System to actively control how water moves through porous media
A porous medium, active control technology, applied in the field of control systems, can solve problems such as the impact of the natural environment, improve mechanical properties, etc., to achieve the effect of changing the hydraulic properties of soil
Inactive Publication Date: 2016-06-22
GUANGZHOU HKUST FOK YING TUNG RES INST
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Problems solved by technology
[0004] At present, the method of strengthening the slope and preventing the infiltration of pollutants will have a certain impact on the natural environment, and there is no implementation system to improve the mechanical properties by changing the hydraulic properties of the soil itself
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[0016] like figure 1 As shown, the present invention discloses a system for actively controlling the migration mode of water in porous media, including a water migration device 1, a measurement device 2, and a pressure gradient control device 3. The water migration device 1 is equipped with a microporous material. The water transfer device 1 is sealed and connected with the measuring device 2; the pressure gradient control device 3 is sealed and connected with the measuring device 2, and the pressure gradient control device 3 applies pressure to the measuring device 2. Vacuums of different degrees generate a pressure gradient inside and outside the water transport device 1 , and the measuring device 2 is used to measure the amount of water body transport.
[0017] The system of the present invention enables controllable pressure gradients.
[0018] The measuring device 2 includes an electronic balance, and the water movement is measured by the electronic balance.
[0019] Th...
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The invention provides a system for active control of a transporting mode of water in a porous medium. The system comprises a water transporting device, a measuring device and a pressure gradient control device, wherein a water-permeable part made of microporous material is arranged on the water transporting device; the water transporting device is in seal connection with the measuring device; the pressure gradient control device is in seal connection with the measuring device; the pressure gradient control device applies different degrees of vacuum to the measuring device, so that a pressure gradient is generated between the interior and the exterior of the water transporting device; the measuring device is used for measuring the transporting amount of a water body. The invention has the benefits that the system has the functions of changing the water content of a soil body and further changing hydraulic characteristics of the soil body; meanwhile, the system can measure the transporting amount of water in the porous medium.
Description
technical field [0001] This invention relates to control systems, and more particularly to systems that actively control the manner in which water migrates through porous media. Background technique [0002] In recent years, due to severe climate change, heavy rainfall often occurs, which causes landslides and other geotechnical engineering disasters. At the same time, structural reinforcement in the form of concrete, for example, has a greater impact on the environment. At present, geotechnical environmental engineering has received more attention. The use of plants to strengthen slopes and prevent infiltration of pollutants has become the focus of research. [0003] Plants reduce the water content in the soil due to transpiration, thereby increasing the matric suction and reducing the hydraulic conductivity. The increase of matrix suction effectively enhances the shear strength of the soil and reinforces the geotechnical structure. The reduction of soil permeability co...
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IPC IPC(8): G01N15/08
Inventor 吴宏伟维文梁钧和乔劼
Owner GUANGZHOU HKUST FOK YING TUNG RES INST