Research on frost heaving pressure and frost deformation of water-filled fractures in the rock

IF 3.8 2区工程技术 Q1 ENGINEERING, CIVIL Cold Regions Science and Technology Pub Date : 2025-07-01 Epub Date: 2025-03-09 DOI:10.1016/j.coldregions.2025.104490

Yanzhang Liu , Qin Tian , Shibing Huang , Luobin Zheng , Fei Liu

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Abstract

Frost heave of water-filled fractured rock masses is common in alpine regions due to freezing of fracture water. This study investigates the formation and evolution mechanism of frost heaving pressure and frost deformation response in water-filled fractures using a test system consisting of thin film pressure sensors, temperature sensors and strain gauges. Results show that frost heaving pressure is almost zero in the upper part during freezing, while it is linearly distributed along fracture when the fracture depth exceeds 0.6 times the total. The evolution of frost heaving pressure has five-stage characteristics, including preparation, burst, reduction to balance, thawing induced growth, and dissipation stages. A mechanical model for frost deformation of water-filled open fractures is established by using the partially loaded cantilever beam equation, considering ice-rock fracture interactions. The model is verified against experimental data, showing that it can well predict the frost deformation. Finally, the freezing process and failure modes of water-filled fractures in sandstone and granite under freeze-thaw cycles are compared and discussed. This research enhances the understanding of frost damage and cracking mechanisms in water-filled fractured rock masses.

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岩石充水裂隙冻胀压力及冻胀变形研究

由于裂隙水的冻结，在高寒地区充填水的裂隙岩体冻胀十分常见。采用由薄膜压力传感器、温度传感器和应变片组成的试验系统，研究充水裂缝冻胀压力和冻变形响应的形成与演化机制。结果表明：冻结过程中上部冻胀压力几乎为零，而当裂缝深度超过总深度的0.6倍时，冻胀压力沿裂缝方向呈线性分布；冻胀压力的演化具有准备阶段、破裂阶段、降至平衡阶段、解冻诱导生长阶段和消散阶段五个阶段的特征。采用部分加载悬臂梁方程，考虑冰-岩断裂相互作用，建立了含水开缝冻胀变形力学模型。与试验数据进行了对比验证，表明该模型能较好地预测结霜变形。最后，对冻融循环作用下砂岩和花岗岩充水裂隙的冻结过程和破坏模式进行了比较和讨论。本研究提高了人们对充水裂隙岩体冻损及开裂机理的认识。

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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.