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.
出处
《资源环境与工程》
2009年第5期546-550,共5页
Resources Environment & Engineering
关键词
拱坝地质
稳定分析
影响因素
坝线选择
arch dam geological condition
stability analysis
impact factors
dam axis selection
