Abstract
Coal rock creep is an inevitable phenomenon in coal mining, fluid seepage is involved in coal rock creep in coal mine, and coal rock creep and fluid flow interact. To determine the coal rock creep–seepage law, in this paper, CSCG-160-type gravity hydraulic constant load creep seepage test system developed by China University of Mining & Technology (Beijing) is used to carry out creep seepage test with step loaded axle load in certain condition of confining pressure for raw coal rock sample; in the test, coal rock-related deformation (axial strain, volumetric strain) in the creep process is measured and seepage is recorded. By analysis of the test result, the creep deformation – seepage law during coal rock creep seepage is obtained. The study result of very important practical guiding significance for dynamic disaster and water damage prevention and control of gas in coal mine.
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