盾构工作井碳排放构成及减碳路径研究  

Research on Carbon Emission and Reduction Path of Shield Tunneling Shaft

作　　者：饶倩 王鑫 RAO Qian;WANG Xin

机构地区：[1]上海城投公路投资(集团)有限公司,上海市200335 [2]上海市城市建设设计研究总院(集团)有限公司,上海市200125

出　　处：《城市道桥与防洪》2024年第10期276-282,M0025,M0026,共9页Urban Roads Bridges & Flood Control

基　　金：上海城投(集团)有限公司科研项目(CTKY-ZDZX-2022-001)。

摘　　要：结合漕宝路快速路新建工程,采用定额清单分析法,对合川路盾构工作井碳排放量进行核算。通过对碳排放量构成和主要来源的分析,得到了工作井结构按照不同分类模式下的碳排放占比,并提出针对性的减碳路径和方法。研究结果表明,在建材生产运输和建造阶段,盾构工作井碳排放总量可达到20850 t CO_(2)。按材料、机械和人工分类,各部分碳排放占比约为87.7%、11.9%和0.4%。建材生产运输阶段的碳排放量远高于施工阶段的机械能耗和人工碳排放量之和。尽管降水井的质量占比较小,但其对所在分部工程的碳排放计算有较大影响,是碳排放核算需要考虑的因素。接缝止水材料、防水材料的质量占比、碳排放占比均很小,可根据碳排放核算精度要求适当考虑或忽略不计。在基础设施建设方面,可以从低碳建材使用、建材和土方运输机械电动化、鼓励施工机械能源采用生物柴油、提高建筑垃圾资源化管理水平、提高措施项目的周转材料利用率等方面出发,有效降低碳排放。Based on the new construction project of Caobao Road Expressway,the quota list analysis method is used to calculate the carbon emissions of the shield tunneling shaft on Hechuan Road.By analyzing the composition and main sources of carbon emissions,the proportion of carbon emissions under different classification modes of the tunneling shaft structure is obtained,and the targeted carbon reduction paths and methods are proposed.The research results indicate that during the production,transportation and construction stages of building materials,the total carbon emissions from shield tunneling shafts can reach 20850 t of CO2.Classified by materials,machinery and labor,the carbon emissions of each component account for approximately 87.7%,11.9%,and 0.4%.The carbon emissions during the production and transportation phase of building materials are much higher than the sum of mechanical energy consumption and manual carbon emissions during the construction phase.Although the quality of precipitation wells accounts for a relatively small proportion,it has a great impact on the carbon emission calculation of the project in the division,and it is a factor that needs to be considered in carbon emissions accounting.The quality proportion and carbon emission proportion of joint water-stop materials and waterproofing materials are very small,and can be appropriately considered or ignored according to the accuracy requirements of carbon emission accounting.In terms of infrastructure construction,the effective measures can be taken to reduce carbon emissions by using low-carbon building materials,electrification of building materials and earthwork transportation machinery,encouraging the use of biodiesel in construction machinery energy,improving the level of construction waste resource management,and improving the utilization rate of turnover materials in project measures.

关 键 词：盾构工作井 建设期 碳排放构成 减碳路径 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]