【摘要】 采用“下三带”理论计算法,对开采受承压水威胁9号煤层的安全区与危险区进行了划分,为西峪煤矿提供了宝贵的第一手资料,从而可以指导该矿安全生产。更多还原

【Abstract】 By using the calculating method based on “Three Underlying Belts”Theory, this paper makes division of 9#coal bed bearing the threat of pressed water into safe zone and danger zone, which provide valuable materials for Xiyu Coal Mine to guide the safety in production of this mine.更多还原