摘要
Abstract
After heavy rainfall in Jincheng area,the water level of Ordovician limestone rose,which led to the local area of No.15 coal seam in Gulong Coal Mine becoming mining under pressure and threatened the safety of production.In view of this situation,the water outburst risk of Ordovician limestone water mining under pressure in No.15 coal seam of Gulong Coal Industry was systematically evaluated.Based on the latest construction of long observation hole and regional hydrogeological data,the water level elevation of Ordovician limestone in the mine field was speculated,and the thickness,lithological conditions and water-resisting performance of the aquifuge in the coal seam floor were analyzed.By calculating the water outburst coefficient,the pressure zone was divided into the relative safe area and the dangerous area of water outburst.This evaluation provided an important basis for mine geological and hydrogeological work,and helped to guide the safe mining of the mine.关键词
奥灰水带压开采/突水危险性/突水系数/隔水层/水害防治Key words
Ordovician limestone water mining under pressure/water outburst risk/water outburst coefficient/aquifuge/water disaster prevention and control分类
矿业与冶金
