摘要
清江水布垭地下电站尾水隧洞位于Ⅳ~Ⅴ类岩体中,软岩开挖成洞难,施工中采用了上、下层分层开挖,随机锚杆,超前锚杆(注浆),钢支撑支护及时跟进的方式,确保了围岩的稳定和施工安全。
The tailrace tunnel of Shuibuya Hydropower Station is located in soft rockmass of classification Ⅳ-Ⅴ and is excavated according to the procedure of upper section and lower section in sequence.The surrounding rock is strengthened with stochastic anchor bars and advanced-grouted bars,and is supported with steel frames timely in construction course.The excavation is completed safely.
出处
《湖北水力发电》
2008年第6期21-23,共3页
Hubei Water Power
关键词
尾水隧洞
开挖施工
控制爆破
支护
tailrace tunnel
excavation
controlled blasting
support
