Grouting system and grouting method applied to similar material simulation test

Abstract

The invention provides a grouting system and a grouting method applied to a similar material simulation test. The grouting system comprises a storage module which comprises a grout storage chamber and a hydraulic fluid storage chamber which are arranged in a separated mode; the slurry storage chamber is used for receiving / outputting slurry; the hydraulic fluid storage chamber is used for receiving / outputting hydraulic fluid; the supporting module comprises a supporting truss and a positioning piece arranged on the supporting truss; the storage module is arranged on the supporting truss; the slurry flow state maintaining module is arranged in the storage chamber body; comprising a pressure-bearing piston and a rotating mechanism sleeved with the pressure-bearing piston. The pressure-bearing piston is used for dividing the storage chamber body into a slurry storage chamber and a hydraulic fluid storage chamber; the rotating mechanism is arranged in the slurry storage chamber and is used for stirring the slurry in the slurry storage chamber; the hydraulic power module is used for injecting hydraulic fluid into the hydraulic fluid storage chamber. And the non-transparent grouting environment deeply buried underground and the grouting-rock coupling form after grouting can be copied under the visual view angle.

Description

Technical Field

[0001] This application relates to the field of similar material simulation testing technology, and in particular to a grouting system and grouting method for similar material simulation testing. Background Technology

[0002] Similar material simulation testing is an important technical means for scientific research in geotechnical engineering fields such as mining, subways, and tunnels. It has significant advantages such as high scientific reliability of test results, short test cycle, and low overall cost. The development of geotechnical engineering is facing new challenges and has put forward new requirements for the development of scientific research and engineering technology in related fields.

[0003] In the process of coal mining, grouting modification and reconstruction of aquitards plays an important role in water control. In order to overcome the opaque nature of the mining geological environment and groundwater system, and to achieve the progressive development of grouting water control technology, similar material simulation tests have become one of the important technical means. Summary of the Invention

[0004] In view of this, the purpose of this application is to propose a grouting system and grouting method for use in simulation tests of similar materials.

[0005] To achieve the above objectives, this application provides a grouting system for use in similar material simulation tests, comprising: A storage module includes a storage chamber body with a cavity; the storage chamber body includes a slurry storage chamber and a hydraulic fluid storage chamber that are separated from each other; the slurry storage chamber is used to receive / output slurry; the hydraulic fluid storage chamber is used to receive / output hydraulic fluid. A support module includes a support truss and a positioning element disposed on the support truss; the storage module is disposed on the support truss; the positioning element is used to position the storage module. A slurry flow maintenance module is disposed within the storage chamber body; the slurry flow maintenance module includes a pressure-bearing piston and a rotating mechanism sleeved within the pressure-bearing piston; the pressure-bearing piston is used to divide the storage chamber body into a slurry storage chamber and a hydraulic fluid storage chamber; the rotating mechanism is disposed within the slurry storage chamber; the rotating mechanism is used to agitate the slurry within the slurry storage chamber; A hydraulic power module is used to inject hydraulic fluid into the hydraulic fluid storage chamber.

[0006] In some embodiments, the rotating mechanism includes a first bearing, a motor, a rotating component, and a control component; the first bearing supports the motor; the rotating component is mounted on the first bearing; the rotating component is used to stir the slurry in the slurry storage chamber; the control component is electrically connected to the motor and is used to control the motor to run / stop and drive the first bearing to rotate the rotating component.

[0007] In some embodiments, the rotating mechanism further includes a scale disposed on the control element; the scale has graduations; the scale extends away from the storage module such that the graduations at the intersection of the scale and the storage chamber body are used to indicate the grouting volume.

[0008] In some embodiments, the control element includes a pressure-isolating cylinder, a control line sleeved inside the pressure-isolating cylinder, and a limiting element passing through the pressure-isolating cylinder; The pressure-isolating cylinder is reused as the scale; the scale lines are provided on the surface of the pressure-isolating cylinder.

[0009] The control line is electrically connected to the motor; the control line is also electrically connected to the hydraulic power module.

[0010] In some embodiments, the support module further includes a reversing assembly disposed on the support truss; the reversing assembly includes at least one reversing pulley disposed on the support truss and a second bearing sleeved in the reversing pulley; the storage module passes through the second bearing.

[0011] In some embodiments, the storage chamber body includes a first end cap, a second end cap, a plurality of body segments disposed between the first end cap and the second end cap, and a plurality of connectors; The first end cap, the second end cap, and the plurality of body segments are all coaxially arranged and each has a protruding structure. The protruding structure has a plurality of first through holes, and the plurality of connectors are respectively arranged in a one-to-one correspondence with the plurality of first through holes. The connectors pass through the plurality of first through holes of the protruding structure to connect the first end cap and the second end cap to the plurality of body segments. The second bearing has a second through hole, and at least one of the connecting members also passes through the second through hole to connect the storage chamber body to the second bearing.

[0012] In some embodiments, the hydraulic power module includes a hydraulic pump with a hydraulic fluid tank inside; the hydraulic pump is also equipped with a touch screen display. The second end cap has a hydraulic fluid injection port and a hydraulic fluid return port; the hydraulic pump is connected to the hydraulic fluid injection port through a hydraulic fluid injection pipe; the hydraulic pump is connected to the hydraulic fluid return port through a hydraulic fluid return pipe. The first end cap has a slurry injection port and a slurry discharge port; the storage module also includes a slurry discharge pipe connected to the slurry discharge port; The storage module also includes a pressure sensor disposed within the storage chamber. In some embodiments, the support module further includes a plurality of first casters disposed at the bottom of the support truss; the hydraulic power module further includes a plurality of second casters disposed at the bottom of the hydraulic pump; The positioning element includes multiple positioning rods, which are inserted through the top of the supporting truss, and the storage chamber body is placed on the positioning rods. The hydraulic module also includes a controller, which is electrically connected to the rotating mechanism and is used to control the rotation speed of the rotating mechanism.

[0013] This application also provides a grouting method for similar material simulation tests, using a grouting system as described in any of the previous embodiments, the grouting method comprising: Slurry for similar material simulation tests is injected into the slurry storage chamber; The hydraulic power module is operated to inject hydraulic fluid into the hydraulic fluid storage chamber to pressurize the slurry storage chamber and push the pressure piston to move away from the hydraulic fluid storage chamber to push the slurry out. The slurry flow maintenance module is operated so that the rotating mechanism agitates the slurry in the slurry storage chamber.

[0014] In some embodiments, the grouting method further includes: adjusting the number of blades of the rotating component in the rotating mechanism according to the bleeding rate of the grout; and / or adjusting the rotation speed of the rotating mechanism; Adjust the rotation speed of the rotating mechanism according to the grouting conditions / grouting period.

[0015] In some embodiments, adjusting the rotation speed of the rotating mechanism according to the grouting conditions / grouting period includes: When grouting is paused during the grouting process, the rotation speed of the rotating mechanism is increased.

[0016] As can be seen from the above description, the grouting system and method for similar material simulation tests provided in this application, by setting up a storage module, includes a storage chamber body with a cavity; the storage chamber body includes a slurry storage chamber and a hydraulic fluid storage chamber separated by a cavity; the slurry storage chamber is used to receive / output slurry; the hydraulic fluid storage chamber is used to receive / output hydraulic fluid; a support module includes a support truss and a positioning element disposed on the support truss; the storage module is disposed on the support truss; the positioning element is used to position the storage module; a slurry flow state maintenance module is disposed in the storage chamber body; the slurry flow state maintenance module includes a pressure-bearing piston and a rotating mechanism sleeved in the pressure-bearing piston; the pressure-bearing piston... The piston is used to divide the storage chamber body into the slurry storage chamber and the hydraulic fluid storage chamber; the rotating mechanism is located in the slurry storage chamber; the rotating mechanism is used to stir the slurry in the slurry storage chamber; the hydraulic power module is used to inject hydraulic fluid into the hydraulic fluid storage chamber. It can realize the indoor inversion of the grouting water control technology of the new similar material simulation test based on traditional equipment, and replicate the opaque grouting environment and the slurry-rock coupling morphology after grouting in a visual perspective. It greatly enriches the concept of the full-scenario use of traditional similar material simulation test, and can provide a new path for in-depth exploration of the internal mechanism of grouting water control, deepening the reform of the grouting water control technology system, and achieving high-quality development in the field of mine water prevention and control. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the grouting system applied to similar material simulation tests according to an embodiment of this application; Figure 2 This is a side view of the grouting system according to an embodiment of this application; Figure 3 This is a schematic diagram of the slurry flow maintenance module according to an embodiment of this application; Figure 4 This is a schematic flowchart of a grouting method applied to a similar material simulation test according to an embodiment of this application. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0020] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application 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 after 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 only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] Conventional grouting simulation experiments typically target precast defect structures (such as precast cracks and faults, with geometric scales mostly on the centimeter level and small grout storage space) for saturated grouting or for studying the migration and diffusion laws of grout within a limited geometric scale. The grouting process is simple, the operation cycle is short, and usually no significant solid-water separation phenomenon occurs during the grouting process. Overall, the grouting operation is less affected by factors such as grouting procedures, duration, and pressure.

[0022] In the grouting process of similar material simulation tests, to achieve similarity between the physical parameters such as grout pumping pressure and grout pumping time and those actually injected into an opaque groundwater system, different procedures, grouting durations, grouting pressures, and grouting volumes need to be carried out for different grouting holes according to the simulated grouting scheme during the actual grouting process of a single similar material simulation test. Generally, the number of grouting holes is set at approximately 2-5, the grouting time for a single test is approximately 0.5-5 hours, and the grouting volume per hole is approximately 3-10 L. The specific values ​​need to be determined by comprehensive calculation based on the actual grouting conditions of each test and the relevant similarity ratio.

[0023] Therefore, compared to conventional grouting simulation experiments, visualized similar material simulation grouting experiments require strict design of the test scheme according to geometric, physical, and mechanical similarity ratios to achieve precise and flexible control of parameters such as grout pumping pressure, rate, time, and pumping volume, thereby enabling long-span and multi-hole circulation grouting operations. However, grouts all have significant water bleeding properties, and prolonged standing will result in solid-water separation, which seriously affects grout performance and grouting test results.

[0024] Based on this, this application provides a grouting system and grouting method for similar material simulation tests. By clicking the rotor to penetrate the grout storage chamber during pressurized grouting, the grout in the storage chamber is stirred in real time, which can effectively alleviate the degree of grout bleeding and extend the effective service life of the grout. This achieves controllable, quantitative and effective grouting, and realizes the scientificity and reliability of the visualized similar material simulation grouting test results.

[0025] See Figure 1 This application provides a grouting system for simulating similar materials, as described in its embodiments. The grouting system may include: The storage module includes a storage chamber body 11 with a cavity; the storage chamber body 11 includes a slurry storage chamber and a hydraulic fluid storage chamber separated from each other; the slurry storage chamber is used to receive / output slurry; the hydraulic fluid storage chamber is used to receive / output hydraulic fluid. The storage module is the main location for storing, pressurizing, and outputting slurry throughout the grouting process. The hydraulic fluid storage chamber is the main location for injecting hydraulic fluid through a pressurization pump and for storing, pressurizing, and draining the hydraulic fluid.

[0026] The support module includes a support truss 21 and a positioning element 22 disposed on the support truss 21; the storage module is disposed on the support truss 21; the positioning element 22 is used to position the storage module. The support module is the main structure supporting the storage chamber body 11 and its accessories, and can flexibly move the grouting equipment according to actual test requirements.

[0027] A slurry flow maintenance module 30 is disposed within the storage chamber body 11. The slurry flow maintenance module 30 includes a pressure-bearing piston 31 and a rotating mechanism sleeved within the pressure-bearing piston 31. The pressure-bearing piston 31 divides the storage chamber body 11 into a slurry storage chamber and a hydraulic fluid storage chamber. The rotating mechanism is disposed within the slurry storage chamber and is used to agitate the slurry within the slurry storage chamber. The size and shape of the pressure-bearing piston 31 are adapted to the size and shape of the storage chamber body 11; for example, the size of the pressure-bearing piston 31 can be slightly larger than the size of the storage chamber body 11. This ensures that the pressure-bearing piston 31 fits tightly against the inner wall of the storage chamber body 11, minimizing the entry of hydraulic fluid into the slurry.

[0028] The hydraulic power module is used to inject hydraulic fluid into the hydraulic fluid storage chamber. The hydraulic power module primarily uses hydraulic fluid as a pressure transmission medium to provide pressure to the storage chamber body 11.

[0029] The grouting system for similar material simulation testing provided in this application embodiment includes a storage module, comprising a storage chamber body 11 with a cavity; the storage chamber body 11 includes a slurry storage chamber and a hydraulic fluid storage chamber separated by partitions; the slurry storage chamber is used to receive / output slurry; the hydraulic fluid storage chamber is used to receive / output hydraulic fluid; a support module includes a support truss 21 and a positioning element 22 disposed on the support truss 21; the storage module is disposed on the support truss 21; the positioning element 22 is used to position the storage module; and a slurry flow maintenance module 30 is disposed on... The storage chamber body 11 is located within the slurry flow maintenance module 30, which includes a pressure-bearing piston 31 and a rotating mechanism fitted inside the pressure-bearing piston 31. The pressure-bearing piston 31 is used to divide the storage chamber body 11 into the slurry storage chamber and the hydraulic fluid storage chamber. The rotating mechanism is located inside the slurry storage chamber and is used to stir the slurry inside the slurry storage chamber. A hydraulic power module is used to inject hydraulic fluid into the hydraulic fluid storage chamber. This allows the slurry to maintain a persistent solid-water coupled flow state under pressure while minimizing the impact on the physical and mechanical properties of the slurry.

[0030] In some embodiments, the storage chamber body 11 may include a first end cap 12, a second end cap 13, multiple body segments (e.g., first body segment 111a, second body segment 111b, and third body segment 111c) disposed between the first end cap 12 and the second end cap 13, and multiple connectors. Adjacent body segments, as well as the first end cap 12 and the body segments, and the body segments and the second end cap 13, can be connected by the multiple connectors. That is, the multiple connectors are used to connect the first end cap 12, the second end cap 13, and the multiple body segments.

[0031] In some embodiments, the first end cap 12, the second end cap 13, and the plurality of body segments are coaxially arranged and each has a protruding structure 16. Each protruding structure 16 has a plurality of first through holes. The plurality of connectors are respectively arranged one-to-one with each of the plurality of first through holes. That is, for any protruding structure 16, the number of first through holes and the number of connectors can be the same. Thus, the connectors pass through the first through holes of the plurality of protruding structures 16 to connect the first end cap 12 and the second end cap 13 to the plurality of body segments.

[0032] In some embodiments, the connector may be a connecting rod 15. The first end cap 12, the second end cap 13, and the plurality of body segments may all be annular structures. The protruding structure 16 may also be annular, and the plurality of first through holes may be evenly distributed circumferentially on the annular structure to improve connection stability and improve the sealing of the storage chamber body 11.

[0033] In some embodiments, two second bearings 24 may be provided. Each second bearing 24 may have a second through hole, and at least one of the connecting members also passes through the second through hole to connect the storage chamber body 11 to the second bearing 24. The two second bearings 24 may be arranged opposite each other on both sides of the storage chamber body 11. This allows for a more secure fixation of the storage chamber body 11 after reversal, improving the reliability of reversal, etc. In some of these embodiments, see Figure 2 The first end cap 12 may have a slurry injection port 121 and a slurry discharge port 122. The main slurry inlet can be used to inject the prepared slurry into the storage chamber body 11. The storage module also includes a slurry discharge pipe 17 connected to the slurry discharge port 122. It should be understood that the other end of the slurry discharge pipe 17 can be connected to the target grouting area (not shown in the figure) to inject the slurry stored in the storage chamber body 11 into the target grouting area (not shown in the figure) for grouting in similar material simulation tests.

[0034] In some embodiments, the storage module may further include a pressure sensor 14 disposed within the storage chamber body 11. The pressure sensor 14 detects the dynamic pressure value of the slurry within the storage chamber body 11. The pressure sensor 14 can interact with the controller of the hydraulic power module, sending the detected actual slurry pressure value to the controller in real time and displaying it on the touch screen 42 of the hydraulic power module for easy viewing by the operator. This facilitates real-time adjustment of the hydraulic power module based on the difference between the actual pressure and the pumping pressure in similar material simulation tests.

[0035] In some of these embodiments, return Figure 1 The second end cap 13 may have a hydraulic fluid injection port 131 and a hydraulic fluid return port 132. The hydraulic pump 41 is connected to the hydraulic fluid injection port 131 through a hydraulic fluid injection pipe 18; the hydraulic pump 41 is connected to the hydraulic fluid return port 132 through a hydraulic fluid return pipe 19.

[0036] In some embodiments, reference Figure 3The rotating mechanism may include a first bearing 321, a motor 322, a rotating component 323, and a control component. The first bearing 321 supports the motor 322; the rotating component 323 is mounted on the first bearing 321; the rotating component 323 is used to stir the slurry in the slurry storage chamber; the control component is electrically connected to the motor 322 and is used to control the operation / stop of the motor 322 and drive the first bearing 321 to rotate the rotating component 323.

[0037] In some embodiments, the pressure-bearing piston 31 may be a layered pressure-bearing piston 31.

[0038] In some embodiments, the rotating component 323 may be a plurality of rotating blades. For example, it may be three rotating blades, which are fixed to the first bearing 321. The three rotating blades may be evenly distributed on the first bearing 321 to improve the uniformity of slurry mixing.

[0039] In some possible embodiments, the rotating component 323 may be detachably mounted on the first bearing 321. Multiple models of the rotating component 323 may be provided; for example, the number of rotating blades in different models of the rotating component 323 may vary. The model of the rotating blades can be adjusted according to the differences in the basic properties of the slurry mix used in simulation tests of different similar materials, namely, the differences in physical properties such as slurry fluidity, bleeding rate, initial setting time, and final setting time, to achieve the purpose of controlling the bleeding characteristics based on the mobility of different types of slurry properties. Specifically, the number of blades in the rotating component of the rotating mechanism can be adjusted according to the bleeding rate of the slurry. For example, for a more viscous slurry, its bleeding rate is smaller, and the number of blades in the rotating component 323 can be adjusted to a smaller number. For example, for a more sparse slurry, its bleeding rate is larger, and the number of blades in the rotating component 323 can be adjusted to a larger number.

[0040] In some embodiments, the rotating mechanism may further include a scale 326 disposed on the control element. The scale 326 may have graduations. The scale 326 extends away from the storage module, and the graduations corresponding to the intersection of the scale 326 with the storage chamber body 11 (e.g., with the second end cap 13) are used to indicate the grouting volume.

[0041] In some embodiments, the scale value of the ruler 326 can be set to 0 at the end near the piston, and the scale value can be gradually increased in the direction away from the storage module. Thus, when the pressure-bearing piston 31 moves towards the slurry storage chamber under the action of hydraulic fluid, the scale value on the ruler 326 corresponding to the second end cap 13 represents the amount of slurry injected into the target grouting area. Therefore, the amount of remaining slurry can be obtained by subtracting the amount of injected slurry from the capacity of the storage chamber body 11.

[0042] In some embodiments, the scale value of the ruler 326 at the end furthest from the piston can be set to 0, and the scale value can be gradually increased along the direction closer to the storage module. Thus, when the piston moves towards the slurry storage chamber under the action of hydraulic fluid, the scale value on the ruler 326 corresponding to the second end cap 13 represents the amount of remaining slurry. Therefore, subtracting the injected slurry from the capacity of the storage chamber body 11 to obtain the amount of remaining slurry gives the amount of slurry injected into the target grouting area.

[0043] In some embodiments, the control component may include a pressure-isolating cylinder 325, a control line 324 sleeved within the pressure-isolating cylinder 325, and a limiting member 327 passing through the pressure-isolating cylinder 325. One end of the control line 324 is electrically connected to the motor 322, and the other end may be electrically connected to an external power switch or to a hydraulic power module.

[0044] In some embodiments, the other end of the control line 324 may be electrically connected to the hydraulic power module to improve the integration of the grouting system and facilitate operation.

[0045] In some embodiments, the pressure-isolating cylinder 325 can be reused as the scale 326; the scale lines are provided on the surface of the pressure-isolating cylinder 325. This simplifies the structure and improves the stability and reliability of the scale 326. In some of these embodiments, return Figure 2 The support module may further include a reversing assembly disposed on the support truss 21; the reversing assembly may include at least one reversing pulley 23 disposed on the support truss 21 and a second bearing 24 sleeved within the reversing pulley 23; the storage module passes through the second bearing 24. The direction and position of the storage chamber body 11 can be finely adjusted by the reversing assembly.

[0046] In some embodiments, multiple reversing components, such as two, may be provided, symmetrically arranged on the support truss 21. This improves the support force on the storage module while facilitating adjustment of the storage module's orientation.

[0047] In some embodiments, the support module may further include a plurality of first casters 25 disposed at the bottom of the support truss 21. The first casters 25 facilitate coarse adjustment of the orientation and position of the storage chamber body 11. Fine adjustment of the orientation and position of the storage chamber body 11 is achieved in conjunction with the reversing assembly, enabling 360-degree rotation of the storage chamber body 11. This allows for better adjustment of the orientation and position of the storage chamber body 11, meeting the needs of more similar material grouting test scenarios and improving the simulation accuracy of the grouting process in similar material simulation tests.

[0048] In some embodiments, the positioning element 22 may include multiple positioning rods, which pass through the top of the support truss 21 and are positioned below the reversing assembly, with the storage chamber body 11 resting on the positioning rods. The number of positioning rods may specifically be the same as the number of reversing assemblies, for example, two rods symmetrically arranged on the support truss 21. For example, they may be positioned one-to-one below two reversing assemblies.

[0049] In some embodiments, the hydraulic power module may include a hydraulic pump 41, which contains a hydraulic fluid tank (not shown in the figure). The hydraulic power module also includes a touch-screen operating platform, through which pump pressure and pump flow commands can be set via a touch-screen display 42. Users can adjust and input pump pressure and flow commands via the touch-screen display 42. The hydraulic fluid tank may store hydraulic fluid, such as pure water or hydraulic oil.

[0050] In some embodiments, the hydraulic module may further include a controller electrically connected to the rotating mechanism for controlling the rotation speed of the rotating mechanism. Specifically, for slurries with a defined composition, the controller can adjust the rotation speed of the rotating mechanism according to the grouting conditions and grouting period. For example, in the early stages of grouting, before significant water bleeding occurs, the speed can be adjusted to a low speed; in the middle and later stages of grouting, the speed can be gradually increased to progressively intervene in the water bleeding process. For slurries with different compositions, the controller can adjust the rotation speed of the rotating mechanism according to the physical properties of the slurry, thereby reducing the degree of slurry segregation while minimizing the negative effects of excessive stirring, such as prolonged setting time, increased wear of solid particles, accelerated water evaporation, excessively high air content, and disruption of slurry homogeneity, ensuring scientific and reasonable slurry stirring operations.

[0051] For example, during grouting, when grouting is paused, the rotation speed of motor 322 can be increased by the controller to appropriately increase the stirring intensity, which can better reduce the bleeding degree of static grout during non-grouting processes. For example, in the initial stage of grouting, running motor 322 at a lower rotation speed can slow down the initiation of bleeding while avoiding the negative effects of over-stirring. For example, in the middle and later stages of grouting (e.g., after more than half of the set grouting time), the rotation speed of motor 322 can be appropriately increased to appropriately increase the stirring intensity, which can reduce the negative effects of over-stirring while controlling the bleeding degree of grout.

[0052] For example, the rotation speed of the rotating mechanism can be adjusted according to the bleeding rate of the slurry. For instance, for different slurries, such as a more viscous slurry with a lower bleeding rate, the rotation speed of the motor 322 can be appropriately reduced; while for a more sparse slurry with a higher bleeding rate, the rotation speed of the motor 322 can be appropriately increased.

[0053] In some embodiments, the hydraulic pump 41 may also be equipped with an audible and visual alarm light, and the controller is further configured to control the audible and visual alarm light to perform an audible and visual alarm in response to the received pressure sensor 14 detecting that the actual pressure value of the slurry or the dynamic pressure value of the slurry is greater than a threshold.

[0054] In some embodiments, the hydraulic power module further includes a plurality of second casters 43 disposed at the bottom of the hydraulic pump 41, facilitating movement of the hydraulic power module.

[0055] In the grouting system applied to similar material simulation tests according to this embodiment, in the initial state, the pressure-bearing piston 31 of the grout flow maintenance module 30 is tightly fitted with the second end cap 13 of the storage chamber body 11 to maximize the storage capacity of the grout storage chamber. The pleated pressure-bearing piston 31 is tightly fitted with the inner wall of the storage chamber body 11. The ball valve switch of the grout inlet 121 on the first end cap 12 of the storage chamber body 11 is in the open state, and the ball valve switch of the grout outlet 122 is in the closed state. The ball valve switch of the hydraulic fluid inlet 131 on the second end cap of the storage chamber body 11 is in the open state, and the ball valve switch of the hydraulic fluid return outlet 132 is in the closed state. In actual use, a predetermined amount of grout is first prepared according to a predetermined ratio based on the test requirements. The grout is then injected into the grout storage chamber through the grout inlet 121. After grouting is completed, the ball valve switch of the grout inlet 121 is closed. After connecting the slurry discharge pipe 17 to the target grouting area (not shown in the figure), open the ball valve switch of the slurry discharge outlet 122. Set the pumping pressure and pumping volume of the hydraulic pump 41 on the touch screen 42 according to the test requirements, start the hydraulic pump 41, and inject hydraulic fluid into the slurry storage chamber through the hydraulic fluid injection port 131 to pressurize the slurry storage chamber. At the same time, start the rotor through the control line 324. The first bearing 321 drives the rotating part 323 to continuously stir the slurry in the slurry storage chamber. The pressurized hydraulic fluid injected into the slurry storage chamber pushes the pressure piston 31 of the slurry flow state maintenance module 30 to move at a constant speed towards the first end cover 12 of the storage chamber body 11, transmitting pressure to the slurry in the slurry storage chamber. The slurry is then pushed out through the slurry discharge outlet 122 to achieve the purpose of grouting. During grouting, the pressure isolation cylinder 325, the limiting component 327, and the scale 326 are pushed towards the first end cover 12 at a uniform speed under the action of the pressure-bearing piston 31. The real-time grouting volume and the remaining grout volume in the main chamber can be monitored by the scale value at the intersection of the scale 326 and the second end cover 13. After all the grout in the grout storage chamber has been grouted, the pressure-bearing piston 31 is engaged with the first end cover 12, and at the same time, the limiting component 327 is engaged with the second end cover 13.

[0056] After the grouting operation is completed, stop injecting hydraulic fluid, close the ball valve switch of hydraulic fluid injection port 131, and open the ball valve switches of hydraulic fluid return port 132 and grout injection port 121. Inject high-pressure gas into the storage chamber body 11 through grout injection port 121, pushing the grout flow maintenance module 30 to the initialization position, i.e., the pressure-bearing piston 31 is tightly fitted with the second end cover 13. Close the ball valve switches of hydraulic fluid return pipe 19 and grout injection port 121 (i.e., high-pressure gas injection port), and the grouting for a single similar material simulation test is completed.

[0057] Based on the same inventive concept, corresponding to the grouting system applied to similar material simulation tests in any of the above embodiments, this application also provides a grouting method applied to similar material simulation tests.

[0058] refer to Figure 4 The grouting method applied to similar material simulation tests may include: Slurry for similar material simulation tests is injected into the slurry storage chamber; The hydraulic power module is operated to inject hydraulic fluid into the hydraulic fluid storage chamber to pressurize the slurry storage chamber and push the pressure piston 31 to move away from the hydraulic fluid storage chamber to push the slurry out. The slurry flow maintenance module 30 is operated so that the rotating mechanism agitates the slurry in the slurry storage chamber.

[0059] In some embodiments, the hydraulic power module further includes a controller electrically connected to the rotating mechanism for controlling the rotational speed of the rotating mechanism. The grouting method may also include increasing the rotational speed of the rotating mechanism when grouting is paused during the grouting process. Specifically, the rotational speed of the rotating mechanism can be increased via the controller.

[0060] The grouting method described above is implemented by the corresponding grouting system in any of the foregoing embodiments and has the beneficial effects of the corresponding grouting system embodiments, which will not be repeated here.

[0061] 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 disclosure, 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 different aspects of the embodiments of this disclosure as described above, which are not provided in detail for the sake of brevity.

[0062] Although this disclosure has been described in conjunction with specific embodiments thereof, many substitutions, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description.

[0063] This disclosure is 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 this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A grouting system for use in simulation tests of similar materials, characterized in that, include: The storage module includes a storage chamber body with a cavity; the storage chamber body includes a slurry storage chamber and a hydraulic fluid storage chamber that are separated from each other; The slurry storage chamber is used to receive / output slurry; the hydraulic fluid storage chamber is used to receive / output hydraulic fluid. A support module includes a support truss and positioning elements disposed on the support truss; The storage module is mounted on the support truss; the positioning element is used to position the storage module. A slurry flow maintenance module is disposed within the storage chamber body; the slurry flow maintenance module includes a pressure-bearing piston and a rotating mechanism sleeved within the pressure-bearing piston; the pressure-bearing piston is used to divide the storage chamber body into the slurry storage chamber and the hydraulic fluid storage chamber; the rotating mechanism is disposed within the slurry storage chamber; The rotating mechanism is used to stir the slurry in the slurry storage chamber; A hydraulic power module is used to inject hydraulic fluid into the hydraulic fluid storage chamber.

2. The grouting system for similar material simulation testing according to claim 1, characterized in that, The rotating mechanism includes a first bearing, a motor, a rotating component, and a control component; the first bearing supports the motor; the rotating component is mounted on the first bearing; the rotating component is used to stir the slurry in the slurry storage chamber. The control unit is electrically connected to the motor and is used to control the motor to run / stop and drive the first bearing to rotate the rotating component.

3. The grouting system for similar material simulation testing according to claim 2, characterized in that, The rotating mechanism also includes a scale, which is disposed on the control component; the scale has graduation lines; the scale extends away from the storage module so that the graduation line corresponding to the intersection of the scale and the storage chamber body is used to indicate the grouting volume.

4. The grouting system for similar material simulation testing according to claim 3, characterized in that, The control component includes a pressure-isolating cylinder, a control line sleeved inside the pressure-isolating cylinder, and a limiting member passing through the pressure-isolating cylinder; The pressure-isolating cylinder is reused as the scale; the scale lines are provided on the surface of the pressure-isolating cylinder. The control line is electrically connected to the motor; the control line is also electrically connected to the hydraulic power module.

5. The grouting system for similar material simulation testing according to claim 1, characterized in that, The support module further includes a reversing assembly disposed on the support truss; the reversing assembly includes at least one reversing pulley disposed on the support truss and a second bearing sleeved in the reversing pulley; the storage module passes through the second bearing.

6. The grouting system for similar material simulation testing according to claim 5, characterized in that, The storage chamber body includes a first end cover, a second end cover, multiple body segments disposed between the first end cover and the second end cover, and multiple connecting parts; The first end cap, the second end cap, and the plurality of body segments are all coaxially arranged and each has a protruding structure. The protruding structure has a plurality of first through holes, and the plurality of connectors are respectively arranged in a one-to-one correspondence with the plurality of first through holes. The connectors pass through the plurality of first through holes of the protruding structure to connect the first end cap and the second end cap to the plurality of body segments. The second bearing has a second through hole, and at least one of the connecting members also passes through the second through hole to connect the storage chamber body to the second bearing.

7. The grouting system for similar material simulation testing according to claim 6, characterized in that, The hydraulic power module includes a hydraulic pump, and the hydraulic pump is equipped with a hydraulic fluid tank; the hydraulic pump is also equipped with a touch screen display. The second end cap has a hydraulic fluid injection port and a hydraulic fluid return port; the hydraulic pump is connected to the hydraulic fluid injection port through a hydraulic fluid injection pipe; the hydraulic pump is connected to the hydraulic fluid return port through a hydraulic fluid return pipe. The first end cap has a slurry injection port and a slurry discharge port; the storage module also includes a slurry discharge pipe connected to the slurry discharge port; The storage module also includes a pressure sensor disposed within the storage chamber.

8. The grouting system for similar material simulation testing according to claim 7, characterized in that, The support module also includes a plurality of first casters disposed at the bottom of the support truss; the hydraulic power module also includes a plurality of second casters disposed at the bottom of the hydraulic pump; The positioning element includes multiple positioning rods, which are inserted through the top of the supporting truss, and the storage chamber body is placed on the positioning rods. The hydraulic module also includes a controller, which is electrically connected to the rotating mechanism and is used to control the rotation speed of the rotating mechanism.

9. A grouting method for use in simulation tests of similar materials, characterized in that, Grouting is performed using the grouting system as described in any one of claims 1-8, wherein the grouting method comprises: Slurry for similar material simulation tests is injected into the slurry storage chamber; The hydraulic power module is operated to inject hydraulic fluid into the hydraulic fluid storage chamber to pressurize the slurry storage chamber and push the pressure piston to move away from the hydraulic fluid storage chamber to push the slurry out. The slurry flow maintenance module is operated so that the rotating mechanism agitates the slurry in the slurry storage chamber.

10. The grouting method according to claim 9, characterized in that, The grouting method further includes: Adjust the number of blades in the rotating component of the rotating mechanism according to the bleeding rate of the slurry; and / or adjust the rotation speed of the rotating mechanism; Adjust the rotation speed of the rotating mechanism according to the grouting conditions / grouting period.

Images