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由于我国工农业建设的飞跃发展,运营量增大,铁路标准的提高,以及修建铁路越来越走向山区,这样就将出现更长的隧道,所以总结一下长隧道勘测,有着重要的意义。一、长隧道工程地质勘测的经验体会1.长隧道多半是在越岭线出现,它是一个主要控制位置。故应该在较大面积内选择,才能免于返工。如成昆线穿过大凉山长6.4公里的沙木拉打隧道,不
Due to the rapid development of industry and agriculture in our country, the increase of operation volume, the improvement of railway standards, and the construction of railroads to mountain areas are becoming more and more frequent. This will result in a longer tunnel. Therefore, it is of great significance to summarize the long tunnel surveys. First, the experience of long tunnel engineering geological survey Experience 1. Long tunnel mostly appears in the Yue Ling line, it is a major control position. Therefore, it should be within a large area of choice, in order to avoid rework. As the Kunming line through the Daliangshan 6.4 km long sand pull to hit the tunnel, no