CAJ | 학술논문

新寨隧道位于西秦岭褶皱系中,节理裂隙发育,岩体破碎,围岩主要以志留系碳质千枚岩为主。进口段位于滑坡左侧边缘,洞门左侧发育冲沟一条,最小埋深13～18 m,在此偏压、浅埋、软弱围岩的条件下施工难度大,特别是进洞施工安全风险高。以在建新寨隧道施工为依托,介绍了该隧道的施工方案及施工技术措施,总结得出一些处理类似问题的经验。
신채수도위우서진령습추계중,절리렬극발육,암체파쇄,위암주요이지류계탄질천매암위주。진구단위우활파좌측변연,동문좌측발육충구일조,최소매심13～18 m,재차편압、천매、연약위암적조건하시공난도대,특별시진동시공안전풍험고。이재건신채수도시공위의탁,개소료해수도적시공방안급시공기술조시,총결득출일사처리유사문제적경험。
Xinzhai Tunnel is located in the fold system of western Qinling Mountains, and the jointed and fractured sur-rounding rock, characterized by rock crushing, consists mainly of the Silurian carbonaceous phyllite. Import section is loca-ted at the left edge of the landslide, gully is formed at the portal with the minimum buried depth of 13 - 18m. The bias, shallow buried depth and weak surrounding rock causes great difficulties for construction, especially high security risk for tunneling. Based on the Xinzhai Tunnel under construction, the paper introduces the construction scheme and construction techniques and makes a summary of experience in dealing with similar issues.