There are conditions of seam gas formation in the Enhong basin and the Laochang coalfield of Laochang-Guishan basin.
恩洪盆地和老厂-圭山盆地老厂煤矿区具备了形成煤层气藏的条件。
Based on the soft-rock roadway of Enhong colliery in Yunnan province, this paper analyzes by nmuerical simulation the three supporting plans for soft-rock roadway junctions.
分析了深部软岩巷道硐室的支护状态稳定因素，结合现场实际情况，总结了深部软岩巷道破坏后二次支护的方法和原则。
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