A visualized slurry diffusion simulation device

Abstract

The present application provides a kind of visual slurry diffusion simulation device, comprising: test tank body, including upper cover, lower cover and the receiving column between the upper cover and the lower cover, the receiving column is configured as hollow column, to form receiving cavity between the upper cover and the lower cover, the central part of the upper cover is equipped with grouting pipe, the upper cover is also equipped with observation tube, the number of observation tube is multiple, multiple observation tube is arranged around the grouting pipe, the grouting pipe and the observation tube are communicated with the receiving cavity, the end of the observation tube outside the receiving cavity is detachably connected with the blocking cap;Grouting mechanism and driving mechanism cooperate, for injecting slurry into receiving cavity.Such, through visual slurry diffusion simulation device, slurry diffusion process can be accurately predicted, grouting process parameters are optimized, and more efficient, reliable reinforcement effect is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of grouting, in particular to a visualized grout diffusion simulation device. BACKGROUND

[0002] In the related art, with the wide application of grouting engineering, grouting technology is also constantly progressing. However, the concealment in actual engineering and the complex fracture morphology inside the rock mass make it difficult to predict the flow of grout, so it is difficult to accurately describe the diffusion law of grout in fractured rock mass. At present, the diffusion range of grout mostly depends on engineering experience for judgment, which makes the evaluation of grouting reinforcement effect not accurate enough. The existing on-site grouting usually relies on experience guidance or relies on experience formula to predict the grout diffusion process, which leads to the research on grouting diffusion mechanism lagging behind the actual application, resulting in that the engineering construction relies on experience and has certain subjectivity, which is difficult to ensure the stability and reliability of the engineering quality. SUMMARY

[0003] Therefore, the present application aims to provide a visualized grout diffusion simulation device to accurately predict the grout diffusion process and optimize the grouting process, so as to at least partially solve the problems in the related art.

[0004] In order to achieve the above purpose, the present application provides a visualized grout diffusion simulation device, which comprises:

[0005] The test tank body comprises an upper top cover, a lower top cover and a receiving column located between the upper top cover and the lower top cover. The receiving column is configured as a hollow column to form a receiving cavity between the upper top cover and the lower top cover. The center part of the upper top cover is provided with a grouting pipe. The upper top cover is also provided with observation pipes. The number of observation pipes is multiple. The observation pipes are arranged around the grouting pipe. The grouting pipe and the observation pipes are in communication with the receiving cavity. One end of the observation pipe located outside the receiving cavity is detachably connected with a blocking cap.

[0006] The grouting mechanism comprises a first connecting pipe, a shell and a piston. The shell has a cavity extending along the length direction of the shell. The piston is movably arranged in the cavity along the length direction of the shell. The first end of the piston and the shell form a containing space for storing grout. One end of the first connecting pipe is connected to the shell and in communication with the containing space. The other end of the first connecting pipe is connected to one end of the grouting pipe located outside the receiving cavity.

[0007] The driving mechanism is used to drive the movement of the piston to change the volume of the containing space.

[0008] Optionally, a stress sensor is arranged on the inner wall surface of the receiving cavity.

[0009] Optionally, a pressure adjusting block is further included, which is arranged in the receiving cavity and adheres to the lower cover.

[0010] Optionally, the test tank further includes connecting screws, the number of which is multiple, the multiple connecting screws are arranged around the outside of the receiving column, the upper cover and the lower cover are each provided with a through hole for the connecting screws to pass through, and each of the connecting screws is threadedly connected with multiple nuts for clamping the upper cover and the lower cover.

[0011] Optionally, the shell includes a first end cover, a second end cover, and a containing tube, two ends of the containing tube arranged opposite along the length direction of the containing tube are respectively provided with a first flange for connecting the first end cover and a second flange for connecting the second end cover, the first end cover, the second end cover, and the containing tube jointly form the cavity, the first connecting pipe is connected to the first end cover, a pushing space for receiving the pushing liquid is formed between the second end of the piston, the second end cover, and part of the containing tube, the second end cover is provided with a first injection pipe for the pushing liquid to flow into the pushing space, and the containing tube is provided with a first overflow pipe, and the first overflow pipe communicates with the pushing space.

[0012] Optionally, the grouting mechanism further includes a second injection pipe, a funnel, and a second overflow pipe, one end of the second injection pipe is connected to the containing tube, the other end is connected to the funnel, so that the funnel communicates with the containing space, and the second overflow pipe is connected to the first end cover, and the second overflow pipe communicates with the containing space.

[0013] Optionally, the first injection pipe, the first overflow pipe, the second injection pipe, and the second overflow pipe are each provided with a valve.

[0014] Optionally, the driving mechanism includes a water inlet pipe, a water outlet pipe, a water pump, a filter, and a water tank, the water inlet pipe is connected to the water inlet end of the water pump, the water outlet end of the water pump is connected to the water tank through a conveying pipeline, one end of the water outlet pipe is connected to the water tank, the other end is connected to the first injection pipe through a second connecting pipe, and the filter is arranged on the water outlet pipe.

[0015] Optionally, the driving mechanism further includes a pressure relief pipeline, the pressure relief pipeline is connected between the water inlet pipe and the water tank, a connection part of the pressure relief pipeline and the water inlet pipe is provided with a pressure relief valve, and the water inlet pipe is further provided with a back pressure valve, a pressure sensor, and a flow sensor.

[0016] Optionally, a trolley is further included, the trolley is provided with a connecting piece for connecting the shell, the trolley is provided with a receiving groove and the opening of the receiving groove is below the shell, the trolley is provided with a flushing pipe and a discharge pipe which are in communication with the receiving groove.

[0017] Through the technical scheme, the upper cover, the lower cover and the receiving column between the upper cover and the lower cover can form a receiving cavity, the filling material is placed in the receiving cavity to simulate the fractured rock mass to be grouted, the grouting pipe is installed on the upper cover, one end of the grouting pipe extends into the filling material, so that the slurry flowing into the receiving cavity through the grouting pipe can efficiently fill the cracks of the fractured rock mass, and the multiple observation pipes arranged around the grouting pipe on the upper cover can clearly observe the diffusion of the slurry, that is, the piston is driven to move by the driving mechanism, so as to change the volume of the containing space storing the slurry, so that the slurry stored in the containing space is extruded by the piston, so that the slurry flows into the receiving cavity through the first connecting pipe and the grouting pipe, and one end of the observation pipe extends into the receiving cavity, when the grouting operation is performed, part of the slurry flows out of the receiving cavity through the observation pipe along which the slurry flows, and the tester can determine the diffusion information of the slurry by observing whether the slurry flows out of the observation pipes at different positions.

[0018] Other features and advantages of the present disclosure will be described in detail in the following detailed description section. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0020] Figure 1 is a structural schematic view of a visualized slurry diffusion simulation device provided in an exemplary embodiment of the present disclosure;

[0021] Figure 2 is a structural schematic view of a box provided in an exemplary embodiment of the present disclosure;

[0022] Figure 3 is a structural schematic view of a driving mechanism provided in an exemplary embodiment of the present disclosure;

[0023] Figure 4 is a structural schematic view of a test tank body without placing a filling material in an exemplary embodiment of the present disclosure;

[0024] Figure 5This is a schematic diagram of the structure of the test tank provided in an exemplary embodiment of this disclosure;

[0025] Figure 6 This is a schematic diagram of the grouting mechanism and the storage vehicle provided in the exemplary embodiments of this disclosure;

[0026] Figure 7 This is a schematic diagram of the internal structure of the grouting mechanism provided in an exemplary embodiment of this disclosure;

[0027] Figure 8 This is a schematic diagram of one of the structures provided in the exemplary embodiments of this disclosure, in which an observation tube is installed on the top cover;

[0028] Figure 9 This is a schematic diagram of another structure provided in an exemplary embodiment of the present disclosure, in which an observation tube is installed on the top cover.

[0029] Explanation of reference numerals in the attached figures

[0030] 1-Test tank body; 101-Upper top cover; 102-Lower top cover; 103-Receiving column; 1031-Receiving cavity; 104-Grouting pipe; 105-Observation pipe; 1051-Sealing cap; 2-Shell body; 201-First end cover; 202-Second end cover; 203-Receiving pipe; 2031-First flange; 2032-Second flange; 204-First injection pipe; 205-First overflow pipe; 206-Second injection pipe; 207-Function funnel; 208-Second overflow pipe; 3-Piston; 301-Receiving space; 302-Pushing space; 4-First connecting pipe; 5-Stress sensor; 6-Pressure regulator 7-Section block; 701-Connecting screw; 8-Nut; 9-Valve; 9-Drive mechanism; 901-Inlet pipe; 902-Outlet pipe; 903-Water pump; 904-Filter; 905-Water tank; 906-Pressure relief pipe; 907-Back pressure valve; 908-Pressure sensor; 909-Flow sensor; 910-Pressure relief valve; 911-Box body; 912-Power switch; 913-Human machine interface touch screen; 10-Storage cart; 1001-Storage slot; 1002-Flushing pipe; 1003-Discharge pipe; 11-Data acquisition instrument; 12-Display device; 13-Second connecting pipe; 14-Filling material. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0032] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] With the widespread application of grouting engineering, grouting technology is constantly improving. However, the concealment of grout in actual engineering projects and the complex fracture morphology within rock masses make grout flow difficult to predict, thus hindering the accurate description of grout diffusion patterns within fractured rock masses. Currently, the grout diffusion range is mostly judged based on engineering experience, making the evaluation of grouting reinforcement effects insufficiently precise. Existing field grouting methods are typically guided by experience or rely on empirical formulas to predict the grout diffusion process, resulting in research on grout diffusion mechanisms lagging behind practical applications. Therefore, in-depth research on grouting control methods is urgently needed. Grouting, as an important means of mine water hazard prevention and control, is widely used in groundwater hazard management. Its grout diffusion radius is a key parameter that directly affects the prevention and control effect. However, due to the difficulty in observing the grout diffusion range and effect, and its high degree of concealment, it has become a focus of research for many scholars. Among related technologies, research on the grout diffusion radius mainly involves directly observing the diffusion radius on a single plane to study grout diffusion. This method cannot accurately reflect the actual diffusion behavior within the rock strata. Furthermore, related technologies typically assume that the slurry diffusion medium is isotropic, that is, that is, that the physical properties of the medium are uniform in all directions, resulting in its diffusion behavior being uniform in all directions. This assumption means that the diffusion coefficient of the medium does not change in different directions, and the diffusion rate remains consistent regardless of the direction in which the slurry diffuses. However, in actual engineering, different media exhibit different diffusion characteristics under specific environments, and their diffusion laws vary significantly in different directions.

[0034] Based on this, in a specific embodiment provided by the present invention, a visual slurry diffusion simulation device is provided, with reference to... Figures 1 to 9As shown, the visualized slurry diffusion simulation device includes: a test tank 1, a grouting mechanism, and a drive mechanism 9. The test tank 1 includes an upper cover 101, a lower cover 102, and a receiving column 103 located between the upper and lower covers 101 and 102. The receiving column 103 is a hollow column, forming a receiving cavity 1031 between the upper and lower covers 101 and 102. A grouting pipe 104 is installed at the center of the upper cover 101, and observation pipes 105 are also installed on the upper cover 101. Multiple observation pipes 105 are arranged around the grouting pipe 104, meaning that slurry is injected into the receiving cavity 1031 through the grouting pipe 104. This fills the gaps in the fractured rock mass placed in the receiving cavity 1031. As the grout continuously fills the gaps in the fractured rock mass, the grout gradually diffuses. Some of the grout that passes through the observation tube 105 can overflow from the receiving cavity 1031 through the observation tube 105. Personnel can determine the diffusion of the grout by observing the observation tube 105 where there is overflowing grout. At the same time, in order to facilitate the control of the overflowing grout, a sealing cap 1051 can be set at one end of the observation tube 105 located outside the receiving cavity 1031. The observation tube 105 is sealed by the sealing cap 1051 to prevent excessive grout overflow and contamination of the test tank 1, and to ensure that the test environment is as clean and tidy as possible.

[0035] In some implementations, reference Figure 8 and Figure 9 As shown, the multiple observation tubes 105 arranged around the grouting pipe 104 have various arrangement forms. In order to better observe the grout overflow, with the location of the grouting pipe 104 as the center, multiple rings of installation positions are provided on the outside of the grouting pipe 104. Multiple observation tubes 105 are provided on each ring of installation positions, and the angle between two adjacent observation tubes 105 on the same ring is 30°.

[0036] In some embodiments, the grouting mechanism includes a first connecting pipe 4, a housing 2, and a piston 3. The housing 2 has a cavity with a uniform cross-section extending along its own length. The piston 3 is movably disposed in the cavity along the length of the housing 2, and the first end of the piston 3 and the housing 2 form a receiving space 301 for storing grout. One end of the first connecting pipe 4 is connected to the housing 2 and communicates with the receiving space 301. The other end of the first connecting pipe 4 is connected to the end of the grouting pipe 104 located outside the receiving cavity 1031. The driving mechanism 9 can drive the piston 3 to move to change the volume of the receiving space 301. That is, by moving the piston 3, the grout stored in the receiving space 301 is squeezed, so that the grout can flow through the first connecting pipe 4 to the grouting pipe 104 and be discharged into the receiving cavity 1031 through the grouting pipe 104.

[0037] Through the above technical solution, the upper cover 101, the lower cover 102, and the receiving column 103 located between the upper cover 101 and the lower cover 102 can be closed to form a receiving cavity 1031. By placing filling material 14 in the receiving cavity 1031, the fractured rock mass to be grouted is simulated. At the same time, a grouting pipe 104 is installed on the upper cover 101, with one end of the grouting pipe 104 extending into the filling material 14, so that the grout flowing into the receiving cavity 1031 through the grouting pipe 104 can efficiently fill the gaps in the fractured rock mass. Furthermore, multiple observation pipes 105 arranged around the grouting pipe 104 on the upper cover 101 can clearly observe the grout. The diffusion of the slurry is determined by the fact that the piston 3 can be moved by the drive mechanism 9, thereby changing the volume of the slurry-containing container 301. This causes the slurry stored in the container 301 to be squeezed by the piston 3, so that the slurry flows through the first connecting pipe 4, through the grouting pipe 104, and into the receiving cavity 1031. At the same time, one end of the observation pipe 105 extends into the receiving cavity 1031. When grouting is performed, as the slurry flows, some of the slurry will flow out of the receiving cavity 1031 through the observation pipe 105. The test personnel can then judge the diffusion information of the slurry by observing whether there is slurry flowing out of the observation pipe 105 at different positions.

[0038] This visual slurry diffusion simulation device observes the state of the slurry overflowing from the observation tubes 105 located at different parts of the top cover 101, and reflects the slurry diffusion dynamics in real time, enabling personnel to observe the slurry diffusion process from all angles.

[0039] Furthermore, the visualized slurry diffusion simulation device can study the anisotropy of the slurry diffusion medium, that is, the medium exhibits different physical properties in different directions. This anisotropy indicates that the diffusion coefficient of the medium has different values ​​in different directions, resulting in non-uniform diffusion rates of the slurry in different directions. For example, the diffusion rate of the slurry in one direction may differ significantly from that in another direction. In slurry diffusion research, the anisotropy of the medium reflects the difference in diffusion behavior in various directions. By considering this anisotropy, the behavior of slurries in real complex or heterogeneous media can be described and predicted more accurately, which has important practical significance for engineering practice.

[0040] In some implementations, reference Figure 5As shown, in order to enable the test personnel to have a clearer understanding of the stress data inside the storage cavity 1031 filled with filling material 14, a stress sensor 5 can be installed on the inner wall of the storage cavity 1031. The stress sensor 5 can be connected to the data acquisition instrument 11 located outside the storage cavity 1031 via a data connection cable. The data acquisition instrument 11 can then transmit the relevant numerical information to a display device 12 such as a computer for display, so that the test personnel can view the stress value inside the storage cavity 1031 in real time. The data connection cable can extend out of the storage cavity 1031 through the grouting pipe 104.

[0041] In some embodiments, the stress sensor 5 should be installed in key locations within the receiving cavity 1031, such as near cracks in the filling material 14, or on the upper and lower sidewalls of the receiving cavity 1031, to capture stress changes in different areas. A multi-point arrangement can be used to monitor stress changes in different areas in real time using multiple stress sensors 5, obtaining more comprehensive stress distribution data.

[0042] In another embodiment, the stress sensor 5 can be wirelessly connected. That is, the stress sensor 5 is a wireless stress sensor 5 that integrates Bluetooth or Wi-Fi technology to achieve wireless data transmission. Through wireless transmission, the stress data inside the housing cavity 1031 is transmitted to an external display device 12, such as a computer, tablet or mobile phone, in real time. The data can be displayed intuitively in the form of numbers, charts or three-dimensional models through a graphical user interface, which helps the test personnel to quickly understand the stress changes inside the housing cavity 1031. At the same time, all stress data can be saved in real time for later analysis.

[0043] In some implementations, reference Figure 4 and Figure 5 As shown, the upper cover 101, lower cover 102, and storage column 103 are detachably connected. Specifically, the test tank 1 also includes multiple connecting screws 7, which are arranged around the outside of the storage column 103. Both the upper cover 101 and lower cover 102 have through holes for the connecting screws 7 to pass through. Each connecting screw 7 is threaded with multiple nuts 701 for clamping the upper cover 101 and lower cover 102. When it is necessary to place the filling material 14 into the storage cavity 103... When the test tank 1 is inverted so that the top cover 101 faces the ground of the test site, loosen the nut 701 so that the bottom cover 102 is disengaged from the receiving column 103, and then fill the receiving cavity 1031 with the filling material 14. When the selected stress sensor 5 needs to be connected to the acquisition instrument 11 located outside the receiving cavity 1031 via the data connection line, the stress sensor 5 and the data connection line need to be arranged before the filling material 14 submerges the grouting pipe 104. After the arrangement is completed, continue to fill the filling material 14.

[0044] In some implementations, reference Figure 4 and Figure 5 As shown, in order to enable the test tank 1 to simulate different ground stresses, a pressure regulating block 6 can be installed in the receiving cavity 1031. The pressure regulating block 6 is set against the lower top cover 102. That is, after the filling material 14 is filled and the pressure regulating block 6 is set in the receiving cavity 1031, the nut 701 can be rotated. The compression of the nut 701 causes the upper top cover 101 and the lower top cover 102 to abut against the receiving column 103 from both ends. The pressure regulating block 6 can regulate the filling material 14. 4. Squeeze to change the pressure value inside the storage cavity 1031 (the ground stress value of the filling material 14). By adjusting the position of the nut 701, while ensuring the airtightness of the storage cavity 1031, the pressure value inside the storage cavity 1031 can be adjusted to a certain extent (the pressure can be adjusted within a range of 0-0.1MPa). The pressure inside the storage cavity 1031 is detected by the stress sensor 5. When the pressure inside the cavity (ground stress value) reaches the set value required for the test, the adjustment of the nut 701 can be stopped.

[0045] In some implementations, reference Figure 1 , Figure 6 and Figure 7As shown, the housing 2 includes a first end cap 201, a second end cap 202, and a receiving tube 203. The receiving tube 203 has a first flange 2031 for connecting to the first end cap 201 and a second flange 2032 for connecting to the second end cap 202 at its two opposite ends along its length. The first end cap 201 and the first flange 2031 are connected by multiple bolts, and the second end cap 202 and the second flange 2032 are connected by multiple bolts. When the first end cap 201 and the second end cap 202 are respectively connected to the two ends of the receiving tube 203, the first end cap 201, the second end cap 202, and the receiving tube 203 together form a cavity. A first connecting pipe 4 is connected to the first end cap 201, allowing the slurry located in the receiving space 301 to be discharged into the receiving cavity 1031 via the first connecting pipe 4 and the grouting pipe 104. Simultaneously, the second end of the piston 3, the second end cap 202, and part of the receiving tube 203 together form a cavity for receiving and pushing the piston. The second end cap 202 of the liquid propulsion space 302 is provided with a first injection pipe 204 for the propulsion liquid to flow into the propulsion space 302, and a first overflow pipe 205 is provided on the receiving pipe 203. The first overflow pipe 205 is connected to the propulsion space 302, that is, the first injection pipe 204 can inject the propulsion liquid into the propulsion space 302. As the propulsion liquid is continuously injected, the volume of the propulsion space 302 can be changed, thereby pushing the piston 3 to move. As the volume of the propulsion space 302 continuously increases, the volume of the receiving space 301 continuously decreases. The slurry in the receiving space 301 is continuously discharged into the receiving cavity 1031 through the first connecting pipe 4 and the grouting pipe 104. At the same time, when the slurry in the receiving space 301 is completely discharged, the volume of the propulsion space 302 no longer gradually increases. The test personnel can determine whether the slurry in the receiving space 301 is completely discharged by observing whether there is overflow of propulsion liquid in the first overflow pipe 205 connected to the propulsion space 302.

[0046] In some implementations, reference Figure 1 , Figure 6 and Figure 7 As shown, the grouting mechanism also includes a second injection pipe 206, a funnel 207, and a second overflow pipe 208. The funnel 207 is used to hold the grout. One end of the second injection pipe 206 is connected to the receiving pipe 203, and the other end is connected to the funnel 207, so that the funnel 207 is connected to the receiving space 301. The grout in the funnel 207 can flow into the receiving space 301 through the second injection pipe 206. At the same time, the second overflow pipe 208 is connected to the first end cap 201 and is connected to the receiving space 301. That is, when the receiving space 301 is filled with grout, the test personnel can determine whether the receiving space 301 is filled with grout by observing whether there is overflowing grout in the second overflow pipe 208.

[0047] In some implementations, reference Figure 1 ,Figure 6 and Figure 7 As shown, valves 8 are provided on the first injection pipe 204, the first overflow pipe 205, the second injection pipe 206 and the second overflow pipe 208. The test personnel can better control the injection or discharge of slurry into the containment space 301 and the injection or discharge of propulsion fluid into the propulsion space 302 by controlling the opening and closing of the valves 8.

[0048] Exemplary description of the grouting mechanism: (1) The second end of the piston 3, the second end cap 202 and the partial receiving tube 203 form a pushing space 302 for receiving the pushing fluid, and the first end of the piston 3, the first end cap 201 and the partial receiving tube 203 form a receiving space 301 for receiving the grout. That is, the piston 3 divides the cavity into the receiving space 301 and the pushing space 302. During the grouting operation, the volume of the pushing space 302 gradually increases and the volume of the receiving space 301 gradually decreases. (2) The piston 3 is provided with an annular groove for installing a sealing ring, thereby ensuring good sealing between the receiving space 301 and the pushing space 302. (3) Buffer blocks are installed on both the first end and the second end of the piston 3, thereby protecting the piston 3 and avoiding damage to the piston 3 caused by the piston 3 hitting the first end cap 201 or the second end cap 202 as much as possible.

[0049] In some implementations, reference Figures 1 to 3 As shown, the drive mechanism 9 is used to drive the piston 3 to move, thereby changing the volume of the accommodating space 301. The drive mechanism 9 includes an inlet pipe 901, an outlet pipe 902, a water pump 903, a filter 904, and a water tank 905. The inlet pipe 901 is connected to the inlet end of the water pump 903, and the outlet end of the water pump 903 is connected to the water tank 905 through a delivery pipe. One end of the outlet pipe 902 is connected to the water tank 905, and the other end is connected to the first injection pipe 204 through a second connecting pipe 13. The filter 904 is installed on the outlet pipe 902. The filter 904 is used to filter out impurities in the propelling fluid, ensuring that the propelling fluid flowing into the propelling space 302 is pure, preventing impurities from entering the propelling space 302, and reducing the possibility of piston 3 clogging. The inlet pipe 901 acts as a water source for providing the propelling fluid, and the water tank 905 ensures that the propelling fluid can be continuously and stably injected into the propelling space 302 during the grouting process.

[0050] In some implementations, reference Figures 1 to 3As shown, the drive mechanism 9 also includes a pressure relief pipe 906, which is connected between the inlet pipe 901 and the water tank 905. A pressure relief valve 910 is installed at the connection between the pressure relief pipe 906 and the inlet pipe 901. When the preset pressure threshold of the pressure relief valve 910 reaches its upper limit, the pressure relief valve 910 automatically opens, and some of the propellant flows back to the inlet pipe 901 through the pressure relief pipe 906 and is then pumped back to the water tank 905 by the water pump 903. This prevents equipment damage caused by excessive pressure in the pipe. Simultaneously, to ensure the safety of test personnel... The working status of each pipeline in the drive mechanism 9 can be obtained in real time, including key information such as pressure and flow. A pressure sensor 908 and a flow sensor 909 are also installed on the inlet pipe 901. Through pressure control and flow monitoring, the test personnel can more accurately control the moving speed and position of the piston 3, and then finely adjust the volume change of the accommodating space 301. The back pressure valve 907 installed on the inlet pipe 901 can maintain an appropriate pressure level to prevent the pressure from being too low or too high, and provide protection for the entire drive mechanism 9.

[0051] In some embodiments, the drive mechanism 9 can be installed inside the housing 911. The housing 911 is equipped with a power switch 912 and a human-machine interface touch screen 913 for controlling the drive mechanism 9. The housing 911 is equipped with a PLC or computer, which acts as a control processor to receive real-time data from the pressure sensor 908 and the flow sensor 909. Based on the data from the computer or PLC and the sensors, the pressure and flow changes in the pipeline of the drive mechanism 9 are judged in real time. The working state of the water pump 903 is dynamically adjusted through the control algorithm to ensure that the grouting process is stable and accurate. Through the human-machine interface touch screen 913, the test personnel can view the real-time status (such as pressure, flow, etc.) and perform operations such as starting, stopping, and adjusting parameters of the drive mechanism 9.

[0052] In some embodiments not shown, the drive mechanism 9 includes a push rod, one end of which extends through the second end cap 202 into the push space 302 and is connected to the second end of the piston 3. The piston 3 can be driven to move by the push rod. The push rod includes, but is not limited to, an electric push rod, a cylinder, etc.

[0053] In some implementations, reference Figure 6As shown, to keep the test site tidy, the housing 2 should be fixedly connected to the storage cart 10. The storage cart 10 is equipped with a connector for fixing the housing 2 and has a storage tank 1001 for collecting slurry and propulsion fluid. During grouting operations, there is a possibility that some propulsion fluid may overflow into the propulsion space 302 through the first overflow pipe 205 and some slurry may overflow into the receiving space 301 through the second overflow pipe 208. Therefore, the opening position of the storage tank 1001 is... Located below the housing 2, it is used to receive overflowing slurry and propellant, thereby preventing the overflowing slurry and propellant from contaminating the test site. At the same time, in order to facilitate the later cleaning of the storage cart 10, the storage cart 10 is equipped with a flushing pipe 1002 and a discharge pipe 1003 connected to the storage tank 1001. The flushing pipe 1002 is connected to a water pipe, so that the storage tank 1001 can be cleaned. The discharge pipe 1003 can discharge the wastewater after cleaning, ensuring that the storage tank 1001 is clean and tidy.

[0054] Grouting operation instructions: Before grouting, filler material 14, pressure regulating block 6 and stress sensor 5 need to be placed in the receiving cavity 1031. The stress sensor 5 provides real-time feedback on the pressure in the receiving cavity 1031 and the pressure value in the receiving cavity 1031 is adjusted by rotating the nut 701 on the connecting screw 7 until the preset value is reached.

[0055] Simultaneously, the first end cap 201 installed on the receiving pipe 203 is removed, and the test personnel push the piston 3 so that the piston 3 can abut against the second end cap 202 (when pushing the piston 3, the valve 8 on the first injection pipe 204 and the valve 8 on the first overflow pipe 205 should be opened). At this time, the volume of the receiving space 301 used to store the slurry is at its maximum (in order to ensure sufficient slurry during the grouting operation, the volume of the receiving space 301 used to store the slurry needs to be maximized before the grouting operation begins, so as to ensure that more slurry is stored in the receiving space 301. As the slurry is continuously injected into the receiving cavity 1031, the volume of the receiving space 301 increases). (Gradually decreasing), then the first end cap 201 is connected to the first flange 2031 by bolts. After the connection is completed, the valve 8 on the second injection pipe 206 and the valve 8 on the second overflow pipe 208 are opened. The slurry in the funnel 207 flows into the receiving space 301 through the second injection pipe 206. Then, the test personnel can judge whether the receiving space 301 is full of slurry by observing whether the slurry overflows from the second overflow pipe 208. When the slurry overflows from the second overflow pipe 208, the receiving space 301 is full of slurry. At this time, the valve 8 on the second injection pipe 206 and the valve 8 on the second overflow pipe 208 are closed.

[0056] Then, the water pump 903 is started so that the propelling fluid can flow sequentially through the inlet pipe 901, the water pump 903, the water tank 905, the filter 904, the outlet pipe 902, the second connecting pipe 13, and the first injection pipe 204 into the propelling space 302. As the propelling fluid is continuously injected into the propelling space 302, the piston 3 begins to move, the volume of the propelling space 302 gradually increases, and the volume of the receiving space 301 gradually decreases, so that the slurry is continuously injected into the receiving cavity 1031 through the first connecting pipe 4 and the grouting pipe 104, thereby filling the gaps of the filling material 14 placed in the receiving cavity 1031.

[0057] Finally, as the slurry flows, some of it will flow out of the receiving cavity 1031 through the observation tube 105. At this time, the test personnel can judge the diffusion information of the slurry by observing whether there is slurry flowing out of the observation tube 105 at different positions.

[0058] Meanwhile, test recordings can also be conducted using a high-speed camera. Specifically, by adjusting the tripod of the high-speed camera, the camera can be positioned to look down at the top cover 101 at a 45° angle, thereby recording the overflow of slurry from the observation tube 105 at different locations.

[0059] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this disclosure (including the claims) is limited to these examples; within the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0060] The embodiments of this invention are intended to cover all such substitutions, modifications, and variations falling within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A visual slurry diffusion simulation device, characterized in that, include: The test tank (1) includes an upper cover (101), a lower cover (102), and a receiving column (103) located between the upper cover (101) and the lower cover (102). The receiving column (103) is constructed as a hollow column to form a receiving cavity (1031) between the upper cover (101) and the lower cover (102). A grouting pipe (104) is installed at the center of the upper cover (101). An observation pipe (105) is also installed on the upper cover (101). There are multiple observation pipes (105), which are arranged around the grouting pipe (104). Both the grouting pipe (104) and the observation pipes (105) are connected to the receiving cavity (1031). A sealing cap (1051) is detachably connected to one end of the observation pipe (105) located outside the receiving cavity (1031). The grouting mechanism includes a first connecting pipe (4), a housing (2) and a piston (3). The housing (2) has a cavity with a uniform cross-section extending along its own length direction. The piston (3) is movably disposed in the cavity along the length direction of the housing (2). The first end of the piston (3) and the housing (2) form a receiving space (301) for storing grout. One end of the first connecting pipe (4) is connected to the housing (2) and communicates with the receiving space (301). The other end of the first connecting pipe (4) is connected to the end of the grouting pipe (104) located outside the receiving cavity (1031). A drive mechanism (9) is used to drive the piston (3) to move in order to change the volume of the accommodating space (301).

2. The visual slurry diffusion simulation device according to claim 1, characterized in that, It also includes a stress sensor (5), which is disposed on the inner wall surface of the receiving cavity (1031).

3. The visual slurry diffusion simulation device according to claim 2, characterized in that, It also includes a pressure regulating block (6), which is disposed in the receiving cavity (1031) and fits against the lower top cover (102).

4. The visual slurry diffusion simulation device according to claim 1, characterized in that, The test tank (1) also includes connecting screws (7), and there are multiple connecting screws (7). Multiple connecting screws (7) are arranged around the outside of the receiving column (103). The upper top cover (101) and the lower top cover (102) are provided with through holes for the connecting screws (7) to pass through. Each connecting screw (7) is threaded with multiple nuts (701) for clamping the upper top cover (101) and the lower top cover (102).

5. The visual slurry diffusion simulation device according to claim 1, characterized in that, The housing (2) includes a first end cap (201), a second end cap (202), and a receiving tube (203). The receiving tube (203) has a first flange (2031) for connecting the first end cap (201) and a second flange (2032) for connecting the second end cap (202) at its two ends arranged opposite to each other along its own length direction. The first end cap (201), the second end cap (202), and the receiving tube (203) together form the cavity. The first connecting tube (4) is connected to the first end cap (201). The second end of the piston (3), the second end cap (202), and part of the receiving tube (203) form a pushing space (302) for receiving the pushing fluid. The second end cap (202) is provided with a first injection tube (204) for allowing the pushing fluid to flow into the pushing space (302). The receiving tube (203) is provided with a first overflow tube (205), which is connected to the pushing space (302).

6. The visual slurry diffusion simulation device according to claim 5, characterized in that, The grouting mechanism further includes a second injection pipe (206), a funnel (207), and a second overflow pipe (208). One end of the second injection pipe (206) is connected to the receiving pipe (203), and the other end is connected to the funnel (207), so that the funnel (207) is connected to the receiving space (301). The second overflow pipe (208) is connected to the first end cap (201), and the second overflow pipe (208) is connected to the receiving space (301).

7. The visual slurry diffusion simulation device according to claim 6, characterized in that, Valves (8) are provided on the first injection pipe (204), the first overflow pipe (205), the second injection pipe (206), and the second overflow pipe (208).

8. The visual slurry diffusion simulation device according to claim 5, characterized in that, The drive mechanism (9) includes an inlet pipe (901), an outlet pipe (902), a water pump (903), a filter (904), and a water tank (905). The inlet pipe (901) is connected to the inlet end of the water pump (903). The outlet end of the water pump (903) is connected to the water tank (905) through a delivery pipe. One end of the outlet pipe (902) is connected to the water tank (905), and the other end is connected to the first injection pipe (204) through a second connecting pipe (13). The filter (904) is installed on the outlet pipe (902).

9. The visual slurry diffusion simulation device according to claim 8, characterized in that, The drive mechanism (9) also includes a pressure relief pipe (906), which is connected between the water inlet pipe (901) and the water tank (905). A pressure relief valve (910) is provided at the connection between the pressure relief pipe (906) and the water inlet pipe (901). A back pressure valve (907), a pressure sensor (908), and a flow sensor (909) are also installed on the water inlet pipe (901).

10. The visual slurry diffusion simulation device according to claim 1, characterized in that, It also includes a storage cart (10), which is provided with a connector for fixing the housing (2). The storage cart (10) has a storage slot (1001) and the opening of the storage slot (1001) is located below the housing (2). The storage cart (10) is provided with a flushing pipe (1002) and a discharge pipe (1003) communicating with the storage slot (1001).

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