小天都水电站气垫调压室洞壁围岩的高压透水性测量研究  

Study of permeability character under high water pressure in the surrounding rock of the air-cushion surge tank in Xiaotiandu hydropower station

作　　者：郭启良[1] 王海忠[1] 张志国[1] 

机构地区：[1]中国地震局地壳应力研究所,北京100085

出　　处：《水力发电学报》2005年第1期102-106,共5页Journal of Hydroelectric Engineering

摘　　要：在小天都水电站气垫调压室勘探洞内的高压透水测试结果表明 ,随着探洞向山体深部延伸 ,岩体结构愈趋完整 ,洞壁围岩的透水 (气 )性愈趋减弱。探洞最深部的 0 + 72 9m测点 ,围岩的高压 (6MPa)透水率小于 1 0Lu。因此 ,该洞段围岩具有较为理想的高压封闭性能 ,具备修建气垫调压室的基本地质条件。The permeability measurement results in the rock of air-cushion surge tank indicate that the permeability of surrounding rock is weaker as the rock constructive integrality is better into the mountain. At the deepest site 0+729 m, the permeability of surrounding rock is less than 1.0Lu.It indicates that the ideal position fits the basic geological requirements for building the air-cushion surge tank.

关 键 词：工程地质 岩体透水率 高压压水 气垫调压室 

分 类 号：TV223.1[水利工程—水工结构工程]