Frost-heaving pressure distribution and evolution in cracked rock under unidirectional freezing condition

IF 3.8 2区工程技术 Q1 ENGINEERING, CIVIL

Cold Regions Science and Technology Pub Date : 2025-08-08 DOI:10.1016/j.coldregions.2025.104629

Shuaishuai Niu , Xuedong Luo , Shengtao Zhou , Nan Jiang , Xinting Zhang

{"title":"Frost-heaving pressure distribution and evolution in cracked rock under unidirectional freezing condition","authors":"Shuaishuai Niu , Xuedong Luo , Shengtao Zhou , Nan Jiang , Xinting Zhang","doi":"10.1016/j.coldregions.2025.104629","DOIUrl":null,"url":null,"abstract":"<div><div>The frost-heaving effect on water-bearing cracks significantly alters the physical and mechanical properties of rock mass and presents a substantial risk to the stability of rock slopes in cold regions. To study the evolution of frost-heaving pressure in rock, a series of unidirectional freezing experiments were conducted on red sandstones with prefabricated cracks under varying crack widths and cooling rates. Through an analysis of the temperature distribution characteristics within the fractures, the evolution of frost-heaving pressure was elucidated, and its peak value was determined using the coupled expansion method, which accounts for both rock and ice within the cracks. Results show that the frost-heaving pressure in cracks of different depths evolves synchronously. However, as depth increases, the peak frost-heaving pressure increases gradually, and at the same depth, the peak frost-heaving pressure increases as crack width increases. The peak frost-heaving pressure at the crack bottom decreases as the cooling rate decreases. The frost-heaving pressure in the middle of the crack first increases and then decreases as the cooling rate increases. Additionally, the theoretical model indicates that the distribution characteristics of residual water are the key factors affecting the frost-heaving pressure distribution. The effect of crack geometry parameters and cooling rate on frost-heaving pressure is controlled by the changes in residual water content. The loss of residual water drives the redistribution of frost-heaving pressure during crack propagation. This study can provide a better understanding of the freeze-thaw weathering mechanism of rock masses in cold regions and provides a reference for calculating frost-heaving pressure in cracked rock masses and for assessing the stability of rock engineering.</div></div>","PeriodicalId":10522,"journal":{"name":"Cold Regions Science and Technology","volume":"240 ","pages":"Article 104629"},"PeriodicalIF":3.8000,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cold Regions Science and Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0165232X25002125","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}

引用次数: 0

Abstract

The frost-heaving effect on water-bearing cracks significantly alters the physical and mechanical properties of rock mass and presents a substantial risk to the stability of rock slopes in cold regions. To study the evolution of frost-heaving pressure in rock, a series of unidirectional freezing experiments were conducted on red sandstones with prefabricated cracks under varying crack widths and cooling rates. Through an analysis of the temperature distribution characteristics within the fractures, the evolution of frost-heaving pressure was elucidated, and its peak value was determined using the coupled expansion method, which accounts for both rock and ice within the cracks. Results show that the frost-heaving pressure in cracks of different depths evolves synchronously. However, as depth increases, the peak frost-heaving pressure increases gradually, and at the same depth, the peak frost-heaving pressure increases as crack width increases. The peak frost-heaving pressure at the crack bottom decreases as the cooling rate decreases. The frost-heaving pressure in the middle of the crack first increases and then decreases as the cooling rate increases. Additionally, the theoretical model indicates that the distribution characteristics of residual water are the key factors affecting the frost-heaving pressure distribution. The effect of crack geometry parameters and cooling rate on frost-heaving pressure is controlled by the changes in residual water content. The loss of residual water drives the redistribution of frost-heaving pressure during crack propagation. This study can provide a better understanding of the freeze-thaw weathering mechanism of rock masses in cold regions and provides a reference for calculating frost-heaving pressure in cracked rock masses and for assessing the stability of rock engineering.

查看原文本刊更多论文

单向冻结条件下裂隙岩体冻胀压力分布与演化

含水裂缝的冻胀效应显著地改变了岩体的物理力学性质，对寒区岩质边坡的稳定性构成重大威胁。为研究岩石冻胀压力的演化规律，在不同裂缝宽度和冷却速率下，对预制裂缝红砂岩进行了一系列单向冻结试验。通过对裂隙内温度分布特征的分析，阐明了冻胀压力的演化规律，并采用兼顾裂隙内岩石和冰的耦合膨胀法确定了冻胀压力的峰值。结果表明：不同深度裂缝冻胀压力同步演化；但随着深度的增加，峰值冻胀压力逐渐增大，且在相同深度下，峰值冻胀压力随裂缝宽度的增加而增大。裂纹底部霜胀压力峰值随冷却速率的减小而减小。随着冷却速率的增大，裂纹中部的冻胀压力先增大后减小。理论模型还表明，残余水的分布特征是影响冻胀压力分布的关键因素。裂纹几何参数和冷却速率对冻胀压力的影响受残余含水量变化的控制。裂隙扩展过程中残余水的损失驱动了冻胀压力的重新分布。该研究可以更好地了解寒区岩体冻融风化机理，为裂隙岩体冻胀压力计算和工程稳定性评价提供参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Cold Regions Science and Technology 工程技术-地球科学综合

CiteScore

7.40

自引率

12.20%

发文量

209

审稿时长

4.9 months

期刊介绍： Cold Regions Science and Technology is an international journal dealing with the science and technical problems of cold environments in both the polar regions and more temperate locations. It includes fundamental aspects of cryospheric sciences which have applications for cold regions problems as well as engineering topics which relate to the cryosphere. Emphasis is given to applied science with broad coverage of the physical and mechanical aspects of ice (including glaciers and sea ice), snow and snow avalanches, ice-water systems, ice-bonded soils and permafrost. Relevant aspects of Earth science, materials science, offshore and river ice engineering are also of primary interest. These include icing of ships and structures as well as trafficability in cold environments. Technological advances for cold regions in research, development, and engineering practice are relevant to the journal. Theoretical papers must include a detailed discussion of the potential application of the theory to address cold regions problems. The journal serves a wide range of specialists, providing a medium for interdisciplinary communication and a convenient source of reference.