介绍东秦岭特长隧道工程正洞及平行导坑的设计标准、施工技术要点。
Design code and key technical points for main tunnel and parallel heading of East Qinling Super-long Tunnel are introduced.
从总体上分析结果可知，双侧壁导坑法更适合于双向八车道连拱隧道施工。
It can be concluded that from overall analysis the double-side-drift method is more suitable than the CRD method in multiple-arch tunnel with eight traffic lanes.
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