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Schlossberg隧道长830m,基底宽11m,高7m。隧道大部分位于完整而具有中等结晶粒状、石英含量60％的“黑林”类花岗岩中,仅两端洞门段的花岗岩上面有3～7m厚的风化层,它的底层已侵入隧道拱顶。 在深埋地段,采用台阶法施工,其目的是减少开挖。实际达到的超欠挖值,最大为30～35cm,平均值
Schlossberg tunnel length 830m, the base width of 11m, height 7m. Most of the tunnels are located in a complete “black forest” type of granite with medium grain size and 60% quartz content. Only three-to-7-m thick layers of granite have been formed on the granite at both ends of the tunnel. . In the deep lot, the use of step construction, the purpose is to reduce excavation. The actual value of over-under-digging, the maximum of 30 ~ 35cm, the average