铁路黄土隧道施工要点及注意事项

On construction points of railway loess tunnels and precautions

通过对黄土的特性及对隧道施工的影响进行分析,从施工准备、洞口施工、开挖、初期支护、防排水、二次衬砌、附属洞室施工等方面对铁路黄土隧道施工要点进行了叙述,提出了施工中的注意事项。

Abstract： The paper analyzes the features of loess and its influence on the tunnel construction, and indicates the construction points for the rail- way loess tunnels from the construction preparation, the construction at entrance, the excavation, the primary support, the waterproof and drain- age, and the construction at the auxiliary caves, and points out the precautions during the construction.