溪洛渡水电站右岸导流洞大型洞室群开挖施工关键技术

溪洛渡水电站导流洞工程规模居世界前列，其开挖施工具有开挖工程量大、导流洞及闸门井开挖断面尺寸大、洞室群开挖干扰大等特点，能否按期完成开挖施工，是导流洞工程成败的关键，也是溪洛渡水电站能否按期截流的关键。结合右岸导流洞大型洞事群开挖的实际条件和开挖施一实践，对导流洞大型洞室群开挖施工的关键技术进行了分析，提出了措施和对策，可供其他类似工程施工借鉴和参考。

Key technology in excavation of large size diversion tunnels on the right bank of Xiluodu Hydropower Station

The size of the diversion tunnels of the Xiluodu hydroelctrie project is leading the world with its large volume of excavation, large size of sectional areas of the diversion tunnels and gate shafts, greatest interference during exeavation of tunnel gTOUpS. Whether it can be completed on time will be the key for the success of the diversion tunnel and closure of the river of entire the project on schedule. This paper analyses the key technologies vital to excavation of large diversion tunnels based on the actual conditions of the right bank diversion tunnels, and gives counter measures and method which may be of reference to other project of similar natures.