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HIGHLY SUCCESSFUL GROUND SUPPORT FOR HIGH COVER: A CASE STUDY OF THE WEST QINLING RAIL TUNNELS

机译:高封面的高度成功地面支持:西秦岭铁路隧道的案例研究

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China’s West Qinling Rail Tunnels, located in the remote Qilian Mountains, are being excavated under high cover of at least 1,000 m for the entire length of the bored tunnel drives. To combat difficult ground conditions including limestone and phyllite with fault zones, a unique system of ground support has been designed. Two 10.2 m diameter Main Beam TBMs were engineered around the concept of these versatile support systems, which allow a variety of types of support to be installed in varying conditions. The design of the system and performance will be discussed, along with an analysis of the machines’ world record advance rates and lessons learned. Applications of this type of ground support system on future projects will also be covered.
机译:中国的秦岭铁路隧道位于偏僻的祁连山,在钻孔隧道驱动器的整个长度的高封面下挖掘出至少1000米。为了对抗具有破坏区域的难以应对石灰石和Phyllite的困难地,设计了一个独特的地面支持系统。两种10.2米直径的主束TBMS围绕这些多功能支撑系统的概念设计,这允许在不同的条件下安装各种类型的支撑。系统和性能的设计将讨论,以及对机器的世界录制提前率和经验教训的分析。此类地面支持系统对未来项目的应用也将涵盖。

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