Abstract：Based on the comprehensive analysis of the geological and hydrogeological conditions of Libi mining area,this paper puts forward the index system of water inrush from Ordovician limestone aquifer in the coal seam floor by using the relevant factor analysis method. Six evaluation indexes, including the thickness of brittle rock, the ratio of brittle plastic lithology, the index of structural scale, the distribution density of collapse column, the value of water pressure and the water content of aquifer, were established. The water inrush risk zoning map of the No.3 coal seam floor was obtained based on the vulnerability index method.
穆金霞. 基于脆弱性指数法的里必煤矿3号煤层底板突水危险性评价[J]. 煤炭与化工, 2021, 44(10): 56-59，63..
Mu Jinxia. Risk assessment of water inrush of No.3 coal seam floor in Libi mining area on the basis of vulnerability index method. CCI, 2021, 44(10): 56-59，63..
