人民长江2013，Vol.44Issue(7)：71-74,4.
人工冻土多圈管冻融全过程温度场模型试验研究
Model test study of temperature field in freezing and thawing process of artificial frozen soil based on multi-coil freezing pipes
陈军浩1
作者信息
- 1. 安徽理工大学 土木建筑学院，安徽 淮南232001
- 折叠
摘要
Abstract
We conducted model test study on the whole freezing and thawing process of artificial frozen soil based on multi-coil freezing pipes to master the formation and melting law of freezing wall temperature field of multi-coil pipes. The test results indicated that the change rate of soil temperature in freezing process approximately equaled to that of thawing process. The soil temperature is observed to maintain stable in a relatively long duration at the point of phase-transition when the soil melts. In the melting process, the temperature of freezing wall was in accord with quadratic parabola along the radial direction and the aver-age temperature change of frozen wall with time was in a power function curve. The time ratio of freezing-thawing is kept in a range of 1. 47~2. 04 in a freezing time of 91. 7 h. The test results provided basis for the freezing design of shaft and the time se-lection of wall clearance grouting.关键词
多圈管/模型试验/冻融全过程/冻结壁温度场/融冻时间比Key words
multi-coil freezing pipes/model test/freezing and thawing process/temperature field of freezing wall/time ratio of freezing and thawing分类
天文与地球科学引用本文复制引用
陈军浩..人工冻土多圈管冻融全过程温度场模型试验研究[J].人民长江,2013,44(7):71-74,4.
