西藏直孔水电站深厚覆盖层坝基防渗墙施工  

Construction Technology for Cut-off Wall in Deep Alluvium of Zhikong Power Station Foundation in Tibet

作　　者：李建军[1] 邵生俊[1] 刘奉银[1] 

机构地区：[1]西安理工大学水利水电学院,陕西西安710048

出　　处：《水力发电》2006年第5期37-39,共3页Water Power

摘　　要：西藏直孔水电站防渗墙(墙体最深达到79 m)建造在青藏高原深覆盖层中,自然条件恶劣,地质条件复杂,给造孔成槽带来极大困难。施工中根据地层的不同特点,分别采用了钻抓法、钻劈法、纯抓法等多种造孔工艺,较好地解决了造孔过程中遇到的各种问题,造孔工效在同类地层中达到较好水平。The cut-off wall （with the maximum wall depth of 79 m） for the Zhikong Hydropower Station in Tibet is constructed in the deep alluvium of Qinghai-Tibet Plateau with poor natural conditions and complex geological conditions, so that it is very difficult to drill a hole for trench. In the construction, many methods such as drilling-clawing, drilling-splitting and pure clawing have been used in the forming of hole, according to the different characteristics of stratum, which solves the various problems encountered in the forming of hole so that its working efficiency is good.

关 键 词：深厚覆盖层 防渗墙 施工技术 西藏直孔水电站 

分 类 号：V52[航空宇航科学与技术—人机与环境工程] TV543[水利工程—水利水电工程]