深厚冲积层冻结壁融化过程中温度场现场实测与分析

Field Measurement and Analysis on Temperature Field during Melting of Frozen Wall in Deep Alluvium

利用冻结法凿井测温孔在冻结壁融化过程中的实测数据,对深厚冲积层不同土层的融化速率进行了分析。依据测温孔实测曲线,并对曲线进行了拟合,得到在深厚冲积层冻结壁融化阶段测温孔的温度时间曲线可以用幂函数来表示。并通过计算,得到了不同土层相应的融冻时间比。

The data of the measurement temperature holes in melting stage of frozen wall were used,the melting rate of different soil layers in deep alluvium were analyzed. Based on the measured curve of temperature hole,the results showed that the temperature-time curve of temperature hole can be fit power function during the melting of frozen wall in deep alluvium. The ratio of the melting and freezing time in different soil layers were obtained by computation.