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在饱和黄土地区高速铁路隧道施工过程中,常常出现开挖困难、初期支护沉降大、基底软化等问题。本文通过对黄土简析,以兰新铁路福川隧道乎兰大板斜井工程实例分析,就饱和黄土地区高速铁路隧道施工过程中出现的问题进行了相关探究。对于开挖面出水情况进行了分析,提出来了相关策略。最后,还提出了黄土隧道施工过程中可能出现的问题,以及相关的注意事项和处理措施。
In the process of tunnel construction of saturated high-speed railway in saturated loess area, the problems of excavation difficulty, initial support settlement and base softening often occur. Based on the analysis of loess, the paper analyzes the problems of the high speed railway tunnel construction in saturated loess area through the case analysis of Hualan tunnel in Lanchuang railway. The excavation surface water situation has been analyzed, put forward the relevant strategies. Finally, some problems that may appear in the process of construction of loess tunnel, as well as the relevant precautions and measures are also proposed.