某水电站引水隧洞蚀变围岩施工技术研究  

Study on Construction Technology of Altered Surrounding Rock of Headrace Tunnel in a Hydropower Station

作　　者：张树军 贺宁波 周志东 ZHANG Shujun;HE Ningbo;ZHOU Zhidong(China Anneng Group Third Engineering Bureau Co.,LTD,Chengdu,Sichuan,611135)

机构地区：[1]中国安能第三工程局有限公司,四川成都611135

出　　处：《四川水力发电》2021年第3期15-18,共4页Sichuan Hydropower

摘　　要：岩体的强度和结构是隧洞围岩稳定的基础。地下工程中的岩体相对复杂,其中蚀变围岩是一类很特殊的围岩,在隧洞等地下洞室开挖过程中,如何正确地对蚀变围岩进行辨识、分类,采取有针对性的施工方法,精准预判可能发生塌方的洞段,对洞室开挖施工具有重要的指导意义。以某水电站引水隧洞蚀变围岩施工为例,对其进行了分析和探讨。The strength and structure of rock mass are the basics to stability of surrounding rock in tunnel.Rock mass of underground engineering is relatively complex,among which the altered surrounding rock is a very special kind of rock type.For excavation of such underground caverns as tunnels,it is of great guidance significance to identify,classify correctly the altered surrounding rock and take corresponding construction methods,as well as predict accurately possible collapse in certain tunnel sections during excavation.Taking the construction of altered surrounding rock of headrace tunnel in a hydropower station as an example,this paper analyzes and studies the construction of altered surrounding rock.

关 键 词：蚀变围岩 隧洞 预防 水电站 施工 

分 类 号：TV7[水利工程—水利水电工程] TV52