西安市李家河水库拱坝工程地质条件分析研究  

Analysis on Engineering Geological Conditions of the Arch Dam in Lijiahe Reservoir of Xi'an City

作　　者：徐铁铮[1] 濮声荣[1] 

机构地区：[1]水利部陕西水利电力勘测设计研究院,陕西西安710001

出　　处：《资源环境与工程》2009年第5期546-550,共5页Resources Environment & Engineering

摘　　要：李家河水库位于北秦岭中低山区,坝址区河流呈"S"型分布,河谷狭窄,坝基为燕山期花岗岩,坚硬,较完整,具备修建双曲拱坝的地形地质条件。影响拱坝稳定的主要地质问题是断裂特性及其组合,风化岩体特性和两坝肩山梁的厚度及其稳定性,合理选定坝轴线位置是本工程勘察重点之一。Lijiahe reservoir is located in the middle and low mountain area in the north of Qinling, the fiver at the dam site is distributed in S-shape, and the valley is narrow, the rock in the dam foundation is Yanshan Period granite, which is hard and more intact. The geographical and geological conditions are suitable for the double curvature arch dam construction. The main geological problems which have affect to the stability of arch dam are fracture characteristics, weathered rock characteristics and the thickness and the stability of ridge between two dam abutments, the reasonable selection of dam axis location is one of the priorities of the engineering investigation.

关 键 词：拱坝地质 稳定分析 影响因素 坝线选择 

分 类 号：TV642.4[水利工程—水利水电工程] P642[天文地球—工程地质学]