开挖方案对洞群围岩稳定性的影响研究  

Effects of excavation scheme on adjoining stability of rocks surrounding tunnels

作　　者：穆创国[1] 张宏[1] 夏浩军[1] 

机构地区：[1]杨凌职业技术学院水利系,陕西杨凌712100

出　　处：《西北农林科技大学学报（自然科学版）》2004年第B11期139-144,共6页Journal of Northwest A&F University(Natural Science Edition)

摘　　要：应用ANASYS对紫坪铺水利工程4条引水隧洞拟定的3种开挖顺序进行了模拟施工过程的非线性有限元仿真分析。通过分析计算,探讨了引水隧洞施工期围岩稳定性与支护结构安全性的相互影响,评价了各个支护手段的支护效果,得出了合理的施工开挖程序。In this paper, based on ANSYS software, a nonlinear finite element numerical approach is developed to assess three different excavating orders for four diversion tunnels in Zipingpu irrigation works. By numerical simulation and discussion,the stability of rocks and the safety of support structure in four tunnels are forecasted, and comparisons are made to evaluate the effect of different support methods, and then a reasonable excavation method is presented.

关 键 词：紫坪铺工程 引水发电洞 数值模拟 开挖方案 围岩稳定研究 喷射混凝土衬砌 锚杆 

分 类 号：TV672.1[水利工程—水利水电工程] U455.4[建筑科学—桥梁与隧道工程]