缅甸电源电站引水隧洞不稳定围岩施工技术  

Construction technology for unstable surrounding rock of diversion tunnels of power source stations in Burma

作　　者：杨超先 

机构地区：[1]中国水利水电建设工程咨询西北公司,西安710065

出　　处：《西北水电》2011年第5期40-44,共5页Northwest Hydropower

摘　　要：以缅甸密松和其培水电站施工电源电站引水隧洞施工实践为例,分析了围岩不稳定的原因,针对引水隧洞在开挖掘进中,发生塌方所采取的小管棚注浆处理措施,特别是涌水引起的大塌方洞段采用超前大管棚并结合固结、回填灌浆的处理措施,取得了良好效果。Taking the water diversion tunnel construction of power source station for construction of Chibwe and Myistone hydropower projects for example,the paper analyzes the causes of surrounding rock instability and presents the treatment measures of small pipe roof grouting taken against collapse during excavation of diversion tunnels and the combined method of advanced large pipe roof grouting,consolidation grouting and backfill grouting in tunnel sections with large collapse due to water gushing.Good results are obtained by these measures.

关 键 词：小管棚 超前大管棚 涌水 引水隧洞 塌方 灌浆 

分 类 号：TV732[水利工程—水利水电工程] TV52