湿陷性黄土区半填半挖路基水害整治及设计建议

Suggestions for the Renovation and Design of Water Damage of Part-Cut-Part Filled Subgrade in Collapsible Loess Area

在湿陷性黄土地区修建半填半挖路基,基底处理、路基结构早有成熟技术和经验。但在半干旱的少雨地区,偶遇持久暴雨时,在个别区段路堤侧边坡发生了垮塌等病害,分析水害形成原因,提出整治措施方案、施工注意要点以及设计建议,避免小细节酿成大灾祸,对于类似地区路基设计、施工,确保铁路运营安全,具有重要意义。

There are plenty of mature technology and experience for constructing part cut-part fill subgrade roadbed in the collapsible loess region as well as for its corresponding base treatment and roadbed structure. But in semi-arid areas, the side slope of embankment collapse happened in some sections caught in disasters like persistent heavy rains. Therefore, it is of significance to analyze the causes of water disasters, propose measures, construction key points and the design proposal so as to avoid unnecessary deadly disaster. The above-mentioned suggestions are also useful in roadbed design and construction of similar area, which can ensure the safety of the railway.