CN111624327A - Karst pipeline slip casting shutoff test device - Google Patents
Karst pipeline slip casting shutoff test device Download PDFInfo
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- CN111624327A CN111624327A CN202010312375.7A CN202010312375A CN111624327A CN 111624327 A CN111624327 A CN 111624327A CN 202010312375 A CN202010312375 A CN 202010312375A CN 111624327 A CN111624327 A CN 111624327A
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Abstract
The invention relates to a karst pipeline grouting plugging test device which comprises a water tank, wherein the water tank is connected with an experiment pipeline, water in the water tank can enter the experiment pipeline, the water tank is connected with one end of a pressure stabilizing hose, the pressure stabilizing hose is communicated with the inner space of the water tank, the other end of the pressure stabilizing hose is arranged outside the water tank and is connected with a sliding part, the sliding part is connected with the water tank in a sliding manner and can move up and down along the water tank, the water tank is connected with a water supply mechanism, the water supply mechanism is used for injecting water into the water tank, the experiment pipeline is connected with a grouting mechanism, and the grouting mechanism is used for injecting plugging slurry into the experiment pipeline.
Description
Technical Field
The invention relates to the technical field of test equipment, in particular to a karst pipeline grouting plugging test device.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
In the process of constructing underground engineering in a karst area, karst channels are often exposed, and project accidents are easily caused by karst water inrush disasters.
A large amount of engineering practices prove that the grouting technology can obtain a good plugging effect in the plugging process of the karst pipeline flowing water at different flow rates, but the karst pipeline is irregular in development, and the karst pipeline type water burst has strong development of karst cracks, large flow and high flow rate, so that the existing grouting plugging technology is large in blindness and depends on experience, the grouting plugging theory is far lagged behind the engineering practices, and the problems that grouting materials are seriously wasted, the treatment process is repeated, complete plugging cannot be realized at one time and the like are often caused.
The grouting model test method can truly simulate a complex geological structure, realizes various test working conditions, is an important basis for building a grouting plugging mathematic and mechanical model and providing a new flowing water plugging theory. It can be said that the experimental study of the grouting model has become an important means for the theoretical study of grouting.
Related researchers at home and abroad develop a series of karst pipeline water burst grouting plugging model tests, but the inventor finds that the existing model test system mainly has the following problems:
1. the existing model test device can not provide a flowing water environment with stable flow rate, and the flowing water flow rate is unstable, so that the test can not be stably carried out, and the test is easy to generate larger errors.
2. In the process of flowing water grouting, the mutual coupling effect of the grout and the flowing water can be visually observed, but the accurate recording cannot be realized, and a large error exists.
3. In the test process, only simple experimental data such as the change of the flowing water flow can be measured, key data such as a flow velocity field, a pressure field, grouting pressure and the like in the grouting space cannot be acquired,
4. the existing model test grouting device cannot be changed, only can realize the simulation of a single working condition, lacks effective stirring, filtering and anti-blocking measures for certain slurry, cannot effectively observe fault positions and timely eliminate faults, and has poor test repeatability, low utilization rate of the test device and poor test effect.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a karst pipeline grouting plugging test device which can provide a flowing water environment with stable flow rate, so that the test can be stably carried out and the test result is accurate.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, an embodiment of the invention provides a karst pipeline grouting plugging test device, which comprises a water tank, wherein the water tank is connected with an experiment pipeline, water in the water tank can enter the experiment pipeline, the water tank is connected with one end of a pressure stabilizing hose, the pressure stabilizing hose is communicated with an inner space of the water tank, the other end of the pressure stabilizing hose is arranged outside the water tank and is connected with a sliding part, the sliding part is connected with the water tank in a sliding manner and can move up and down along the water tank, the water tank is connected with a water supply mechanism, the water supply mechanism is used for injecting water into the water tank, the experiment pipeline is connected with a grouting mechanism, and the grouting mechanism is used for injecting plugging slurry into the experiment pipeline.
The invention has the beneficial effects that:
according to the test device, one end of the pressure stabilizing hose is communicated with the inner space of the water tank, the other end of the pressure stabilizing hose is arranged outside the water tank and can move up and down along the water tank to form a communicating vessel with the water tank, when the movable end of the pressure stabilizing hose reaches a set height, the continuously injected water in the water tank flows out from the end part of the pressure stabilizing hose, the water level in the water tank cannot continuously rise, and therefore the flowing water with stable pressure and flow rate can be provided for an experimental pipeline, a test can be stably carried out, and the accuracy of an experimental result is guaranteed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a front view of the overall structure of embodiment 1 of the present invention;
FIG. 2 is a plan view of the whole structure of embodiment 1 of the present invention;
FIG. 3 is a side view of the whole structure of embodiment 1 of the present invention;
FIG. 4 is an isometric view of the overall structure of example 1 of the present invention;
FIG. 5 is a front view showing the assembly of a water supply mechanism and a water tank in accordance with embodiment 1 of the present invention;
FIG. 6 is a plan view showing the assembly of the water supply mechanism and the water tank in embodiment 1 of the present invention;
wherein, 1, a water tank, 2, a flow limiting pipe, 3, a baffle, 4, a pressure stabilizing hose, 5, a guide rail, 6, a fixing piece, 6-1, a hose fixing part, 6-2, a first clamping plate, 6-3, a second clamping plate, 6-4, a clamping bolt, 6-5, a clamping nut, 7, a water supply main pipe, 8, a water supply branch pipe, 9, a water supply valve, 10, an experimental pipeline, 11, a flat plate, 12, a supporting leg, 13, a bracket, 13-1, a fixing plate, 13-2, a supporting plate, 14, a water outlet pipe, 15, a rubber hose, 16, an experimental pipe valve, 17, a first pressure sensor, 18, a flow sensor, 19, a conductive gasket, 20, a paperless recorder, 21, a power supply, 22, a resistivity measuring instrument, 23, a high-definition camera, 24, a grouting main pipe, 25, a mixer, 26, a slurry collecting box and 27, a grouting pump, 28. grouting branch pipe, 29 filter screen, 30 filter tip, 31 grouting valve, 32 second pressure sensor, 33 pulp-water collecting box, 34 drain pipe, 35 drain valve.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
For convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate correspondence with up, down, left and right directions of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Just as the introduction of background art, current karst pipeline slip casting shutoff test device can not provide stable flowing water environment, and the experimental result is inaccurate, to above-mentioned problem, this application provides a karst pipeline slip casting shutoff test device.
In a typical embodiment example 1 of this application, as shown in fig. 1-6, a karst pipeline slip casting shutoff test device, including water tank, water supply mechanism, experiment pipeline and slip casting mechanism, water supply mechanism is connected with the water tank, can be to the water tank in the injected water, water tank and experiment pipe connection, the water in the water tank can flow into the experiment pipeline, slip casting mechanism and experiment pipe connection can be to the injected slurry in the experiment pipeline, carry out the slip casting shutoff.
The water tank 1 is of a cylindrical structure, is made of organic glass and can bear the water pressure of 0.1MPa, and the water tank is placed on the water tank frame and is supported by the water tank frame.
In other embodiments, the water tank may have a rectangular parallelepiped structure or a square structure.
The bottom tank wall of water tank is provided with the water inlet, the water inlet is connected with water supply mechanism, and water supply mechanism can inject water into the water tank through the water inlet.
The inside water inlet department of water tank is provided with current-limiting pipe 2, the upper surface at water tank bottom tank wall is fixed to the current-limiting pipe, and the internal diameter of current-limiting pipe is greater than the diameter of water inlet, and the water that water supply mechanism provided can get into the current-limiting pipe through the water inlet, the current-limiting pipe adopts the organic glass pipe, the top of current-limiting pipe is provided with baffle 3, the area of baffle is less than the cross-sectional area of current-limiting pipe, has the clearance between baffle and the current-limiting pipe, and water in the current-limiting pipe can pass through.
The flow limiting pipe and the baffle plate are adopted, so that the condition that the water level in the water tank is unstable due to overlarge water impact of water supply of the water supply mechanism on the water inside the water tank can be effectively prevented.
The inner space of the water tank is also communicated with the bottom end of the pressure stabilizing hose 4, the pressure stabilizing hose extends out of the water tank, and the top end of the pressure stabilizing hose is connected with the outer peripheral surface of the tank wall of the water tank in a sliding manner. In this embodiment, the pressure stabilizing hose is a PVC transparent steel wire spiral reinforced hose.
Specifically, a guide rail 5 is fixed on the peripheral surface of the water tank, the guide rail is of a cylindrical structure or a cuboid structure and the like, the guide rail is connected with a fixing piece 6 in a sliding way, the fixing piece comprises a hose fixing part 6-1 and a clamping part which are integrated, the hose fixing part is fixedly connected with the top end of the pressure stabilizing hose, the clamping part comprises a first clamping plate 6-2 and a second clamping plate 6-3, the clamping part is made of plastic or rubber materials with set flexibility, the first clamping plate and the second clamping plate are arranged on two sides of the guide rail, and a clamping bolt 6-4 penetrates through the first clamping plate and the second clamping plate, a clamping nut 6-5 is connected to the clamping bolt in a threaded mode, and the clamping nut is rotated to clamp or loosen the guide rail through the first clamping plate and the second clamping plate so as to lock and loosen the top end of the pressure stabilizing hose and the guide rail.
The water tank forms the linker with steady voltage hose, goes up and down to the top of steady voltage hose, makes it reach the experiment and sets for the height, and when the water level in the water tank reachd the experiment and sets for the height, if continue to pour into water into in the water tank, according to the linker principle, water can flow through steady voltage hose top, and the water level in the water tank can not change, and then has realized providing the flowing water of steady pressure, steady velocity of flow to the experiment pipeline. And through the lifting motion of steady voltage hose top, pressure and velocity of flow value can dynamic adjustment, make it more to be close to real environment.
The water supply mechanism includes water supply main 7, water supply main is linked together through the inner space of water inlet and water tank, water supply main and a plurality of water supply branch pipe 8 intercommunication, a plurality of water supply branch pipe distribute from top to bottom, all are provided with feed valve 9 on every water supply branch pipe, feed valve is used for controlling switching on and closing of water supply branch pipe, water supply branch pipe is connected with outside water source, and outside water source can send water into the water tank through water supply branch pipe, water supply main.
In other embodiments, the water supply valve may also be arranged horizontally or in other manners, and in this embodiment, the water supply valve is distributed vertically, so as to facilitate the operation of experimenters.
The water supply branch pipe is provided with a plurality of branch pipes, so that water can be supplied to the water tank from multiple water sources, and the water supply source of the water tank is ensured to be sufficient.
The below of experiment pipeline is provided with the supporting platform who is made by organic glass, supporting platform includes a plurality of platform portions, and every platform portion corresponds a pipeline section. The utility model discloses a karst pipeline simulation platform, including platform portion, landing leg, the landing leg is including dull and stereotyped 11 and the landing leg 12 of fixing in dull and stereotyped bottom surface, and the landing leg supports the flat board, the flat board is fixed with bracket 13 through bolt detachable, the bracket includes perpendicular fixed plate 13-1 and layer board 13-2 that sets up, the layer board be provided with experiment pipeline assorted arc wall, the layer board passes through the arc wall and contacts with experiment pipeline, supports experiment pipeline, the fixed plate passes through the bolt and can dismantle with platform portion and be connected, and is provided with the packing ring between fixed plate and the platform portion, through the quantity of adjusting the packing ring, can adjust the height of fixed plate, and then adjusts the height of layer board to adjust the horizontal angle of experiment pipeline.
The testing device of this embodiment, through the setting of bracket and a plurality of pipeline sections, karst pipeline's diameter, curved state, inclination, pipe wall roughness, deposit isoparametric in the pipeline modify and change to can be close to true engineering state, obtain more real experimental data, change the current situation that current model test system only adopted horizontal straight tube simulation karst pipeline.
Be provided with the delivery port on the outer peripheral face of water tank, delivery port department is provided with outlet pipe 14, the outlet pipe has rubber hose 15 through the ring flange connection, rubber hose tip and experiment pipe connection.
The tip of keeping away from the water tank of experiment pipeline is provided with experiment pipe valve 16, and experiment pipe valve adopts ball valve or butterfly valve or other types of valve, as long as can control switching on and closing of experiment pipeline can, adopt experiment pipe valve for the discharge of control experiment pipeline internal water.
The first experiment pipe valve is used for controlling water in the water tank to flow into the experiment pipeline, and the second experiment pipe valve is used for controlling water in the experiment pipeline to be discharged.
A plurality of first pressure sensors 17, a flow sensor 18 and a conductive gasket 19 are installed in the experiment pipeline, and the plurality of first pressure sensors, the flow sensor and the conductive gasket are arranged along the axial direction of the experiment pipeline. Through a plurality of first pressure sensors and electromagnetic flow sensor, along journey pressure head loss in the pipeline, the flow change condition in each region can be monitored.
The flow sensor adopts an electromagnetic flow sensor, the first pressure sensor and the electromagnetic flow sensor adopt a 16-bit high-precision acquisition card and adopt a USB communication mode, the first pressure sensor and the electromagnetic flow sensor are connected with a paperless recorder 20, the paperless recorder is connected with an upper computer through a data line, the paperless recorder is provided with 30 channels to meet the simultaneous acquisition requirement of a plurality of data, the first pressure sensor and the electromagnetic flow sensor can monitor the pressure and the flow velocity information of the flowing water in the experimental pipeline and transmit the information to the paperless recorder, the paperless recorder can directly draw data curves such as a pressure-time change curve, a flow-time change curve and the like, can output the data in a form of a table and is convenient for data collection, and the first pressure sensor, the electromagnetic flow sensor and the paperless recorder are connected with a power supply 21, powered by a power supply.
The conductive gasket is connected with a resistivity measuring instrument 22, the resistivity measuring instrument is directly connected with an upper computer through a data line, data curves of resistivity-time change and the like can be directly drawn, the data curves can be output in a form of a table and a graph, data collection is facilitated, and the resistance measuring instrument is powered by a power supply.
The resistivity measuring instrument is connected to accurately monitor the change condition of the fluid resistivity in the pipeline, and the data measured by the water pressure sensor and the electromagnetic flowmeter are synthesized to carry out analysis and correction, so that more accurate data are finally obtained to describe the slurry-water coupling state in the karst pipeline, and a basis is provided for a slurry-water coupling theory.
One side of whole test device still is provided with high definition digtal camera 23, high definition digtal camera can set up one, also can set up a plurality ofly, and a plurality of high definition digtal cameras set up in corresponding node position department according to actual need. The high-definition camera can carry out whole-course tracking camera shooting on the whole testing device and the testing process.
The experimental pipeline adopts transparent organic glass pipe, and cooperation high definition digtal camera, resistivity measurement appearance, pressure sensor, electromagnetic flowmeter and paperless record appearance can accurate record slip casting shutoff in-process thick liquid and move the coupling condition of water and the thick liquid diffusion state of shutoff in-process, have solved the "black box problem" of slip casting in-process to a great extent.
Slip casting mechanism includes two slip casting subassemblies, the slip casting subassembly is connected with slip casting house steward 24, the slip casting house steward is connected with the experiment pipeline through the slip casting mouth that sets up on the experiment pipeline, and the slip casting subassembly can carry out the shutoff through slip casting house steward and slip casting mouth with the thick liquid injection experiment pipeline in, to moving water.
In this embodiment, two grouting assemblies are provided to realize two-fluid grouting, and it is understood that in other embodiments, three or four or more grouting assemblies may be provided to realize multi-fluid grouting.
Slip casting subassembly includes mixer 25, the mixer is used for stirring thick liquid, prevents that the thick liquid from segregating, depositing, the discharge gate and the thick liquid of mixer are collected the box 26 and are connected, the thick liquid is collected the box and is set up in the mixer below, and the thick liquid that the mixer stirred can flow out and get into the thick liquid through the discharge gate and collect the box.
The box is collected to the thick liquid passes through the thick liquid pipeline and is connected with grouting pump 27, and grouting pump and mixer are installed on the support body, and the grouting pump of two slip casting subassemblies adopts the grouting pump of the same specification to realize two liquid simultaneous grouting requirements such as cement-water glass. The grouting pump can realize fixed-flow grouting, so that double-liquid grouting proportion is controlled by adjusting the flow of the two grouting pumps, and double-liquid grouting with different grouting proportions is realized. The grouting mechanism of this embodiment can ditch and carry out the simulation of the karst pipeline shutoff test of different slip casting velocity of flow, different slip casting volume, different biliquid proportion, can optimize the slip casting parameter in the actual engineering.
The discharge gate and the slip casting branch pipe 28 of grouting pump are connected, and the slip casting branch pipe of two slip casting subassemblies passes through the tee bend and is connected with the slip casting house steward.
The grouting branch pipes and the grouting main pipe are both made of PVC transparent steel wire spiral reinforced hoses, so that the flowing condition of slurry can be directly observed while no deformation is guaranteed, the blocking and backflow conditions can be found at the first time, and measures can be taken.
The thick liquid inlet department that the box was collected to the thick liquid is provided with filter screen 29, thick liquid pipeline one end is connected with the grouting pump, and the other end stretches into in the thick liquid collects the box to be connected with conical filter tip 30, the less tip of filter paper area is connected with the grouting pump, adopts filter screen and filter tip, can prevent effectively that great particulate matter from blockking up grouting pump and corresponding grouting pipeline, reduces testing device's fault rate.
The grouting branch pipe is provided with a grouting valve 31 and a second pressure sensor 32, the grouting valve is used for controlling the conduction and the closing of the grouting branch pipe, the second pressure sensor is used for detecting grouting pressure information, and the second pressure sensor is connected with the paperless recorder and can transmit the grouting pressure information obtained through detection to the paperless recorder.
The stirring machine, the grouting pump and the second pressure sensor are all connected with a power supply, and the power supply supplies power to the stirring machine, the grouting pump and the second pressure sensor.
One end of the experimental pipeline is connected with the water tank, a slurry-water collecting box 33 is arranged below the other end of the experimental pipeline, the slurry-water collecting box is made of transparent organic glass and has the capacity of three cubic meters, and the slurry-water collecting box is positioned below the water outlet end of the experimental pipeline and can be used for recovering slurry. The slurry-water collection tank is connected to a drain pipe 34, on which a drain valve 35 is provided for draining the liquid in the slurry-water collection tank.
Before the testing device of this embodiment works, need carry out prefabrication to the experiment pipeline.
Specifically, after karst pipeline type water burst disasters happen to tunnels and underground works, the development state of the karst pipeline is determined through geophysical prospecting and a drilling mode in combination with related geological data, so that the average diameter, the bending state, the inclination angle, the pipeline roughness and other parameters of the karst pipeline are determined preliminarily, and the parameters are reduced according to a certain similar proportion according to determined basic parameters to manufacture the experimental pipeline.
After the pipeline is manufactured, the pipeline is placed on a supporting platform, one end of the pipeline is connected with a water outlet pipe of a water tank through a rubber hose, a water supply valve is opened, the height of the top end of a pressure stabilizing hose is adjusted, thereby forming the dynamic water adjustment with stable flow velocity, selecting and determining parameters such as different grouting pressures, grouting flow, grouting materials, double-liquid proportion and the like, then opening a paperless recorder, debugging each water pressure sensor and each flow sensor, opening a high-definition camera for image acquisition, opening a grouting pump and a grouting valve, starting a grouting plugging test, measuring data of each sensor in real time by the paperless recorder in the grouting process, drawing data curves of pressure, flow and the like, measuring the volume of the grout in the grout-water collecting box after the grout completely plugs the test pipeline, and calculating the slurry retention rate according to the actual grouting amount, completing the experiment, and providing accurate basis for grouting plugging scheme design and grouting parameter determination in the actual engineering according to the test result.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. The utility model provides a karst pipeline slip casting shutoff test device, a serial communication port, includes the water tank, water tank and experiment pipe connection, the water in the water tank can get into the experiment pipeline, the water tank is connected with the one end of steady voltage hose, steady voltage hose and water tank inner space intercommunication, steady voltage hose's the other end setting outside the water tank and be connected with the slider, slider and water tank sliding connection can be along the water tank and be elevating movement, the water tank is connected with water supply mechanism, and water supply mechanism is used for pouring into water into the water tank, the experiment pipeline is connected with slip casting mechanism, and slip casting mechanism is used for pouring into the thick liquid for the shutoff into the experiment pipeline.
2. The karst pipeline grouting plugging test device as claimed in claim 1, wherein a water inlet is formed in the bottom wall of the water tank, a flow limiting pipe is fixed on the upper surface of the bottom wall at the water inlet, a baffle is arranged at the top of the flow limiting pipe, and the area of the baffle is smaller than that of the end part of the flow limiting pipe.
3. The karst pipeline grouting plugging test device as claimed in claim 1, wherein the water supply mechanism comprises a water supply main pipe, the water supply main pipe is communicated with the inner space of the water tank, the water supply main pipe is connected with a plurality of water supply branch pipes which are arranged up and down, and the water supply branch pipes are provided with water supply valves.
4. The karst pipeline slip casting shutoff test device of claim 1, characterized in that, the lateral surface of water tank is fixed with the guide rail of vertical setting, guide rail and mounting sliding connection, the tip fixed connection of mounting and steady voltage hose, the mounting still is connected with the retaining member, and the retaining member is used for locking the mounting and is fixed with the guide rail.
5. The karst pipeline grouting plugging test device as claimed in claim 1, wherein the experimental pipeline is a transparent organic glass pipe, one end of the experimental pipeline is connected with the water tank, an experimental pipe valve is arranged on the experimental pipeline, a plurality of first pressure sensors, flow sensors and conductive gaskets are mounted on the experimental pipeline, the first pressure sensors and the flow sensors are connected with a paperless recorder, and the conductive gaskets are connected with a resistivity measuring instrument.
6. The karst pipeline grouting plugging test device as claimed in claim 1, wherein a supporting platform is arranged below the experimental pipeline, a plurality of height-adjustable brackets are arranged on the supporting platform, the brackets are in contact with the experimental pipeline and used for supporting the experimental pipeline and adjusting the angle of the experimental pipeline, and the experimental pipeline is connected with the water tank through a connecting hose so as to be convenient for adjusting the angle of the experimental pipeline.
7. The karst pipeline grouting plugging test device of claim 1, wherein the grouting mechanism comprises a plurality of grouting assemblies, the grouting assemblies are connected with a grouting main pipe, the grouting main pipe is connected with an experimental pipeline, the grouting assemblies comprise a stirrer, a discharge port of the stirrer is connected with a grout collecting box, the grout collecting box is connected with a grouting pump through a grout pipeline, a discharge port of the grouting pump is connected with a grouting branch pipe, and the grouting branch pipe is connected with the grouting main pipe.
8. The karst pipeline grouting plugging test device as claimed in claim 7, wherein a filter screen is arranged at the grout inlet of the grout collecting box, one end of the grout pipeline is connected with the grouting pump, the other end of the grout pipeline extends into the grout collecting box, and a filter tip is connected with the grout pipeline.
9. The grouting plugging test device for the karst pipeline according to claim 7, wherein a grouting valve and a second pressure sensor are installed on the grouting branch pipe.
10. The karst pipeline grouting plugging test device as claimed in claim 1, wherein the test pipeline comprises a plurality of pipeline sections, and adjacent pipeline sections are detachably and fixedly connected through flanges.
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| CN202010312375.7A CN111624327B (en) | 2020-04-20 | 2020-04-20 | Karst pipeline slip casting shutoff test device |
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| CN202010312375.7A CN111624327B (en) | 2020-04-20 | 2020-04-20 | Karst pipeline slip casting shutoff test device |
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| CN112986064A (en) * | 2021-02-04 | 2021-06-18 | 山东大学 | Simulation karst pipeline network blocks up experimental apparatus that gushes water |
| CN116087434A (en) * | 2023-03-13 | 2023-05-09 | 中国石油天然气集团有限公司 | Testing device and testing method |
| CN116242764A (en) * | 2023-03-17 | 2023-06-09 | 中国建筑一局(集团)有限公司 | Grouting material leakage experiment method |
| CN118032608A (en) * | 2023-12-11 | 2024-05-14 | 山东大学 | Visual water moving pipeline grouting simulation test device and method considering temperature |
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