等壳水电站导流隧洞塌方分析及处理

Treatment and Analysis of Landslide for Water Diversion Tunnel of Dengke Hydropower Station

云南保山市等壳水电站导流隧洞工期安排较紧,能否按期完工,将影响到工程的截流时间,在隧洞开挖贯通后出现塌方,处理难度大,安全隐患高,采用安全、可靠、快捷的处理方案显得尤为重要。结合管棚和灌浆处理的原理,利用现有的施工设备,采用回渣后浇筑混凝土的处理方案成功实现了预期目标。本工程对导流隧洞塌方的处理方案的类似工程有一定借鉴作用。

The construction time schedule of the water diversion tunnel of the Dengke Hydropower Station,Yunnan BaoShan,was very short.Whether it could be completed on time will affect the daming of the project.During the excavation of the tunnel,landslide occurred frequently,which were difficult to treat.A safe,reliable and quick handling programme was very important and badly needed.Combining the principle of tubular shed and grouting,making use of the current construction equipment,the backing rock ballast scheme w...