寒区隧道洞口空气幕温度场理论分析  

Theoretical Analysis of Temperature Field of Air Curtain at Tunnel Portal in Cold Region

作　　者：王仁远 朱永全[2] 朱正国[2] 方智淳 运凯 WANG Ren-yuan;ZHU Yong-quan;ZHU Zheng-guo;FANG Zhi-chun;YUN Kai(School of Urban and Rural Construction,Hebei Agricultural University,Baoding 071001,China;State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Institute of Civil and Architectural Engineering,Tongling University,Tongling 244000,China)

机构地区：[1]河北农业大学城乡建设学院,保定071001 [2]石家庄铁道大学省部共建交通工程结构力学行为与系统安全国家重点实验室,石家庄050043 [3]铜陵学院建筑工程学院,铜陵244000

出　　处：《科学技术与工程》2024年第32期14013-14022,共10页Science Technology and Engineering

基　　金：国家自然科学基金(51778380);河北省自然科学基金(E2024204022);河北省高等学校科学技术研究项目(BJK2024072);河北农业大学人才引进项目(YJ2023029);铜陵学院人才启动项目(2023tlxyrc30)。

摘　　要：为研究寒区隧道洞口空气幕保温技术的可行性,采用流体力学原理、叠加原理和贝塞尔特征函数等方法,构建完整的寒区隧道洞口空气幕温度场的理论体系。通过数值模拟,验证该保温技术的可行性,总结该保温技术的保温原则。结果表明:理论计算结果和数值计算结果较为接近,空气幕保温技术可有效防止隧道冻害;空气幕保温技术的保温原则可总结为加热为主,隔风为辅。研究成果可为今后的工程实践提供理论基础。In order to study the effectiveness of air curtain insulation technology at tunnel portal in cold regions,the principles of fluid mechanics,superposition principle,and Bessel characteristic function were adopted,and a theoretical system for the temperature field of air curtain at tunnel portal in cold regions was constructed.The feasibility of this insulation technology was verified through numerical simulation methods,and the insulation principles of this insulation technology were summarized.The results show that the theoretical calculation results are relatively close to the numerical calculation results,and tunnel freezing damage can be effectively prevented by air curtain insulation technology.The insulation principle of air curtain insulation technology can be summarized as heating is primary and air isolation is secondary.The research results can provide a theoretical basis for future engineering practice.

关 键 词：寒区隧道 温度场 理论解 空气幕 保温技术 

分 类 号：U457.5[建筑科学—桥梁与隧道工程]