汶南煤矿是新汶矿业集团进入深部开采的老矿井。
Wennan colliery of Xinwen coal mining Group is an old coalmine and is mining deep coal layer.
徐庄煤矿深部煤层的开采一直经受着太原组灰岩水的威胁。
Xuzhuang coal mine often encountered the hazard of water from Taiyuan Formation, as it mines the deep buried coal seams.
随着我国煤矿开采越来越趋向深部，煤矿软岩问题便越来越突出，特别是三软煤层回采巷道的围岩控制问题。
Along with the mines toward deep level in China, the problems of soft rock are becoming more and more outstanding, especially controlling surrounding rock of three-soft coal seam.
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