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Feilong Li, Changshan Jiang, Guoqing Cai, Jianjun Luo, Qian Yu, Heqing Zhang and Lei Wang
In this study, a refined three-dimensional stratigraphic?structural model is established based on ABAQUS finite element software, and the basis for determining pneumatic and vibration loads is explained in detail. From this, the force characteristics of ...
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Songqiang Xiao, Zhaolong Ge, Yiyu Lu, Zhe Zhou, Qian Li and Lei Wang
Water jet drilling (WJD) technology is a highly efficient method to extract coalbed methane from reservoirs with low permeability. It is crucial to efficiently remove the coal fragments while drilling. In this study, to disclose coal fragmentation featur...
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