Soil seepage deformation and seepage clogging simulation test device

Abstract

The utility model discloses a soil seepage deformation and seepage clogging simulation test device, which comprises a seepage deformation test cylinder, a seepage clogging test cylinder, a pressurized water supply system and a monitoring sensing assembly, and is characterized in that the seepage deformation test cylinder and the seepage clogging test cylinder are longitudinally arranged; the monitoring sensing assemblies are arranged on the side portions of the seepage deformation test cylinder and the seepage clogging test cylinder respectively, continuous adjustable water pressure is provided through the large-capacity water tank and the pressurization system, clogging sample feeding is completed under the condition of continuous water supply, and the continuous process of the seepage clogging test is achieved. A multi-section seepage pressure real-time monitoring system and a particle recovery system which are combined with a pore water pressure sensor and a soil pressure sensor are matched, so that the mutual relation among the particle size of the clogging, the pore water pressure and the seepage flow can be intuitively reflected; the device has practical significance in production and manufacturing of coarse-grained soil seepage clogging and seepage deformation experimental devices.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of soil permeation and blocking simulation test, concretely to a soil permeation deformation and blocking simulation test device. BACKGROUND

[0002] Permeation deformation refers to that under the action of a certain hydraulic gradient seepage, fine particles in soil flow with water through soil pores, causing the gradual expansion of soil pores or the formation of connected channels, and thus causing the deformation and damage of soil. Permeation blocking refers to that fine soil particles flow with water into the pores of soil with high permeability, blocking part of the pores of soil, and reducing the permeability of soil. At present, the dam building technology of high earth-rock dam has developed rapidly in China in recent years, and with the development of high earth-rock dam technology, dam safety has become a focus problem in the industry. Permeation deformation of dam body is an important influencing factor for the safety of dam body structure. Coarse-grained soil permeation deformation test is an important test in the dam building technology of high earth-rock dam, and provides direct parameters for dam safety evaluation. However, the existing coarse-grained soil vertical permeation deformation instrument mostly uses the lifting water tank method to change the water head, and cannot provide a large pressure head difference. In addition, due to the limitation of water head, the vertical permeation deformation instrument cannot simulate the pressure of high earth-rock dam, affecting the simulation scale range of the experiment, and reliable experimental parameters cannot be obtained. Therefore, the technical personnel in the field propose a coarse-grained soil vertical soil permeation deformation and blocking simulation test device with a large water pressure to solve and improve the above problems. SUMMARY

[0003] This section aims to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the utility model name to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] Therefore, the purpose of the utility model is to provide a soil permeation deformation and blocking simulation test device to solve the problem of the existing coarse-grained soil vertical permeation deformation instrument which mostly uses the lifting water tank method to change the water head, and cannot provide a large pressure head difference. In addition, due to the limitation of water head, the vertical permeation deformation instrument cannot simulate the pressure of high earth-rock dam, affecting the simulation scale range of the experiment, and reliable experimental parameters cannot be obtained.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of soil's penetration deformation and penetration jamming simulation test device, it includes by penetration deformation test cylinder, penetration jamming test cylinder, pressurized water supply system and monitoring sensor component several parts, it is characterized in that, penetration deformation test cylinder and penetration jamming test cylinder are longitudinally arranged, the monitoring sensor component is respectively arranged in the side of penetration deformation test cylinder and penetration jamming test cylinder, the pressurized water supply system is respectively connected with penetration deformation test cylinder and penetration jamming test cylinder and communicates;

[0006] Penetration deformation test cylinder bottom has water inlet one, pressurized water supply system provides continuous adjustable water and water pressure to penetration deformation test cylinder by water inlet one;

[0007] Penetration jamming test cylinder main body section is composed of soil sample cylinder and the feeding cylinder located at the upper end of soil sample cylinder and vertically communicated with soil sample cylinder, the feeding cylinder top has water inlet two and feeding port respectively, pressurized water supply system provides continuous adjustable water and water pressure to penetration jamming test cylinder by water inlet two.

[0008] Among them, the soil's penetration deformation and penetration jamming simulation test device further includes a data analysis controller.

[0009] As a preferred scheme of the soil's penetration deformation and penetration jamming simulation test device, the pressurized water supply system includes a water tank, a pressurized pump group connected to the water tank through a pipeline, a first water inlet pipe connected to the output end of the pressurized pump group at one end and connected to the water inlet one at the other end, and a second water inlet pipe connected to the output end of the pressurized pump group at one end and connected to the water inlet two at the other end.

[0010] Among them, the water inlet one is equipped with a solenoid valve one, and the water inlet two is equipped with a solenoid valve two.

[0011] As a preferred scheme of the soil's penetration deformation and penetration jamming simulation test device, the monitoring sensor component at least includes a pore water pressure sensor and a soil pressure sensor.

[0012] As a preferred scheme of the soil's penetration deformation and penetration jamming simulation test device, the inside bottom of the penetration deformation test cylinder is placed with a honeycomb water permeable layer, and soil particles are located on the upper part of the honeycomb water permeable layer.

[0013] As a preferred scheme of the soil's penetration deformation and penetration jamming simulation test device, the penetration deformation test cylinder is equipped with a soil particle recovery tank one on one side, and a discharge pipe one is connected to the upper part of the penetration deformation test cylinder on one side and connected to the soil particle recovery tank one at the other end.

[0014] As a preferred scheme of the soil permeation deformation and permeation blocking simulation test device, the feeding slow table is further arranged on the inner bottom of the feeding cylinder.

[0015] The feeding slow table comprises a supporting frame fixed to the inner side of the feeding cylinder and a grid net disc arranged on the inner side of the supporting frame and penetrating through the supporting frame.

[0016] As a preferred scheme of the soil permeation deformation and permeation blocking simulation test device, the soil sample cylinder lower end is provided with a soil particle recovery box two, and the soil sample cylinder bottom has a discharge pipe two connected to the soil particle recovery box two.

[0017] Compared with the prior art, the soil permeation deformation and permeation blocking simulation test device has the beneficial effects that: the test system integrated by the permeation deformation test cylinder, the permeation blocking test cylinder, the pressurized water supply system and the monitoring sensor assembly is used to provide continuous adjustable water pressure by using the large-capacity water tank and the pressurized system, and the blocking test sample is put in under the condition of continuous water supply, so that the continuous process of the permeation blocking test is realized; in combination with the multi-section seepage pressure real-time monitoring system of the pore water pressure sensor and the soil pressure sensor and the particle recovery system, the mutual relationship among the blocking particle size, the pore water pressure and the seepage flow can be intuitively reflected, which has practical significance for the production and manufacture of the coarse-grained soil permeation blocking and permeation deformation experimental device, solves the problem that the experimental water pressure is small due to the change of the water pressure of the traditional lifting water tank, expands the particle size range of the experimental soil sample, and can accurately and finely simulate the permeation blocking and permeation deformation process. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a whole layout structure schematic diagram of the test device of the utility model;

[0019] Fig. 2 It is an internal structure schematic diagram of the permeation blocking test cylinder of the utility model;

[0020] Fig. 3 It is an internal structure schematic diagram of the permeation deformation test cylinder of the utility model.

[0021] In the figure: 100, permeation deformation test cylinder; 110, water inlet one; 110, electromagnetic valve one; 120, honeycomb water permeable layer; 130, soil particle recovery box one; 140, discharge conduit one; 200, permeation clogging test cylinder; 210, soil sample cylinder; 220, feeding cylinder; 230, water inlet two; 231, electromagnetic valve two; 240, feeding buffer; 241, support frame; 242, grid net disc; 250, soil particle recovery box two; 260, discharge conduit two; 270, feeding port; 300, pressurized water supply system; 310, water tank; 320, pressurized pump set; 330, first water inlet pipe; 340, second water inlet pipe; 400, monitoring sensor assembly. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below in combination with the drawings.

[0023] Secondly, the utility model is described in detail in combination with the schematic diagram, and in the detailed description of the utility model embodiments, for the convenience of description, the sectional view of the device structure will be partially enlarged without the general proportion, and the schematic diagram is only an example, which should not limit the scope of the utility model protection here. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in the actual manufacture.

[0024] In order to make the purpose, technical scheme and advantages of the utility model more clear, the embodiments of the utility model will be described in further detail below in combination with the drawings.

[0025] Figs. 1-3 The whole structure schematic diagram of the soil permeation deformation and permeation clogging simulation test device of the utility model is shown, please refer to Figs. 1-3The soil permeation deformation and permeation blocking simulation test device of the embodiment comprises a permeation deformation test cylinder 100, a permeation blocking test cylinder 200, a pressurized water supply system 300 and a monitoring sensor assembly 400, wherein the permeation deformation test cylinder 100 and the permeation blocking test cylinder 200 are longitudinally arranged, the monitoring sensor assembly 400 is arranged on the side of the permeation deformation test cylinder 100 and the permeation blocking test cylinder 200, and the pressurized water supply system 300 is connected to the permeation deformation test cylinder 100 and the permeation blocking test cylinder 200; the permeation deformation test cylinder 100 is provided with a water inlet one 110 at the bottom, and the pressurized water supply system 300 provides continuous adjustable water and water pressure into the permeation deformation test cylinder 100 through the water inlet one 110; the main body of the permeation blocking test cylinder 200 is composed of a soil sample cylinder 210 and a feeding cylinder 220 which is vertically connected to the upper end of the soil sample cylinder 210, and the feeding cylinder 220 is provided with a water inlet two 230 and a feeding port 270 at the top, and the pressurized water supply system 300 provides continuous adjustable water and water pressure into the permeation blocking test cylinder 200 through the water inlet two 230. The soil permeation deformation and permeation blocking simulation test device further comprises a data analysis controller.

[0026] The pressurized water supply system 300 comprises a water tank 310, a pressurized pump group 320 connected to the water tank 310 through a pipeline, a first water inlet pipe 330 connected to the output end of the pressurized pump group 320 and the water inlet one 110, and a second water inlet pipe 340 connected to the output end of the pressurized pump group 320 and the water inlet two 230; wherein the water inlet one 110 is provided with an electromagnetic valve one 111, and the water inlet two 230 is provided with an electromagnetic valve two 231. It can be understood that the electromagnetic valve one 111 herein includes but is not limited to a flow valve, a stop valve, etc., or is used in combination with a combination valve, for example, the electromagnetic flow valve can be used to monitor the unit water flow rate of the input water inlet one 110 or the water inlet two 230 in real time. The monitoring sensor assembly 400 at least comprises a pore water pressure sensor and a soil pressure sensor. It can be understood that the pore water pressure sensor is a sensor for measuring the pore water pressure in soil or rock, mainly used for monitoring parameters such as underground water level, soil moisture content and soil permeability coefficient; and the soil pressure sensor is used for measuring the internal pressure stress of soil, and by measuring the pressure of soil on the structure, the stability and safety of the structure are evaluated; in addition, the number and position of the pore water pressure sensor and the soil pressure sensor are not limited, and can be set according to the needs.

[0027] The bottom of the inside of the permeation deformation test cylinder 100 is provided with a honeycomb water-permeable layer 120, and soil particles are located on the upper part of the honeycomb water-permeable layer 120. It can be understood that the honeycomb water-permeable layer 120 is arranged to enable the water injected from below to seep into the soil in the test cylinder in a dispersed state, thereby ensuring and improving the accuracy of the test data. The permeation deformation test cylinder 100 is provided with a soil particle recovery tank 130 on one side, and a drainage pipe 140 is connected to the soil particle recovery tank 130 on the upper part of one side of the permeation deformation test cylinder 100. During the test, when the water level in the test cylinder exceeds the maximum bearing limit, the excess water and soil particles will flow into the soil particle recovery tank 130 through the drainage pipe 140. Of course, one or more drainage pipes 140 can be arranged according to actual needs, and this is not limited. The inside bottom of the feeding cylinder 220 is further provided with a feeding buffer 240; the feeding buffer 240 includes a support frame 241 fixed to the inside of the feeding cylinder 220, and a grid net disc 242 arranged inside the support frame 241 and penetrating up and down. It can be understood that the feeding buffer 240 can be arranged to disperse and spread the water and fine soil particles seeping from above, so that the mud-water mixture can fall into the soil sample cylinder 210 in the most uniform state, thereby ensuring and improving the rationality and accuracy of the test data. The soil sample cylinder 210 is provided with a soil particle recovery tank 250 at the lower end, and the bottom of the soil sample cylinder 210 is provided with a drainage pipe 260 connected to the soil particle recovery tank 250. The soil and water in the soil sample cylinder 210 that are washed and settled can be collected through the soil particle recovery tank 250. In summary, in the present embodiment, a set of test systems integrated by the permeation deformation test cylinder 100, the permeation clogging test cylinder 200, the pressurized water supply system 300 and the monitoring sensor assembly 400 are used to provide continuous adjustable water pressure by using a large-capacity water tank and a pressurized system, and the clogging test sample is put in under the condition of continuous water supply, thereby realizing the continuous process of the permeation clogging test. In combination with the multi-section seepage pressure real-time monitoring system of the pore water pressure sensor and the soil pressure sensor, and the particle recovery system, the mutual relationship between the clogging particle size, the pore water pressure and the seepage flow can be intuitively reflected, which has practical significance in the production of the coarse-grained soil permeation clogging and permeation deformation experimental device. Not only does it solve the problem of small experimental water pressure caused by the traditional lifting of the water tank to change the water pressure, but also expands the particle size range of the experimental soil sample, and can accurately simulate the permeation clogging and permeation deformation process.

[0028] Although the utility model has been described above with reference to the embodiments, various modifications can be made thereto, and equivalent replacements can be made to the components thereof, without departing from the scope of the utility model. In particular, as long as there is no structural conflict, each feature in the embodiments disclosed by the utility model can be combined with each other in any manner, and the combinations are not exhaustively described in the specification merely for the purpose of omitting the length and saving the resources. Therefore, the utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A soil permeability deformation and permeability clogging simulation test device, comprising a permeability deformation test cylinder (100), a permeability clogging test cylinder (200), a pressurized water supply system (300), and a monitoring and sensing component (400), characterized in that, The permeation deformation test cylinder (100) and the permeation clogging test cylinder (200) are longitudinally arranged, the monitoring sensor assembly (400) is arranged on the side of the permeation deformation test cylinder (100) and the permeation clogging test cylinder (200) respectively, and the pressurized water supply system (300) is communicated with the permeation deformation test cylinder (100) and the permeation clogging test cylinder (200) respectively; The permeation deformation test cylinder (100) is provided with a water inlet one (110) at the bottom, and the pressurized water supply system (300) provides continuous adjustable water and water pressure into the permeation deformation test cylinder (100) through the water inlet one (110); The main body section of the permeation clogging test cylinder (200) is composed of a soil sample cylinder (210) and a feeding cylinder (220) arranged at the upper end of the soil sample cylinder (210) and vertically communicated with the soil sample cylinder (210), the feeding cylinder (220) is provided with a water inlet two (230) and a feeding port (270) at the top respectively, and the pressurized water supply system (300) provides continuous adjustable water and water pressure into the permeation clogging test cylinder (200) through the water inlet two (230), The permeation deformation and permeation clogging simulation test device for the soil further comprises a data analysis controller.

2. The device for simulating the permeation deformation and the permeation clogging of soil according to claim 1, characterized in that: The pressurized water supply system (300) comprises a water tank (310), a pressurized pump group (320) communicated with the water tank (310) through a pipeline, a first water inlet pipe (330) with one end communicated with the output end of the pressurized pump group (320) and the other end communicated with the water inlet one (110), and a second water inlet pipe (340) with one end communicated with the output end of the pressurized pump group (320) and the other end communicated with the water inlet two (230). The water inlet one (110) is provided with an electromagnetic valve one (111), and the water inlet two (230) is provided with an electromagnetic valve two (231).

3. The device for simulating the permeation deformation and the permeation clogging of soil according to claim 1, characterized in that: The monitoring sensor assembly (400) at least comprises a pore water pressure sensor and a soil pressure sensor.

4. The device for simulating the permeation deformation and the permeation clogging of soil according to claim 1, characterized in that: The inside bottom of the permeation deformation test cylinder (100) is provided with a honeycomb water-permeable layer (120), and soil particles are arranged on the upper part of the honeycomb water-permeable layer (120).

5. The device for simulating the permeation deformation and the permeation clogging of soil according to claim 1, characterized in that: The permeation deformation test cylinder (100) is provided with a soil particle recovery tank one (130) on one side, and a discharge pipe one (140) is communicated with the upper part of the one side of the permeation deformation test cylinder (100) and the other end of the discharge pipe one (140) is communicated with the soil particle recovery tank one (130).

6. The device for simulating the permeation deformation and the permeation clogging of soil according to claim 1, characterized in that: The inside bottom of the feeding cylinder (220) is further provided with a feeding buffer platform (240). The feeding buffer platform (240) comprises a support frame (241) fixed to the inside of the feeding cylinder (220) and a grid net disc (242) arranged inside the support frame (241) and penetrating up and down.

7. The device for simulating the permeation deformation and the permeation clogging of soil according to claim 1, characterized in that: The lower end of the soil sample cylinder (210) is provided with a soil particle recovery tank two (250), and the bottom of the soil sample cylinder (210) is provided with a discharge pipe two (260) communicated with the soil particle recovery tank two (250).

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