A device and method for measuring seepage evolution law of coal rock
A measurement device and seepage technology, applied in measurement devices, permeability/surface area analysis, suspension and porous material analysis, etc., can solve problems such as inability to determine seepage distribution parameters, uncertainty in data measurement, difficulty in solving analytical formulas, etc. Achieve the effect of high practical value, simple structure and low input cost
Active Publication Date: 2020-05-19
XIAN UNIV OF SCI & TECH
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However, these two formulas are only applicable when the seepage medium and convenient conditions are relatively simple. In engineering practice, the seepage medium and boundary conditions are relatively complicated, especially in rock masses with heterogeneous media and anisotropy. It is more difficult to solve by analytical formula
Random factors that exist objectively in engineering (such as the randomness of water head and permeability coefficient) will lead to the randomness of seepage measurement data, making data measurement uncertain, and the distribution parameters of seepage cannot be determined
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[0059] like figure 1 , figure 2 and Figure 2-1 A coal-rock seepage evolution law measuring device shown includes a coal-rock resistivity measuring device 3, 2N measuring electrodes 2, an electrode supporting mechanism supporting the 2N measuring electrodes 2, and driving the electrode supporting mechanism to carry out An electric lifting mechanism that lifts up and down, the electric lifting mechanism and the electrode support mechanism are connected by transmission, and the electrode support mechanism is set on the outside of the test piece 5; wherein, N is a positive integer and N≥6; the The electrode support mechanism includes an upper support ring 1, a lower support ring 4 located directly below the upper support ring 1, and a connection structure that securely connects the upper support ring 1 and the lower support ring 4 as a whole, and the upper support ring 1 and the lower support ring The rings 4 are arranged horizontally and both are circular rings set on the out...
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Abstract
The invention discloses a device and a method for measuring a seepage evolution law of coal rocks. The device comprises a coal rock resistivity measurement device, 2N measurement cathodes, an electrode support mechanism and an electric lifting mechanism, wherein the electrode support mechanism is used for supporting 2N measurement cathodes, the electric lifting mechanism is used for driving the electrode support mechanism to move up and down and is in transmission connection with the electrode support mechanism, and the electrode support mechanism externally sleeves a to-be-tested component; and 2N measurement cathodes are uniformly distributed along the peripheral direction and are divided into an upper group and a lower group. The method comprises the following steps: (1) setting parameters; (2) carrying out preparatory work before measurement; and (3) measuring the seepage evolution law of the coal rocks. According to the device, the resistivity change of the tested component causeddue to the seepage of water is simply, conveniently and accurately measured by virtue of 2N measurement cathodes distrusted on the electrode support mechanism along the peripheral direction, so thatthe seepage evolution law of the coal rocks can be simply, conveniently, and accurately measured in real time on site.
Description
technical field [0001] The invention belongs to the technical field of coal rock seepage parameter measurement, in particular to a device and method for measuring coal rock seepage evolution law. Background technique [0002] Most rock mass engineering does not exist in a single geological environment, but in a complex multi-field environment, such as: stress field, seepage field, temperature field, and hydrochemical field. When studying seepage problems, the lines connecting points with equal pressures are equal pressure lines, and the lines perpendicular to the isobaric lines are streamlines. It can be called seepage field. Seepage is a common problem in engineering, and there are many engineering accidents caused by seepage. The traditional method of determining seepage parameters (also known as seepage field parameters) often uses J.Dupuit formula or C.V.Thesis formula to analyze and solve the actual seepage field parameters through field hydraulic experiments. Howeve...
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IPC IPC(8): G01N15/08G01N27/04
CPCG01N15/08G01N27/041
Inventor 赵栓峰王文波郭卫
Owner XIAN UNIV OF SCI & TECH