end cover and the piston, and the cement slurry end is formed between the rear end cover and the piston;

[0013] Wherein, the front end cover is connected to the water outlet of the water pump through a pipeline, and the rear end cover is connected to the grouting end of the test chamber through a pipeline.

[0014] Optionally, the test chamber subsystem also includes a frame, which includes a base and a support frame, the base is provided with a water receiving trough, the support frame is placed in the water receiving trough, the test chamber is fixed on the support frame, and the slurry outlet end of the test chamber is connected to the water receiving trough through a pipeline.

[0015] Optionally, the support frame includes a support platform and a column arranged on the support platform, the support platform is provided with a test chamber mounting seat, the lower end cover of the test chamber is fixed on the test chamber mounting seat, the grouting end of the test chamber is arranged on the lower end cover of the test chamber, and the pipeline on the upper end cover of the test chamber bypasses the column and extends into the water receiving trough.

[0016] Optionally, the plurality of measuring devices include a plurality of pressure sensors arranged in an array along a side wall in a height direction of the test chamber.

[0017] Optionally, the acquisition device includes a collection instrument and a camera, the collection instrument is electrically connected to the plurality of pressure sensors, and a shooting end of the camera faces the test chamber.

[0018] Based on the same inventive concept, the present application also provides a test method for testing the flow law of slurry, which is applicable to any of the above-mentioned test systems for testing the flow law of slurry, including:

[0019] Adjust the pressure of the water injection pump subsystem according to the preset pressure value, so that the water injection pump subsystem injects water with the preset pressure value into the grouting container;

[0020] The grouting container injects cement slurry with a preset pressure value into the test chamber, and a plurality of measuring devices and collecting devices collect and transmit measured data to a display device, and the display device draws a curve graph according to the measured data and displays it.

[0021] As can be seen from the above, the present application provides a test system and method for testing the flow law of slurry, the system includes a water injection pump subsystem, including a water tank and a water pump connected to each other, the water inlet of the water tank is connected to the water source, and the water inlet of the water pump is connected to the water outlet of the water tank; a grouting subsystem, including a grouting container, a piston is provided in the grouting container, the piston divides the grouting container into a water inlet end and a cement slurry end, and the water inlet end is connected to the water outlet of the water pump; a test chamber subsystem, including a test chamber, the grouting end of the test chamber is connected to the cement slurry end of the grouting container; a measuring subsystem, including a plurality of measuring devices, a collection device and a display device, the plurality of measuring devices are arranged on the side wall of the test chamber, so that the collection device collects data measured by the measuring device for display by the display device. The water injection pump subsystem provides water with a certain pressure to the grouting subsystem, so that the grouting container pushes the piston to move at a certain pressure, thereby injecting the cement slurry in the grouting container into the test chamber at a certain pressure. The multiple measuring devices of the measurement subsystem are set on the side wall of the test chamber to measure the test chamber where the cement slurry is being injected. The acquisition device collects the measured data and transmits it to the display device for display, so that analysts can view the test data more intuitively, so that the grouting process can be adjusted according to the measurement data, the grouting effect can be improved, and the quality and safety of the project can be ensured. It has promoted the continuous innovation and development of grouting technology. It can continuously improve the performance and efficiency of grouting technology to meet the increasingly complex engineering needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a schematic diagram of the structure of a test system for testing the flow law of slurry according to an embodiment of the present application;

[0024] Figure 2 This is a schematic diagram of the structure of the water injection pump subsystem of an embodiment of the present application;

[0025] Figure 3 This is a schematic diagram of the structure of the grouting subsystem of an embodiment of the present application;

[0026] Figure 4 and Figure 5 This is a schematic diagram of the test results of the embodiment of the present application;

[0027] Figure 6 A schematic flow chart of a test method for testing the flow law of slurry according to an embodiment of the present application;

[0028] Figure 7 A schematic diagram of the hardware structure of an electronic device according to an embodiment of the present application.

[0029] In the attached figure:

[0030] 01. Water injection pump subsystem; 02. Grouting subsystem; 03. Experimental chamber subsystem; 04. Measurement subsystem; 1. Box; 2. Filter; 3. Pump water inlet; 4. Water tank; 5. Overflow pipe; 6. Pressure sensor in the pump; 7. Pressure adjustment knob; 8. Human-machine interface touch screen; 9. Quick plug; 10. Back pressure valve; 11. Flow sensor; 12. Servo motor; 13. Water pump; 14. Large pull rod; 021. Grouting container; 022. Piston; 023. Water inlet end; 024. Cement slurry end; 15. Grouting bucket; 16. Large pull rod Rod bolt; 17, front cover; 18, rear cover; 19, small pull rod; 20, small pull rod bolt; 21, water pipe connector; 22, test chamber water outlet; 23, transparent pipe clamp; 24, test chamber upper cover; 25, column; 26, internal thread hole; 27, test chamber mounting seat; 28, support frame; 29, base; 291, support leg; 031, frame; 30, ball valve; 31, test chamber; 32, pressure sensor; 33, collector; 34, camera; 35, expansion dock; 36, USB interface; 37, computer. DETAILED DESCRIPTION

[0031] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0032] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] The specific embodiments of the present application are described below with reference to the accompanying drawings.

[0034] like Figure 1As shown, the present application provides a test system for testing the flow law of slurry, comprising:

[0035] The water injection pump 13 subsystem 01 comprises a water tank 4 and a water pump 13 connected to each other, wherein the water inlet of the water tank 4 is connected to a water source, and the water inlet of the water pump 13 is connected to the water outlet of the water tank 4;

[0036] The grouting subsystem 02 includes a grouting container 021, wherein a piston 022 is provided in the grouting container 021, wherein the piston 022 divides the grouting container 021 into a water inlet end 023 and a cement slurry end 024, wherein the water inlet end 023 is connected to the water outlet of the water pump 13;

[0037] The test chamber subsystem includes a test chamber 31, wherein the grouting end of the test chamber 31 is connected to the cement slurry end 024 of the grouting container 021;

[0038] The measurement subsystem 04 includes a plurality of measuring devices, a collection device and a display device. The plurality of measuring devices are arranged on the side wall of the test chamber 31 so that the collection device collects the data measured by the measuring device for display by the display device.

[0039] Specifically, the water injection pump 13 subsystem 01 provides water with a certain pressure to the grouting subsystem 02, so that the grouting container 021 pushes the piston 022 to move at a certain pressure, thereby injecting the cement slurry in the grouting container 021 into the test chamber 31 at a certain pressure. The multiple measuring devices of the measuring subsystem 04 are arranged on the side wall of the test chamber 31, so as to measure the test chamber 31 being injected with cement slurry. The acquisition device collects the measured data and transmits it to the display device for display, so that the analysts can view the test data more intuitively, so that the grouting process can be adjusted according to the measurement data, the grouting effect can be improved, and the quality and safety of the project can be ensured. It promotes the continuous innovation and development of grouting technology. The performance and efficiency of grouting technology can be continuously improved to meet the increasingly complex engineering needs.

[0040] Furthermore, the water pump 13 includes a 1.8kW servo motor 12 and a high-pressure plunger pump of size: 0.5L / min-5L / min. The water pump 13 cooperates with various valves to achieve adjustable flow, and the pressure can also be detected and adjusted. The output pipe diameter of the water pump 13 is a G1 / 2 standard pipe, and is connected to a G1 / 2 standard transparent thickened pipe through a water pipe connector 21 with a G1 / 2 standard thread. The thickened pipe is set to be transparent, which is convenient for observing the water injection and grouting conditions. The G1 / 2 standard pipe connector is easy to install and can form a better seal. The maximum loading pressure of the water pump 13 is 2MPa, and the power supply is 220V.

[0041] In some embodiments, Figure 1As shown, a pressure regulating knob 7 and a back pressure valve 10 are provided on the pipeline between the water inlet end 023 and the water outlet of the water pump 13 . The pressure regulating knob 7 is arranged at the water outlet of the water pump 13 , and the back pressure valve 10 is arranged near the water inlet end 023 .

[0042] Specifically, the water pump 13 can realize continuous and uninterrupted water injection, the maximum injection volume is 20L at one time, the pressure adjustment of the water pump 13 is manual adjustment, the pressure range is 0-2MPa, the maximum water injection flow rate is 5L / min, the flow rate is adjustable, and the system can record the flow of the water pump 13 and the pressure at the outlet of the water pump 13. The water supply is a continuous water injection mode, the maximum water flow rate is 5L / min, the water injection pump 13 subsystem 01 has a back pressure valve 10, which can be used for back pressure, and the back pressure action system needs to collect the water supply flow. The back pressure valve 10 is installed on the side of the water pump 13, and the back pressure valve 10 can be manually adjusted. Clockwise means pressure increases, and counterclockwise means pressure decreases. The back pressure valve 10 can adjust the water pressure at the outlet of the water injection pump 13 subsystem 01. In order to prevent the water pressure at the water outlet of the side back pressure valve 10 of the water pump 13 from being too high, the rear compartment of the water pump 13 is equipped with a pressure regulating knob 7 for controlling the maximum water outlet pressure of the side back pressure valve 10. If the outlet pressure exceeds the pressure set by the pressure regulating knob 7, the water will flow back to the water storage container in the pump through the pipeline controlled by the pressure regulating knob 7. For example, the pressure regulating knob 7 is set to 1MPa, and the side back pressure valve 10 of the pump device can control the water outlet pressure at the pump outlet within 1MPa. When the outlet pressure exceeds 1MPa, the water will flow back to the water storage container in the pump through the pipeline controlled by the pressure regulating knob 7. The water pump 13 is equipped with an accumulator, and there is an air bag in the accumulator, which can absorb pulsation, reduce buffering, and ensure smooth water discharge. The water injection pump 13 subsystem 01 can monitor the changes in water pressure and flow at the pump outlet in real time, and can collect data in real time.

[0043] In some embodiments, Figure 1 As shown, an overflow pipe 5 for maintaining the water outlet pressure is also provided between the water pump 13 and the water tank 4.

[0044] Specifically, when the side back pressure valve 10 is tightened, the back pressure adjustment knob 7 is loosened, and then the start button on the human-machine interface touch screen 8 is clicked, the water pump 13 starts to work. Because the back pressure valve 10 is set to a large pressure and the pressure adjustment knob 7 is set to a small pressure, the water will not flow out of the water outlet of the water pump 13, but will all flow back into the water tank 4 through the overflow pipe 5. Then, slowly loosen the pressure adjustment knob 77 until the human-machine interface touch screen 88 displays a pressure of 0.3 MPa, and finally loosen the back pressure valve 1010 until there is no pressure.

[0045] In some embodiments, Figure 1 As shown, a filter 2 is provided on the pipeline between the water inlet of the water tank 4 and the water source.

[0046] Specifically, the filter 2 can filter the external water source before it enters the water tank 4 , thereby reducing impurities in the water entering the water tank 4 and ensuring the normal use of the water pump 13 .

[0047] In some embodiments, Figure 1 As shown, a pump pressure sensor 6 and a flow sensor 11 are arranged in sequence on the pipeline between the water inlet end 023 and the water outlet of the water pump 13, and the pump pressure sensor 6 and the flow sensor 11 are arranged between the pressure regulating knob 7 and the back pressure valve 10.

[0048] Specifically, the pump internal pressure sensor 6 and the flow sensor 11 are arranged between the pressure regulating knob 7 and the back pressure valve 10 , and can accurately measure the pressure and flow of the water pump 13 .

[0049] In an embodiment, the water injection pump 13 subsystem 01 also includes a box body 1, and the water tank 4, water pump 13, filter 2, and overflow pipe 5 are all arranged in the body 1, and the water inlet of the water tank 4, the water outlet of the water pump 13, the pressure adjustment knob 7, the back pressure valve 10, the pump internal pressure sensor 6 and the flow sensor 11 pass through the water tank 4 to the outside of the water tank 4.

[0050] Specifically, the water tank 4, water pump 13, filter 2, and overflow pipe 5 are all arranged in the box body 1 to ensure the service life of each component, and the integration of each component in the box body 1 can ensure the appearance. Only the water inlet of the water tank 4, the water outlet of the water pump 13, the pressure adjustment knob 7, the back pressure valve 10, the pump internal pressure sensor 6, and the flow sensor 11 are passed from the inside of the water tank 4 to the outside of the water tank 4, so that it is convenient to access the water pipe and observe the pressure sensor 32 and the flow sensor 11 to evaluate the operating status of the water pump 13. And each regulating valve is arranged outside the box body 1, so that the test personnel can adjust the regulating valve, which is convenient for testing.

[0051] In this embodiment, the box body 1 is still provided with a human-machine interface touch screen 8, and the pressure adjustment knob 7, the back pressure valve 10, the pump internal pressure sensor 6 and the flow sensor 11 are electrically connected to the human-machine interface touch screen 8 respectively.

[0052] Specifically, a human-machine interactive interface touch screen 8 is provided on the box body 1, and the water pump 13 or the opening of each valve is controlled by the human-machine interactive interface touch screen 8, making the device more intelligent.

[0053] In some embodiments, Figure 2As shown, the grouting container 021 includes a grouting barrel 15, a front end cover 17 and a rear end cover 18 arranged at both ends of the grouting barrel 15, the piston 022 is arranged in the grouting barrel 15, and a plurality of large tie rods 14 are arranged in an array between the front end cover 17 and the rear end cover 18. The plurality of large tie rods 14 are arranged around the grouting barrel 15, the water inlet end 023 is formed between the front end cover 17 and the piston 022, and the cement slurry end 024 is formed between the rear end cover 18 and the piston 022;

[0054] The front end cover 17 is connected to the water outlet of the water pump 13 through a pipeline, and the rear end cover 18 is connected to the grouting end of the test chamber 31 through a pipeline.

[0055] Specifically, the grouting bucket 15 adopts a transparent thickened tube, which can observe and accurately collect the specific grouting process of the grouting container 021. The two ends of the plurality of large tie rods 14 are fixedly connected with the corresponding end covers by the large tie rod 14 bolts, so that the plurality of large tie rods 14 can support the grouting bucket 15, and can also fix the end covers at both ends of the grouting bucket 15, so that the grouting bucket 15 maintains sealing.

[0056] Furthermore, the grouting container 021 is connected to the water pump 13 through a transparent thickened tube and a G1 / 2 standard water pipe connector 21. Because there are many large particles inside the cement, it is easy to wear the pump and cause the sealing to deteriorate, so this problem is solved with the help of the grouting container 021. The grouting container 021 consists of a cylindrical barrel container (that is, the grouting barrel 15, which is made of transparent material to facilitate observation of the grouting state), a middle movable piston 022, and a front cover 17 and a rear cover 18 of the cylindrical barrel container. The cylindrical barrel container is composed of a 5mm thick acrylic plate with an outer diameter of Φ60*600mm. The movable piston 022 in the middle has a specification of Φ50*50mm. There are two small grooves at 10mm and 40mm, and sealing rings are installed in the grooves. There is a 10mm long large groove at 30-40mm, and a guide ring is installed in the large groove. The guide ring can ensure that the piston 022 fits the cylindrical barrel container, plays a stable propulsion role, ensures surface-to-surface contact, and horizontal propulsion. The front cover 17 and the rear cover 18 of the cylindrical barrel container are made of acrylic plate. The lower end of the end cover is a Φ120*30mm cylindrical base 29, and the upper end is a Φ50*15mm cylindrical protrusion. The cylindrical protrusion is embedded in the cylindrical base 29 to achieve a better sealing effect. There is a groove at 5mm on the cylindrical protrusion, and a sealing ring is installed in the groove. The cylindrical protrusion can be inserted into a cylindrical barrel container. There is an internal thread with a G1 / 2 standard thread in the middle of the two cylindrical bases 29 of the end cover, which is used to connect the transparent thickened tube through a pipe connector with a G1 / 2 standard thread external thread, so that the front cover 17 can take in water and the rear cover 18 can discharge slurry. There are also four corresponding holes on the front cover 17 and the rear cover 18 for passing the pull rod. The pull rod is composed of an M10 screw rod, which passes through the front cover 17 and the rear cover 18. The parts of the bolts that extend beyond the front cover 17 and the rear cover 18 are fixed with M10 bolts respectively, in order to connect and tighten the front and rear cover 18 for better sealing and preventing the front and rear cover 18 from slipping off. The sealing ring of the front cover 17 and the front sealing ring of the movable piston 022 form a closed cavity; the sealing ring of the rear cover 18 and the rear sealing ring of the movable piston 022 form a closed cavity. The principle of the grouting pump is similar to that of the syringe. The water pump 13 is connected to the front end of the grouting container 021 through a thickened transparent tube. The piston 022 of the grouting container 021 is pushed to one end of the water inlet of the front cover 17. Then the other end of the movable piston 022 of the grouting container 021 is filled with slurry. The water pump 13 injects water from the water inlet end 023 of the front cover 17 of the grouting container 021. Because the liquid can be regarded as not being compressed, the other end, i.e., the slurry outlet end, will discharge slurry through the thickened transparent tube according to the equivalent volume law. In this process, the amount of water injected is equal to the amount of slurry discharged. The grouting container 021 and the water outlet of the water pump 13 are connected and have the same pressure. Therefore, the flow rate and pressure displayed by the water pump 13 are the flow rate and grouting pressure of the slurry.

[0057] In some embodiments, Figure 3As shown, the test chamber subsystem also includes a frame 031, and the frame 031 includes a base 29 and a support frame 28. The base 29 is provided with a water receiving trough, and the support frame 28 is placed in the water receiving trough. The test chamber 31 is fixed on the support frame 28, and the slurry outlet end of the test chamber 31 is connected to the water receiving trough through a pipeline.

[0058] In this embodiment, the support frame 28 includes a support platform and a column 25 arranged on the support platform, the support platform is provided with a test chamber 31 mounting seat 27, the lower end cover of the test chamber 31 is fixed on the test chamber 31 mounting seat 27, the grouting end of the test chamber 31 is arranged on the lower end cover of the test chamber 31, and the pipeline on the upper end cover of the test chamber 31 bypasses the column 25 and extends into the water receiving trough.

[0059] Specifically, four legs are provided at the bottom of the support platform of the support frame 28, and the four legs are located in the water receiving tank, so that the support platform is away from the water receiving tank. A test chamber 31 mounting seat 27 is provided on the support platform, and a distance is provided between the test chamber 31 mounting seat 27 and the support platform, so that the water pipe on the lower end cover at the bottom of the test chamber 31 installed on the test chamber 31 mounting seat 27 can pass through and be connected to the grouting container 021. The pipeline on the upper end cover of the test chamber 31 extends to the top of the column 25 and goes deep into the water receiving tank, so that the cement slurry injected into the test chamber 31 can flow into the water receiving tank through the water pipe of the upper end cover.

[0060] In some embodiments, four supporting legs 291 are provided at the bottom of the base 29, and the height of the four supporting legs 291 can be adjusted.

[0061] In some embodiments, Figure 3 As shown, a ball valve 30 is provided on the side wall of the base 29 .

[0062] Specifically, the ball valve 30 is used to release the water or cement slurry in the water receiving tank, so that the water receiving tank is easy to clean.

[0063] In some embodiments, the plurality of measuring devices include a plurality of pressure sensors 32 arranged in an array along the sidewall of the test chamber 31 in the height direction;

[0064] Furthermore, the acquisition device includes a collection instrument 33 and a camera 34 . The collection instrument 33 is electrically connected to the plurality of pressure sensors 32 . The shooting end of the camera 34 faces the test chamber 31 .

[0065] Specifically, a plurality of pressure sensors 32 are arranged in an array along the height direction of the test chamber 31, so that the measurement data injected into the test chamber 31 at different heights can be accurately measured, so that the research grouting data is richer. Exemplarily, the plurality of pressure sensors 32 can be four pressure sensors 32. The acquisition device adopts a collection instrument 33. The camera 34 adopts a high-speed camera 34 device. The pressure sensor 32 collection instrument 33 device is a static strain tester of Donghua Testing Company. It is composed of four pressure sensors 32 and computer 37 end software. The static strain tester has 24 channel ports for connecting the four wire connectors at the tail of the pressure sensor 32, and the collection instrument 33 is connected to the computer 37 end through a USB interface 36. Among them, the collection instrument 33 and the computer 37 are also connected through an expansion dock 35, so that more interfaces can be expanded to perform multiple tests. The pressure sensor 32 is composed of a head-end sensor and a 5m-long line with four terminal ends. The head-end sensor is composed of a Φ20*100mm sensor connector and a Φ30*30mm sensor connector with a Φ20*20mm threaded outer thread. Due to the large test pressure, the sensor connector is easy to fall off. The innovative method of vertically punching holes on the side of the sensor connector and inserting pins to fix it is used to prevent the sensor connector from slipping during the experiment. Since the purchased sensor connector is a straight-insert type and easy to slip, the test chamber 31 and the sensor connector are connected through a sensor connector. The sensor connector is provided with a groove, and a sealing ring is installed in the groove to connect the sensor connector and the sensor connector; the sensor connector has a G1 / 2 standard threaded outer thread, and the hole on the side of the test chamber 31 is provided with a G1 / 2 standard threaded inner thread. The outer thread is connected to the inner thread after winding the raw tape, thereby connecting the sensor connector and the test chamber 31, and thus connecting the pressure sensor 32 and the test chamber 31 through the sensor connector. The acquisition instrument 33 software can obtain the pressure sensor 32 data in real time.

[0066] The high-speed camera 34 device consists of a camera stand, a camera 34, a connecting line and a computer 37 software. The camera stand has a vertical telescopic rod that can adjust the camera height; there is a bubble device to adjust the camera level; and it is connected to the camera through a thread. The camera 34 is connected to the computer 37 software through a connecting line to transmit data in real time. The camera zoom in and out, exposure, white balance and measurement functions can be adjusted through the computer 37.

[0067] In summary, most of the test systems use G1 / 2 standard threads to achieve uniformity; the connecting pipes use transparent thickened pipes, and the grouting container 021 and the test chamber 31 use transparent acrylic plates, which make the process transparent and clearly visible, and realize visual water injection and grouting. The test system adopts a convenient connection and disassembly method, especially the intermediate container and the test chamber 31 can be disassembled into multiple parts, which is convenient for filling slurry and simulated rock particles. The test system can simulate water injection alone, grouting alone, or aquifer grouting, that is, water injection first and then grouting. To simulate water injection alone, it only needs to connect the water injection pump 13 to the test chamber 31 through a transparent thickened pipe, and then connect the pressure sensor 32, the acquisition instrument 33 and the high-speed camera 34; to simulate grouting alone, it only needs to add an intermediate container between the water pump 13 and the test chamber 31 to achieve it; to simulate aquifer grouting, a water injection pump 13 and a grouting pump can be required at the same time, that is, two water injection pumps 13 and a set of intermediate containers. The water injection pump 13 and the grouting pump are connected to the test chamber 31 through a tee. A ball valve 30 is also connected between the water injection pump 13 and the tee to prevent slurry from entering. A ball valve 30 is connected between the grouting pump and the tee to prevent water from entering.

[0068] The specific implementation process of this system is as follows:

[0069] Before the test begins, first determine the simulated rock mass particle size, particle type, grouting pressure, pump flow rate and slurry ratio related parameters, and determine whether to inject from top to bottom or from bottom to top. For example, set the particle type to one, the particle size to 2-3mm, the grouting pressure to 0.3mpa, the pump flow rate to 150ml / min, the slurry is made of water and ordinary Portland cement with a water-cement ratio of 0.8:1, injected from the lower end cover 27 of the test chamber 31, and flows out from the upper end cover 24 of the test chamber 31. The purpose is to fill a layer of slurry first and then inject it evenly upward.

[0070] Check whether the area around the water injection pump 1 is safe to operate and free of obstacles, and ensure that the motor operates normally and can move and retreat normally. Test whether the water injection pump 1 is discharging water normally, by clicking the flow rate plus or minus option on the human-machine interface touch screen 8 to adjust the flow rate to 150ml / min, and then click Start to start discharging water. After confirming that the water can be discharged normally, click Close on the human-machine interface touch screen 8 to stop discharging water. Use USB to connect the water injection pump 1 and the computer end, open the pump system software on the computer end and connect the pump. After the connection is completed, the flow rate data and pressure data of the pump can be observed in real time.

[0071] The pump system has a back pressure valve 10 and a pressure adjustment knob 7. To adjust the outlet pressure to 0.3 MPa, first tighten the side back pressure valve 10, loosen the back pressure adjustment knob 7, and then click on the human-machine interface touch screen 8 to open. Because the back pressure valve 10 is set to a large pressure and the pressure adjustment knob 7 is set to a small pressure, the water will not flow out of the pump outlet, but will all flow back to the water tank in the pump through the overflow pipe 5. Then, slowly loosen the pressure adjustment knob 7 until the human-machine interface touch screen 8 displays a pressure of 0.3 MPa, and finally loosen the back pressure valve 10 to no pressure, click Stop on the human-machine interface touch screen 8, then the water outlet pressure will be 0 at the beginning, but grouting is a closed process. As the water output increases, the pressure in the pipe will increase until it increases to 0.3 MPa. The excess 0.3 MPa of water will flow back to the water tank from the overflow pipe 5, so that the grouting pressure can be kept at 0.3 MPa.

[0072] Next, connect the grouting container 021, first take a transparent thickened tube of appropriate length, then wrap an appropriate amount of raw tape on the pipe connector thread, connect the transparent thickened tube to the front cover 17 of the grouting container 021, and connect the transparent thickened tube to the rear cover 18 in the same way. The transparent thickened tube of the front cover 17 can be connected to the transparent thickened tube at the pump outlet through the quick plug 9, and the transparent thickened tube of the rear cover 18 can be connected to the transparent thickened tube of the lower end cover 27 of the test chamber 31 through the quick plug. Then insert the movable piston to the front end of the grouting container 021, and then cover the front cover 17. If the movable piston does not move to the front end, you can push it with an air pump, because there must be no air on the water inlet side of the grouting container 021. If there is air, the air is easily compressed, and the movable piston will move in sections, and the movement will be discontinuous.

[0073] Then the test chamber 31 is connected. Like the grouting container 021, the upper end cover 24 and the lower end cover 27 of the test chamber 31 are connected to a transparent thickened tube through a water pipe connector wrapped with raw tape. The transparent thickened tube of the upper end cover 24 can be longer to facilitate the discharge of water and slurry to the water receiving tank 29. After the connection is completed, a cap-shaped dispersion piece with a hole diameter of 1 mm is placed on the protrusion of the lower end cover 27. The cover of the cap-shaped dispersion piece faces downward, which prevents particles from leaking out on the one hand, and facilitates the dispersion of slurry and uniform slurry discharge on the other hand. Then put a large sealing ring on the protrusion of the lower end cover 27, and then install the test chamber 31 with four holes for end face sealing; there are two small sealing rings on the protrusion of the lower end cover 27 for the purpose of axial sealing.

[0074] Then, the test chamber 31 and the grouting container 021 are respectively marked with scales with a ruler to facilitate observation of the slurry movement distance and the input and output volume.

[0075] The next step is to insert the four sensor connectors into the four sensors respectively, wrap an appropriate amount of raw tape on the four sensor connectors, and tighten them on the four G1 / 2 standard internal thread holes 26 of the test chamber 31. Then fill in 2-3mm particles, vibrate while filling, and use relevant equipment to compact during the process, according to the needs. After filling, cover the upper end cover 24 of the test chamber 31. Then four small pull rods 19 pass through the four holes of the upper end cover 24 of the test chamber 31, and tighten them on the four small screw holes of the lower end cover 27 respectively. Then stand the support platform 28 on the water trough 29, and then pass four bolts through the four large threads of the lower end cover 27 of the test chamber 31, and tighten them on the support platform 28.

[0076] Then, the computer and the collector 33 are connected through the USB interface, and the wires at the ends of the four sensors are connected to the four interfaces 1, 2, 3, and 4 of the collector 33 in order from bottom to top. The computer is connected to the collector 33 to obtain the data of the pressure sensor 32 in real time. The high-speed camera 34 is connected through the USB interface to take real-time video or take snapshots at intervals. The high-speed camera 34 is placed in a suitable position facing the test chamber 31.

[0077] Then, cement slurry is prepared according to the water-cement ratio of water to ordinary silicate cement of 0.8:1, and stirred while preparing. After the preparation is completed, the cement is filled into the grouting container 021 from the rear port of the grouting container 021, and then the rear end cover 18 is tightly closed. The four large tie rods 14 are respectively passed through the four holes on the front end cover 17 and the rear end cover 18, and then the eight ends of the four large tie rods 14 are respectively fixed with eight large tie rod bolts 16, thereby fixing the grouting container 021.

[0078] Next, connect the water injection pump to the front end cover 17 of the grouting container 021 through a quick plug. Before connecting, fill the transparent thickened tube with water to reduce air as much as possible; connect the rear end cover 18 of the grouting container 021 and the lower end cover 27 of the test chamber 31 through a quick plug.

[0079] Ensure that all pipe joints in the system are locked properly, there is no water leakage in the pipeline, and the safety switch is in working condition.

[0080] Ensure that all sealing bolts of the simulation system are tightened and the back pressure valve is in a pressure-free state.

[0081] Check that all pressure sensor 32 lines are connected normally.

[0082] Check that the mass flow meter circuit is normal and the display is ready.

[0083] Before the test, the computer control software is used normally and the data acquisition control connection line is fault-free. Ensure that all test functions are correct and the test data is accurate.

[0084] Check that all start / stop switches are connected properly, are not loose, are not damaged, and that data collection is correct.

[0085] After ensuring that everything is correct, click on the pump system to start saving data; click on the high-speed camera 34 software to start recording or continuous snapshot; click on the collector 33 software to start collecting. Then click on the start on the human-machine interface touch screen 8, and then the grouting starts. During this process, the water injection pump continuously discharges water to push the movable piston to move toward the rear end of the grouting container 021. The principle has been introduced above. According to the equivalent volume method, the slurry is discharged from the middle hole of the rear end cover 18 until it enters the test chamber 31 through the middle hole of the lower end cover 27 of the test chamber 31, and then the grouting time related parameters are determined according to the required conditions.

[0086] After the grouting is completed, click Stop on the touch screen 8 of the human-machine interface, click Stop on the software of the collector 33, click Stop recording or capturing on the software of the high-speed camera 34, and click Stop data saving on the software of the pump system. The data related to the three devices are saved in the corresponding folders.

[0087] After all the data are processed and saved, wait for a short period of time, such as ten minutes, to release the pressure in the test chamber 31 and the grouting container. First, remove the quick plug between the rear end cover 18 of the grouting container 021 and the lower end cover 27 of the test chamber 31, then remove the four bolts connecting the test chamber 31 and the support platform 28, then take out the test chamber 31, remove the lower end cover 27, and sample the grouting particle column in the test chamber 31 to evaluate the grouting effect. The specific test effect can be seen Figure 4 and Figure 5 .

[0088] Clean the slurry in time to prevent solidification. The residual slurry in the grouting container 021 can be removed by turning on the water pump to continue injecting water to push out the slurry, thereby facilitating cleaning.

[0089] Another embodiment may also include: a water injection pump injects water into the test chamber 31 filled with particles from the lower end of the test chamber 31. The water pressure on the pump will be very small in the uncompacted state, and water will easily flow out from the upper end cover. After a period of water injection, a separation layer will appear. After the separation layer is stable, the upper end cover is opened to fill the separation layer with particles, and the operation is repeated until the corresponding pressure is reached on the pump. For example, when the pressure on the pump is displayed as 0.1 MPa, I think the compaction is completed. Then, according to the above operation, adjust the pressure adjustment knob at the back to 0.1 MPa, and then loosen the back pressure valve. If there is water reflux, it means that the compaction degree has reached the expected effect.

[0090] Based on the same inventive concept, Figure 6 As shown, the present application also provides a test method for testing the flow law of slurry, which is applicable to any of the test systems for testing the flow law of slurry described above, and comprises the following steps:

[0091] Step 102, adjusting the pressure of the water injection pump subsystem according to a preset pressure value, so that the water injection pump subsystem injects water with a preset pressure value into the grouting container;

[0092] Step 104: the grouting container injects cement slurry with a preset pressure value into the test chamber, and a plurality of measuring devices and collecting devices collect and transmit measured data to a display device, and the display device draws a curve graph according to the measured data and displays it.

[0093] Specifically, the preset pressure value can be 0.3 MPa. Before the test begins, first determine the simulated rock mass particle size, particle type, grouting pressure, pump flow rate and slurry ratio related parameters, and determine whether to inject from top to bottom or from bottom to top. For example, set the particle type to one, the particle size to 2-3 mm, the grouting pressure to 0.3 MPa, the pump flow rate to 150 ml / min, the slurry is made of water and ordinary Portland cement with a water-cement ratio of 0.8:1, and is injected from the lower end cover 27 of the test chamber 31 and flows out from the upper end cover 24 of the test chamber 31. The purpose is to fill a layer of slurry first and then inject it evenly upward.

[0094] Check whether the area around the water injection pump 1 is safe to operate and free of obstacles, and ensure that the motor operates normally and can move and retreat normally. Test whether the water injection pump 1 is discharging water normally, by clicking the flow rate plus or minus option on the human-machine interface touch screen 8 to adjust the flow rate to 150ml / min, and then click Start to start discharging water. After confirming that the water can be discharged normally, click Close on the human-machine interface touch screen 8 to stop discharging water. Use USB to connect the water injection pump 1 and the computer end, open the pump system software on the computer end and connect the pump. After the connection is completed, the flow rate data and pressure data of the pump can be observed in real time.

[0095] The pump system has a back pressure valve 10 and a pressure adjustment knob 7. To adjust the outlet pressure to 0.3 MPa, first tighten the side back pressure valve 10, loosen the back pressure adjustment knob 7, and then click on the human-machine interface touch screen 8 to open. Because the back pressure valve 10 is set to a large pressure and the pressure adjustment knob 7 is set to a small pressure, the water will not flow out of the pump outlet, but will all flow back to the water tank in the pump through the overflow pipe 5. Then, slowly loosen the pressure adjustment knob 7 until the human-machine interface touch screen 8 displays a pressure of 0.3 MPa, and finally loosen the back pressure valve 10 to no pressure, click Stop on the human-machine interface touch screen 8, then the water outlet pressure will be 0 at the beginning, but grouting is a closed process. As the water output increases, the pressure in the pipe will increase until it increases to 0.3 MPa. The excess 0.3 MPa of water will flow back to the water tank from the overflow pipe 5, so that the grouting pressure can be kept at 0.3 MPa.

[0096] Next, connect the grouting container 021, first take a transparent thickened tube of appropriate length, then wrap an appropriate amount of raw tape on the pipe connector thread, connect the transparent thickened tube to the front cover 17 of the grouting container 021, and connect the transparent thickened tube to the rear cover 18 in the same way. The transparent thickened tube of the front cover 17 can be connected to the transparent thickened tube at the pump outlet through the quick plug 9, and the transparent thickened tube of the rear cover 18 can be connected to the transparent thickened tube of the lower end cover 27 of the test chamber 31 through the quick plug. Then insert the movable piston to the front end of the grouting container 021, and then cover the front cover 17. If the movable piston does not move to the front end, you can push it with an air pump, because there must be no air on the water inlet side of the grouting container 021. If there is air, the air is easily compressed, and the movable piston will move in sections, and the movement will be discontinuous.

[0097] Then the test chamber 31 is connected. Like the grouting container 021, the upper end cover 24 and the lower end cover 27 of the test chamber 31 are connected to a transparent thickened tube through a water pipe connector wrapped with raw tape. The transparent thickened tube of the upper end cover 24 can be longer to facilitate the discharge of water and slurry to the water receiving tank 29. After the connection is completed, a cap-shaped dispersion piece with a hole diameter of 1 mm is placed on the protrusion of the lower end cover 27. The cover of the cap-shaped dispersion piece faces downward, which prevents particles from leaking out on the one hand, and facilitates the dispersion of slurry and uniform slurry discharge on the other hand. Then put a large sealing ring on the protrusion of the lower end cover 27, and then install the test chamber 31 with four holes for end face sealing; there are two small sealing rings on the protrusion of the lower end cover 27 for the purpose of axial sealing.

[0098] Then, the test chamber 31 and the grouting container 021 are respectively marked with scales with a ruler to facilitate observation of the slurry movement distance and the input and output volume.

[0099] The next step is to insert the four sensor connectors into the four sensors respectively, wrap an appropriate amount of raw tape on the four sensor connectors, and tighten them on the four G1 / 2 standard internal thread holes 26 of the test chamber 31. Then fill in 2-3mm particles, vibrate while filling, and use relevant equipment to compact during the process, according to the needs. After filling, cover the upper end cover 24 of the test chamber 31. Then four small pull rods 19 pass through the four holes of the upper end cover 24 of the test chamber 31, and tighten them on the four small screw holes of the lower end cover 27 respectively. Then stand the support platform 28 on the water trough 29, and then pass four bolts through the four large threads of the lower end cover 27 of the test chamber 31, and tighten them on the support platform 28.

[0100] Then, the computer and the collector 33 are connected through the USB interface, and the wires at the ends of the four sensors are connected to the four interfaces 1, 2, 3, and 4 of the collector 33 in order from bottom to top. The computer is connected to the collector 33 to obtain the data of the pressure sensor 32 in real time. The high-speed camera 34 is connected through the USB interface to take real-time video or take snapshots at intervals. The high-speed camera 34 is placed in a suitable position facing the test chamber 31.

[0101] Then, cement slurry is prepared according to the water-cement ratio of water to ordinary silicate cement of 0.8:1, and stirred while preparing. After the preparation is completed, the cement is filled into the grouting container 021 from the rear port of the grouting container 021, and then the rear end cover 18 is tightly closed. The four large tie rods 14 are respectively passed through the four holes on the front end cover 17 and the rear end cover 18, and then the eight ends of the four large tie rods 14 are respectively fixed with eight large tie rod bolts 16, thereby fixing the grouting container 021.

[0102] Next, connect the water injection pump to the front end cover 17 of the grouting container 021 through a quick plug. Before connecting, fill the transparent thickened tube with water to reduce air as much as possible; connect the rear end cover 18 of the grouting container 021 and the lower end cover 27 of the test chamber 31 through a quick plug.

[0103] Ensure that all pipe joints in the system are locked properly, there is no water leakage in the pipeline, and the safety switch is in working condition.

[0104] Ensure that all sealing bolts of the simulation system are tightened and the back pressure valve is in a pressure-free state.

[0105] Check that all pressure sensor 32 lines are connected normally.

[0106] Check that the mass flow meter circuit is normal and the display is ready.

[0107] Before the test, the computer control software is used normally and the data acquisition control connection line is fault-free. Ensure that all test functions are correct and the test data is accurate.

[0108] Check that all start / stop switches are connected properly, are not loose, are not damaged, and that data collection is correct.

[0109] After ensuring that everything is correct, click on the pump system to start saving data; click on the high-speed camera 34 software to start recording or continuous snapshot; click on the collector 33 software to start collecting. Then click on the start on the human-machine interface touch screen 8, and then the grouting starts. During this process, the water injection pump continuously discharges water to push the movable piston to move toward the rear end of the grouting container 021. The principle has been introduced above. According to the equivalent volume method, the slurry is discharged from the middle hole of the rear end cover 18 until it enters the test chamber 31 through the middle hole of the lower end cover 27 of the test chamber 31, and then the grouting time related parameters are determined according to the required conditions.

[0110] After the grouting is completed, click Stop on the touch screen 8 of the human-machine interface, click Stop on the software of the collector 33, click Stop recording or capturing on the software of the high-speed camera 34, and click Stop data saving on the software of the pump system. The data related to the three devices are saved in the corresponding folders.

[0111] After all the data are processed and saved, wait for a short period of time, such as ten minutes, to release the pressure in the test chamber 31 and the grouting container. First, remove the quick plug between the rear end cover 18 of the grouting container 021 and the lower end cover 27 of the test chamber 31, then remove the four bolts connecting the test chamber 31 and the support platform 28, then take out the test chamber 31, remove the lower end cover 27, and sample the grouting particle column in the test chamber 31 to evaluate the grouting effect. The specific test effect can be seen Figure 4 and Figure 5 .

[0112] Clean the slurry in time to prevent solidification. The residual slurry in the grouting container 021 can be removed by turning on the water pump to continue injecting water to push out the slurry, thereby facilitating cleaning.

[0113] Another embodiment may also include: a water injection pump injects water into the test chamber 31 filled with particles from the lower end of the test chamber 31. The water pressure on the pump will be very small in the uncompacted state, and water will easily flow out from the upper end cover. After a period of water injection, a separation layer will appear. After the separation layer is stable, the upper end cover is opened to fill the separation layer with particles, and the operation is repeated until the corresponding pressure is reached on the pump. For example, when the pressure on the pump is displayed as 0.1 MPa, I think the compaction is completed. Then, according to the above operation, adjust the pressure adjustment knob at the back to 0.1 MPa, and then loosen the back pressure valve. If there is water reflux, it means that the compaction degree has reached the expected effect.

[0114] It should be noted that the method of the embodiment of the present application can be performed by a single device, such as a computer or server. The method of this embodiment can also be applied to a distributed scenario and completed by multiple devices cooperating with each other. In the case of such a distributed scenario, one of the multiple devices can only perform one or more steps in the method of the embodiment of the present application, and the multiple devices will interact with each other to complete the described method.

[0115] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0116] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments and methods, the present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, an experimental method for testing the flow law of slurry as described in any of the above embodiments is implemented.

[0117] Figure 7 A more specific schematic diagram of the hardware structure of an electronic device provided in this embodiment is shown, and the device may include: a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040, and a bus 1050. The processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040 are connected to each other through the bus 1050 in the device.

[0118] The processor 1010 can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

[0119] The memory 1020 may be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 1020 may store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program codes are stored in the memory 1020 and are called and executed by the processor 1010.

[0120] The input / output interface 1030 is used to connect the input / output module to realize information input and output. The input / output module can be configured in the device as a component (not shown in the figure), or it can be externally connected to the device to provide corresponding functions. The input device may include a keyboard, a mouse, a touch screen, a microphone, various sensors, etc., and the output device may include a display, a speaker, a vibrator, an indicator light, etc.

[0121] The communication interface 1040 is used to connect a communication module (not shown) to realize communication interaction between the device and other devices. The communication module can realize communication through a wired mode (such as USB, network cable, etc.) or a wireless mode (such as mobile network, WIFI, Bluetooth, etc.).

[0122] The bus 1050 includes a path that transmits information between the various components of the device (eg, the processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040).

[0123] It should be noted that, although the above device only shows the processor 1010, the memory 1020, the input / output interface 1030, the communication interface 1040 and the bus 1050, in the specific implementation process, the device may also include other components necessary for normal operation. In addition, it can be understood by those skilled in the art that the above device may also only include the components necessary for implementing the embodiments of the present specification, and does not necessarily include all the components shown in the figure.

[0124] The electronic device of the above embodiment is used to implement a corresponding test method for testing the flow law of slurry in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0125] Based on the same inventive concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides a non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute an experimental method for testing the flow law of slurry as described in any of the above embodiments.

[0126] The computer-readable medium of this embodiment includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, read-only compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device.

[0127] The computer instructions stored in the storage medium of the above embodiment are used to enable the computer to execute an experimental method for testing the flow law of slurry as described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0128] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0129] In addition, to simplify the description and discussion, and in order not to make the embodiments of the present application difficult to understand, the known power supply / ground connection with the integrated circuit (IC) chip and other components may or may not be shown in the provided drawings. In addition, the device can be shown in the form of a block diagram to avoid making the embodiments of the present application difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform to be implemented in the embodiments of the present application (that is, these details should be fully within the scope of understanding of those skilled in the art). In the case of elaborating specific details (e.g., circuits) to describe exemplary embodiments of the present application, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details or when these specific details are changed. Therefore, these descriptions should be considered to be illustrative rather than restrictive.

[0130] Although the present application has been described in conjunction with specific embodiments of the present application, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

[0131] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A test system for testing the flow law of slurry, characterized in that: include: A water injection pump subsystem (01) comprises a water tank (4) and a water pump (13) connected to each other, wherein the water inlet of the water tank (4) is connected to a water source, and the water inlet of the water pump (13) is connected to the water outlet of the water tank (4); The grouting subsystem (02) comprises a grouting container (021), wherein a piston (022) is provided in the grouting container (021), wherein the piston (022) divides the grouting container (021) into a water inlet end (023) and a cement slurry end (024), wherein the water inlet end (023) is connected to a water outlet of the water pump (13); A test chamber subsystem comprises a test chamber (31), wherein a grouting end of the test chamber (31) is connected to a cement slurry end (024) of the grouting container (021); The measurement subsystem (04) includes a plurality of measuring devices, a collection device and a display device. The plurality of measuring devices are arranged on the side wall of the test chamber (31), so that the collection device collects data measured by the measuring device for display by the display device.

2. A test system for testing the flow law of slurry according to claim 1, characterized in that: A pressure regulating knob (7) and a back pressure valve (10) are provided on the pipeline between the water inlet end (023) and the water outlet of the water pump (13); the pressure regulating knob (7) is arranged at the water outlet of the water pump (13), and the back pressure valve (10) is arranged near the water inlet end (023).

3. A test system for testing the flow law of slurry according to claim 1, characterized in that: An overflow pipe (5) for maintaining water outlet pressure is also provided between the water pump (13) and the water tank (4).

4. A test system for testing the flow law of slurry according to claim 2, characterized in that: A pump pressure sensor (6) and a flow sensor (11) arranged in sequence are provided on the pipeline between the water inlet end (023) and the water outlet of the water pump (13); the pump pressure sensor (6) and the flow sensor (11) are arranged between the pressure regulating knob (7) and the back pressure valve (10).

5. A test system for testing the flow law of slurry according to claim 1, characterized in that: The grouting container (021) comprises a grouting barrel (15), a front end cover (17) and a rear end cover (18) arranged at both ends of the grouting barrel (15), the piston (022) is arranged in the grouting barrel (15), a plurality of large tie rods (14) are arranged in an array between the front end cover (17) and the rear end cover (18), and the plurality of large tie rods (14) are arranged around the grouting barrel (15), the water inlet end (023) is formed between the front end cover (17) and the piston (022), and the cement slurry end (024) is formed between the rear end cover (18) and the piston (022); The front end cover (17) is connected to the water outlet of the water pump (13) through a pipeline, and the rear end cover (18) is connected to the grouting end of the test chamber (31) through a pipeline.

6. A test system for testing the flow law of slurry according to claim 1, characterized in that: The test chamber subsystem also includes a frame (031), the frame (031) includes a base (29) and a support frame (28), the base (29) is provided with a water receiving trough, the support frame (28) is placed in the water receiving trough, the test chamber (31) is fixed on the support frame (28), and the slurry outlet end of the test chamber (31) is connected to the water receiving trough through a pipeline.

7. A test system for testing the flow law of slurry according to claim 6, characterized in that: The support frame (28) comprises a support platform and a column (25) arranged on the support platform, a test chamber mounting seat (27) is provided on the support platform, a lower end cover of the test chamber (31) is fixed on the test chamber mounting seat (27), a grouting end of the test chamber (31) is arranged on the lower end cover of the test chamber (31), and a pipeline on the upper end cover of the test chamber (31) bypasses the column (25) and extends into the water receiving trough.

8. The test system for testing the flow law of slurry according to claim 1, characterized in that: The plurality of measuring devices include a plurality of pressure sensors (32) arranged in an array along the sidewall of the test chamber (31) in the height direction.

9. A test system for testing the flow law of slurry according to claim 1, characterized in that: The acquisition device comprises an acquisition instrument (33) and a camera (34); the acquisition instrument (33) is electrically connected to the plurality of pressure sensors (32); and the shooting end of the camera (34) faces the test chamber (31).

10. A test method for testing the flow law of slurry, applicable to a test system for testing the flow law of slurry according to any one of claims 1 to 9, characterized in that: include: Adjust the pressure of the water injection pump subsystem according to the preset pressure value, so that the water injection pump subsystem injects water with the preset pressure value into the grouting container; The grouting container injects cement slurry with a preset pressure value into the test chamber, and a plurality of measuring devices and collecting devices collect and transmit measured data to a display device, and the display device draws a curve graph according to the measured data and displays it.

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