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在多年冻土区修建铁路站场路基,打破了原来天然地表与外界的热力平衡,地下温度场将重新分布。利用测试仪器来获取测温变形数据,然后对数据进行处理,探讨站场路基的冻结和融化过程的规律,以及站场路基下温度场的变化规律。通过和普通宽度路基的对比分析,分析宽路基对路基下多年冻土的保护作用,并提出一些工程防治的建议。
In the permafrost region to build the railway station roadbed, breaking the original natural surface and the thermal balance of the outside world, the underground temperature field will be redistributed. The temperature and deformation data were obtained by using the testing equipment. Then the data were processed to discuss the regularity of freezing and thawing process of subgrade at station and the variation of temperature field under subgrade of station. Through the comparison with ordinary width subgrade, the paper analyzes the protective effect of wide subgrade on permafrost under subgrade, and puts forward some suggestions for project prevention and control.