研究目的:郑州至西安客运专线是我国第一条整线采用改进的旭普林双块式无砟轨道的长大线路,无砟轨道对于基础的沉降要求非常严格。而我国目前对黄土隧道沉降问题,是一个空白,国内外都没有成熟的经验可借鉴。对于隧道基础沉降评估,更是没有先例。本文通过对郑西客运专线隧道评估的分析探讨,提出完善隧道基础沉降评估的程序,总结出隧道沉降的部分规律。

Research purposes:Zhengzhou-Xia' n PassengerDedicated Line is the first long railway line adopting the modified Zueblin slab track with bi-block sleepers on the whole line in China, whereas the slab track requires less subsidence for its foundation. However, for the subsidence of loess tunnels, there is nomature experience for reference athome and abroad and for the assessmentof tunnel foundation subsidence, even no example is available before. This paper attempts to improve the assessmentprocedure and summarize some laws of the tunnel foundation subsidence based on the analysis and study on the tunnel assessment forZhengzhou-Xia' n PassengerDedicated Line.