水平层状围岩隧道锚喷支护参数优化试验研究  

Experimental study on bolt-shotcrete parameter optimization of tunnel in horizontal layered surrounding rock masses

作　　者：钟放平 

机构地区：[1]湖南省常吉高速公路建设开发有限公司,湖南常德415100

出　　处：《铁道科学与工程学报》2008年第1期59-63,共5页Journal of Railway Science and Engineering

基　　金：湖南省交通科技项目(200436)

摘　　要：基于水平层状围岩结构特征,提出层状围岩中隧道开挖支护优化工况,进行桐木湾隧道锚喷支护参数优化对比现场试验和数值模拟分析,根据现场测试和数值模拟结果,分析了锚喷支护参数优化前后的锚杆受力和围岩变形特征。研究结果表明,水平层状围岩隧道锚喷支护参数优化工况可行,可为类似条件下隧道支护的设计与施工参考。Based on the structural behaviors of horizontal layered rockmasses, an optimization scheme of tunnel support was proposed. Field tests were conducted in Tongmuwan Tunnel of horizontal layered surrounding rock, and numerical simulation was also carried out. On the basis of field observations and numerical simulation results, mechanical behav- iors and deformation of surrounding rock were contrastively analyzed before and after optimization of bolt - shotcrete support. The result shows that the optimization scheme of tunnel support in horizontal layered surrounding rock is feasible, and can provide a reference for similar geological conditions.

关 键 词：水平层状围岩 ABAQUS 优化 锚啧支护 

分 类 号：U451[建筑科学—桥梁与隧道工程]