摘要
半边街滑坡属于典型的降雨型堆积层滑坡,在降雨作用下产生了较大程度的变形破坏,仍在继续发展。对半边衔滑坡地质条件与破坏特征进行了调查与分析,阐述了滑坡的变形机制。建立基于有限元的滑坡数值模型,采用渗流-应力耦合分析方法,研究了不同降雨工况下滑坡的稳定性及渗流场、位移场演化特征。结果表明滑坡位移主要受控于渗流场变化,在连续数天的暴雨或大暴雨工况下,极有可能产生整体滑动。研究成果为今后此类滑坡的预警、治理工程提供重要的理论依据。
The Banbianjie landslide is a typical rainfall accumulation landslide,and continues to develop after significant deformations and damages.In this paper,the geological conditions and deformation characteristics of the landslide were investigated and analysed,and the landslide deformation mechanism was described.A typical profile of the landslide was selected to establish a numerical model based on finite elements.The GeoStudio software was used to carry out seepage-stress coupling analysis and calculation of the landslide,and the stability of the landslide and the evolution characteristics of seepage and displacement fields under different rainfall conditions were investigated.The research results provide an important theoretical basis for the early warning and management of such landslides in the future.
作者
郑志文
孙玄
ZHENG Zhiwen;SUN Xuan(Hubei Shenlong Geologic Engineering Reconnaissance and Survey Institute Co.Ltd.,Wuhan 430056,China)
出处
《科技和产业》
2024年第14期281-288,共8页
Science Technology and Industry
关键词
滑坡
降雨入渗
数值模拟
稳定性
渗流场
landslides
rainfall
numerical simulation
stability
seepage field
作者简介
郑志文(1991-),男,湖北孝感人,工程师,研究方向为工程地质勘查、地质环境调查、地质灾害防治;孙玄(1990-),男,湖北武汉人,工程师,研究方向为工程地质勘查、地质环境调查、地质灾害防治。
