A new pore grouting material leakage experiment device

Abstract

The application discloses a new pore grouting material leakage experiment device, relates to the technical field of grouting material testing, and comprises a fixed base, a fixed frame body is arranged on the fixed base, an I-shaped plate is arranged in the middle of the fixed frame body, a test water channel mechanism is arranged on the I-shaped plate, a rotary displacement mechanism is arranged between the test water channel mechanism and the I-shaped plate, an angle deflection mechanism is arranged at the bottom of the test water channel mechanism, the angle deflection mechanism is connected with a mounting shell, a plurality of mounting mechanisms are arranged in the mounting shell, a grouting pipeline is arranged in the mounting mechanism, the fixed frame body is fixedly connected with a first fixing frame and a second fixing frame, a control pressurizing mechanism is arranged on the first fixing frame, a reciprocating pressurizing mechanism is arranged on the second fixing frame, and the reciprocating pressurizing mechanism is connected with a tail end control sleeve mechanism. The rotary displacement mechanism and the angle deflection mechanism are arranged to adjust the installation angle of the grouting pipeline, so that different installation offset angles are simulated, and the efficiency of grouting material leakage experiments is improved.

Description

Technical Field

[0001] This invention relates to the field of grouting material testing technology, specifically a novel experimental device for grouting material leakage in ducts. Background Technology

[0002] In geotechnical engineering projects such as tunnel support, foundation reinforcement, and slope anchoring, grouting is a key technology for enhancing the strength of soil and rock masses and sealing seepage channels. The grouting material is injected into pre-designed channels or fracture networks under pressure, and its anti-leakage performance after solidification directly affects the long-term stability and safety of the project. Therefore, accurate evaluation of its leakage characteristics under simulated real-world conditions is crucial during the material development and engineering selection stages. However, existing laboratory testing methods and equipment have significant limitations: Traditional leakage tests often employ simple devices with fixed angles and constant water pressure (such as vertically or horizontally placed seepage pipes). This fails to reflect the impact of various tilt angles and orientation changes of grouting channels in actual engineering projects, as well as fluctuations in groundwater pressure (such as tides, water level changes, and pressure pulsations caused by construction disturbances) on the material's permeability. Consequently, the experimental data has poor correlation with actual working conditions.

[0003] The testing objects and parameter adjustments are difficult and inefficient: Existing equipment is often designed for pipes or specimens with specific inner diameters. When changing to grouting pipes or simulated channels of different specifications (diameters), it is necessary to replace or significantly adjust the core components of the experimental device, which is cumbersome and makes it difficult to ensure the consistency of boundary conditions between different batches of experiments. At the same time, the ability to precisely control water pressure and simulate dynamic changes is insufficient.

[0004] The lack of consideration for the impact of "installation offset" of the grouting body: In actual drilling, the grouting pipe may deviate from the centerline of the borehole at a certain angle (i.e., "offset"), resulting in uneven annular thickness of the grouting body. Existing experimental setups typically assume an ideal concentric state, making it impossible to study the impact of this common installation defect on the development of the leakage path of the material under bias pressure.

[0005] The experimental process has a low degree of automation and integration: many aspects such as pressure loading, data acquisition, and working condition changes rely on manual operation and recording, making it difficult to accurately apply complex cyclic loads (such as sinusoidal wave and pulse wave water pressure) and to synchronously and automatically monitor and record multiple parameters (pressure, flow rate, time, angle), thus posing challenges to the reliability and repeatability of experimental results.

[0006] Functional dispersion and weak comprehensive simulation capabilities: Leakage testing, angle simulation, pressure regulation, dynamic loading and other functions are usually implemented by a combination of multiple independent devices, resulting in low system integration, large space occupation, and complex collaborative control of each unit. Summary of the Invention

[0007] This invention provides a novel experimental device for grouting material leakage in ducts, which solves the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A novel grouting material leakage test device includes a fixed base with a fixed frame on the base. An I-beam is located in the middle of the fixed frame, and a test water channel mechanism is mounted on the I-beam. A rotational displacement mechanism is located between the test water channel mechanism and the I-beam. An angle deflection mechanism is located at the bottom of the test water channel mechanism and is connected to a mounting shell. Several mounting mechanisms are located inside the mounting shell, and each mounting mechanism contains a grouting pipe. The fixed frame is fixedly connected to a first fixed frame and a second fixed frame. A control pressurization mechanism is located on the first fixed frame, and a reciprocating pressurization mechanism is located on the second fixed frame. The reciprocating pressurization mechanism is connected to an end control sleeve mechanism. The rotational displacement mechanism drives the test water channel mechanism to rotate and shift, the angle deflection mechanism drives the mounting shell to deflect, the mounting mechanisms are used to install grouting pipes of different diameters, the control pressurization mechanism regulates the water pressure inside the test water channel mechanism, thereby directly controlling the water pressure on the grouting pipe, and the reciprocating pressurization mechanism compresses the air inside the test water channel mechanism, causing the water pressure inside the test water channel mechanism to fluctuate back and forth, thus simulating different states.

[0009] As a preferred embodiment of the present invention, the test waterway mechanism includes a pipe connector fixed to an I-beam, an upper vertical pipe fixedly connected to the upper part of the pipe connector, a U-shaped pipe fixedly connected to the upper part of the upper vertical pipe, the bottoms of the upper vertical pipe and the U-shaped pipe being connected, and a lower vertical pipe rotatably connected to the lower part of the pipe connector.

[0010] As a preferred embodiment of the present invention, the rotary displacement mechanism includes a first motor fixed to the I-beam plate, the output shaft of the first motor being fixedly connected to a first gear, and a second gear being fixedly connected to the outer side of the lower vertical tube, with the first gear and the second gear meshing.

[0011] As a preferred embodiment of the present invention, the angle deflection mechanism includes a fixed ring fixed to the outside of the lower vertical tube, a telescopic tube fixedly connected to the lower part of the fixed ring, a deflection tube fixedly connected to the end of the telescopic tube away from the lower vertical tube, two symmetrically arranged first position seats fixedly connected to the bottom of the fixed ring, a linear motor rotatably connected to the first position seats, a second position seat rotatably connected to the end of the linear motor away from the first position seats, and a collar fixedly connected to the second position seat, the collar being fixed to the outside of the deflection tube.

[0012] As a preferred embodiment of the present invention, the installation mechanism includes a through pipe disposed within the installation housing, a water channel being provided within the installation housing, the through pipe being connected to a deflection pipe via the water channel, an on / off valve being provided on the through pipe, the on / off valve being connected to an installation sleeve, and a locking bolt being threadedly connected to the installation sleeve. The inner diameter of the installation sleeve is different on different installation mechanisms, and grouting material is provided inside the grouting pipe.

[0013] As a preferred embodiment of the present invention, the pressurization control mechanism includes a hydraulic telescopic rod fixed to a first fixed frame. The end of the hydraulic telescopic rod away from the first fixed frame is fixedly connected to a first sliding sleeve. The first sliding sleeve is sleeved on one end of a U-shaped tube, and the first sliding sleeve and the U-shaped tube are slidably connected. The first sliding sleeve is provided with a first water-air channel and a first pressure gauge. The first water-air channel is provided with an electrically controlled switch valve. The first water-air channel is used to supply water or air to the U-shaped tube.

[0014] As a preferred embodiment of the present invention, the reciprocating pressurizing mechanism includes a motor frame fixed on a second fixed frame, a first motor mounted on the motor frame, an output shaft of the first motor fixedly connected to a rotating shaft, a rotating frame fixedly connected to the rotating shaft, a second motor mounted inside the rotating frame, an output shaft of the second motor fixedly connected to a threaded rod, the threaded rod and the rotating frame being rotatably connected, an adjusting block being threadedly connected to the threaded rod, the adjusting block and the rotating frame being slidably connected, an adjusting block being fixedly connected to a swing rod shaft, the swing rod shaft being rotatably connected to a swing rod, and the swing rod being rotatably connected to a swing rod seat.

[0015] As a preferred embodiment of the present invention, the end control sleeve mechanism includes a lifting rod fixedly connected to the swing rod seat, the lifting rod passing through the second fixed frame, the lifting rod and the second fixed frame being slidably connected, the end of the lifting rod away from the swing rod seat being fixedly connected to the second sliding sleeve, the second sliding sleeve being sleeved on the end of the U-shaped tube away from the first sliding sleeve, the second sliding sleeve and the U-shaped tube being slidably connected, and the second sliding sleeve being provided with a second water vapor channel and a second pressure gauge.

[0016] As a preferred embodiment of the present invention, the inner side of the mounting shell is provided with a plurality of cameras, and the inner wall of the grouting pipe is provided with pressure strain gauges and conductive test plates.

[0017] The present invention has the following advantages: Compared with existing technologies, the novel grouting material leakage experimental device provided by this invention achieves significant breakthroughs in the realism of working condition simulation, the flexibility of experimental parameters, and the automation of the testing process. Its core advantage lies in constructing a highly flexible and precisely controllable multi-dimensional experimental environment. Through a rotational displacement mechanism, the horizontal orientation of the test channel mechanism and the grouting pipe within it can be easily changed, simulating the direction of cracks in different directions. More importantly, the angle deflection mechanism can drive the mounting shell to deflect at a large angle in the vertical plane, thereby precisely setting the tilt angle of the grouting pipe to study the effects of gravity and offset angle on leakage. The combination of these two technologies enables the simulation of arbitrary postures of the grouting pipe in three-dimensional space, greatly expanding the range of experimental working conditions.

[0018] This innovative device integrates two loading modes: static constant pressure and dynamic alternating pressure, enabling the simulation of more complex actual hydrogeological conditions. The control pressurization mechanism, as the main pressure source, precisely injects water or gas into the U-shaped test channel system, establishing, maintaining, and fine-tuning the static water pressure through precision valves and pressure gauges. The independent reciprocating pressurization mechanism is a sophisticated mechanical drive unit that, through a motor, threaded rod, and connecting rod, drives the end control sleeve mechanism to regularly compress and release one end of the U-shaped tube, thereby generating dynamic water pressures such as sine waves and pulse waves with adjustable amplitude and frequency within the channel system. This combined "static load + dynamic load" pressure simulation capability allows the device to study the long-term impermeability and fatigue characteristics of grouting materials under various water pressure conditions, including stable seepage, sudden pressure changes, and periodic fluctuations.

[0019] Furthermore, the device boasts efficient parameter adaptation capabilities and excellent experimental convenience. The mounting housing houses multiple parallel mounting mechanisms with mounting sleeves of varying inner diameters, equipped with on / off valves. During experiments, grouting pipes of the appropriate diameter can be quickly connected to the system without replacing the main unit. All adjustment mechanisms (rotation, deflection, pressure control) can be automatically controlled via motor or hydraulic drive and linked with the data acquisition system to achieve programmed operation and real-time monitoring of the experimental process. The overall device features a compact structure and highly integrated functions, providing a powerful, reliable, and efficient experimental platform for the research and performance evaluation of novel grouting materials. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a first-view structural schematic diagram of a novel grouting material leakage test device.

[0022] Figure 2 This is a schematic diagram of the structure from a second perspective of a novel grouting material leakage test device.

[0023] Figure 3 This is a third-view structural schematic diagram of a novel grouting material leakage test device.

[0024] Figure 4 This is a schematic diagram of the reciprocating pressurization mechanism in a new type of grouting material leakage test device.

[0025] Figure 5 This is a schematic diagram of the installation mechanism in a new grouting material leakage test device.

[0026] In the diagram: 1. Fixed base; 2. Fixed frame; 3. I-beam; 4. Test waterway mechanism; 401. Pipe connection seat; 402. Upper vertical pipe; 403. U-shaped pipe; 404. Lower vertical pipe; 5. Rotation and positioning mechanism; 501. First motor; 502. First gear; 503. Second gear; 6. Angle deflection mechanism; 601. Fixed ring; 602. Telescopic pipe; 603. Deflection pipe; 604. First positioning seat; 605. Linear motor; 606. Second positioning seat; 607. Collar; 7. Mounting shell; 8. Mounting mechanism; 801. Through pipe; 802. On / off valve; 803. Mounting sleeve; 804. Locking bolt; 9. First fixing bracket; 10. Second fixed frame; 11. Control pressurization mechanism; 1101. Hydraulic telescopic rod; 1102. First sliding sleeve; 1103. First water-air channel; 1104. First pressure gauge; 12. Reciprocating pressurization mechanism; 1201. Motor frame; 1202. First motor; 1203. Rotating shaft; 1204. Rotating frame; 1205. Second motor; 1206. Threaded rod; 1207. Adjusting block; 1208. Swing rod shaft; 1209. Swing rod; 1210. Swing rod seat; 13. End control sleeve mechanism; 1301. Lifting rod; 1302. Second sliding sleeve; 1303. Second water-air channel; 1304. Second pressure gauge; 14. Grouting pipe. Detailed Implementation

[0027] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0028] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0029] For examples, please refer to Figures 1-5 A novel grouting material leakage test device includes a fixed base 1, a fixed frame 2 on the fixed base 1, an I-beam 3 in the middle of the fixed frame 2, a test water channel mechanism 4 on the I-beam 3, a rotation and displacement mechanism 5 between the test water channel mechanism 4 and the I-beam 3, an angle deflection mechanism 6 at the bottom of the test water channel mechanism 4, the angle deflection mechanism 6 connected to a mounting shell 7, a plurality of mounting mechanisms 8 inside the mounting shell 7, and grouting pipes 14 inside the mounting mechanisms 8. The fixed frame 2 is fixedly connected to a first fixed frame 9 and a second fixed frame 10. The first fixed frame 9 is equipped with a pressure control mechanism 11, and the second fixed frame 10 is also fixedly connected to a first fixed frame 9 and a second fixed frame 10. The fixed frame 10 is equipped with a reciprocating pressurizing mechanism 12, which is connected to the end control sleeve mechanism 13; the rotation displacement mechanism 5 is used to drive the test water channel mechanism 4 to rotate and shift, the angle deflection mechanism 6 is used to drive the mounting shell 7 to deflect, the mounting mechanism 8 is used to install grouting pipes 14 of different diameters, the control pressurizing mechanism 11 is used to regulate the water pressure inside the test water channel mechanism 4, thereby directly regulating the water pressure on the grouting pipe 14, and the reciprocating pressurizing mechanism 12 is used to squeeze the air inside the test water channel mechanism 4, thereby causing the water pressure inside the test water channel mechanism 4 to change back and forth, thereby simulating different states.

[0030] The test waterway mechanism 4 includes a pipe connector 401 fixed to the I-beam 3. An upper vertical pipe 402 is fixedly connected to the upper part of the pipe connector 401, and a U-shaped pipe 403 is fixedly connected to the upper part of the upper vertical pipe 402. The bottoms of the upper vertical pipe 402 and the U-shaped pipe 403 are connected. A lower vertical pipe 404 is rotatably connected to the lower part of the pipe connector 401. The rotational displacement mechanism 5 includes a first motor 501 fixed to the I-beam 3. A first gear 502 is fixedly connected to the output shaft of the first motor 501, and a second gear 503 is fixedly connected to the outer side of the lower vertical pipe 404. The first gear 502 and the second gear 503 mesh. The angle deflection mechanism 6 includes a fixing ring 601 fixed to the outside of the lower vertical tube 404. The lower part of the fixing ring 601 is fixedly connected to a telescopic tube 602. The end of the telescopic tube 602 away from the lower vertical tube 404 is fixedly connected to a deflection tube 603. The bottom of the fixing ring 601 is fixedly connected to two symmetrically arranged first position seats 604. The first position seats 604 are rotatably connected to a linear motor 605. The end of the linear motor 605 away from the first position seats 604 is rotatably connected to a second position seat 606. The second position seat 606 is fixedly connected to a collar 607, which is fixed to the outside of the deflection tube 603.

[0031] Specifically, the first drive gear 502 meshes with the second gear 503 fixed on the lower vertical tube 404, thereby precisely driving the lower vertical tube 404 and all its lower connecting parts to rotate and position around the vertical axis from 0 to 360°. Synchronously controlling the extension and retraction of the two linear motors 605 allows the deflection tube 603 to perform pitch motion around the virtual hinge point at the lower end of the fixed ring 601 in the vertical plane, achieving stepless adjustment of the tilt angle.

[0032] The installation mechanism 8 includes a through pipe 801 located inside the installation housing 7. The installation housing 7 has a water channel. The through pipe 801 is connected to the deflection pipe 603 through the water channel. The through pipe 801 is equipped with an on / off valve 802. The on / off valve 802 is connected to the installation sleeve 803. The installation sleeve 803 is threadedly connected to the locking bolt 804. The inner diameter of the installation sleeve 803 on different installation mechanisms 8 is different. The grouting pipe 14 is filled with grouting material.

[0033] Specifically, the mounting sleeve 803 is connected to the outlet of the on / off valve 802, and grouting pipes 14 with different inner diameters can be quickly clamped by the locking bolt 804. Each mounting sleeve 803 has a different inner diameter to accommodate a series of test specimens. The grouting pipe 14 is already filled with and cured with the grouting material to be tested.

[0034] The pressurization control mechanism 11 includes a hydraulic telescopic rod 1101 fixed on the first fixed frame 9. The end of the hydraulic telescopic rod 1101 away from the first fixed frame 9 is fixedly connected to a first sliding sleeve 1102. The first sliding sleeve 1102 is sleeved on one end of the U-shaped tube 403. The first sliding sleeve 1102 and the U-shaped tube 403 are slidably connected. The first sliding sleeve 1102 is provided with a first water-air channel 1103 and a first pressure gauge 1104. The first water-air channel 1103 is provided with an electrically controlled switch valve. The first water-air channel 1103 is used to supply water or air to the U-shaped tube 403.

[0035] Specifically, the hydraulic telescopic rod 1101 drives the first sliding sleeve 1102 to slide along one end of the U-shaped tube 403 and achieve dynamic sealing. The first sliding sleeve 1102 is provided with a first water-air channel 1103 (connecting a precision water pump, water tank and air compressor, and equipped with an electrically controlled switch valve) and a first pressure gauge 1104, which are used for water injection, air venting and setting static pressure.

[0036] The reciprocating pressurizing mechanism 12 includes a motor frame 1201 fixed on a second fixed frame 10. A first motor 1202 is provided on the motor frame 1201. The output shaft of the first motor 1202 is fixedly connected to a rotating shaft 1203. The rotating shaft 1203 is fixedly connected to a rotating frame 1204. A second motor 1205 is provided inside the rotating frame 1204. The output shaft of the second motor 1205 is fixedly connected to a threaded rod 1206. The threaded rod 1206 and the rotating frame 1204 are rotatably connected. The threaded rod 1206 is threadedly connected to an adjusting block 1207. The adjusting block 1207 and the rotating frame 1204 are slidably connected. The adjusting block 1207 is fixedly connected to a swing rod shaft 1208. The swing rod shaft 1208 is rotatably connected to a swing rod 1209. The swing rod 1209 is rotatably connected to a swing rod seat 1210. The end control sleeve mechanism 13 includes a lifting rod 1301 fixedly connected to the swing rod seat 1210. The lifting rod 1301 passes through the second fixed frame 10 and is slidably connected to the second fixed frame 10. The end of the lifting rod 1301 away from the swing rod seat 1210 is fixedly connected to the second sliding sleeve 1302. The second sliding sleeve 1302 is sleeved on the end of the U-shaped tube 403 away from the first sliding sleeve 1102. The second sliding sleeve 1302 and the U-shaped tube 403 are slidably connected. The second sliding sleeve 1302 is provided with a second water and air channel 1303 and a second pressure gauge 1304.

[0037] Specifically, the first motor 1202 drives the rotating shaft 1203 and the rotating frame 1204 to rotate as a whole. The second motor 1205 drives the threaded rod 1206, causing the adjusting block 1207 to move linearly within the rotating frame 1204, thereby changing the position of the swing rod shaft 1208. Through the hinge between the swing rod 1209 and the swing rod seat 1210, the composite motion of the rotating frame 1204 is converted into the precise linear reciprocating motion of the lifting rod 1301. The lifting rod 1301 of the end control sleeve mechanism 13 is fixed to the swing rod seat 1210, and its lower end, the second sliding sleeve 1302, is sealed and fitted onto the other end of the U-shaped tube 403, and is provided with a second pressure gauge 1304 and a second water-air channel 1303 (for adding water or venting air when necessary). The operation of the reciprocating pressurization mechanism 12 causes the second sliding sleeve 1302 to periodically compress and release the end of the U-shaped tube, generating dynamic pressure.

[0038] The inner side of the mounting shell 7 is equipped with several cameras, and the inner wall of the grouting pipe 14 is equipped with pressure strain gauges and conductive test plates.

[0039] The workflow of this invention is as follows: Specimen preparation and installation: Prepare grouting materials with different formulations, inject them into pipes of different inner diameters, and cure them into specimens (grouting pipe 14). According to the experimental design, select one specimen, install the corresponding inner diameter mounting sleeve 803, and lock it. Open the on / off valve 802 for this circuit and close the others.

[0040] Spatial attitude setting: Azimuth angle: By controlling the first motor 501, the lower vertical tube 404 and the specimen are rotated to a preset horizontal azimuth angle (such as 0°, 45°, 90°, etc.).

[0041] Tilt angle: By controlling the synchronous extension and retraction of two linear motors 605, the mounting shell 7 and the specimen are deflected to a preset vertical tilt angle (such as 0° horizontal, 30°, 60°, 90° vertical).

[0042] System water injection and static pressurization: By controlling the first water-air channel 1103 of the pressurization mechanism 11, degassed water is injected into the entire pipeline system (including U-shaped pipe 403, lower vertical pipe 404, deflection pipe 603, water channel of mounting shell 7, and grouting pipe 14) and the air is purged. Then, the position of the first sliding sleeve 1102 is finely adjusted by using the hydraulic telescopic rod 1101 or compressed air is injected to precisely adjust the static water pressure of the system to the preset value P0, which is monitored by the first pressure gauge 1104.

[0043] Dynamic pressure loading (optional): If dynamic water pressure needs to be simulated, the reciprocating pressurization mechanism 12 is activated. According to the preset dynamic pressure waveform (such as a sine wave), the control system is programmed to drive the first motor 1202 and the second motor 1205 to move in coordination, causing the second sliding sleeve 1302 to generate a corresponding reciprocating displacement, superimposing the dynamic pressure ΔP(t) on the static pressure P0. The second pressure gauge 1304 monitors the dynamic pressure changes.

[0044] Real-time monitoring and data acquisition of multiple parameters: Leakage monitoring: Place a precision electronic balance under the mounting shell 7, continuously weigh the amount of water that leaks out, and calculate the leakage rate.

[0045] Visual monitoring: Use an internal camera to observe whether there is water seepage or expansion of wet areas on the outer wall and interface of the specimen.

[0046] Internal monitoring: Collect signals from pressure strain gauges embedded in the inner wall of grouting pipe 14 to analyze internal stress changes; collect signals from conductive test pieces to determine the location of the seepage front and changes in internal moisture content by measuring resistance changes.

[0047] System pressure: Record the data from the first and second pressure gauges simultaneously.

[0048] Experiment Termination and Specimen Analysis: When the experiment reaches the preset time, leakage rate standard, or a failure signal is detected, pressure loading is stopped, and system pressure is released. The specimen is disassembled and sectioned for analysis of leakage paths, modes, and mechanisms, based on monitoring data.

[0049] Multi-condition system experiment: By changing the specimen, adjusting the angle, and changing the static / dynamic pressure parameters, repeating steps 2-6, the relationship between the grouting material performance and variables under various working conditions can be systematically studied.

[0050] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel grouting material leakage test device, comprising a fixed base, characterized in that, The fixed base is equipped with a fixed frame, with an I-beam in the middle. A test water channel mechanism is mounted on the I-beam, and a rotational displacement mechanism is located between the test water channel mechanism and the I-beam. An angle deflection mechanism is located at the bottom of the test water channel mechanism, which is connected to a mounting shell. Several mounting mechanisms are located inside the mounting shell, and grouting pipes are installed within each mounting mechanism. The fixed frame is fixedly connected to a first fixed frame and a second fixed frame. A control pressurization mechanism is located on the first fixed frame, and a reciprocating pressurization mechanism is located on the second fixed frame. The reciprocating pressurization mechanism is connected to an end control sleeve mechanism. The rotational displacement mechanism is used to drive the test water channel mechanism to rotate and shift, the angle deflection mechanism is used to drive the mounting shell to deflect, the mounting mechanisms are used to install grouting pipes of different diameters, the control pressurization mechanism is used to regulate the water pressure inside the test water channel mechanism, thereby directly regulating the water pressure on the grouting pipes, and the reciprocating pressurization mechanism is used to compress the air inside the test water channel mechanism, thereby causing the water pressure inside the test water channel mechanism to fluctuate back and forth, thus simulating different states.

2. The experimental apparatus for leakage testing of grouting material in new ducts according to claim 1, characterized in that, The test waterway mechanism includes a pipe connector fixed to an I-beam, an upper vertical pipe fixedly connected to the upper part of the pipe connector, a U-shaped pipe fixedly connected to the upper part of the upper vertical pipe, the bottoms of the upper vertical pipe and the U-shaped pipe being connected, and a lower vertical pipe rotatably connected to the lower part of the pipe connector.

3. The experimental apparatus for testing leakage of grouting material in new ducts according to claim 2, characterized in that, The rotary positioning mechanism includes a first motor fixed to the I-beam, the output shaft of the first motor being fixedly connected to a first gear, and a second gear being fixedly connected to the outside of the lower vertical tube. The first gear and the second gear mesh with each other.

4. The experimental apparatus for leakage testing of grouting material in new ducts according to claim 2, characterized in that, The angle deflection mechanism includes a fixed ring fixed to the outside of the lower vertical tube, a telescopic tube fixedly connected to the lower part of the fixed ring, a deflection tube fixedly connected to the end of the telescopic tube away from the lower vertical tube, two symmetrically arranged first position seats fixedly connected to the bottom of the fixed ring, a linear motor rotatably connected to the first position seats, a second position seat rotatably connected to the end of the linear motor away from the first position seats, and a collar fixedly connected to the second position seat, the collar being fixed to the outside of the deflection tube.

5. The new duct grouting material leakage test device according to claim 4, characterized in that, The installation mechanism includes a through pipe located inside the installation housing. The installation housing has a water channel, and the through pipe is connected to a deflection pipe through the water channel. The through pipe is equipped with an on / off valve, which is connected to an installation sleeve. The installation sleeve is threadedly connected to a locking bolt. The inner diameter of the installation sleeve is different on different installation mechanisms. Grouting material is contained inside the grouting pipe.

6. The experimental apparatus for leakage testing of grouting material in new ducts according to claim 2, characterized in that, The pressurization control mechanism includes a hydraulic telescopic rod fixed to a first fixed frame. The end of the hydraulic telescopic rod away from the first fixed frame is fixedly connected to a first sliding sleeve. The first sliding sleeve is sleeved on one end of the U-shaped tube, and the first sliding sleeve and the U-shaped tube are slidably connected. The first sliding sleeve is provided with a first water-air channel and a first pressure gauge. The first water-air channel is provided with an electrically controlled switch valve. The first water-air channel is used to supply water or air to the U-shaped tube.

7. The new duct grouting material leakage test device according to claim 6, characterized in that, The reciprocating pressurizing mechanism includes a motor frame fixed to a second fixed frame, a first motor mounted on the motor frame, an output shaft of the first motor fixedly connected to a rotating shaft, a rotating frame fixedly connected to the rotating shaft, a second motor mounted inside the rotating frame, an output shaft of the second motor fixedly connected to a threaded rod, the threaded rod and the rotating frame rotatably connected, the threaded rod threadedly connected to an adjusting block, the adjusting block and the rotating frame slidably connected, the adjusting block fixedly connected to a swing rod shaft, the swing rod shaft rotatably connected to a swing rod, and the swing rod rotatably connected to a swing rod seat.

8. The new duct grouting material leakage test device according to claim 7, characterized in that, The end control sleeve mechanism includes a lifting rod fixedly connected to the swing rod seat, the lifting rod passing through the second fixed frame, the lifting rod and the second fixed frame being slidably connected, the end of the lifting rod away from the swing rod seat being fixedly connected to the second sliding sleeve, the second sliding sleeve being sleeved on the end of the U-shaped tube away from the first sliding sleeve, the second sliding sleeve and the U-shaped tube being slidably connected, and the second sliding sleeve being provided with a second water and air channel and a second pressure gauge.

9. The experimental apparatus for leakage testing of grouting material in new ducts according to claim 1, characterized in that, The inner side of the mounting shell is equipped with several cameras, and the inner wall of the grouting pipe is equipped with pressure strain gauges and conductive test plates.

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