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CH4 permeation properties of fractured coal are of critical significance to coalbed gas recovery in coal seams. These properties are affected by the fracture network and by the dynamic evolution of fractured coal under excavation loads. Little information is presently available on the characteristics of fracture networks associated with different excavation methods and their influence on the CH4 permeability...
The structure of fractures in nature rock appears irregular and induces complicated seepage flow behavior. The mechanism and quantitative description of fluid flow through rock fractures is a difficult subject that has been greatly concerned in the fields of geotechnical, mining, geological, and petroleum engineering. In order to probe the mechanism of fluid flow and the effects of rough structures,...
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