Water-inrush mechanism research mining above karst confined aquifer and applications in North China coalmines

Karst water poses great menace to vast and extensive coal-bearing region in China. The large water bodies which are highly pressurized have caused appalling disasters. This study takes example from the North China coal-bearing region and introduces karst aquifer distribution. It points out the major contributors to karst water burst and its relation with bottom plate deformation under mining activities. The analysis of criteria to determine karst water burst focuses on two elements (water burst coefficient and critical water burst index) and their positive application in Huaibei Luling coalmine, North China coal-bearing region. All achievements can be of reference to other coal-producing countries which are confronted with karst water hazards.