基于GeoStudio的花岗岩残积土边坡稳定性分析——以广东省五华县龙村镇为例
Stability analysis of granite residual soil slope based on GeoStudio:a case study of Longcun Town,Wuhua County,Guangdong Province
陈雪峰 1洪庆仁 1张族坤 2梅伟标1
作者信息
- 1. 广东省地质灾害应急抢险技术中心,广东 广州 510080
- 2. 广东省地质工程公司,广东 广州 510080
- 折叠
摘要
广东省五华县龙村镇地处低山丘陵区,花岗岩残积土分布广泛,人类工程活动强烈,存在大量的人工边坡.本文采用GeoStudio数值分析软件,模拟不同降雨和削坡条件对龙村镇花岗岩残积土边坡稳定性的影响.结果表明:在边坡高度一定的情况下,削坡坡度越大,边坡的稳定系数越小,边坡越容易滑塌;在坡度相同的情况下,边坡高度越大,边坡的稳定系数越小,边坡越不稳定;边坡高度对边坡稳定性产生的影响要大于边坡坡度对边坡稳定性的影响;短时特大暴雨相比持续强降雨对边坡稳定性影响更大,降雨对边坡稳定性的影响具持续性和滞后性的特点.研究结果可为粤东地区花岗岩残积土边坡地质灾害防治工作提供参考依据.
Abstract
Longcun Town,Wuhua County,Guangdong Province,is located in a low hilly land,where granite residual soils are widely distributed,human engineering activities are strong,and there are a lot of artificial slopes.In this paper,GeoStudio numerical analysis software is used to simulate the influence of different rainfall and slope-cutting conditions on the stability of granite residual soil slopes in Longcun Town.The results show that under the condition of a certain slope height,the larger the slope gradient is,the smaller the stability coefficient of the slope is,and the easier to collapse;under the condition of the same slope gradient,the larger the slope height is,the smaller the stability coefficient of the slope is,and the more unstable the slope is;the impact of the slope height on the slope stability is greater than that of the slope gradient;the impact of a short-term exceptionally heavy rainfall is greater than that of a continuous heavy rainfall on slope stability;the impact of rainfall on slope stability is characterized by persistent and lagging.The results of the study can provide a reference for the geological hazard prevention and contral of granite residual soil slope in east Guangdong.
关键词
数值模拟/GeoStudio/边坡稳定性/五华县Key words
numerical simulation/GeoStudio/slope stability/Wuhua County引用本文复制引用
出版年
2024
NETL
NSTL
万方数据