Device and method for monitoring the whole process of soil mechanical response during gas penetration
A gas permeation and monitoring device technology, applied in the direction of measuring devices, permeability/surface area analysis, scientific instruments, etc., can solve problems such as lack, and achieve the effect of complete functions, convenient operation, and simple structure
Active Publication Date: 2021-06-22
HEFEI UNIV OF TECH
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Problems solved by technology
At present, the market lacks relevant indoor test equipment, so the development of corresponding monitoring equipment and test methods has great engineering practical significance and theoretical research value for in-depth understanding of gas permeation characteristics in multi-boundary soil.
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Embodiment Construction
[0057] The following is attached Figure 1-Figure 5 Embodiments of the present invention are described in detail.
[0058] Depend on Figure 1-Figure 5 It can be seen that the present invention provides a monitoring device for the whole process of soil mechanical response in the process of gas penetration. The gas permeation includes flexible boundary gas permeation and rigid boundary gas permeation, and the monitoring device includes a main body device and a gas injection device.
[0059] The main device includes a base 12 , a sample box 13 , a cover 27 and two partitions 20 . The sample box 13 is a hollow box with a rectangular cross section, and the base 12 is a rectangular plate. The sample box 13 is vertically installed at the center of the base 12 and forms an integral structure with the base 12. During monitoring, it is covered on the top of the sample box 13 to realize the sealing of the inner cavity of the sample box 13 .
[0060] In this embodiment, fastening scr...
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The invention provides a device and method for monitoring the whole process of soil mechanical response in the process of gas infiltration, which belongs to the technical field of environmental geotechnical engineering and can be used to monitor soil pressure-deformation-cracks in the process of rigid boundary gas infiltration and flexible boundary gas infiltration Monitor the whole process. The main device mainly includes a sample box, a permeable stone, a flexible diaphragm, a rigid partition, and a grid measuring screen. The flexible diaphragm and the rigid diaphragm are used in the flexible boundary gas permeation test and the rigid boundary gas permeation test respectively. During the test, the lateral deformation of the soil and the pore pressure at each position are recorded by the displacement sensor and the pressure sensor respectively, and combined with the grid volume Screen monitoring monitors the development of shallow cracks in the soil. By controlling different gas injection pressures and confining pressures, the whole process can monitor the mechanical response of the soil during the gas penetration process of the rigid / flexible boundary of the sample under different dry densities and different water contents.
Description
technical field [0001] The invention relates to the technical field of environmental geotechnical engineering, in particular to a device and method for monitoring the whole process of soil mechanical response during gas infiltration, which can be used to monitor soil deformation-cracks in the process of rigid boundary gas infiltration and flexible boundary gas infiltration Monitoring of the whole process. Background technique [0002] The migration characteristics of gas in porous media has always been a hot research issue in the field of rock and soil. Gas seepage phenomenon widely exists in geotechnical engineering fields such as underground engineering, environmental engineering and energy industry, such as gas seepage phenomenon in aeration technology and gas pressure splitting method, water-gas seepage theory in unsaturated soil, groundwater oil pollution The control and recovery technology of oil and coalbed methane, the seepage phase transition problem in oil and coa...
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IPC IPC(8): G01N15/08
CPCG01N15/0826
Inventor 许龙查甫生朱方华刘晶晶康博
Owner HEFEI UNIV OF TECH