季冻区路基温-湿度场监测与变化规律研究

Study on the Monitoring and Change of Subgrade Temperature and Humidity Field in Seasonal Frozen Region

摘要: 建立了季冻区路基温-湿度场的监测方案，对路基内部的温-湿度场进行了监测与分析，研究了路基温-湿度场的分布规律及时变特性。研究表明，路基内部的温度沿深度方面呈线性分布规律，随着春融期温度的升高，路基深度1.3 m范围内温度升高，而路基深度1.3 m以下温度反而降低，该地的大地冻深为2.1 m。路基内部的湿度沿深度呈线性分布，水平方向的湿度基本一致，而在春融期，随着路基表面积雪的融化，路基顶面的湿度增大。

Abstract: The monitoring scheme of the subgrade temperature and humidity field of seasonal frozen region was established, the temperature and humidity field inside the subgrade were monitored and analyzed, and the regularity of the distribution of the subgrade temperature-humidity field was studied. The study shows that the temperature of the roadbed is linearly distributed along the depth. With the temperature rising in the spring melt period, temperature rises within the depth of 1.3 m of the subgrade but decreases below the depth of 1.3 m, and the freezing depth of the area is 2.1 m. The moisture inside the embankment is linearly distributed along the depth; the humidity in the horizontal direction is basically the same, while in the spring melt period, as the surface of the roadbed melts, the humidity of the roof of the subgrade increases.