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1、工程概况古田隧道工程地处福建省古田县境内,该地区曾有6级地震发生;本工程围岩为火山岩,口部段围岩为Ⅲ级,主体围岩为Ⅱ级,局部破碎段为Ⅲ级,工程口部处局部为Ⅳ。工程轴线总长2057.03米,其中:主洞总长1547.527米,支洞总长398.283米,斜井总长111.22米;工程有四个口部,考虑
1. Project Overview The Gutian Tunnel Project is located in Gutian County, Fujian Province. There were 6 earthquakes in this area. The surrounding rock of this project is volcanic rock, the surrounding rock of the mouth section is Grade III, the surrounding rock of the main body is Grade II, partial crushing section For the Ⅲ level, the engineering department at the mouth for the IV. The total length of 2057.03 meters project axis, of which: the main hole total length of 1547.527 meters, branch hole length 398.283 meters, shaft length 111.22 meters; project has four mouths, consider