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    Analysis and Numerical Simulation of Hydrofracture Crack Propagation in Coal-Rock Bed

    Yiyu Lu1, Chenpeng Song1,2, Yunzhong Jia1, Binwei Xia1, Zhaolong Ge1, Jiren Tang1, Qian Li1

    CMES-Computer Modeling in Engineering & Sciences, Vol.105, No.1, pp. 69-86, 2015, DOI:10.3970/cmes.2015.105.069

    Abstract In underground coal mines, hydrofracture can cause the increase of breathability in the fractured coal bed. When the hydrofracture crack propagates to the interface between the coal bed and the roof-floor stratum, the crack may enter roof-floor lithology, thus posing a limit on the scope of breathability increase and making it difficult to support the roof and floor board for subsequent coal mining. In this work, a two-dimensional model of coal rock bed that contains hydrofracture crack was constructed. Then an investigation that combines the fracture mechanics and the system of flow and solid in rock failure process analysis (RFPA2D-Flow)… More >

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