[1]薛 秀,李 凯,黄秋香*,等.水库蓄水初期库岸边坡变形特征[J].山地学报,2016,(03):323-330.[doi:10.16089/j.cnki.1008-2786.000135]
　XUE Xiu,LI Kai,HUANG Qiuxiang,et al.Deformation Characteristics of Reservoir Slopes in the Initial Impoundment Period[J].Mountain Research,2016,(03):323-330.[doi:10.16089/j.cnki.1008-2786.000135]
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水库蓄水初期库岸边坡变形特征()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2016年03期
页码:
323-330
栏目:
山地灾害
出版日期:
2016-06-01

文章信息/Info

Title:
Deformation Characteristics of Reservoir Slopes in the Initial Impoundment Period
文章编号:
1008-2786-(2016)3-323-08
作者:
薛 秀; 李 凯; 黄秋香*; 徐 博
成都理工大学/地质灾害防治与地质环境保护国家重点实验室, 四川 成都 610059
Author(s):
XUE Xiu;  LI Kai;  HUANG Qiuxiang;  XU Bo
State Key Lab. of Geo-hazard Prevention and Geo-environment Protection / Chengdu University of Technology, Chengdu 610059, China
关键词:
水库蓄水;  库岸边坡;  变形特征;  稳定性
Keywords:
reservoir filling;  reservoir slopes;  deformation characteristic;  stability
分类号:
P642.2
DOI:
10.16089/j.cnki.1008-2786.000135
文献标志码:
A
摘要:
为研究水库蓄水过程中库岸边坡的变形特征,以雅砻江某水电站库岸边坡为例,充分利用第一手监测资料进行变形分析,另外再结合Geo-Studio程序(Slope/W和Seep/W耦合)对边坡地下水渗流情况及稳定性进行计算,结果表明:库水位上升初期,库水向坡体由表及里、由前缘向后缘入渗,坡体变形滞后于库水位变化; 随着库水位快速上升,库水来不及入渗到坡体内部,故先是库水对坡脚的压重起主要作用,坡体稳定性增大,后期库水入渗到坡体后,库水对岸坡岩土体力学参数弱化起主要作用,稳定性降低; 在整个蓄水过程中,坡体变形以蠕变为主。结合数值模拟和变形分析可知,蓄水会导致研究区稳定性降低,但该变化在允许变形范围内,边坡最终仍处于稳定状态。
Abstract:
With the rise of groundwater level, the stress field of reservoir slopes will adjust during reservoir filling. Coupled with the weakening role of water in the rock mass slopes, the slope may slide. To research on the deformation characteristics of reservoir slopes during reservoir filling, in this paper, a reservoir slope of large hydro-power station on the Yalong River in western Sichuan of China was discussed here. It used firsthand monitoring data in the region to analyze the deformation characteristics of the reservoir slopes, and combined the Geo-Studio(Slope/W & Seep/W)to analyze ground-water seepage and slope stability. It turned out that reservoir water infiltration in to the slope was a process from its out to core, from the leading edge to the rear in early days, so the deformation of reservoir slopes had lagged behind the reservoir water level. As the reservoir level rose, there wasn't enough time to infiltrate into the slopes,so weights of reservoir level at the foot of slope increased the factor of safety.When water infiltrated into the slopes,the weakening action of water decreased the factor of safety. The slope kept creep during this process. Numerical simulation and deformation analysis showed that water storage can reduce stability of slope. However, its deformation should be controlled within tolerances and was still in a stable state.

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备注/Memo

备注/Memo:
收稿日期(Received date):2015-04-28; 改回日期(Accepted):2015-06 -10。
基金项目(Foundation item):国家自然科学基金4140020411。[Supported by the National Natural Science Foundation of China(4140020411).]
作者简介(Biography):薛秀(1988-),女(汉),籍贯山西省,硕士研究生,专业方向为岩土体稳定及工程环境效应。[Xue Xiu(1989-), female(Han), born in Shanxi, mastel candidate, majored in rock and soil stability and environmental effects of the project.]
*通信作者(Corresponding author):黄秋香(Huang Qiuxiang).E-mail:lengjiao@sohu.com
更新日期/Last Update: 2016-05-30