地热区隧道施工热害分级防护方法研究  

Study on Hierarchical Prevention Method of Heat Hazard in Geothermal Tunnel Construction

作　　者：陈奇 赵祎琪 周云雷 张恒[2] 陈寿根[2] Chen Qi;Zhao Yiqi;Zhou Yunlei;Zhang Heng;Chen Shougen(China MCC5 Group Corp.Ltd.,Chengdu 610063,P.R.China;Key Laboratory of Transportation Tunnel Engineering,Ministry of Education,Southwest Jiaotong University,Chengdu 610031,P.R.China)

机构地区：[1]中国五冶集团有限公司,成都610063 [2]西南交通大学交通隧道工程教育部重点实验室,成都610031

出　　处：《地下空间与工程学报》2024年第5期1717-1729,1750,共14页Chinese Journal of Underground Space and Engineering

基　　金：国家自然科学基金(51508477);中央高校基本科研业务费专项资金(2682016CX012)。

摘　　要：当隧道掘进进入地热区,隧道施工区间的高热环境不但危害隧道工程质量,而且影响工程进度和施工安全。把握地热区隧道施工的热环境特点,采取有效、经济的热害防护措施,是地热区隧道施工技术的关键。目前,热害防护措施的选择缺乏科学依据,容易因“欠防护”而造成热害防护效果不到位,或因“过防护”而造成资源浪费。本文根据地热区施工隧道热源及施工热环境特点,提出了一种基于热害水平评价的热害分级防护方法。该方法考虑影响施工热害的关键因素,运用模糊评价法对隧道热害水平进行评价,根据热害评价结果采取与之匹配等级的热害防护措施进行防护。该方法在满足热害防护效果要求的同时,可降低热害防护成本、减少能耗。When tunneling progresses into the geothermal areas,the high-temperature environment threatens the quality of engineering structures and the health of workers,reduces the work efficiency of staff,or impacts the normal operation of mechanical and electronic equipment.Therefore,it is significantly important to understand the heat transfer characteristics of geothermal construction tunnels for cost-effective heat-hazard-prevention measures.Based on the understanding of the thermal characteristics of geothermal construction tunnel,a method of heat-hazard prevention based on fuzzy comprehensive evaluation of heat hazards is proposed.Firstly,considering the factors of geothermal,construction conditions,subjective and objective construction workers,fuzzy comprehensive evaluations of heat hazards for different stages of tunnel excavation are carried out.Then,corresponding heat hazard prevention measures are formulated according to the heat hazard evaluation results.Finally,heat hazard evaluations and heat hazard prevention measures are constantly updated and iterative throughout construction period.While ensuring the cooling and prevention of heat hazards,the cost of heat hazard prevention measures is reduced,as well as the consumption of energy and resources,that makes the whole process of geothermal tunnel construction safe and economical.

关 键 词：地热隧道 热害水平 模糊评价 分级防护 

分 类 号：TU94[建筑科学—建筑技术科学]