低温状态下冻土-浆脉结合界面的力学特性

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中图分类号：TU445 文献标志码：A 文章编号：1008-0562（2026）01-0059-07

Mechanical characteristics of frozen soil-grout interface at low temperature

HU Zhiqiang'， CUI Honghuan1，2*， ZHANG Song1 ，ZHANG Qingwu’，XU Weijiang'，WANG Yuhao1 （1.School of Civil Engineering，Hebei University ofArchitecture，Zhangjiakou 075oo0，China;2.Hebei Province KeyLaboratory of CivilEngineering Diagnosis，Renovation，and DisasterResistance，Zhangjiakou 075000， China;3. Kailuan Construction （Group） Company Limited， Tangshan 063ooo， China）

Abstract：Aiming at the problem ofunclear mechanical properties offrozen soil-pulp vein interface failure in the construction of artificial freezingmethod in high water-rich strata，Brazilian spliting testcombined with digital image correlation technology （DIC） was used to test the frozen soil-pulp vein combined specimens，and the effects of diferent initial water content and freezing negative temperature on the mechanical properties and fractureevolution mechanism of the interface were analyzed.The resultsshow that the interface crack propagation modes of specimens with different initial water contents are significantly different and the initiation is non-synchronous.The decrease of initial water content makes the slurry vein effectively improve the strength of frozen soil，and the failure path changes from britlenessto toughness.The damage process of the specimens is divided into the accumulation stage and the rapid stage.When the initial water content increases，the duration of the damage accumulation stage and the size and occurrence time of the damage acceleration point Df increase first and then decrease.The research conclusions provide technical support for the application of freezing method in underground engineering.

Keywords： frozen soil-grout interface；low temperature state；Brazilian split；digital image technology; mechanical properties; water contents

0 引言

工程，这类工程通常采用人工冻结技术进行加固[1-3]。（剩余10448字）