雅鲁藏布江街需水电站巨型危岩体基本特征及防治措施

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Abstract Large dangerous rock mass located outside excavation line in hydropower project construction has a significant impact on its safety and operation. It?s difficult to reach and to reinforce them，and which put forward higher requirements to geological exploration. There are deep valley，high and steep slopes on the upstream of the Yarlu Zangbo River，and there is a large dangerous rock mass，about 37.5×104 m3，in the left dam abutment of Jiexu hydropower station. By finding out occurrence boundary of the rock mass，connected state，equivalent parameters，the qualitative and quantitative methods are used to determine the overall and local stability of dangerous rock mass，buckling mode，and the corresponding control measures are put forward. It has certain guiding significance to the giant dangerous rock evaluation idea and the prevention measures.

Key words： rock mechanics Yarlung Zangbo River giant unstable rock mass basic features stability evaluation prevention measures

Received: 26 May 2013

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https://rockmech.whrsm.ac.cn/EN/Y2014/V33/Isl/2635

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