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本文以西商高速公路堡子山隧道和小黄川隧道“零开挖”进洞方法为依托,通过洞口施工技术的总结,洞口环境调查,以及实际工程中根据地形、地质条件的不同,所采用的超前支护措施、洞口开挖方法,总结出了隧道洞口“零开挖”的最佳进洞施工方法。采用大管棚技术为基础,监控量测为保障,地质雷达超前预报为指导,保障了安全进洞,环保进洞,也真正实现了“零开挖”进洞。
Based on the “tunneling” method of Baozishan Tunnel and Xiao-Huang-Chuan Tunnel of West-Shang Freeway, this paper summarizes the tunneling technology, the tunnel environment investigation and the actual project according to the different topography and geological conditions Adopted advanced support measures, hole excavation method, summed up the tunnel entrance “zero excavation ” of the best hole construction method. The use of large pipe shed technology as the basis for monitoring and measurement as a guarantee, the advance prediction of geological radar as a guide to protect the safety of holes, environmental protection into the hole, but also truly achieved “zero excavation” hole.