摘要
滑坡是最普遍的地质灾害之一,对边坡的稳定性进行准确分析,并制定相关防治方案显得尤为重要。由于受实际地形边界的影响,采用二维分析往往不能准确评估其真实的稳定状态。以云南腾冲机场滑坡为例,基于实际地形、地层分布、岩土体与滑面参数及填筑方案建立了精细的三维地质模型。基于三维有限差分软件,并充分考虑滑坡填筑前后滑移方向的变化和滑坡体周围岩土体提供的侧阻力,模拟分析滑坡在不同工况下以及不同处理方案下的稳定性,经过对比选出合理的削方方案,可为类似滑坡区填削方工程的稳定性分析与治理提供了参考。
Landslide,as a most frequently encountered geo-hazard,is critical to the accurate analysis of slope stability and to the geohazard prevention and mitigations.The conventional two-dimensional analysis methods could usually not to reflect the on-site stability status due to the actual topographical boundary constraints.This paper presents a refined three-dimensional numerical finite difference geological model by considering the actual topographic conditions,soil strata distribution,soil rock mass shear strength parameters as well as the construction sequence.The numerical model also considers the change of sliding direction and the side resistance surrounding the sliding body.The stability of the proposed soil/rock mass under different loading conditions and different improvement methods are evaluated and the optimized improvement method is therefore selected.
作者
赵亮
彭君
ZHAO Liang;PENG Jun(Civil Aviation Central South Airport Design Co.Ltd.,Guangzhou 510405)
出处
《土工基础》
2022年第3期327-330,334,共5页
Soil Engineering and Foundation
关键词
滑坡
稳定性
削方
有限差分法
landslide
slope stability
slope cut
finite difference methods
