Evolution process and prediction of karstic geologic abnormal bodies in Panxie coal mining area in Huainan

Aiming at the hazards caused by water inrush from karst passages during deep mining, this paper discusses the characteristics of the geologic abnormal bodies (called GAD) according to recent detection data in Panxie mine. And also based on the analysis of macroscopic geological background, from the sedimentary history, tectonic history, development of the ancient karst and interaction of ground water, GAD evolution process has been deduced. Through the analysis of the ancient landform and hydrogeological characteristics of dewatering test in different depth, some important karst information is obtained indirectly. The distribution of GAD is predicted, which can provide a valuable reference for how to prevent and control karst water disasters during deep mining.