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CN-121994678-A - Test device for simulating precipitation infiltration of cracked soil

CN121994678ACN 121994678 ACN121994678 ACN 121994678ACN-121994678-A

Abstract

The application provides a test device for simulating crack soil precipitation infiltration, which comprises a box body, a soil moisture monitoring system and a precipitation simulation system. The box is used for holding experimental soil, soil moisture monitoring system is used for monitoring the change condition of moisture in the experimental soil, precipitation analog system is used for the precipitation on the simulation experimental soil, precipitation analog system includes the storage water tank, the bottom of storage water tank is provided with the hole of permeating water, the storage water tank is including the first horizontal area that links to each other in proper order, crack district and second horizontal area, crack district is sunken towards vertical decurrent direction for first horizontal area and second horizontal area, crack district includes first permeable area and second permeable area, first permeable area and second permeable area are the contained angle setting and contained angle opening towards vertical ascending direction. According to the test device provided by the application, the infiltration process of precipitation with different intensities in the cracked soil can be simulated on the basis of keeping the form of the soil cracks, so that the circulation process of soil moisture can be more clearly and comprehensively known.

Inventors

  • HE YUNLAN
  • ZHOU QIANG
  • WANG XIKAI
  • LI KEXIN
  • HAO SIDONG
  • HU YUAN

Assignees

  • 中国矿业大学(北京)

Dates

Publication Date
20260508
Application Date
20260325

Claims (10)

  1. 1. A test device for simulating precipitation infiltration of cracked soil, comprising: The box body is used for accommodating test soil; The soil moisture monitoring system is connected with the box body and is used for monitoring the change condition of moisture in the test soil; precipitation analog system with the box sets up relatively, including the storage water tank, the bottom of storage water tank is provided with the hole of permeating water, the storage water tank is including the first horizontal area, crack district and the second horizontal area that link to each other in proper order, crack district for first horizontal area with the second horizontal area is sunken towards vertical decurrent direction, crack district includes first permeable area and second permeable area, first permeable area with the second permeable area is the contained angle setting and contained angle opening orientation vertically ascending direction.
  2. 2. The test device for simulating precipitation infiltration of fractured soil of claim 1, wherein the interval between the water permeable holes of the first horizontal zone and the second horizontal zone is a first interval, the interval between the water permeable holes of the fractured zone is a second interval, and the first interval is less than the second interval.
  3. 3. A test device for simulating the precipitation infiltration of fractured soil according to claim 2, wherein the first water permeable zone and the second water permeable zone each comprise a plurality of sub-fractured zones, and wherein the plurality of sub-fractured zones are not in communication with each other.
  4. 4. The test device for simulating precipitation infiltration of fractured soil according to claim 3, wherein the precipitation simulation system further comprises a hydraulic water flow controller, a first water pipe, a second water pipe and a plurality of third water pipes, the first water pipe is communicated with the hydraulic water flow controller and the first horizontal area, the second water pipe is communicated with the hydraulic water flow controller and the second horizontal area, the third water pipe is communicated with the hydraulic water flow controller and the sub-fractured areas, and the plurality of third water pipes and the plurality of sub-fractured areas are in one-to-one correspondence.
  5. 5. The test device for simulating the precipitation infiltration of cracked soil according to any one of claims 1 to 4, wherein the bottom of the water storage tank comprises a rubber material area, the water permeable holes are all formed in the rubber material area, and the water permeable holes are opened under the condition that the water pressure in the water storage tank is greater than or equal to a threshold water pressure.
  6. 6. The test device for simulating the precipitation infiltration of cracked soil according to any one of claims 1 to 4, wherein a plurality of preset holes are formed in the box body, the soil moisture monitoring system comprises a plurality of soil moisture sensors and a data transmitter, and the soil moisture sensors are placed in the test soil and connected with the data transmitter through the preset holes.
  7. 7. A test device for simulating the precipitation infiltration of cracked soil according to any one of claims 1 to 4, wherein the casing is made of transparent organic glass, the thickness of the organic glass is 8mm, and the size of the internal space is 1000mm by 200mm by 800mm.
  8. 8. A test device for simulating precipitation infiltration of cracked soil according to any of claims 1 to 4, wherein the precipitation simulation system is arranged above the tank for simulating precipitation on experimental soil.
  9. 9. The test device for simulating precipitation infiltration of cracked soil according to any one of claims 1 to 4, wherein the test soil is cracked soil.
  10. 10. The test device for simulating precipitation infiltration of cracked soil according to any one of claims 1 to 4, wherein the water storage tank is made of polyvinyl chloride plastic.

Description

Test device for simulating precipitation infiltration of cracked soil Technical Field The application relates to the technical field of ecological hydrology, in particular to a test device for simulating crack soil precipitation infiltration. Background In wide arid and semiarid areas, atmospheric precipitation is the most important moisture source of soil moisture, and is the moisture basis for the survival and development of surface plants, so that the cyclic process of soil moisture has extremely important influence on vegetation. And cracks are generated on the ground surface due to drought or mining resources, and the existence of the cracks changes the soil moisture circulation process. In the research process of precipitation infiltration of cracks, the infiltration process of precipitation is difficult to observe by field cracks, but the original structure of the soil is destroyed by an indoor test after soil is collected, and the reconstructed cracks lose the original structure easily in the flushing process of precipitation, so that the method is different from the phenomenon observed in the field. In the prior art, an effective means for carrying out simulation research on the precipitation infiltration of the fractured soil is lacking. Disclosure of Invention In view of the above, the application provides a test device for simulating infiltration of precipitation of cracked soil, so as to simulate the infiltration process of precipitation with different intensities in cracked soil on the basis of retaining the form of the cracked soil, thereby more clearly and comprehensively knowing the circulation process of soil moisture. The application provides a test device for simulating crack soil precipitation infiltration, which comprises a box body, a soil moisture monitoring system and a precipitation simulation system. The water tank comprises a first horizontal area, a crack area and a second horizontal area which are sequentially connected, wherein the crack area is sunken towards the vertical downward direction relative to the first horizontal area and the second horizontal area, the crack area comprises a first permeable area and a second permeable area, and the first permeable area and the second permeable area are arranged in an included angle mode and an included angle opening is arranged towards the vertical upward direction. In some embodiments, the water permeable holes of the first horizontal region and the second horizontal region are spaced apart by a first spacing, the water permeable holes of the fracture region are spaced apart by a second spacing, and the first spacing is less than the second spacing. In some embodiments, the first water permeable region and the second water permeable region each include a plurality of sub-fracture regions, the plurality of sub-fracture regions not being in communication with one another. In some embodiments, the precipitation simulation system further comprises a hydraulic water flow controller, a first water pipe, a second water pipe and a plurality of third water pipes, wherein the first water pipe is communicated with the hydraulic water flow controller and the first horizontal area, the second water pipe is communicated with the hydraulic water flow controller and the second horizontal area, the third water pipe is communicated with the hydraulic water flow controller and the sub-crack areas, and the plurality of third water pipes and the plurality of sub-crack areas are in one-to-one correspondence. In some embodiments, the bottom of the water storage tank comprises a rubber material area, the water permeable holes are all formed in the rubber material area, and the water permeable holes are opened under the condition that the water pressure in the water storage tank is greater than or equal to the threshold water pressure. In some embodiments, the casing is provided with a plurality of preset holes, and the soil moisture monitoring system comprises a plurality of soil moisture sensors and a data transmitter, wherein the soil moisture sensors are arranged in the test soil and are connected with the data transmitter through the preset holes. In some embodiments, the housing is made of transparent organic glass having a thickness of 8mm and an internal space having a dimension of 1000mm by 200mm by 800mm. In some embodiments, a precipitation simulation system is disposed above the tank for simulating precipitation on the experimental soil. In some embodiments, the test soil is a cracked soil. In some embodiments, the water storage tank is made of polyvinyl chloride plastic. The application relates to a test device for simulating crack soil precipitation infiltration, which comprises a box body, a soil moisture monitoring system and a precipitation simulation system. The water tank comprises a first horizontal area, a crack area and a second horizontal area which are sequentially connected, the crack area is sunken towards the vertical downward d