摘要
采煤工作面上覆采空区存在积水是造成透水事故的水源条件。为确保华阳二矿21051工作面安全开采,分析21051工作面与上覆3号煤层工作面采空区的位置关系和特点,进行瞬变电磁探测,通过在上顺槽进行瞬变电磁探测得到了1个异常区。在上顺槽通尺1180m处施工顶板探查钻孔,累计疏放出27821 m^(3)采空区积水,确保了工作面的安全回采,为类似顶板采空区积水范围探测提供了经验借鉴。
The water accumulated in the overlying goaf of the coal mining face is the water source condition that causes the water outburst accident.In order to ensure the safe mining of No.21051 face in Huayang No.2 Mine,the position relationship and characteristics between No.21051 face and overlying No.3 coal seam working face goaf were analyzed,and the transient electromagnetic exploration was carried out.An abnormal area was obtained by transient electromagnetic exploration in the upper roadway.The roof exploration drilling hole was constructed at 1180 m of the upper roadway,and the water accumulated in goaf of 27821 m^(3)was drained,which ensured the safe mining of the working face.The study provided experience for the detection of water accumulation range in similar roof goaf.
作者
李骏
Li Jun(No.2 Mine of Shanxi Huayang Group Xinneng Resources Co.,Ltd.,Yangquan 045008,China)
出处
《煤炭与化工》
CAS
2022年第12期58-61,共4页
Coal and Chemical Industry
关键词
水害防治
采空区积水
瞬变电磁
water damage prevention and control
water accumulated in goaf
transient electromagnetic
