天津建设科技2025，Vol.35Issue(2)：10-15,6.DOI:10.3969/j.issn.1008-3197.2025.02.003
砂卵石地层地铁联络通道冻结温度场发展研究
Research on the Development of Freezing Temperature Field of Subway Cross Passage in Sand-gravel Stratum
张志成 1朱鹏烨1
作者信息
- 1. 天津市政工程设计研究总院有限公司,天津 300392
- 折叠
摘要
Abstract
In order to perceive the development law of frozen temperature field.This paper taking actual engineering as an example,based on on-site temperature monitoring data,the development law of the geological temperature field during the freezing process is analyzed.The research results indicate that the temperature change trend at each measuring point during the freezing period is roughly the same,experiencing three stages:rapid cool-ing,slow cooling,and maintenance freezing.The inner side of the frozen wall is affected by excavation,and the heat exchange between the soil and air intensifies,resulting in a temperature rise phenomenon.The mini-mum freezing development speed of the temperature measurement hole is taken as the average expansion speed of the frozen wall.After 38 days of freezing,the minimum development radius of the single-sided frozen wall is 1 292 m.关键词
地铁联络通道/冻结法/砂卵石地层/温度场Key words
subway cross passage/freezing method/sand-gravel stratum/temperature field分类
土木建筑引用本文复制引用
张志成,朱鹏烨..砂卵石地层地铁联络通道冻结温度场发展研究[J].天津建设科技,2025,35(2):10-15,6.
