摘要
棋盘井煤矿主采16#煤层,掘进期间遇DF1、DF3断层,受到煤层底板奥灰水突水威胁。井田范围内16#煤层与奥陶系灰岩的平均间距为38.72 m,最高带压1.9 MPa。以此为例,提出了断层探查、泄压引流及靶面帷幕注浆治理方案。通过探放水及治理工程的实施,确保了导水断层带的掘进安全。
Qipanjing Coal Mine,which mainly mines the 16#coal seam,is threatened by ordovician limestone water hazard. During the roadway excavation,DF1 and DF3faults are founded. The average distance between 16#coal seam and ordovician limestone is about38. 72 m. After calculation,mining the 16#coal seam would be under 1. 9 MPa water pressure. Plans for faults detection,dewatering and target surface curtain grouting are presented and conducted to make sure that the roadways near fault zone are safely excavated.
出处
《煤矿安全》
CAS
北大核心
2015年第6期133-135,共3页
Safety in Coal Mines
关键词
承压含水层
断层
水害
泄压引流
靶面帷幕注浆
突水
confined aquifer
fault
water disaster
pressure relief drainage
target surface curtain grouting
water outburst
