Abstract: The Chengzhuang Coal Mine is threatened by the underground water when the strata is mined.
Abstract: The Chengzhuang Coal Mine is threatened by the underground water when the strata is mined.
文摘:成庄井田为新建矿井，下部煤层开采受地下水的威胁。
Abstract: The Chengzhuang Coal Mine is threatened by the underground water when the strata is mined.
文摘:成庄井田为新建矿井，下部煤层开采受地下水的威胁。