基于FLAC3D隧区突水涌泥预测研究  

Mud Flow Prediction During the Tunnel Excavation Using FLAC3D

作　　者：赵敏[1] 孙勇[1] 王紫旭[1] 

机构地区：[1]贵州大学喀斯特环境与地质灾害重点实验室,贵阳5500025

出　　处：《土工基础》2017年第5期617-622,共6页Soil Engineering and Foundation

摘　　要：模型试验对围岩的应力变化、位移场和岩溶管道的渗流场、位移场、应力场等信息的表达不够全面,需要通过三维数值模拟来分析岩溶管道内充填介质的渗透突水涌泥机理和前兆规律。通过FLAC3D有限差分软件分析隧道突水涌泥致灾机理和一般规律,进一步加强对这方面的认识和研究。Physical model tests usually could only monitor several key points in the tunnel excavation.The three-dimensional numerical analysis can effectively simulate the entire stress and strain change in the surrounding rock mass,the seepage field in the karst rock solution channels.The groundwater and mud rush through the fill media of karstic bedrock during the tunnel excavation are analyzed in this paper.

关 键 词：突水涌泥 FLAC3D有限差分 压力变化趋势 

分 类 号：U457[建筑科学—桥梁与隧道工程]