Visual slurry diffusion simulation device

Abstract

The invention provides a visual slurry diffusion simulation device, comprising: a test tank comprising an upper top cover, a lower top cover and a storage column located between the upper top cover and the lower top cover, the storage column being a hollow column so as to form a storage cavity between the upper top cover and the lower top cover, a grouting pipe is installed in the center of the upper top cover, a plurality of observation pipes are further installed on the upper top cover, the multiple observation pipes are arranged around the grouting pipe, the grouting pipe and the observation pipes are both communicated with the containing cavity, and the upper top cover and the upper top cover are arranged in the containing cavity. The end, located outside the containing cavity, of the observation pipe is detachably connected with a plugging cap. The grouting mechanism and the driving mechanism work cooperatively and are used for injecting grout into the containing cavity. Thus, by means of the visual slurry diffusion simulation device, the slurry diffusion process can be accurately predicted, grouting technological parameters are optimized, and the more efficient and reliable reinforcement effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of grouting, and in particular to a visualized slurry diffusion simulation device. Background Art

[0002] In related technologies, with the widespread application of grouting projects, grouting technology is also constantly improving. However, the concealment in actual projects and the complex fracture morphology inside the rock mass make it difficult to predict the flow of slurry, making it difficult to accurately describe the diffusion law of slurry in fractured rock mass. At present, the slurry diffusion range mostly relies on engineering experience to judge, which makes the evaluation of the grouting reinforcement effect not accurate enough. Existing on-site grouting is usually guided by experience or relies on empirical formulas to predict the slurry diffusion process, resulting in the research on the grouting diffusion mechanism lagging behind practical application, resulting in engineering construction relying more on experience, with a certain degree of subjectivity, and it is difficult to ensure the stability and reliability of engineering quality. Summary of the invention

[0003] In view of this, an object of the present invention is to propose a visual slurry diffusion simulation device for accurately predicting the slurry diffusion process and optimizing the grouting process, so as to at least partially solve the problems in the related art.

[0004] Based on the above purpose, the present invention provides a visualized slurry diffusion simulation device, comprising:

[0005] The test tank body comprises an upper cover, a lower cover and a storage column located between the upper cover and the lower cover, wherein the storage column is constructed as a hollow cylinder to form a storage cavity between the upper cover and the lower cover, a grouting pipe is installed at the center of the upper cover, and an observation tube is also installed on the upper cover. There are multiple observation tubes, and the multiple observation tubes are arranged around the grouting pipe. The grouting pipe and the observation tube are both connected to the storage cavity, and one end of the observation tube located outside the storage cavity is detachably connected to a blocking cap;

[0006] The grouting mechanism comprises a first connecting pipe, a shell and a piston, wherein the shell has a cavity extending along its length direction with a uniform cross section, the piston is movably arranged in the cavity along the length direction of the shell, and a receiving space for storing slurry is formed between the first end of the piston and the shell, one end of the first connecting pipe is connected to the shell and communicated with the receiving space, and 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 piston to move so as to change the volume of the accommodating space.

[0008] Optionally, a stress sensor is further included, and the stress sensor is arranged on the inner wall surface of the storage cavity.

[0009] Optionally, a pressure regulating block is further included, and the pressure regulating block is arranged in the storage cavity and fits the lower top cover.

[0010] Optionally, the test tank body also includes a connecting screw, and the number of the connecting screws is multiple. The multiple connecting screws are arranged around the outside of the storage column. The upper top cover and the lower top cover are provided with through holes for the connecting screws to pass through, and each of the connecting screws is threadedly connected with a plurality of nuts for clamping the upper top cover and the lower top cover.

[0011] Optionally, the shell includes a first end cover, a second end cover and a accommodating tube, and the accommodating tube is provided with a first flange for connecting to the first end cover and a second flange for connecting to the second end cover at two ends opposite to each other along its length direction, the first end cover, the second end cover and the accommodating tube together form the cavity, the first connecting tube is connected to the first end cover, and the second end of the piston, the second end cover and a part of the accommodating tube form a pushing space for accommodating pushing liquid, the second end cover is provided with a first injection pipe for supplying the pushing liquid to flow into the pushing space, and the accommodating tube is provided with a first overflow pipe, and the first overflow pipe is connected to the pushing space.

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

[0013] Optionally, valves are provided on the first injection pipe, the first overflow pipe, the second injection pipe and the second overflow pipe.

[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 via a delivery pipe, one end of the water outlet pipe is connected to the water tank, and the other end is connected to the first injection pipe via 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, which is connected between the water inlet pipe and the water tank, and a pressure relief valve is provided at the connection portion between the pressure relief pipeline and the water inlet pipe. A back pressure valve, a pressure sensor and a flow sensor are also installed on the water inlet pipe.

[0016] Optionally, a storage cart is further included, the storage cart is provided with a connector for fixing the shell, the storage cart has a storage groove and the opening of the storage groove is located below the shell, and the storage cart is provided with a flushing pipe and a discharge pipe connected to the storage groove.

[0017] Through the above technical solution, the upper top cover, the lower top cover and the storage column located between the upper top cover and the lower top cover can enclose a storage cavity, and the fractured rock mass to be grouted is simulated by placing filling materials in the storage cavity. At the same time, a grouting pipe is installed on the upper top cover, and one end of the grouting pipe extends into the filling material, so that the slurry flowing into the storage cavity through the grouting pipe can efficiently fill the gaps in the fractured rock mass, and the multiple observation tubes arranged around the grouting pipe on the upper top cover can clearly observe the diffusion of the slurry, that is, through The overdrive mechanism can drive the piston to move, thereby changing the volume of the storage space storing the slurry, so that the slurry stored in the storage space is squeezed by the piston, so that the slurry passes through the first connecting pipe and then flows into the receiving chamber after the grouting pipe. At the same time, one end of the observation tube extends into the receiving chamber. When the grouting operation is carried out, as the slurry flows, part of the slurry will flow out of the receiving chamber through the observation tube. 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 tubes at different positions.

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

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

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

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

[0023] Figure 4 is a schematic diagram of a structure in which no filling material is placed in a test tank provided in an exemplary embodiment of the present disclosure;

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

[0025] Figure 6 is a schematic structural diagram of a grouting mechanism and a storage trolley provided in an exemplary embodiment of the present disclosure;

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

[0027] Figure 8 It is a schematic diagram of a structure in which an observation tube is installed on the upper top cover provided in an exemplary embodiment of the present disclosure;

[0028] Fig. 9 It is another structural schematic diagram of an observation tube installed on the upper top cover provided in an exemplary embodiment of the present disclosure.

[0029] Description of Reference Numerals

[0030] 1-test tank body; 101-upper cover; 102-lower cover; 103-storage column; 1031-storage cavity; 104-grouting pipe; 105-observation pipe; 1051-blocking cap; 2-shell; 201-first end cover; 202-second end cover; 203-accommodation pipe; 2031-first flange; 2032-second flange; 204-first injection pipe; 205-first overflow pipe; 206-second injection pipe; 207-funnel; 208-second overflow pipe; 3-piston; 301-accommodation space; 302-pushing space; 4-first connecting pipe; 5-stress sensor; 6-pressure regulating Section block; 7-connecting screw; 701-nut; 8-valve; 9-driving mechanism; 901-water inlet pipe; 902-water outlet pipe; 903-water pump; 904-filter; 905-water tank; 906-pressure relief pipeline; 907-back pressure valve; 908-pressure sensor; 909-flow sensor; 910-pressure relief valve; 911-box; 912-power switch; 913-human-machine interface touch screen; 10-storage cart; 1001-storage slot; 1002-flushing pipe; 1003-discharge pipe; 11-collector; 12-display device; 13-second connecting pipe; 14-filling material. DETAILED DESCRIPTION

[0031] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction 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 invention should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure 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] With the widespread application of grouting projects, grouting technology is also constantly improving. However, the concealment in actual projects and the complex fracture morphology inside the rock mass make it difficult to predict the flow of slurry, making it difficult to accurately describe the diffusion law of slurry in fractured rock mass. At present, the slurry diffusion range is mostly judged by engineering experience, which makes the evaluation of the grouting reinforcement effect not accurate enough. Existing on-site grouting usually relies on experience to guide or rely on empirical formulas to predict the slurry diffusion process, resulting in the research on grouting diffusion mechanism lagging behind practical application. Therefore, the research on grouting control methods urgently needs to be explored. Grouting, as an important means of mine water hazard prevention and control, is widely used in groundwater hazard control. Its slurry diffusion radius is a key parameter that directly affects the prevention and control effect. However, since the slurry diffusion range and effect are difficult to observe and are highly concealed, it has become the focus of research for many scholars. Among them, in related technologies, the research on the slurry diffusion radius mainly studies the slurry diffusion by directly observing the diffusion radius on a single plane. This method cannot accurately reflect the actual diffusion behavior in the rock formation. In addition, in related technologies, it is usually assumed that the slurry diffusion medium is isotropic, that is, it is assumed 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 its 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, referring to Figures 1 to 9As shown, the visualized slurry diffusion simulation device comprises: a test tank body 1, a grouting mechanism and a driving mechanism 9, wherein the test tank body 1 comprises 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 cylinder 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, and an observation tube 105 is also installed on the upper cover 101, and the number of the observation tubes 105 is plural, and the plurality of observation tubes 105 are arranged around the grouting pipe 104, that is, the slurry is injected into the receiving cavity 1031 through the grouting pipe 104, Thereby, the gaps in the fractured rock mass within the receiving chamber 1031 are filled. As the slurry continuously fills the gaps in the fractured rock mass, the slurry gradually diffuses. Part of the slurry passing through the observation tube 105 can overflow out of the receiving chamber 1031 through the observation tube 105. Personnel can determine the diffusion of the slurry by observing the observation tube 105 where the overflowed slurry exists. At the same time, in order to facilitate the control of the overflowed slurry, a sealing cap 1051 can be provided at one end of the observation tube 105 located outside the receiving chamber 1031. The observation tube 105 is sealed by the sealing cap 1051, thereby preventing excessive slurry from overflowing and causing contamination of the test tank 1, thereby ensuring that the test environment is as clean and tidy as possible.

[0035] In some embodiments, reference Figure 8 and Fig. 9 As shown, the multiple observation tubes 105 arranged around the grouting pipe 104 have various arrangement forms. Among them, in order to better observe the slurry overflow, with the position of the grouting pipe 104 as the center of the circle, multiple circles of mounting positions are provided on the outside of the grouting pipe 104, and each circle of mounting positions is provided with multiple observation tubes 105. The angle between two adjacent observation tubes 105 located on the same circle is 30°.

[0036] In some embodiments, the grouting mechanism includes a first connecting pipe 4, a shell 2 and a piston 3, the shell 2 has a cavity with a constant cross-section extending along its length direction, the piston 3 is movably arranged in the cavity along the length direction of the shell 2, and a receiving space 301 for storing slurry is formed between the first end of the piston 3 and the shell 2, one end of the first connecting pipe 4 is connected to the shell 2 and communicates with the receiving space 301, and the other end of the first connecting pipe 4 is connected to an end of the grouting pipe 104 located outside the receiving chamber 1031, and the driving mechanism 9 can drive the piston 3 to move to change the volume of the receiving space 301, that is, the slurry stored in the receiving space 301 is squeezed by the movement of the piston 3, so that the slurry can flow to the grouting pipe 104 through the first connecting pipe 4, and the slurry is discharged into the receiving chamber 1031 through the grouting pipe 104.

[0037] Through the above technical solution, the upper cover 101, the lower cover 102 and the storage column 103 located between the upper cover 101 and the lower cover 102 can enclose a storage cavity 1031, and the filling material 14 is placed in the storage cavity 1031 to simulate the fractured rock mass to be grouted. At the same time, a grouting pipe 104 is installed on the upper cover 101, and one end of the grouting pipe 104 extends into the filling material 14, so that the slurry flowing into the storage cavity 1031 through the grouting pipe 104 can efficiently fill the gaps in the fractured rock mass, and the multiple observation tubes 105 arranged on the upper cover 101 around the grouting pipe 104 can clearly observe the slurry. That is, the driving mechanism 9 can drive the piston 3 to move, thereby changing the volume of the storage space 301 storing the slurry, so that the slurry stored in the storage space 301 is squeezed by the piston 3, so that the slurry passes through the first connecting pipe 4, and then flows into the storage chamber 1031 after passing through the grouting pipe 104. At the same time, one end of the observation tube 105 extends into the storage chamber 1031. When the grouting operation is carried out, as the slurry flows, part of the slurry will flow out of the storage chamber 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.

[0038] The visualized slurry diffusion simulation device reflects the slurry diffusion dynamics in real time by observing the state of the slurry overflowing from the observation tubes 105 located at different parts of the upper cover 101, so that personnel can observe the slurry diffusion process in all directions and from multiple angles.

[0039] In addition, the visual 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 uneven diffusion rates of the slurry in different directions. For example, the diffusion rate of the slurry in one direction may be significantly different from the rate in another direction. In the study of slurry diffusion, the anisotropy of the medium reflects the differences in diffusion behavior in various directions. By considering this anisotropy, the behavior of the slurry in actual complex or inhomogeneous media can be more accurately described and predicted, which has important practical significance for engineering practice.

[0040] In some embodiments, reference Figure 5As shown, in order to enable the test personnel to more clearly understand the ground stress data inside the storage cavity 1031 filled with the filling material 14, a stress sensor 5 can be installed on the inner wall surface of the storage cavity 1031, wherein the stress sensor 5 can be connected to the collector 11 located outside the storage cavity 1031 through a data connection line, and then the relevant numerical information is transmitted to a display device 12 such as a computer through the collector 11 for display, so that the test personnel can view the stress value in the storage cavity 1031 in real time, and the data connection line can extend out of the storage cavity 1031 through the grouting pipe 104;

[0041] In some embodiments, the stress sensor 5 should be installed at key locations in the storage cavity 1031, such as near the cracks of the filling material 14, the upper and lower side walls of the storage cavity 1031, etc., so as to capture stress changes in different areas. A multi-point arrangement method can be used to monitor stress changes in different areas in real time through multiple stress sensors 5 to obtain more comprehensive stress distribution data.

[0042] In another embodiment, the stress sensor 5 can be connected wirelessly, that is, the stress sensor 5 is a wireless stress sensor 5, which integrates Bluetooth or Wi-Fi technology to achieve wireless data transmission. Through wireless transmission, the stress data in the storage 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 intuitively displayed in the form of numbers, charts or three-dimensional models through a graphical user interface, helping test personnel to quickly understand the stress changes inside the storage cavity 1031. At the same time, all stress data can be saved in real time for later analysis.

[0043] In some embodiments, reference Figure 4 and Figure 5 As shown, the upper cover 101, the lower cover 102 and the storage column 103 are detachably connected, that is, the test tank body 1 also includes a connecting screw 7, the number of the connecting screws 7 is multiple, and the multiple connecting screws 7 are arranged around the outside of the storage column 103. The upper cover 101 and the lower cover 102 are both provided with through holes for the connecting screws 7 to pass through, and each connecting screw 7 is threadedly connected with a plurality of nuts 701 for clamping the upper cover 101 and the lower cover 102. When the filling material 14 needs to be placed in the storage cavity 103, 1, the test tank body 1 is inverted so that the upper cover 101 faces the ground of the test site, and the nut 701 is loosened to make the lower cover 102 separate from the storage column 103, and then the filling material 14 can be filled into the storage cavity 1031. When the selected stress sensor 5 needs to be connected to the collector 11 located outside the storage cavity 1031 through a data connection line, it is necessary to arrange the stress sensor 5 and the data connection line 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 embodiments, reference Figure 4 and Figure 5 As shown, in order to enable the test tank body 1 to simulate different ground stresses, a pressure regulating block 6 can be arranged in the storage chamber 1031, and the pressure regulating block 6 is arranged in contact with the lower top cover 102, that is, after the filling material 14 is filled and the pressure regulating block 6 is arranged in the storage chamber 1031, the nut 701 can be rotated, and the upper top cover 101 and the lower top cover 102 are respectively pressed from both ends of the storage column 103 to press the storage column 103, wherein the pressure regulating block 6 can press the filling material 14. 4 is squeezed, thereby changing 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 meeting the airtightness of the storage cavity 1031, the pressure value inside the storage cavity 1031 can be adjusted to a certain extent (the pressure adjustable range is 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 embodiments, reference Figure 1 , Figure 6 and Figure 7As shown, the housing 2 includes a first end cover 201, a second end cover 202 and a receiving tube 203, wherein the receiving tube 203 is provided with a first flange 2031 for connecting the first end cover 201 and a second flange 2032 for connecting the second end cover 202 at two opposite ends thereof along its length direction, respectively; the first end cover 201 and the first flange 2031 are connected by a plurality of bolts, and the second end cover 202 and the second flange 2032 are connected by a plurality of bolts; when the first end cover 201 and the second end cover 202 are respectively connected to the two ends of the receiving tube 203, the first end cover 201, the second end cover 202 and the receiving tube 203 are surrounded to form a cavity, and the first connecting tube 4 is connected to the first end cover 201, so that the slurry in the receiving space 301 is discharged into the receiving chamber 1031 through the first connecting tube 4 and the grouting tube 104; at the same time, the second end of the piston 3, the second end cover 202 and a part of the receiving tube 203 form a cavity for receiving the pusher. The first overflow pipe 205 is provided on the receiving tube 203, and the first overflow pipe 205 is connected to the pushing space 302, that is, the first injection pipe 204 can inject the pushing liquid into the pushing space 302. With the continuous injection of the pushing liquid, the volume of the pushing space 302 can be changed, thereby pushing the piston 3 to move. With the continuous increase of the volume of the pushing space 302, the volume of the receiving space 301 is continuously reduced, and 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 discharged, the volume of the pushing space 302 is no longer gradually increased. The test personnel can judge whether the slurry in the receiving space 301 is discharged cleanly by observing whether there is overflow pushing liquid in the first overflow pipe 205 connected to the pushing space 302.

[0046] In some embodiments, 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, wherein the funnel 207 is used to hold slurry, 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, and the slurry held 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 cover 201 and the second overflow pipe 208 is connected to the receiving space 301, that is, when the receiving space 301 is filled with slurry, the test personnel can judge whether the receiving space 301 is filled with slurry by observing whether there is overflow slurry from the second overflow pipe 208.

[0047] In some embodiments, 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 experimenter can better control the injection or discharge of slurry into the containing space 301 and the injection or discharge of the pushing liquid into the pushing space 302 by controlling the opening and closing of the valve 8.

[0048] An exemplary description of the grouting mechanism: (1) The second end of the piston 3, the second end cover 202 and a part of the containing tube 203 form a pushing space 302 for receiving the pushing liquid, and the first end of the piston 3, the first end cover 201 and a part of the containing tube 203 form a containing space 301 for receiving the slurry, that is, the piston 3 divides the cavity into the containing 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 containing 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 containing space 301 and the pushing space 302; (3) Buffer blocks are installed on the first end of the piston 3 and the second end of the piston 3, so that the piston 3 is protected by the buffer blocks, thereby avoiding damage to the piston 3 caused by the piston 3 hitting the first end cover 201 or the second end cover 202 as much as possible.

[0049] In some embodiments, reference Figures 1 to 3 As shown, the driving mechanism 9 is used to drive the piston 3 to move so as to change the volume of the accommodating space 301, wherein the driving mechanism 9 includes an inlet pipe 901, an outlet pipe 902, a water pump 903, a filter 904 and a water tank 905, wherein the inlet pipe 901 is connected to the water 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, and the filter 904 is arranged on the outlet pipe 902, wherein the filter 904 is used to filter out impurities in the driving liquid, to ensure that the driving liquid flowing into the driving space 302 is pure, to prevent impurities from entering the driving space 302, and to reduce the possibility of clogging of the piston 3, and the inlet pipe 901 serves as a water source for providing the driving liquid, and the arrangement of the water tank 905 can ensure that during the grouting process, the driving liquid can be continuously and stably injected into the driving space 302.

[0050] In some embodiments, reference Figures 1 to 3As shown, the driving mechanism 9 also includes a pressure relief pipeline 906, which is connected between the water inlet pipe 901 and the water tank 905, and a pressure relief valve 910 is provided at the connection portion between the pressure relief pipeline 906 and the water inlet pipe 901. When the preset pressure threshold of the pressure relief valve 910 reaches the upper limit, the pressure relief valve 910 automatically opens, and part of the propulsion fluid flows back to the water inlet pipe 901 through the pressure relief pipeline 906 and is transported to the water tank 905 again through the water pump 903, thereby preventing equipment damage caused by excessive pressure in the pipeline. At the same time, in order to allow test personnel The working status of each pipeline in the driving mechanism 9, including key information such as pressure and flow, can be obtained in real time. A pressure sensor 908 and a flow sensor 909 are also installed on the water inlet pipe 901. Through pressure control and flow monitoring, the tester can more accurately control the movement 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 water inlet pipe 901 can maintain an appropriate pressure level to prevent the pressure from being too low or too high, thereby providing protection for the driving mechanism 9 as a whole.

[0051] In some embodiments, the driving mechanism 9 can be installed in a box 911, and a power switch 912 and a human-machine interface touch screen 913 for controlling the driving mechanism 9 are provided on the box 911, wherein a PLC or computer is provided in the box 911, and the PLC or computer is used as a control processor to receive real-time data from the pressure sensor 908 and the flow sensor 909, and the pressure and flow changes in the pipeline of the driving mechanism 9 are judged in real time based on the computer or PLC and combined with the sensor data, and the working state of the water pump 903 is dynamically adjusted through the control algorithm to ensure that the grouting process is smooth and accurate. The test personnel can view the real-time status (such as pressure, flow, etc.) through the human-machine interface touch screen 913, and start, stop, adjust parameters, and other operations on the driving mechanism 9.

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

[0053] In some embodiments, reference Figure 6As shown, in order to make the test site more tidy, the shell 2 should be fixedly connected to the storage cart 10, wherein the storage cart 10 is provided with a connector for fixing the shell 2, and the storage cart 10 has a storage tank 1001 for storing slurry and pushing liquid. When the grouting operation is performed, there is a possibility that part of the pushing liquid overflows the pushing space 302 through the first overflow pipe 205 and part of the slurry overflows the accommodation space 301 through the second overflow pipe 208. Therefore, the opening position of the storage tank 1001 is Below the shell 2, it is used to receive the overflowed slurry and propulsion liquid, so as to prevent the overflowed slurry and propulsion liquid 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 provided 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, and the cleaned sewage can be discharged through the discharge pipe 1003 to ensure that the storage tank 1001 is clean and tidy.

[0054] Grouting operation description: Before the grouting operation, it is necessary to place the filling material 14, the pressure regulating block 6 and the stress sensor 5 in the storage chamber 1031, and the pressure in the storage chamber 1031 is fed back in real time by the stress sensor 5 and the pressure value in the storage chamber 1031 is adjusted by rotating the nut 701 on the connecting screw 7 until the preset value is reached;

[0055] At the same time, the first end cover 201 installed on the receiving tube 203 is removed, and the test personnel push the piston 3 so that the piston 3 can abut the second end cover 202 (the valve 8 on the first injection tube 204 and the valve 8 on the first overflow tube 205 should be opened when pushing the piston 3). At this time, the volume of the receiving space 301 for storing the slurry is the largest (in order to ensure that the slurry is sufficient during the grouting operation, it is necessary to maximize the volume of the receiving space 301 for storing the slurry before the grouting operation begins, thereby ensuring that more slurry is stored in the receiving space 301. As the slurry is continuously injected into the receiving chamber 1031, the volume of the receiving space 301 increases. The first end cover 201 is then 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 accommodation space 301 through the second injection pipe 206. After that, the test personnel can judge whether the accommodation space 301 is full of slurry by observing whether the second overflow pipe 208 overflows slurry. When the second overflow pipe 208 overflows slurry, the accommodation space 301 is filled with 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] Afterwards, the water pump 903 is started, so that the pushing liquid can flow through the water inlet pipe 901, the water pump 903, the water tank 905, the filter 904, the water outlet pipe 902, the second connecting pipe 13 and the first injection pipe 204 in sequence and then flow into the pushing space 302. As the pushing liquid is continuously injected into the pushing space 302, the piston 3 starts to move, the volume of the pushing space 302 gradually increases, and the volume of the accommodating space 301 gradually decreases, so that the slurry is continuously injected into the receiving chamber 1031 after passing through the first connecting pipe 4 and the grouting pipe 104, thereby filling the gap of the filling material 14 placed in the receiving chamber 1031;

[0057] Finally, as the slurry flows, part of the slurry will flow out of the receiving chamber 1031 through the observation tube 105 through which it flows. At this time, the tester can determine the diffusion information of the slurry by observing whether there is slurry flowing out of the observation tube 105 at different positions.

[0058] At the same time, the test can also be recorded by a high-speed camera, that is, by adjusting the tripod equipped with the high-speed camera, the camera is allowed to look down at the upper cover 101 at a 45° angle, so that the overflow of slurry from the observation tube 105 at different positions can be recorded.

[0059] 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 disclosure (including the claims) is limited to these examples. Within the scope of the present invention, the above embodiments or technical features in 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 present invention as described above, which are not provided in detail for the sake of simplicity.

[0060] The embodiments of the present invention 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 present invention should be included in the protection scope of the present invention.

Claims

1. A visual slurry diffusion simulation device, characterized in that: include: A test tank body (1) comprises an upper cover (101), a lower cover (102) and a storage column (103) located between the upper cover (101) and the lower cover (102), wherein the storage column (103) is constructed as a hollow cylinder to form a storage cavity (1031) between the upper cover (101) and the lower cover (102), and a grouting pipe (104) is installed at the center of the upper cover (101). An observation tube (105) is also installed on the upper cover (101), and the number of the observation tubes (105) is multiple, and the multiple observation tubes (105) are arranged around the grouting pipe (104), and the grouting pipe (104) and the observation tube (105) are both connected to the receiving cavity (1031), and one end of the observation tube (105) located outside the receiving cavity (1031) is detachably connected to a blocking cap (1051); The grouting mechanism comprises a first connecting pipe (4), a shell (2) and a piston (3), wherein the shell (2) has a cavity with a uniform cross-section extending along its length direction, the piston (3) is movably arranged in the cavity along the length direction of the shell (2), and a receiving space (301) for storing slurry is formed between the first end of the piston (3) and the shell (2), one end of the first connecting pipe (4) is connected to the shell (2) and communicates with the receiving space (301), and the other end of the first connecting pipe (4) is connected to an end of the grouting pipe (104) located outside the receiving cavity (1031); A driving mechanism (9) is used to drive the piston (3) to move so as to change the volume of the accommodating space (301).

2. The visualized slurry diffusion simulation device according to claim 1, characterized in that: It also comprises a stress sensor (5), wherein the stress sensor (5) is arranged on the inner wall surface of the storage cavity (1031).

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

4. The visualized slurry diffusion simulation device according to claim 1, characterized in that: The test tank body (1) also includes a connecting screw (7), and the number of the connecting screws (7) is plural. The multiple connecting screws (7) are arranged around the outside of the storage column (103). The upper top cover (101) and the lower top cover (102) are both provided with through holes for the connecting screws (7) to pass through. Each of the connecting screws (7) is threadedly connected with a plurality of nuts (701) for clamping the upper top cover (101) and the lower top cover (102).

5. The visualized slurry diffusion simulation device according to claim 1, characterized in that: The housing (2) comprises a first end cover (201), a second end cover (202) and a receiving tube (203); two opposite ends of the receiving tube (203) along its length direction are respectively provided with a first flange (2031) for connecting to the first end cover (201) and a second flange (2032) for connecting to the second end cover (202); the first end cover (201), the second end cover (202) and the receiving tube (203) together form the cavity; the first connecting tube (203) 4) is connected to the first end cover (201), and a driving space (302) for receiving driving liquid is formed between the second end of the piston (3), the second end cover (202) and a part of the containing tube (203), and the second end cover (202) is provided with a first injection pipe (204) for allowing the driving liquid to flow into the driving space (302), and the containing tube (203) is provided with a first overflow pipe (205), and the first overflow pipe (205) is connected to the driving space (302).

6. The visualized slurry diffusion simulation device according to claim 5, characterized in that: The grouting mechanism further comprises 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 cover (201), and the second overflow pipe (208) is connected to the receiving space (301).

7. The visualized slurry diffusion simulation device according to claim 6, characterized in that: The first injection pipe (204), the first overflow pipe (205), the second injection pipe (206) and the second overflow pipe (208) are all provided with valves (8).

8. The visualized slurry diffusion simulation device according to claim 5, characterized in that: The driving mechanism (9) comprises a water inlet pipe (901), a water outlet pipe (902), a water pump (903), a filter (904) and a water tank (905); the water inlet pipe (901) is connected to the water inlet end of the water pump (903); the water outlet end of the water pump (903) is connected to the water tank (905) via a delivery pipe; one end of the water outlet pipe (902) is connected to the water tank (905) and the other end is connected to the first injection pipe (204) via a second connecting pipe (13); and the filter (904) is arranged on the water outlet pipe (902).

9. The visualized slurry diffusion simulation device according to claim 2, characterized in that: The driving mechanism (9) further comprises a pressure relief pipeline (906), wherein the pressure relief pipeline (906) is connected between the water inlet pipe (901) and the water tank (905), and a pressure relief valve (910) is provided at the connection portion between the pressure relief pipeline (906) and the water inlet pipe (901), and 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 visualized slurry diffusion simulation device according to claim 1, characterized in that: The storage trolley (10) is also included. The storage trolley (10) is provided with a connecting piece for fixing to the shell (2). The storage trolley (10) has a storage groove (1001) and the opening of the storage groove (1001) is located below the shell (2). The storage trolley (10) is provided with a flushing pipe (1002) and a discharge pipe (1003) which are connected to the storage groove (1001).

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