Abstract
This paper explain the controllable factors of the application of the CRD method in the construction of an ultra-shallow, ultra-high section and large-span mined tunnel. And it also introduce the construction scheme of the application on the background of the Ou-Zhuang station air duct C of Guangzhou Metro line No.5. The practical application shows that the CRD method is not only an applicable method but also a necessary means for this kind of tunnel.
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