奥灰岩溶陷落柱特大突水灾害的治理(上)

Control of Very Heavy Water Inrush from Sinkholes Connecting with Ordovician Limestone

开滦煤矿在经历强烈地震灾害恢复后八年,又遭到了最大突水量为2053m^3/min的奥灰岩溶陷落柱特大突水灾害,8天时间就将两座年产共500万吨的大型矿井淹没并危及开滦整个东部矿区。面对罕见的大突水,具有光荣传统的开滦煤矿的工程技术人员和工人,在党中央的领导和全国四面八方的支援下,解放思想,勇于实践,依靠自己的力量,仅用了1年另两天时间,成功地治服了这场空前的特大突水灾害,形成了一整套具有中国特色的快速治水新技术。开滦治水的成功经验,在我国采矿史上写下了光辉篇章。本刊将分两期连载开滦的治水方法并简要介绍17项治水新技术。

this, paper describes the comprehensive water control methods used in Fangezhuang Colliery, namely, water drainage, cutting off of water and sealing off the water.Water drainage——20 large-sized submarine pumps were used in Lujiatuo and Fangezhuang collieries with a delivery of 300 m^3/min. to control the rising of water level.Cutting off the water——'three-sections horizontal injection method'and 8 grouting techniques were applied to cut off the water in 3 roadways at theboundary between Lujiatuo and Fangezhuang with water flowing at an average rate of 300 m^3/min.Sealing off the water——radio perspective instrument was used to detect the shape of No 2171 sinkhole in Fangezhuang, and computers were employed to process the hydrogeological data. The 'three section vertical grouting method' was introduced, and the inrush water source was sealed off with a success over 99%.