高速铁路隧道穿越黄河方案研究

大同至西安高速铁路穿越黄河地段,规划隧道全长20 949 m,为双洞单线隧道,拟采肜泥水加压盾构法和矿山法分别进行掘进施工.详细介绍了黄河地区的地质情况及及工程总体设计思路,具体阐述了盾构段、暗挖段、明挖段、工作井的结构设计,并重点交代了隧道拟采用的"站台+两侧救援通道+竖井"防火救援方案.虽然此方案最终因造价等原因未...

Study of the Scheme of the High-Speed Railway Tunnel Under-Crossing the Yellow River

Since the Datong-Xi＇an High-speed Railway has to under-cross the Yellow River,the total length of the planned tunnel is 20 949m,which is a single-lined,double-holed tunnel,and is planned to be dug respectively by means of the slurry shield method and the mining method.The geological conditions of and the overall engineering design thinking ways for the Yellow River regions are dealt with in detail in the paper,with the structural designs for the shielded sections,under-cut sections,open-cut sections and work shafts specifically introduced and emphasis placed on the introduction to the anti-disaster rescue scheme of platform ＋ two-sided rescue passages ＋ shaft to be used for the tunnel.Although this scheme was not employed in the end because of the construction cost,the research thinking ways mentioned in the paper may serve as a useful reference for the construction of other tunnel projects under similar geological conditions.