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.
出处
《铁道科学与工程学报》
CAS
CSCD
北大核心
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)
关键词
水平层状围岩
ABAQUS
优化
锚啧支护
horizontal layered rock
ABAQUS
optimization
bolt - shotcrete support
