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.
出处
《西北水电》
2011年第5期40-44,共5页
Northwest Hydropower
关键词
小管棚
超前大管棚
涌水
引水隧洞
塌方
灌浆
small pipe roof
advanced large pipe roof
water gushing
water diversion tunnel
collapse
grouting
