高地温隧道施工期热害综合防治关键技术研究  

Research on the Key Technology of Comprehensive Prevention and Control of Heat Damage During the Construction of High Ground Temperature Tunnels

作　　者：王松涛 WANG Songtao(China Railway Construction Bridge Engineering Bureau Group Fifth Engineering Company Limited,Chengdu Sichuan 610500,China)

机构地区：[1]中铁建大桥工程局集团第五工程有限公司,四川成都610500

出　　处：《铁道建筑技术》2024年第3期137-140,共4页Railway Construction Technology

基　　金：中国铁建大桥工程局集团有限公司科技创新项目(DQJ-2021-B07)。

摘　　要：为解决高地温隧道施工过程中的高温作业环境问题,提高施工人员舒适度和生产效率,以兰渝铁路化马隧道为研究对象,通过现场监测、数值模拟和现场实践相结合的方法,研究分析了高地温隧道的形成及施工影响,并对热害防治技术进行了相关研究,确定了隧道隔热层最佳厚度50 mm,并采用“双通风管道通风+掌子面冰块降温”的降温技术,现场应用良好,隧道内温度满足施工要求,确保高地温隧道施工的安全性和效率。研究结果可为高地温隧道的通风隔热设计与施工提供依据。In order to solve the problem of a high ground temperature working environment during the construction of high ground temperature tunnels and to improve the comfort and productivity of construction personnel,this paper takes the Huama Tunnel of the Lanzhou-Chongqing Railway as the object of study.Through the combination of on-site monitoring,numerical simulation,and on-site practice,it studies and analyzes the formation of high ground temperature tunnels and the impacts of construction,conducts a relevant study on the prevention and control technology of thermal hazards,and determines the optimal thickness of the tunnel thermal insulation layer of 50 mm.The cooling technology of'double ventilation pipe ventilation+ice cooling on tunnel surface'is adopted,which is well applied in the field.The temperature inside the tunnel meets the construction requirements to ensure the safety and efficiency of high geothermal tunnel construction.The results of the study can provide a basis for the design and construction of ventilation and thermal insulation for high ground temperature tunnels.

关 键 词：高地温隧道 热害 隔热层 冰块降温 通风 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]