Therefore, study on the deformation and breakage law of upper and down floor of coal layer, the character of formation, each fault factor are the key problem for prevention the water inrush.
因此，对煤层顶底板的变形破坏规律、构造特征以及断层各要素的研究都是防治奥灰岩含水层突水的关键问题。
Coal is always a main energy sources in our country, and exploitation of coal was threatened by many mine geological disasters, in which the water inrush from mine is the most primary problem.
煤炭一直是我国的主要能源，煤炭开采受到多种矿井地质灾害的威胁，其中最大安全问题是矿井突水事故。
Water inrush has always been a serious problem in safety work of mine enterprise.
矿井突水一直是困扰矿山企业安全生产的突出问题。
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