A method of safety monitoring and measurement of overall frost heaving pressure of tunnel in seasonal frozen area

IF 5.8 4区工程技术 Q1 MECHANICS

Applied Rheology Pub Date : 2023-01-01 DOI:10.1515/arh-2022-0148

G. Cui, Yong Xiong

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引用次数: 1

Abstract

Abstract Antifreeze design, scientific operation, and maintenance of tunnels with broken surrounding rock in seasonal frozen areas are key factors that affect the safety of tunnel. According to a freezing damage treatment project, theoretical analysis, field monitoring, and numerical simulation are used to study the calculation method of the overall frost-heaving pressure of a tunnel with broken surrounding rock in the seasonal frozen area. Based on the overall frost-heaving model of the broken freeze–thawing lithosphere, a calculation method of the overall frost-heaving pressure of the horseshoe-shaped tunnel with broken surrounding rock in a seasonal frozen area is proposed. The results show that the management grading results based on the freezing depth of the surrounding rock on site are consistent with those based on the minimum safety factor of the lining structure, which indicates that the proposed method for calculating the overall frost-heaving pressure of broken surrounding rock tunnel and management standards for safety monitoring and measurement of tunnel linings can be applied to engineering practice. The research results can provide a reference for the calculation of frost-heaving pressure, operational safety, and prevention of freezing damages in tunnels with broken surrounding rock in a seasonal frozen area.

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季节冻土区隧道整体冻胀压力的安全监测方法

摘要季节性冻区围岩破碎隧道的防冻设计、科学施工和维护是影响隧道安全的关键因素。结合某冻害治理工程，采用理论分析、现场监测和数值模拟相结合的方法，研究了季节性冻区围岩破碎隧洞整体冻胀压力的计算方法。基于冻融岩石圈破碎的整体冻胀模型，提出了季节性冻土区围岩破碎马蹄形隧道整体冻胀压力的计算方法。结果表明，基于现场围岩冻结深度的管理分级结果与基于衬砌结构最小安全系数的管理分级结果一致，表明本文提出的破碎围岩隧道整体冻胀压力计算方法和隧道衬砌安全监测管理标准可应用于工程实践。研究结果可为季节性冻区围岩破碎隧道的冻胀压力计算、运行安全及防止冻害提供参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Rheology 物理-力学

CiteScore

3.00

自引率

5.60%

发文量

审稿时长

>12 weeks

期刊介绍： Applied Rheology is a peer-reviewed, open access, electronic journal devoted to the publication in the field of applied rheology. The journal provides the readers with free, instant, and permanent access to all content worldwide; and the authors with extensive promotion of published articles, long-time preservation, language-correction services, no space constraints and immediate publication.