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基于FLAC^(3D)的复杂堆积体稳定性分析及其治理研究——以贵州都匀—安顺高速公路摆拢大桥堆积体为例     被引量:2

Stability analysis and treatment of complex accumulation body based on FLAC^(3D)--Taking the accumulation body of the Bai Long Bridge on the Duyun-Anshun Expressway in Guizhou as an example

文献类型:期刊文献

中文题名:基于FLAC^(3D)的复杂堆积体稳定性分析及其治理研究——以贵州都匀—安顺高速公路摆拢大桥堆积体为例

英文题名:Stability analysis and treatment of complex accumulation body based on FLAC^(3D)--Taking the accumulation body of the Bai Long Bridge on the Duyun-Anshun Expressway in Guizhou as an example

作者:许源华 贺太红 谢配红 龙维 邬忠虎 刘品

第一作者:许源华

机构:[1]贵州理工学院资源与环境工程学院,贵州贵阳550003;[2]贵州省地质矿产勘查开发局114地质大队,贵州遵义563000;[3]贵州省地质矿产勘查开发局106地质大队,贵州遵义563001;[4]贵州大学土木工程学院,贵州贵阳550025;[5]贵州省交通规划勘察设计研究院股份有限公司,贵州贵阳550081

第一机构:贵州理工学院资源与环境工程学院

年份:2024

卷号:31

期号:5

起止页码:112-121

中文期刊名:安全与环境工程

外文期刊名:Safety and Environmental Engineering

收录:CSTPCD;;北大核心:【北大核心2023】;CSCD:【CSCD_E2023_2024】;

基金:国家自然科学基金项目(52104080)。

语种:中文

中文关键词:复杂堆积体;稳定性分析;治理方案;FLAC^(3D)软件;数值模拟

外文关键词:complex accumulation body;stability analysis;treatment scheme;FLAC^(3D) software;numerical simulation

摘要:对于受三维空间分布的不利构造影响、多种地层错综分布的复杂堆积体,难以将其简化为简单结构的模型进行理论计算。为解决复杂堆积体的稳定性计算问题,利用FLAC^(3D)软件构建三维地质模型,根据贵州都匀—安顺高速公路摆拢大桥堆积体工程特性对其进行分区赋值、联合计算,对复杂堆积体的变形破坏机理和稳定性进行分析,并提出治理方案。结果表明:本文方法可以直观地模拟堆积体的变形破坏特点,数值模拟结果显示堆积体滑坡位移较大的区域分布在2区、3区,堆积体滑坡从2区向后牵引1区,形成整体滑移;提出的“路线局部绕避+工程支挡”的路线比选方案更加合理、有效、经济。研究结果可为复杂堆积体的稳定性分析和治理方案的制定提供参考。
For complex accumulations with unfavorable structures distributed in three-dimensional space and multiple strata distribution,it is difficult to simplify them into a simple abstract model for theoretical calculation.In order to solve the stability problem of complex accumulations,using FLAC^(3D) software to build 3D geological models,according to the engineering characteristics of the accumulation body of the BaiLong Bridge on the Duyun—Anshun Expressway in Guizhou,partition assignment,joint calculation,the deformation and failure mechanism and stability of complex accumulation body were analyzed.The results show that,this method can directly simulate the deformation and failure characteristics of the accumulation body.The numerical simulation results show that the large displacement area of the landslide is distributed in Zone 2 and Zone 3,and the landslide of the accumulation body pulls back from Zone 2 to Zone 1,forming a whole slip.The proposed route selection scheme of“route local circumvention+engineering support”is more effective,reasonable and economical.The research results can provide reference for stability analysis of complex accumulation body and the formulation of treatment scheme.

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