CN216978998U - Test device for simulating karst cave grouting under flowing water condition - Google Patents
Test device for simulating karst cave grouting under flowing water condition Download PDFInfo
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- CN216978998U CN216978998U CN202123432419.9U CN202123432419U CN216978998U CN 216978998 U CN216978998 U CN 216978998U CN 202123432419 U CN202123432419 U CN 202123432419U CN 216978998 U CN216978998 U CN 216978998U
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Abstract
The utility model discloses a test device for simulating karst cave grouting under a flowing water condition, which comprises a pulping and grouting integrated unit, a grouting cavity unit, a flowing water unit, a waste liquid collecting unit and an information monitoring unit, wherein the pulping and grouting integrated unit is used for preparing grouting slurry, the grouting cavity unit is used for simulating a karst cave environment to be grouted, the flowing water unit is used for injecting water flow into the grouting cavity unit in real time and simulating a water flow scouring environment, the waste liquid collecting unit is used for collecting waste liquid discharged by the grouting cavity unit, and the information monitoring unit is used for collecting real-time experimental data in a simulation process and obtaining a slurry retention rate through analysis and calculation. The utility model can accurately test the water scouring resistance of the slurry at different water flow speeds and observe the diffusion and accumulation conditions of the slurry in the unlimited cavity.
Description
Technical Field
The utility model belongs to the technical field of karst processing construction, and particularly relates to a test device for simulating karst cave grouting under a flowing water condition.
Background
The application of grouting technology is more and more extensive in the aspect of karst treatment. Because the grouting process belongs to hidden engineering, the related stratum conditions are complex and difficult to scientifically guide the grouting design, construction and grouting work effect evaluation, and most of the related stratum conditions depend on manual experience, so that the grouting effect in actual construction is difficult to reach the expected target, and the grouting material is seriously wasted and other adverse phenomena are caused. The simulation grouting test can truly and visually reflect the diffusion condition of the grout, the common simulation grouting test mainly aims at cracks, loose soil layers, pile foundations and the like, the simulation test for grouting in the karst caves is few, the water scouring resistance of the grout under different water flow speeds cannot be tested, and the diffusion accumulation condition of the grout in an unlimited cavity cannot be observed.
SUMMERY OF THE UTILITY MODEL
The utility model mainly solves the technical problem of providing a test device for simulating karst cave grouting under a flowing water condition, which is used for researching the diffusion condition of slurry in the karst cave under the flowing water condition;
in order to solve the technical problems, the utility model provides the following technical scheme:
the utility model provides a test device for simulating karst cave grouting under a flowing water condition,
the test device comprises a pulping and grouting integrated unit, a grouting cavity unit, a water moving unit, a waste liquid collecting unit and an information monitoring unit,
the pulping and grouting integrated unit is used for preparing grouting slurry,
the grouting cavity unit is used for simulating a karst cave environment to be grouted,
the water moving unit is used for injecting water flow into the grouting cavity unit in real time to simulate a water flow scouring environment,
the waste liquid collecting unit is used for collecting the waste liquid discharged by the pulp cavity unit,
the information monitoring unit acquires real-time experimental data of the simulation process, obtains the slurry retention rate through analysis and calculation,
wherein, the pipeline communicated with the pulping and grouting integrated unit is connected with the grouting opening of the grouting cavity unit,
the movable water unit is connected with a movable water inlet of the grouting cavity unit through a pipeline, the waste liquid collecting unit is connected with a water outlet of the grouting cavity unit through a pipeline, and the data collecting device of the information monitoring unit is arranged on the pipeline and used for collecting data information of the pipeline.
Optionally, slurrying slip casting integration unit is including making thick liquid bucket, motor, raw materials mouth, first air compressor machine, the upper end of making thick liquid bucket is provided with the raw materials mouth, the raw materials mouth is used for letting in the raw materials and disposes into the thick liquid, the motor sets up one side of raw materials mouth, the output shaft of motor runs through make thick liquid bucket upper end lateral wall, and extend to in the making thick liquid bucket, be located in the making thick liquid bucket be provided with the pivot on the output shaft of motor, be provided with stirring vane in the pivot, first air compressor machine sets up one side of making thick liquid bucket, first air compressor machine be used for with make thick liquid in the thick liquid bucket carry extremely through out the thick liquid pipeline in the slip casting cavity unit.
Optionally, slip casting cavity unit includes slip casting cavity and support, slip casting cavity bottom is the steel sheet, and trilateral organic glass board that is, the one side is the delivery port in addition, organic glass's surface is provided with the scale mark, connects the water inlet has been arranged to a side bottom of flowing the water unit, the support sets up the upper end of slip casting cavity, the support can be realized fixing on the slurrying slip casting integration unit go out the thick liquid pipeline and remove the effect of play thick liquid pipeline.
Optionally, the power unit includes water storage bucket, second air compressor machine, water injection pipe, moisturizing mouth, the lateral wall of water storage bucket is provided with the outlet pipe, the outlet pipe with the water inlet of moving the water unit is linked together, the upper end of water storage bucket is provided with the moisturizing mouth, the moisturizing mouth is used for letting in the water source extremely in the water storage bucket, the second air compressor machine sets up one side of water storage bucket, the second air compressor machine be used for with water liquid in the water storage bucket passes through the outlet pipe is carried extremely in the slip casting cavity.
Optionally, the waste liquid collecting unit is a waste liquid collecting tank with a graduated scale, the waste liquid collecting tank is located on one side of the water outlet of the grouting cavity, and the upper end of the waste liquid collecting tank is lower than the lower end of the water outlet of the grouting cavity.
Optionally, the bottom of the grouting cavity is reserved with a groove capable of being placed into the organic glass plate, a gasket is added to prevent the organic glass plate from leaking from the joint of the steel plate and the bottom of the grouting cavity, and the water inlet is provided with a plurality of side walls of the grouting cavity.
Optionally, the information monitoring unit includes first manometer, second manometer, first electromagnetic flowmeter, second electromagnetic flowmeter, first manometer sets up on the first air compressor machine, the second manometer sets up respectively the water storage bucket with on the second air compressor machine, first electromagnetic flowmeter sets up go out on the thick liquid pipeline, second electromagnetic flowmeter sets up the water storage bucket lateral wall on the outlet pipe.
The utility model has the beneficial effects
The utility model can accurately test the water erosion resistance of the grout under different water flow speeds and observe the diffusion and accumulation conditions of the grout in an unlimited cavity, can measure the diffusion range of the grout through the scales on the grouting cavity and explore a diffusion model of the grouting grout of the karst cave under the condition of flowing water.
Drawings
FIG. 1 is a schematic diagram of the framework structure of the present invention.
Fig. 2 is a schematic view of the subjective structure of the present invention.
Description of reference numerals: the method comprises the following steps of 1-a pulping barrel, 2-a motor, 3-a raw material port, 4-a first air compressor, 5-a pulp outlet pipeline, 6-a grouting cavity, 7-a steel plate, 8-an organic glass plate, 9-a water storage barrel, 10-a second air compressor, 11-a water outlet pipe, 12-a water replenishing port, 13-a waste liquid collecting tank, 14-a first pressure gauge, 15-a second pressure gauge, 16-a first electromagnetic flowmeter and 17-a second electromagnetic flowmeter.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
As shown in fig. 1-2, the present invention provides a test apparatus for simulating grouting of a cavern under flowing water conditions,
the test device comprises a pulping and grouting integrated unit, a grouting cavity unit, a water moving unit, a waste liquid collecting unit and an information monitoring unit,
slurrying slip casting integration unit for preparing the slip casting slurry, slurrying slip casting integration unit includes pulping barrel 1, motor 2, raw materials mouth 3, first air compressor machine 4, pulping barrel 1's upper end is provided with raw materials mouth 3, raw materials mouth 3 is used for letting in the raw materials and disposes into the thick liquid, motor 2 sets up one side of raw materials mouth 3, the output shaft of motor 2 runs through pulping barrel 1 upper end lateral wall, and extends to in pulping barrel 1, be located in pulping barrel 1 be provided with the pivot on the output shaft of motor 2, be provided with stirring vane in the pivot, first air compressor machine 4 sets up one side of pulping barrel 1, first air compressor machine 4 is used for with the thick liquid in pulping barrel 1 carries to in the slip casting cavity unit through grout outlet pipe 5,
the grouting cavity unit is used for simulating a karst cave environment to be grouted, the grouting cavity unit comprises a grouting cavity 6 and a support, the bottom of the grouting cavity 6 is a steel plate 7, three sides of the grouting cavity are organic glass plates 8, the other side of the grouting cavity is a water outlet, scale marks are arranged on the surface of the organic glass plates 8, a water inlet is arranged at the bottom of one side face of the water moving unit, the support is arranged at the upper end of the grouting cavity 6 and can fix the grout outlet pipeline 5 on the pulping and grouting integrated unit and move the grout outlet pipeline 5, a groove capable of being placed into the organic glass plates 8 is reserved on the steel plate 7 at the bottom of the grouting cavity 6, a gasket is added to prevent the water leakage of the joint of the organic glass plates 8 and the bottom steel plate 7, and the side wall of the grouting cavity 6 is provided with a plurality of water inlets,
the water moving unit is used for injecting water flow into the grouting cavity 6 unit in real time and simulating a water flow scouring environment, the power unit comprises a water storage barrel 9, a second air compressor 10, a water outlet pipe 11 and a water replenishing port 12, the side wall of the water storage barrel 9 is provided with the water outlet pipe 11, the water outlet pipe 11 is communicated with a water inlet of the water moving unit, the upper end of the water storage barrel 9 is provided with the water replenishing port 12, the water replenishing port 12 is used for introducing a water source into the water storage barrel 9, the second air compressor 10 is arranged on one side of the water storage barrel 9, the second air compressor 10 is used for conveying water liquid in the water storage barrel 9 into the grouting cavity 6 through the water outlet pipe 11,
the waste liquid collecting unit is used for collecting waste liquid discharged by the slurry cavity unit, the waste liquid collecting unit is a waste liquid collecting tank 13 with a graduated scale, the graduated scale can directly read the volume of objects in the waste liquid collecting tank 13, the waste liquid collecting tank 13 is positioned on one side of a water outlet of the grouting cavity 6, the upper end of the waste liquid collecting tank 13 is lower than the lower end of the water outlet of the grouting cavity 6,
the information monitoring unit acquires real-time experimental data of the simulation process, obtains the slurry retention rate through analysis and calculation, the information monitoring unit comprises a first pressure gauge 14, a second pressure gauge 15, a first electromagnetic flowmeter 16 and a second electromagnetic flowmeter 17, the first pressure gauge 14 is arranged on the first air compressor 4, the second pressure gauge 15 is respectively arranged on the water storage barrel 9 and the second air compressor 10, the first electromagnetic flow meter 16 is arranged on the slurry outlet pipeline 5, the second electromagnetic flow meter 17 is arranged on the water outlet pipe 11 on the side wall of the water storage barrel 9, the grouting pressure and flow in the grouting process can be monitored in real time through the first pressure gauge 14 and the first electromagnetic flowmeter 16, the pressure and the flow in the water moving unit in the grouting process can be monitored in real time through the second flowmeter and the second pressure gauge 15;
wherein, the pipeline communicated with the pulping and grouting integrated unit is connected with the grouting opening of the grouting cavity 6 unit,
the water moving unit is connected with a water moving inlet of the grouting cavity 6 unit through a pipeline, the waste liquid collecting unit is respectively connected with a water outlet of the grouting cavity 6 unit through a pipeline, data collecting devices of the information monitoring unit are respectively arranged on the pipelines for collecting data information of the pipelines,
the pulping barrel 1 is used for generating and initially moving the pulp, after the pulp is prepared in the pulping barrel 1, a valve of a raw material port 3 is closed, a first air compressor 4 is opened to start pumping the pulp, and the pulp flows into a grouting cavity 6 from the pulping barrel 1 through a pulp outlet pipeline 5;
before the slurry is pumped, a flowing water environment is set, a second air compressor 10 in a flowing water unit is started, water flow in a water storage tank flows into a grouting cavity 6 to form dynamic water flow, then water liquid in the grouting cavity 6 flows into a waste liquid collecting tank 13 to form a stable flowing water condition,
the waste liquid collecting unit is a waste liquid collecting tank 13 with a graduated scale, the waste liquid collecting tank 13 is positioned on one side of a water outlet of the grouting cavity 6, the upper end of the waste liquid collecting tank 13 is lower than the lower end of the water outlet of the grouting cavity 6, and the volume V3 of water and slurry flowing into the waste liquid tank is determined by reading the change of the front and rear scales;
the information monitoring unit comprises a first pressure gauge 14, a second pressure gauge 15, a first electromagnetic flow meter 16 and a second electromagnetic flow meter 17, the first pressure gauge 14 is arranged on the first air compressor 4, the second pressure gauge 15 is respectively arranged on the water storage barrel 9 and the second air compressor 10, the first electromagnetic flow meter 16 is arranged on the slurry outlet pipeline 5, the second electromagnetic flow meter 17 is arranged on the water outlet pipe 11 on the side wall of the water storage barrel 9, the grouting pressure and flow V1 in the grouting process can be monitored in real time through the first pressure gauge 14 and the first electromagnetic flow meter 16, and the pressure and flow V2 in the water-moving system in the grouting process can be monitored in real time through the second flow meter and the second pressure gauge 15;
the test device for simulating karst cave grouting under the condition of flowing water, which is used for the embodiment of the utility model, can be used for testing the retention rate of slurry under the condition of flowing water, and the specific test method comprises the following steps:
the method comprises the following steps: assembling and debugging test device
Firstly, assembling a slurry cavity unit, putting an organic glass plate 8 into a bottom steel plate 7 with a groove, sticking a sealing rubber ring, and assembling a bracket for fixing a slurry outlet pipeline 5; then checking whether a first air compressor 4 in the pulping and grouting integrated unit, a motor 2 in a pulping barrel 1 and a stirring blade work normally, checking whether a second air compressor 10 in the water moving unit works normally and how the water storage tank is closed, checking whether enough space exists in a waste liquid collecting tank 13, checking whether each pressure gauge and each flow meter work normally, and fixing a pulp outlet pipeline 5 through a support;
step two: preparing slurry and forming stable dynamic water flow
Slurry raw materials are added into a pulping storage in the pulping and grouting integrated unit, after the raw materials are added, a pulping storage barrel is closed, a motor 2 is started to start stirring the raw materials to prepare the slurry, and a second air compressor 10 in a flowing water system is started a few minutes before the slurry is uniformly stirred, so that water in a water storage tank flows into a grouting cavity 6 and then flows into a waste liquid collecting tank 13, and a stable flowing water condition is formed.
Step three: grouting simulation
Opening a first air compressor 4 in the pulping and grouting integrated unit, injecting grout into a grouting cavity 6 through a grout outlet pipeline 5, observing a first pressure gauge 14 in the first air compressor 4, wherein the grouting pressure is required to be less than or equal to 0.5MPa, and simultaneously observing the diffusion state of the grout in the grouting cavity 6, after grouting is finished, firstly closing the first air compressor 4 in the pulping and grouting integrated unit, then flushing the grout by water conveyed by a water-moving unit for 10min under the condition of water movement, and then closing a second air compressor 10 in the water-moving unit;
step four: collecting data, calculating the retention rate Q of the slurry
The distribution reading pulping and grouting integrated unit comprises a reading V1 of a first electromagnetic flowmeter 16 in the distribution reading pulping and grouting integrated unit, a reading V2 of a second electromagnetic flowmeter 17 in the water moving unit and a reading V3 in a waste liquid pool in the waste liquid collecting system.
The retention rate eta of the slurry under the water flow scouring is calculated by the following formula:
η＝(V2－V3+V1)/V2×100％
according to the experimental method for testing the retention rate of the grout, the water scouring resistance of the grout under different water flow speeds can be accurately tested, the diffusion accumulation condition of the grout in an unlimited cavity can be observed, the diffusion range of the grout can be measured through the scales on the grouting cavity 6, and a diffusion model of the karst cave grouting grout under the condition of flowing water is explored.
According to the embodiment, the test device for simulating karst cave grouting under the condition of flowing water can be used for accurately testing the water scouring resistance of grout under different water flow speeds and providing data for exploring a diffusion model of the karst cave grouting grout under the condition of flowing water.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.
Claims (7)
1. A test device for simulating karst cave grouting under the condition of flowing water is characterized in that,
the test device comprises a pulping and grouting integrated unit, a grouting cavity unit, a water moving unit, a waste liquid collecting unit and an information monitoring unit,
the pulping and grouting integrated unit is used for preparing grouting slurry,
the grouting cavity unit is used for simulating a karst cave environment to be grouted,
the water moving unit is used for injecting water flow into the grouting cavity unit in real time to simulate a water flow scouring environment,
the waste liquid collecting unit is used for collecting the waste liquid discharged by the pulp cavity unit,
the information monitoring unit acquires real-time experimental data of the simulation process, obtains the slurry retention rate through analysis and calculation,
wherein, the pipeline communicated with the pulping and grouting integrated unit is connected with a grouting opening of the grouting cavity unit,
the movable water unit is connected with a movable water inlet of the grouting cavity unit through a pipeline, the waste liquid collecting unit is connected with a water outlet of the grouting cavity unit through a pipeline, and the data collecting device of the information monitoring unit is arranged on the pipeline and used for collecting data information of the pipeline.
2. The test device for simulating grouting of the karst cave under the condition of running water according to claim 1,
slurrying slip casting integration unit is including making thick liquid bucket, motor, raw materials mouth, first air compressor machine, the upper end of making thick liquid bucket is provided with the raw materials mouth, the raw materials mouth is used for letting in the raw materials and disposes into the thick liquid, the motor sets up one side of raw materials mouth, the output shaft of motor runs through make thick liquid bucket upper end lateral wall, and extend to in the making thick liquid bucket, be located in the making thick liquid bucket be provided with the pivot on the output shaft of motor, be provided with stirring vane in the pivot, first air compressor machine sets up one side of making thick liquid bucket, first air compressor machine be used for with the thick liquid in the making thick liquid bucket is carried extremely through a thick liquid pipeline in the slip casting cavity unit.
3. The test device for simulating grouting of the karst cave under the condition of running water according to claim 2,
slip casting cavity unit includes slip casting cavity and support, slip casting cavity bottom is the steel sheet, and trilateral organic glass board that is, the one side is the delivery port in addition, the surface of organic glass board is provided with the scale mark, connects the water inlet has been arranged to a side bottom of flowing the water unit, the support sets up the upper end of slip casting cavity, the support can be realized fixing on the slurrying slip casting integration unit go out the thick liquid pipeline and remove the effect of play thick liquid pipeline.
4. A test device for simulating grouting in a karst cave under flowing water conditions as claimed in claim 3,
the movable water unit includes water storage bucket, second air compressor machine, water injection pipe, moisturizing mouth, the lateral wall of water storage bucket is provided with the outlet pipe, the outlet pipe with the water inlet of movable water unit is linked together, the upper end of water storage bucket is provided with the moisturizing mouth, the moisturizing mouth is used for letting in the water source extremely in the water storage bucket, the second air compressor machine sets up one side of water storage bucket, the second air compressor machine be used for with water liquid in the water storage bucket passes through the outlet pipe is carried extremely in the slip casting cavity.
5. The test device for simulating grouting of the karst cave under the condition of running water according to claim 4,
the waste liquid collecting unit is a waste liquid collecting tank with a graduated scale, the waste liquid collecting tank is positioned on one side of a water outlet of the grouting cavity, and the upper end of the waste liquid collecting tank is lower than the lower end of the water outlet of the grouting cavity.
6. A test device for simulating grouting of a karst cave under flowing water conditions according to claim 3,
the grouting cavity is characterized in that a groove capable of being placed into the organic glass plate is reserved in the bottom of the grouting cavity on the steel plate, a gasket is added to prevent the organic glass plate from leaking from the bottom of the steel plate joint, and the water inlet is provided with a plurality of side walls of the grouting cavity.
7. The test device for simulating grouting of the karst cave under the condition of running water according to claim 4,
the information monitoring unit comprises a first pressure gauge, a second pressure gauge, a first electromagnetic flow meter and a second electromagnetic flow meter, the first pressure gauge is arranged on the first air compressor, the second pressure gauge is respectively arranged on the water storage barrel and the second air compressor, the first electromagnetic flow meter is arranged on the pulp outlet pipeline, and the second electromagnetic flow meter is arranged on the side wall of the water storage barrel on the water outlet pipe.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114295675A (en) * | 2021-12-31 | 2022-04-08 | 中南大学 | Device and method for evaluating explosion risk of sulfide mineral dust |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114295675A (en) * | 2021-12-31 | 2022-04-08 | 中南大学 | Device and method for evaluating explosion risk of sulfide mineral dust |
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