Water-inrush Risk and Control Technology in Extra-thick Seam of Water-rich Overburden

Based on the occurrence features of extra-thick seam and water-rich overburden in Binchang Mining Area, the failure characteristics of Luohe thick sandstone aquifer under high-strength mining are analyzed by using the numerical simulation method. Considering the geological conditions, mining conditions and other factors, the water inrush danger and comprehensive control technology were proposed which consists of height permitted mining and depressurizing.