Abstract: The paper introduces distortion monitoring and salic features of Three Gorges hydro junction right bank underground power station water intake of water diversion tunnel in stage of construction, and analyzes preliminarily dimensional deformation and internal deformation of side slope of the No. 3 water diversion tunnel water intake. The outcome display that excavating the No. 3 water diversion tunnel didn’t induce solid rock to generate hazard distortion, and the rock mass in side slope is steady.

摘要： 本文介绍了三峡水利枢纽右岸地下电站引水洞进水口施工期变形监测及其特征，对3号引水洞进水口洞脸边坡的外部变形及内部岩体变形进行了初步分析，结果显示3号引水洞的开挖没有引起基岩产生危险性变形，边坡岩体目前是稳定的。