This paper proposes a new type of tunnel anti-collapse excavation device and corresponding construction technology in a pleated shale environment.Firstly,the characteristics and reasons of tunnel collapse risk in pleated shale environments are analyzed;then,the structure,working principle,construction technology,and measures of the new excavation device are introduced;finally,taking the E763 highway project in Serbia as an example,the application effect of the new excavation device and construction technology in practical engineering is verified.
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