Abstract：In order to ensure the safe mining of the first mining face in the west well of Xingtai Mine, the ' surface directional near horizontal bedding branch drilling group ' technology was used to grout and cut off the hydraulic supply channels between Ordovician limestone, Benxi limestone and Daqing limestone. This paper mainly analyzes the Ordovician limestone leakage. On the one hand, according to the relevant literature, the length of grouting section, the depth of leakage point entering Ordovician limestone, the elevation of Ordovician limestone water level before and after pumping well washing, the Ordovician limestone water level difference before and after pumping well washing, and the water temperature of pumping well washing in the actual project are selected as the related factors to draw the correlation curve between each factor and the leakage. Through the grey correlation analysis, the main control factors affecting the Ordovician limestone leakage are determined. On the other hand, the development of Ordovician limestone karst is determined by analyzing the distribution of leakage in plane and profile.
周 莹，马占伟. 关于地面区域治理过程中奥灰漏失量的分析[J]. 煤炭与化工, 2022, 45(1): 75-78，82..
Zhou Ying， Ma Zhanwei. Analysis on the Ordovician limestone leakage in the process of surface regional control. CCI, 2022, 45(1): 75-78，82..
