Engineering geological problems related to high geo-stresses at the Jinping I Hydropower Station, Southwest China
Engineering geological problems related to high geo-stresses at the Jinping I Hydropower Station, Southwest China
复制标题
西南锦屏一级水电站高地应力工程地质问题
DOI：
10.1007/s10064-010-0267-1
复制
发表时间：
2010-08-01
影响因子：
4.2
通讯作者：
Liu, Jianyou
中科院分区：
文献类型：
--
作者：
Gong, Manfu;Qi, Shengwen;Liu, Jianyou
The Jinping I Hydropower Station will generate some 3,600 MW. The site of the 305 m high arch dam is in a steep, 1,500-2,500 m deep valley on the Yalong River in Sichuan Province, South West China. The present geo-stresses in the marble bedrock are up to 40 MPa. Relaxation due to river incision has resulted in fractures opening up to 350 m from the rock face. The geo-stresses in the rock mass are significantly affected by the topography. A concentration of stress has developed at the foot of the slope and in the valley floor; it was estimated there would be 132 mm of relaxation/heave of the formation level. The paper discusses some of the engineering geological problems encountered as a result of the high geo-stresses and the mitigation measures undertaken.
