高速铁路对路基质量有着更为严格的要求,特别是在填料粒径及工后沉降方面。随着西北地区高速铁路的新建,如何改进路基施工工艺,利用好地区大量的戈壁土填筑高铁路基是施工的关键,通过在兰新铁路第二双线的施工,总结了戈壁土填筑中的关键技术及工艺,为西北地区类似的路基工程提供借鉴。 High-speed railway has more strict requirements on subgrade quality, especially in terms of particle size and post-construction settlement. With the new high-speed railway in Northwest China, how to improve the subgrade construction technology and make good use of a large amount of Gobi soil in the region to fill the high-speed railway embankment is the key to construction. Through the construction of the second double lane of Lan-Xin Railway, The key technologies and processes for the Northwest similar subgrade engineering to provide reference.