[1]卿 菁,朱 蕾,陈 昊,等. 库水位波动与降雨作用下的滑坡流固耦合分析[J].湖北工业大学学报,2021,(4):52-56+84.
 QING Jing,ZHU Lei,CHEN Hao,et al. Fluid-solid Coupling Analysis of Landslide under Fluctuation of Reservoir Water Level and Rainfall[J].,2021,(4):52-56+84.
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 库水位波动与降雨作用下的滑坡流固耦合分析()
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《湖北工业大学学报》[ISSN:1003-4684/CN:42-1752/Z]

卷:
期数:
2021年第4期
页码:
52-56+84
栏目:
湖北工业大学学报
出版日期:
2021-08-26

文章信息/Info

Title:
 Fluid-solid Coupling Analysis of Landslide under Fluctuation of Reservoir Water Level and Rainfall
文章编号:
1003-4684(2021)04-0052-05
作者:
 卿 菁 朱 蕾 陈 昊 谢 鹏
 湖北工业大学土木建筑与环境学院, 湖北 武汉 430068
Author(s):
 QING JingZHU LeiCHEN HaoXIE Peng
 School of Civil Engin., Architecture and Environment, Hubei Univ.of Tech.,Wuhan 430068, China)
关键词:
 滑坡 稳定性 降雨 库水位 流固耦合
Keywords:
 landslide stability rainfall reservoir water level fluid solid coupling
分类号:
TU43
文献标志码:
A
摘要:
 库区水位周期性涨落将改变两岸土体地质条件,在联合降雨组合作用下,容易诱发滑体变形,极大程度地影响了滑坡的稳定性。以三峡库区卢家沱滑坡为例,针对滑体剖面二维模型,采用Geo-Studio软件模拟了不同库水位与降雨组合的滑坡稳定性分布情况;同时根据有限元软件Abaqus建立三维模型进行流固耦合作用分析。结果表明:在水库水位下降及降雨条件联合作用下,遭遇最不利工况时,滑坡将加剧变形,整体位移加大,存在局部失稳的可能,但由于滑坡前缘土体为中[CD*2/3]强透水,利于地下水渗出,滑坡整体位移变化较小,未观察到塑性贯通区,可以确定卢家沱滑坡在不同工况条件下仍处于基本稳定状态。
Abstract:
 The periodic fluctuation of water level in the reservoir area will change the geological conditions of the soil on both sides of the bank. Under the combined action of rainfall, it is easy to induce the deformation of sliding mass and greatly affect the stability of landslide. In this paper, taking Lujiatuo landslide in the Three Gorges Reservoir Area as an example, according to the two-dimensional models of landslide profile, geo Studio software is used to simulate the landslide stability distribution of different combinations of reservoir water level and rainfall; at the same time, a three-dimensional model is established according to the finite element software ABAQUS to analyze the fluid solid interaction. The results show that: under the combined action of reservoir water level drop and rainfall conditions, the landslide will aggravate the deformation, and increase the overall displacement. There is the possibility of local instability when encountering the most unfavorable working conditions. However, because the soil mass at the front edge of the landslide is medium strong permeable, which is conducive to groundwater seepage, the overall displacement of the landslide changes little, and no plastic through zone is observed. It is still in a stable state.

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备注/Memo

备注/Memo:
[收稿日期] 2020-11-10
[基金项目] 国家自然科学基金(41372363,41641027);三峡后续工作地质灾害防治项目(0001212015CC60005);湖北省科技厅自然科学基金(2017ACA188)
[第一作者] 卿 菁(1996-), 女, 湖南永州人,湖北工业大学硕士研究生,研究方向为岩土力学理论的工程应用
更新日期/Last Update: 2021-08-27