双隧道周围土壤性质空间变异对人工冻结帷幕的影响

IF 3.8 2区工程技术 Q1 ENGINEERING, CIVIL

Cold Regions Science and Technology Pub Date : 2025-09-08 DOI:10.1016/j.coldregions.2025.104681

Wei Guo , Tiancheng Sun , Guoyao Gao

{"title":"双隧道周围土壤性质空间变异对人工冻结帷幕的影响","authors":"Wei Guo , Tiancheng Sun , Guoyao Gao","doi":"10.1016/j.coldregions.2025.104681","DOIUrl":null,"url":null,"abstract":"<div><div>Artificial ground freezing (AGF) technology is widely used for groundwater control for twin tunnel construction in water-rich sandy soil. A thermal-hydro-salt-mechanical (THSM) coupled random model is proposed to consider the effects of spatial variabilities of soil properties on frozen curtain formed around twin tunnels. The results from the proposed model fairly agree with those from model test in literature. It is found that the amplitude fluctuations of the porosity and thermal conductivity of sandy soil influence the frozen curtains. Many gaps are found in the formed frozen curtain after different duration of AGF around twin tunnels. The differences of the proportion of the gap area between uniform soil and random properties of sandy soil with different amplitudes of fluctuation of porosity and thermal conductivity fall in the bounds of ±5 % and ±7 %, respectively. The degree of freezing versus time factor curves were randomly distributed due to the effects of the amplitude fluctuations of sandy soil and spacings of freeze pipes. However, they all lie above a fitting curve which could be used to conservatively design the AGF method used for groundwater control of twin tunnel construction in similar water-rich sandy soils.</div></div>","PeriodicalId":10522,"journal":{"name":"Cold Regions Science and Technology","volume":"241 ","pages":"Article 104681"},"PeriodicalIF":3.8000,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of spatial variability of soil properties on artificial frozen curtain around twin tunnels\",\"authors\":\"Wei Guo , Tiancheng Sun , Guoyao Gao\",\"doi\":\"10.1016/j.coldregions.2025.104681\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Artificial ground freezing (AGF) technology is widely used for groundwater control for twin tunnel construction in water-rich sandy soil. A thermal-hydro-salt-mechanical (THSM) coupled random model is proposed to consider the effects of spatial variabilities of soil properties on frozen curtain formed around twin tunnels. The results from the proposed model fairly agree with those from model test in literature. It is found that the amplitude fluctuations of the porosity and thermal conductivity of sandy soil influence the frozen curtains. Many gaps are found in the formed frozen curtain after different duration of AGF around twin tunnels. The differences of the proportion of the gap area between uniform soil and random properties of sandy soil with different amplitudes of fluctuation of porosity and thermal conductivity fall in the bounds of ±5 % and ±7 %, respectively. The degree of freezing versus time factor curves were randomly distributed due to the effects of the amplitude fluctuations of sandy soil and spacings of freeze pipes. However, they all lie above a fitting curve which could be used to conservatively design the AGF method used for groundwater control of twin tunnel construction in similar water-rich sandy soils.</div></div>\",\"PeriodicalId\":10522,\"journal\":{\"name\":\"Cold Regions Science and Technology\",\"volume\":\"241 \",\"pages\":\"Article 104681\"},\"PeriodicalIF\":3.8000,\"publicationDate\":\"2025-09-08\",\"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/S0165232X25002642\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cold Regions Science and Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0165232X25002642","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

摘要

人工冻结技术在富水沙质双隧道施工中被广泛应用于地下水控制。提出了考虑土体性质空间变异性对双隧道冻结帷幕影响的热-水-盐-力学（THSM）耦合随机模型。模型的结果与文献中模型检验的结果基本一致。研究发现，砂土孔隙率和导热系数的幅值波动对冻结帷幕有影响。在双隧洞周围，经过不同时间的AGF作用，形成的冻结帷幕中存在许多空隙。不同孔隙率和导热系数波动幅度下，均匀土与随机土的空隙面积比例差异分别在±5%和±7%范围内。冻结程度随时间因子曲线受沙土振幅波动和冻结管间距的影响呈随机分布。但是，它们都位于一条拟合曲线之上，可以用来保守地设计用于类似富水沙土中双隧道施工地下水控制的AGF方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Effect of spatial variability of soil properties on artificial frozen curtain around twin tunnels

Artificial ground freezing (AGF) technology is widely used for groundwater control for twin tunnel construction in water-rich sandy soil. A thermal-hydro-salt-mechanical (THSM) coupled random model is proposed to consider the effects of spatial variabilities of soil properties on frozen curtain formed around twin tunnels. The results from the proposed model fairly agree with those from model test in literature. It is found that the amplitude fluctuations of the porosity and thermal conductivity of sandy soil influence the frozen curtains. Many gaps are found in the formed frozen curtain after different duration of AGF around twin tunnels. The differences of the proportion of the gap area between uniform soil and random properties of sandy soil with different amplitudes of fluctuation of porosity and thermal conductivity fall in the bounds of ±5 % and ±7 %, respectively. The degree of freezing versus time factor curves were randomly distributed due to the effects of the amplitude fluctuations of sandy soil and spacings of freeze pipes. However, they all lie above a fitting curve which could be used to conservatively design the AGF method used for groundwater control of twin tunnel construction in similar water-rich sandy soils.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

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.