下泊水库工程坝址和坝型比选方案设计

Design of damsite and dam type comparison and selection plan in Xiabo Reservoir

下泊水库是固村河唯一的控制性调蓄工程。工程区的地形地质条件是决定坝址选择的关键因素,而坝址是确定坝型的基础。对比拟选的两个坝址,其工程地质条件无大的差异,对建坝无制约性因素。对坝型确立的几方面要素进行系统分析,对混凝土面板堆石坝、沥青混凝土心墙堆石坝及均质土坝三种坝型进行技术比较,确定三种坝型均满足建坝要求,从防渗性能、坝体结构稳定性、施工条件等方面综合比较之后,认为混凝土面板堆石坝更有优势。

Xiabo Reservoir is the only controllable regulation and control project in Gucun Village. Topography and geological conditions in the project area are key factors to determine the selection of damsite. Damsite is the foundation to determine dam type. Two proposed damsites are compared, the geological conditions of the project is not different greatly. There are no conditionality factors on dam construction. Factors in several aspects for dam type establishment are analyzed systematically. Three dam types are compared technically, including concrete faced rockfill dam, asphalt concrete core-wall roeldill dam and homogeneous earth dam. It is determined that tile three dam types meet the requirements on dam construction. It is believed that concrete faced rocldill dam has more advantages after comprehensive comparison in the aspects of seepage control performance, dam body structure stability, construction conditions, etc.