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Horizontal seepage test unit and application method thereof

A test device and seepage technology, which is applied in the direction of measurement device, permeability/surface area analysis, suspension and porous material analysis, etc., can solve the problems of unstable wetting front, high production cost, inconvenient observation of wetting front time change, etc.

Pending Publication Date: 2017-12-01
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Soil horizontal permeability coefficient measuring instrument discloses a rock-soil medium horizontal permeability coefficient measuring instrument (Gu Honghai, Chen Qun. Soil horizontal permeability coefficient measuring instrument: CN, CN 102033034 A[P].2011.), which can The horizontal permeability coefficient and anti-seepage slope of the sample are measured, but the production cost of the instrument is high, and it is inconvenient to observe the change of the wetting front over time. The measurement method of the permeability coefficient is single and cannot be compared
"An Anisotropy Measuring Device and Method for the Hydraulic Properties of Unsaturated Soil" provides a method for measuring the hydraulic characteristic parameters of unsaturated soil by evaporation method (Chen Rui, Liu Jian, Wu Hongwei, et al. Anisotropy measurement apparatus and method for measuring non-saturated soil hydraulic properties of saturated soil hydraulic properties, Anisotropy measurement apparatus and method for measuring non-saturated soil hydraulic properties: CN, CN 103822845A[P].2014.), but it cannot measure saturated seepage characteristics of rock and soil media parameter
The "Journal of Arid Land" article provides a horizontal seepage test device (Hu S, Zhu H, Chen Y. One-dimensional horizontal infiltration experiment for determining permeability coefficient of loamysand[J]. Journal of Arid Land, 2017, 9( 1):27-37.), but the horizontal column is a cylinder, and the soil compaction is still axial compaction. In fact, the vertical permeability coefficient of the soil is measured, and this design is used for the horizontal seepage of coarse-grained soil The test must expand the cross-section of the horizontal column, and the wetting front may be unstable

Method used

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  • Horizontal seepage test unit and application method thereof
  • Horizontal seepage test unit and application method thereof
  • Horizontal seepage test unit and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0104] Such as Figure 1-4 As shown, a horizontal seepage test device includes a water chamber 1 , a seepage generating device 2 , and a support 3 . The seepage generating device 2 is arranged above the support 3 . The water chamber 1 is arranged on one side of the seepage generating device 2 and the support 3 . The seepage generating device 2 is a box structure. The side of the water chamber 1 close to the seepage generating device 2 is provided with a connecting port 101, and the end of the seepage generating device 2 near the water chamber 1 is provided with a water chamber connecting port 201, and the water chamber connecting port 201 of the seepage generating device 2 is connected to the The connection port 101 is connected and communicated. The seepage generating device 2 is provided with a water storage room 202 , a water isolation room 203 , an earth building tank 204 and a water collection tank 205 in order from near to far from the water chamber. The connection p...

Embodiment 2

[0106] Such as Figure 5-13As shown, embodiment 1 is repeated, except that the water chamber 1 is a cuboid structure. The top of the water chamber 1 is provided with a water chamber water inlet flow valve 102 . The side bottom of the water chamber 1 is provided with a water chamber drain valve 103 . A water level regulating valve 104 is provided on the side of the water chamber 1 and above the horizontal position of the seepage generating device 2 . The seepage generating device 2 is a box structure. One end of the seepage generating device 2 is an open structure and is connected and communicated with the connection port 101 of the water chamber 1 . The seepage generating device 2 further includes a first cover plate 206 , a first water barrier plate 207 , a second water barrier plate 208 , a first porous plate 209 , and a second porous plate 210 . The front end of the top of the seepage generating device 2 is fixed with a first cover plate 206, and the first cover plate 2...

Embodiment 3

[0108] Repeat Example 2, except that the side of the water chamber 1 is provided with 12 water level regulating valves 104 . Ten test holes 20402 are provided on the second cover plate 20401 . The water chamber 1 and the seepage generating device 2 are made of acrylic material.

[0109] Use Example 1

[0110] Using the method of embodiment 2, a kind of method of testing horizontal seepage, the method comprises the following steps:

[0111] 1) Configure materials similar to the rock-soil medium, and determine the filling density of the material and the thickness of the layered filling;

[0112] 2) insert the first water barrier 207, the second water barrier 208, the first porous plate 209, the second porous plate 210 in the seepage generating device 2, and paste the first barrier on the first water barrier 207 Water plate waterproof strip 20703, paste the second water barrier strip 20803 on the second water barrier 208, respectively seal the contact surfaces of the first por...

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Abstract

The invention relates to a horizontal seepage test unit. The horizontal seepage test unit comprises a water chamber, a seepage generating device and a support, wherein the seepage generating device is arranged above the support; the water chamber is arranged at one side of the seepage generating device and the support; the seepage generating device is of a box body structure; a connection hole is formed in one side, close to the seepage generating device, of the water chamber, a water chamber connection hole is formed in one end, close to the water chamber, of the seepage generating device, and the water chamber connection hole of the seepage generating device is connected and communicated with the connection hole of the water chamber; the seepage generating device is sequentially provided with a water storage room, a water insulation room, a soil heaping slot and a water collecting tank from the near to the distant according to the distance from the water chamber. The horizontal seepage test unit provided by the invention has the advantages that layered heaping condition of a rock-soil dielectric body in a natural world can be effectively simulated, horizontal osmotic coefficient of the rock-soil dielectric body can be accurately measured, and the horizontal seepage test unit can test horizontal seepage by adopting multiple methods.

Description

technical field [0001] The invention relates to a seepage test device and a seepage test method, in particular to a horizontal seepage test device and a use method thereof, belonging to the field of geotechnical engineering test equipment. Background technique [0002] Seepage theory is widely used in water conservancy, civil engineering, water supply and drainage, environmental protection, geology, petroleum, chemical industry and many other fields. In water conservancy projects, the most commonly used seepage problems are: seepage and stability of hydraulic structures on soil and permeable foundations, design and calculation of water collection structures such as wells and water collection corridors, side seepage of reservoirs and river canal banks etc. Seepage is involved in many aspects of hydraulic engineering. For example, the seepage and seepage in the permeable foundation of the hydraulic structure and the rock formation or soil connected to the building, the seepa...

Claims

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Application Information

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IPC IPC(8): G01N15/08
CPCG01N15/08
Inventor 董辉赵一帆罗正东蒋秀姿
Owner XIANGTAN UNIV
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