降低水位法在井筒施工中过强含水层层的应用

doi:10.11799/ce201503015

煤炭工程 ›› 2015, Vol. 47 ›› Issue (3): 44-46.doi: 10.11799/ce201503015

降低水位法在井筒施工中过强含水层层的应用

冯松宝

宿州学院

收稿日期:2014-06-22 修回日期:2014-07-03 出版日期:2015-03-10 发布日期:2015-03-25
通讯作者: 冯松宝 E-mail:117923691@qq.com

Application of lower water level method in well construction is too strong aquifer layer- In order to Lu Cun the first mine subsidiary as an example

Received:2014-06-22 Revised:2014-07-03 Online:2015-03-10 Published:2015-03-25

摘要/Abstract

摘要： 芦村一矿副井在施工中钻孔内涌水有顶钻的现象，拔钻后从钻孔内喷出水柱高度达到1200mm，放炮后涌水量高达210m3/h。为了解决井筒施工中过强含水层的技术难题，针对芦村一矿副井的水文地质和工程地质条件，选择了井群降低水位技术，计算了降低40m水位所需排出的水量为62105m3/h，根据设计的结果布置了9个降水小井进行抽水。施工结果表明降水小井的数量合适，降水效果好。

关键词: 降低水位法, 强含水层, 洛河组, 芦村一矿副井

Abstract: Lu Cun mine auxiliary shaft in the construction depth of 22.7 ~ 25m, in the construction of drilling hole, obviously feel a top drill phenomenon, pulling from the borehole spurt water column height 1200mm, after blasting water reached 210m3/h. In order to solve the above problem, reduce 40m level required for the calculation of water discharge is 621.05 m3/h. According to the results of the design layout of the 9 construction well by pumping. The results show that the number of precipitation well construction in the design of appropriate, precipitation effect.

Key words: Reduce the water level method, The strong aquifer, Luohe group, Lu Cun the first mine subsidiary

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