枕头坝一级水电站导流工程规划与设计

Planning and design of diversion works for construction of Zhentouba I Hydropower Station

枕头坝一级水电站采用明渠方式导流。该导流明渠基础局部位于深厚覆盖层上,基础处理难度大,其纵向混凝土导墙基础部位采用梳齿状(框格状)钢筋混凝土连续墙进行处理。明渠导流工程的规划与设计成功避开移民搬迁的难题;同时导流明渠与大坝泄洪闸坝段合理结合,即优化了布置,又为工程提供混凝土骨料料源,减少了料场开采,利于环保。实践证明,枕头坝一级水电站导流工程的规划与设计是成功的,为工程的顺利建设创造良好条件,同时为本流域其他下游梯级水电站的导流工程设计提供了很好的借鉴。

For Zhentouba I Hydropower Station, the mode of diversion with open-channel is adopted. The foundation of the open- diversion channel is locally on a deep-overburden with a large difficulty of foundation treatment, and then the foundation of its longitudinal concrete guide-wall is treated with a reinforcedconcrete continuous wall of comb-teeth type （cellular type）. The plan- ning and design of the open-channel diversion project successfully avoids the problems from the resettlement concerned, while the diversion open-channel is reasonably integrated with the section of the flood discharge gate of the dam; from which, not only the layout is optimized, but a source of the aggregate material of concrete is also provided for the construction of the project and thus the quarry mining is reduced for being favorable to the environment protection. The practice shows that the planning and design of the open-channel diversion project is successful, i.e. creating a better condition for the smooth construction of the project and simultaneously providing an excellent reference for the designs of the diversion works for the other cascade hydropower stations within the basin.