摘要
随着矿井开采深度的不断增加,底板突水已成为影响煤矿安全生产的重要灾害之一。以新景煤矿15号煤层为研究对象,结合矿井地质条件,利用“五图-双系数法”对15号煤层进行了突水危险性评价。经过理论分析计算得出,15号煤层的带压系数在0.0121~0.0380 MPa/m,突水系数在0.0179~0.0665 MPa/m,以带压系数与突水系数双系数为评价指标,带压系数为主,结合“三级判别”进行带压等级分区,得到井田西南煤层最低点附近区域属Ⅱ级评价,其它区域属Ⅰ级评价,15号煤层具备带压开采条件,并对该煤层的安全开采提供指导意义。
With the continuous increase of mine mining depth,floor water inrush has become one of the important disasters affecting the safety of coal mine production.No.15 coal seam of Xinjing Mine was taken as the research object,combining with the mine geological conditions,the risk of water inrush of No.15 coal seam was evaluated by using"five graph-double coefficient method".Taking the"pressure coefficient"as the main evaluation index,combining with the"water inrush coefficient"evaluation index and"three-level discrimination",the evaluation standard was determined.No.15 coal seam of theoretic analysis calculation with pressure coefficient between 0.0121~0.0380 MPa/m,the water inrush coefficient between 0.0179~0.0665 MPa/m,with coal seam mining field areaⅡlevel evaluation,the other areasⅠlevel evaluation,the results of under pressure mining of No.15 coal seam provided guidance significance.
作者
李晓伟
Li Xiaowei(Yangquan Xinyu Geotechnical Engineering Corporation Ltd.,Yangquan 045000,China)
出处
《煤炭与化工》
CAS
2021年第5期44-46,50,共4页
Coal and Chemical Industry
关键词
带压开采
突水危险性
带压系数
突水系数
mining with pressure
water inrush risk
with pressure coefficient
water inrush coefficient
