Exploration of Excavation Technology for Large-span Tunnels in Loess Areas
Baihe Tunnel of Lintao(Anjiazui)-Linxia first-class highway is Grade V surrounding rock,mainly including loess shallow buried section,rocky section,loess deep buried section,small clearance section and loess deep buried section.According to different surrounding rock conditions and geological conditions,CD method,upper and lower benches retaining core soil method and three bench step-by-step method are targeted for excavation.
shallow buried loess sectionsmall clear distance tunnelCD methodcore soil method for retaining upper and lower stepsthree step step-by-step method
万方数据
维普
