%0 Journal Article
%A HU Ya-yun
%A DENG Hua-feng
%A WAN Liang-peng
%A ZHOU Mei-ling
%T Optimization Design of the Slope Anchorage of Deep Discharge Tunnel Inlet of a Hydropower Station
%D 2016
%R 10.11988/ckyyb.20150214
%J Journal of Yangtze River Scientific Research Institute
%P 105-108
%V 33
%N 6
%X The excavation and unloading deformation stability of the deep discharge tunnel inlet  at a hydropower station were analyzed to optimize the anchorage angle using software ADINA in association with  the actual geological conditions and the actual needs of deformation control. Moreover, the reinforcement effect of the slope under different anchorage forces and angles  was analyzed. Results show that the reinforcement effect is the best when anchorage angle of depression is 20°, and   anchoring force is inversely proportional to the slope deformation. In this paper, prestressed anchor of 2 000 kN was used to control the cost. Besides, radial gate is adopted at the vertical segment of the excavated slope of deep discharge tunnel, so the deformation at this position needs to be stringently controlled to guarantee the gate’s normal operation. Anchorage force has  direct influence on the reinforcement effect. The research results offer reference for the anchorage design of high and steep slopes. <br/><br/>
%U http://ckyyb.crsri.cn/EN/10.11988/ckyyb.20150214