阿尔塔什深厚覆盖层上高面板砂砾石堆石坝坝体变形控制设计

阿尔塔什水利枢纽工程大坝是建于深厚覆盖层上的高面板砂砾石堆石坝。坝址处于高地震烈度区,大坝的变形控制问题尤为突出。工程设计从合理选择筑坝材料、优化坝体分区、提高各料区压实密度、有效控制填筑顺序和施工工艺等方面确定了坝体变形控制措施,以减小面板浇筑后的坝体变形以及坝体不同分区间的不均匀变形,为控制坝体变形设计提供参考。

Design of deformation control on high concrete face sandy gravel-rockfill dam built on Aertashi deep overburden

The dam for Aertashi Water Control Project is a high concrete face sandy gravel-rockfill dam built on deep overburden. The dam site is located within a region with high seismic intensity， and then the problem from the deformation control of the dam is quite obvious. In the engineering design， the dam deformation control measures are determined in the aspects such as reasonably selecting the dam construction materials， optimizing the dam zoning， enhancing the compacted densities of all the material zones， effectively controlling both the filling sequence and the construction technology， etc.， so as to reduce the dam body deformation after the placement of the face slab and the non-uniform deformations in between different sub-zones of the dam， thus provide references for the design of the dam deformation control.