道路融雪除冰技术生命周期内环境负荷分析
Analysis of the Environmental Load During the Life Cycle of Road Snow-melting and Deicing Technology
郭猛 1蔡晓晓 1王京京 1杜修力1
作者信息
- 1. 北京工业大学桥梁工程安全与韧性全国重点实验室,北京 100124;北京工业大学城市与工程安全减灾教育部重点实验室,北京 100124
- 折叠
摘要
目前广泛采用的融雪除冰方法会对路面和环境产生一定的破坏.为了研究沥青路面融雪除冰技术在其生命周期内对环境的影响作用,以蓄盐路面、电缆加热路面、机械除冰雪3种不同融雪除冰技术为研究对象,基于生命周期分析(LCA)方法,将3种不同融雪除冰技术分为原料开采、拌和、运输、摊铺压实、除冰雪5个过程,量化分析3种不同融雪除冰技术生命周期内环境排放的影响.取全球变暖潜值(GWP)、酸化潜值(AP)、光化学臭氧形成潜值(POCP)、人体毒性潜值(HTP)4种环境影响类别来评价生命周期内融雪除冰技术的环境负荷.研究结果表明:在融雪除冰技术的各个阶段中,CO2的排放均是最多;在整个生命周期内,3种融雪除冰技术产生的环境负荷的排序均为GWP＞HTP＞AP＞POCP;在4种影响类别中,不同融雪除冰技术中GWP占比均在74％以上.为了使不同融雪除冰技术的环境负荷进行比较,对不同融雪除冰技术的分析结果进行归一化处理,得出电缆加热路面产生的环境负荷最大,蓄盐路面产生的环境负荷最小.
Abstract
Currently,the widely used snow-melting and deicing methods cause damage to road surfaces and the environment.To study the impact of asphalt-pavement snow-melting and deicing technology on the environment during its life cycle,three different snow-melting and deicing technologies were investigated:pavement containing salt,cable-heated pavement,and mechanical ice removal.Based on the life-cycle assessment method,the three snow-melting and deicing technologies were divided into five processes:raw-material mining,mixing,transportation,paving compaction,and snow removal.The impact of environmental emissions over the life cycle of the three snow-melting and de-icing technologies was quantified.Four environmental impacts-global-warming potential(GWP),acidification potential(AP),photochemical ozone creation potential(POCP),and human toxicity potential(HTP)-were considered to evaluate the environmental load of snow-melting and deicing technology.The results show that CO2 emissions are the largest in all stages of snow melting and deicing.The environmental loads of the three snow-melting and de-icing technologies are ranked throughout the life cycle:GWP＞HTP＞AP＞POCP.Of the four impact categories,GWP accounts for more than 74％of the environmental load of the different snow-melting and de-icing technologies.To compare the environmental loads of different snow-melting and deicing technologies,their analysis results were normalized.It is concluded that the environmental load generated by the cable-heated pavement is the largest,while that generated by the pavement containing salt is the smallest.
关键词
路面工程/沥青路面/生命周期评价/环境负荷/融雪除冰Key words
pavement engineering/asphalt pavement/life cycle assessment/environmental load/snow melting and deicing引用本文复制引用
基金项目
国家重点研发计划项目(2022YFE0137300)
国家自然科学基金项目(52478429)
国家自然科学基金项目(52078018)
出版年
2024
NETL
NSTL
万方数据