兰新铁路冻害原因分析及整治措施

Causes Analysis and Treatment Measures of Freezing Damage of Lanzhou-Xinjiang Railway

分析兰新铁路冻害的原因,提出了兰新铁路冻害分为道床冻害和路基冻害,道床冻害是由于外界黄土进入道床及翻浆冒泥而产生。通过室内试验数据,说明路基土的土质、含水率及温度是路基冻害的主要原因。阐述了兰新铁路冻害整治的思路及措施。

This paper analyzes the causes of freezing damage of Lanzhou-Xinjiang Railway and puts forward that such freezing damage is divided into roadbed damage and subgrade damage.Roadbed damage is produced by soil burst and inrush due to external loess entering roadbed.Through indoor test data,it is indicated that the quality,water content and temperature of subgrade soil are the main causes of subgrade freezing damage.Finally,this paper describes treatment concept and measures of freezing damage of Lanzhou-Xinjiang Railway.