小山水电站混凝土面板堆石坝设计

Design of the concrete face rockfill dam of Xiaoshan Hydropower Station

针对寒冷地区混凝土面板堆石坝设计与施工的特点，对防渗结构耐久性设计有如下要求：在水位变动区采用抚顺硅酸盐大坝５２５号水泥；混凝土抗冻标号为Ｄ３００（快冻）；抗压强度为Ｒ２８３００；抗渗ＳＳ。此外，还针对寒冷地区此种坝型垫层料与小区料选择及其设计标准，玄武岩地区趾板基础工程处理措施等问题进行了研究。

In accordance with the features of design and construction of the concrete rockfill dam in cold region, the requirements of the durability design for seepage control structures are as follows. In water level variation zone, the Fusun Portland cement of 525 grade should be adopted which will have a concrete frost-resistence label of D300 (quick freezing), compressive strength of R28300 and impermeability of S8, In addition, studies have also been conducted on the selection and design standards of bedding material and plot material for one dam in cold region, and the treatement measures of toe slab foundation engineering in the basalt region.