摘要
广西那坡县上盖水电站扩建工程引水隧洞围岩工程地质条件差,通过施工方案比较,采用超前灌浆开挖方案施工,结果表明:超前灌浆开挖技术用于软弱地层隧洞开挖,能稳固围岩,达到安全施工降低成本的目的,且成洞好。
The Shanggai Hydropower Station expansion project is located in Napo County of Guangxi. Its diversion tunnel is accommodated in surrounding rock with poor engineering geological condition. After construction scheme comparison, pre-grouting and excavation scheme was adopted. The results of construction demonstrate that application of pre-grouting technique is capable of fixing the surrounding rock of excavated tunnel accommodated in weak strata, ensuring construction safety, rendering less cost and tunneling well.
出处
《广西水利水电》
2010年第1期31-35,共5页
Guangxi Water Resources & Hydropower Engineering
关键词
隧洞
软弱地质
超前灌浆
施工
Tunnel
weak stratum
pre-grouting
construction
