摘要
隧道的不同开挖顺序对围岩的变形及后续支护工作具有重要的影响,但由于隧道开挖顺序主要依赖于工程类比和现场量测设计方法,不能很好地选出合理的开挖方案。应用FLAC3D对大湾沟隧道不同开挖顺序进行模拟,通过综合分析不同开挖顺序的隧道围岩位移、塑性区、围岩应力等指标,从而确定大湾沟隧道开挖顺序的最佳方案。
The tunnel excavation sequence has important impacts on the deformation of the surrounding rock mass and the latersupporting procedure. This is especially true for the rock mass classified as IV and V. However, the analogy and in-situ surveyare the major ways to determine the excavation sequence and the optimized excavation sequence is not usually selected. Thethree dimensional numerical analysis using FLAC3D is performed on the Dawangou Tunnel excavation which different sequencescan be simulated and the deformation of the surrounding rock mass, development of the plastic zones and the stress within therock mass can be compared so that an optimized excavation can be determined.
出处
《土工基础》
2014年第3期81-83,共3页
Soil Engineering and Foundation
关键词
隧道工程
开挖顺序
数值模拟
FLAC3D
Tunnel Engineering
Excavation Sequences
Numerical Analysis
FLAC3D
