摘要
为防止15202运输顺槽掘进期间出现突水事故,基于运输顺槽的地质条件可知,巷道开口125 m的位置处发育一个陷落柱,存在导通顶板岩溶裂隙水的可能,结合瞬变技术原理,在15202运输顺槽掘进100 m后采用瞬变电磁技术,进行超前区域富水性的探测,结合运输顺槽特征进行探测方案的设计。经探测在掘进迎头30 m位置处视电阻率的低阻异常现象较为显著,该区域存在着极大的富水可能,并经钻孔探测得到了验证。结果表明:掘进头前方30 m存在富水区域,瞬变电磁超前探测为巷道顺利掘进通过富水区域提供了保障。
In order to prevent the water inrush accident due to leading the karst fractured water in the roof of subsided column 125 m away from the roadway mouth during the tunneling at 15202 transportation crossheading,the author proposes the application of transient electromagnetic technology to detecting the water yield in the advanced area,whose results show that there is a water-rich area 30 m in front of the heading faces and the transient electromagnetic advanced detection provides a guarantee for successful driving through the water-rich area.
作者
高洋
Gao Yang(Shengtai Coal Industry Co.,Ltd.,Shanxi Jinneng Group Co.Ltd.,Jincheng,Shanxi,048400)
出处
《江西煤炭科技》
2020年第3期52-54,共3页
Jiangxi Coal Science & Technology
关键词
瞬变电磁
富水性
超前探测
transient electromagnetic
water yield
advanced detection
