软岩大跨隧道施工技术探讨

指出了软岩大跨隧道较多采用中壁法和双侧壁导坑法,介绍了在新羊石隧道中采用环形开挖预留核心土法,并采取了强支护、辅助施工方法、监控量测、快速施工、合理布距、动态管理等保证措施,以达到快速、安全、经济的施工效果.

Study on construction technology of soft rock long span tunnel

The author points out that the center diaphragms and the two side-wall pilot tunnel are mostly used in the soft rock long span tunnel,introduces the ring type excavation with conservation of core soil used in the new Yangshi tunnel,and uses the guarantee measures of the strong support,the assisting construction,the monitoring measurement,the rapid construction,the rational distribution and the dynamic management to achieve the rapid,safe,economic construction effect.