高强度、大采高开采条件下，硬煤煤壁破坏的频率及程度逐渐严重，为提高该类工作面煤壁稳定性，实现安全、高效开采，采用室内试验、理论分析及现场实测综合手段对硬煤煤壁破坏形式、发生机理及影响因素进行分析。
... longwall face (LW face) 长壁工作面：长度一般在50m以上的采煤工作面。 shortwall face 短壁工作面：长度在50m以下 wall 煤壁 ...
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研究了煤炭地下气化炉前方煤壁的周期性非稳态导热。
In this paper, the Periodic unsteady state heat conduction of coal wall in the front of underground coal gasification stove is researched.
分析了灵泉露天煤矿地质水文状况，提出了该矿f 4断层带煤壁回采方案。
We have analysed the geological hydrology state of Lingquan open-pit coal mine, and proposed the coal extraction scheme of this mine F4 shear-zone coal wall.
摘要 煤壁注浆加固技术是防治煤壁片帮的有效措施，其关键环节在于注浆量的选择。
Abstract : The coal wall grouting reinforcement technique is an effective measure to prevent and control rib spalling, and its key procedure is the selection of grouting quantity.
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