铁路客运专线黄土不良地质隧道施工技术

Construction Techniques for Loess Adverse Geographical Tunnels in Railway PDL

黄土广泛分布于我国西部地区,其工程性质具有特殊性,随着西部地区大规模铁路建设,遇到的湿陷性黄土工程地质问题也越来越多,这些问题处理不当常会给施工和通车后的安全运营造成影响。结合郑西客运专线大断面铁路黄土隧道施工,介绍了黄土地区修建大跨度铁路隧道的开挖、支护、防排水等施工技术。

Loess is widely distributed in the western region of our country, with its special characteristics in the engineering. With the large-scale railway construction in the western region, there are more and more geographical problems in the collapsible loess engineering. The inappropriate treatment of these problems will influence the construction and the railway＇s safe operation. Combined with the large-sectional railway loess tunnel construction in Zhengzhou-Xi＇ an PDL, this paper introduces the construction techniques for large-span railway tunnels in the loess regions, including the excavation, support, prevention and drainage of water.