论文部分内容阅读
姚桥煤矿通过对二叠系太原组四灰含水层被堵塞钻孔和裂隙发育不畅钻孔利用盐酸洗井 ,一次洗通 ,取得了良好的效果。
The Yaoqiao coal mine has achieved good results by drilling the well with hydrochloric acid and cleaning it once it has been blocked the drilling of the four-ash aquifer in the Permian Taiyuan Formation and the poorly developed fracture.