Response of a landslide to reservoir impoundment in model tests

被引：75

作者：

He, Chuncan ^{[1
,2
]}

Hu, Xinli ^{[1
]}

Tannant, Dwayne D. ^{[2
]}

Tan, Fulin ^{[1
]}

Zhang, Yuming ^{[1
]}

Zhang, Han ^{[1
]}

机构：

[1] China Univ Geosci, Fac Engn, Wuhan 430074, Hubei, Peoples R China

[2] Univ British Columbia, Sch Engn, Kelowna, BC V1V 1V7, Canada

来源：

ENGINEERING GEOLOGY | 2018年 / 247卷

基金：

中国国家自然科学基金;

关键词：

Reservoir landslide; Physical model test; Deformation process; Failure behavior; Slip surface; 3 GORGES RESERVOIR; RAPID DRAWDOWN; DEBRIS-FLOW; DEFORMATION; SLOPE; MECHANISM; FAILURE; STABILITY; PILES;

D O I：

10.1016/j.enggeo.2018.10.021

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Landslides are often induced or activated by reservoir impoundment within the reservoir area. In this paper, a physical model test was conducted and compared with another published test to investigate the deformation characteristics and failure behavior of a colluvial landslide for conditions with and without reservoir impoundment. The laboratory landslide model represented the lower part of a landslide in the Three Gorges Reservoir area. A thrust load was applied to represent the upper part of the landslide. The thrust load, surface deformation, pore water pressure, and soil pressure were recorded during the experiments. The results show that the effect of the reservoir impoundment reduces the time to failure of the landslide and the load causing the failure. As expected, when water submerged the lower part of the landslide, the shearing resistance was reduced. The slip surfaces and failure behavior of the landslide under the two conditions are different. The entire landslide mass slid along the contact between the colluvium and the bedrock under reservoir impoundment. However, without a reservoir, the landslide slides partially along this contact, and multiple slip surfaces through the colluvium.

引用

页码：84 / 93

页数：10

共 51 条

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