摘要
木瓜矿10-102工作面回风顺槽在掘进期间巷道涌水量突然增大,根据相关地质资料得知该面上方存在老空水。为了保证掘进的顺利进行,采用瞬变电磁法对掘进面前方100 m进行了探测。探测结果表明在巷道左前方存在含水区域,即于50~70 m(-30~-50 m)的区域内存在明显低阻异常区。钻探验证得出该区域为9-104采空区积水造成的低阻异常,出水点位于掘进面前方53 m、巷道左帮45 m处,主体部分位于煤层顶板上方4.5 m。结合巷道顶底板情况和现场条件采用定向钻孔技术对9-104采空区积水进行疏放,排放老空水96 000 m^(3)后,各个钻孔涌水量均趋于正常,保证了巷道的安全掘进。
It is believed that there is goaf water in the upper part of the face due to the sudden increase of water inflow of the roadway in 10-102 working face of Mugua Colliery. In order to ensure the smooth progress of the excavation, a transient electromagnetic method has been used to detect 100 m in front of the heading face, which shows there is a water-bearing area in the left front of the roadway, that is, there is an obvious low-resistance anomaly area in the coordinate area 50~70 m(-30~-50 m). Drilling verification shows that this area is abnormal low resistance caused by water in the 9-104 goaf. The water outlet is located 53 m ahead of the excavation, 45 m from the left side of the roadway, and the main part is 4.5 m above the roof.Combining the roof and floor conditions of the roadway and the site conditions, the directional drilling technology has been used to drain the water in the 9-104 goaf. After discharging a total of 96,000 m^(3) of goaf water, the water inflow of each borehole tends to be normal, which ensures the safety excavation of the roadway.
作者
姚泽峰
Yao Zefeng(Geology Dept.,Lvliangshan Coal and Electricity Co.,Ltd.,Huozhou Coal and Electricity Group,Fangshan,Shanxi 033102)
出处
《江西煤炭科技》
2022年第1期139-141,共3页
Jiangxi Coal Science & Technology
关键词
老空积水
钻孔疏排水
瞬变电磁法
定向钻孔
goaf water
borehole drainage
transient electromagnetic method
directional drilling
