The thickness of the Ordovician limestone at the bottom of the coal-bearing strata in the North China Coalfield is large and the karst fissure is developed and the water-rich is strong. With the increasing depth of the mine, the Ordovician limestone may pass through the small subsidence column, fault and post-mining coal seam floor activation fissures and other concealed guide ( including ) water structure and waterlogging accident occurred. Therefore, the exploration and treatment of large mining deep face of the hidden water mining face is needed.
朱建民. 大采深矿井工作面底板探查治理技术的探讨[J]. 煤炭与化工, 2018, 41(2): 14-16.
Zhu Jianmin. Discussion on the floor exploration and treatment of mine with large mining depth. CCI, 2018, 41(2): 14-16.
