一座水库坝基地质特征及大坝坝型比选分析

Analysis on the Geologic Feature of the Dam Foundation and Selecting the Dam Type for a Ceratin Reservoir

通过对水库大坝坝基的地质勘察,查明坝址区的地层岩性、地质构造、水文地质条件,针对坝址区的地形地貌、坝基地层的空间展布以及存在的不良地质现象,结合坝址区建坝材料的物理力学特性,对重力坝、土坝、面板堆石坝三种坝型进行了地质角度的分析比选,列出了各自的优劣,并提出了较为合理的建议。

By means of geologic exploration for the dam foundation of a certain reservoir,the lithologic character of strata,geologic structure and hydrogeology conditions of this foundation have been ascertained. In view of topograph and geomorphology situations of the dam site region,the space distribution of dam foundation strata and the existing poor geologic appearance,moreover,in combination with the physical and mechanical properties of dam-constructing material in the dam site region,three dam types including the gravity dam,the earth dam and the facing rockfill dam are analyzed and selected from geologic aspects,the advantage and disadvantage of every dam type are listed,so that the reasonable suggestions are put forward.