砂卵石地层地铁联络通道冻结温度场发展研究

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【中图分类号】：TU475.2 【文献标志码】：A 【文章编号】：1008-3197（2025）02-10-06

【DOI编码】：10.3969/j.issn.1008-3197.2025.02.003

Research on the Development of Freezing Temperature Field of Subway Cross Passage in Sand-gravel Stratum

ZHANG Zhicheng， ZHU Pengye

（Tianjin Municipal EngineeringDesign&Research InistituteCo.Ltd.，Tianjin3Oo392，China）

【Abstract】 ∵ Inorder to perceive the development law of frozen temperature field.This paper taking actual engineering as an example，basedonon-site temperature monitoringdata，the development law of thegeologicaltemperature fieldduring the freezing process is analyzed.Theresearch results indicate thatthe temperature change trend at each measuring point during the freezing period is roughly the same，experiencing three stages：rapid cooling，slow cooling，and maintenance freezing.The inner side of the frozen wall is afected by excavation，and the heat exchange between the soil andair intensifies，resulting ina temperature rise phenomenon.The minimum freezing development speed of the temperature measurement hole is taken as the average expansion speedof the frozen wallAfter 38 days of freezing，the minimum development radius of the single-sided frozen wall is 1292m ：

【Key words】：subway cross passage；freezing method；sand-gravel stratum；temperature field

人工冻结法凭借绿色环保、止水和加固效果好、冻结范围可控等优势，成为加固地层的一种行之有效的方法，在地铁暗挖工程中被广泛应用。（剩余5285字）