基于ABAQUS流固耦合作用下的八字门滑坡变形预测分析  

Prediction analysis of Bazimen landslide deformation based on ABAQUS fluid-structure coupling

作　　者：袁乾博 李永辉 鲁朝林 肖诗荣[4] YUAN Qian-bo;LI Yong-hui;LU Chao-lin;XIAO Shi-rong

机构地区：[1]湖北省地质局武汉水文地质工程地质大队,湖北武汉430051 [2]资源与生态环境地质湖北省重点实验室,湖北武汉430051 [3]湖北省武汉地质环境监测保护站,湖北武汉430051 [4]三峡大学土木与建筑学院,湖北宜昌443000

出　　处：《东北水利水电》2025年第1期37-41,I0001,共6页Water Resources & Hydropower of Northeast China

摘　　要：针对八字门滑坡变形预测问题,本文结合三峡库区八字门滑坡地质资料,采用有限元软件ABAQUS建立二维模型,利用软件内置Monr-Coulomb模型处理弹塑性变形问题,并采用软件用户子程序实现库水压力荷载、孔压边界条件及降雨荷载设置并进行流固耦合作用分析,从渗流场、应力场、位移场、塑性区等方面数值模拟滑坡变形破坏过程,选取库水位快速周期性调度与区域性强降雨联合作用下的预测工况作为滑坡变形趋势预测数值分析工况,并对八字门滑坡稳定性做出合理的预测评价,同时为类似滑坡的预测预警提供借鉴作用。Based on the geological data of Bazimen landslide in the Three Gorges Reservoir Area,a two-dimensional model is established by using finite element software Abaqus.The inbuilt Monr-Coulomb model was used to deal with the elastoplastic deformation problem.The water pressure load,pore pressure boundary condition and rainfall load were set by the software user subroutine,and the fluid-structure coupling was analyzed.The process of landslide deformation and failure is numerically simulated from the aspects of seepage field,stress field,displacement field,plastic zone,etc.,and the predicted condition under the combined action of rapid periodic scheduling of reservoir water level and regional heavy rainfall is selected as the numerical analysis condition of landslide deformation trend prediction,and reasonable prediction and evaluation of landslide stability is made,and at the same time,it can provide reference for similar landslide prediction and early warning.

关 键 词：涉水滑坡 流固耦合 数值模拟 变形预测 

分 类 号：TV697.29[水利工程—水利水电工程] P642[天文地球—工程地质学]