近岩层隧道洞口支护优化方案设计与试验分析  

Optimization Scheme Design and Test Analysis of Portal Support for Tunnel Near Rock Layer

作　　者：沈芙田 沈虹羊 SHEN Futian;SHEN Hongyang(Tiesiyuan(Hubei)Engineering Supervision Consulting Co.,Ltd.,Wuhan 430061,Hubei,China)

机构地区：[1]铁四院(湖北)工程监理咨询有限公司,湖北武汉430061

出　　处：《凿岩机械气动工具》2025年第4期77-79,共3页Rock Drilling Machinery & Pneumatic Tools

摘　　要：为提高近岩层隧道洞口支护安全性,文章基于封闭支护方案设计了隧道支护优化方案,并设置了观测点对原方案和改进方案进行对照试验。试验结果表明,改进后的方案对围岩变形的控制效果更好。In order to improve the safety of tunnel portal support near rock layer,the optimization scheme of tunnel support is designed based on the closed support scheme,and the observation points are set up to conduct comparative test for the original scheme and the improved scheme.The test results show that the improved scheme has better control effect on the deformation of surrounding rock.

关 键 词：隧道围岩 弹性变形 近岩层隧道 洞口支护 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]