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.
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。
The result indicates that the CRD method is the proper construction method on this condition and gives the proper distance between the second lining and the excavation face.
结果表明，CRD法是该级围岩条件下的合理工法，同时给出了二次衬砌应滞后掌子面的合理距离。
Before constructing, the simulated analysis had been done with the finite element software to ensure its safety, and the results indicates that it is feasible to adopt CRD method in the construction.
为确保安全，施工前利用有限元软件进行了模拟分析，表明采用CRD法施工是可行的。
Finally, the construction plans of the double-arch tunnel without middle-wall are compared, that is, two construction process engineering methods of CRD construction method are compared.
最后，对无中墙连拱隧道的施工方案进行了比选，即对交叉中隔壁工法的两种施工工序进行比较分析。
Finally, the construction plans of the double-arch tunnel without middle-wall are compared, that is, two construction process engineering methods of CRD construction method are compared.
最后，对无中墙连拱隧道的施工方案进行了比选，即对交叉中隔壁工法的两种施工工序进行比较分析。
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