Zhang Rui, Li Lu, Cui Libo, Liu Tao, Zhang Bangchao, Wang Shunsheng, Zhao Yuting, Hu Wenyi, Liao Chengchao, Song Kang
Guangzhou Metro Group Co., Ltd., Guangzhou 510330, People's Republic of China.
Guangzhou Metro Construction Management Co., Ltd., Guangzhou 510330, People's Republic of China.
ACS Omega. 2024 Aug 1;9(32):34175-34184. doi: 10.1021/acsomega.4c04064. eCollection 2024 Aug 13.
The rail transit construction process produces a large quantity of carbon emission. The carbon emission could be divided into two sources, including direct carbon emission from the construction process and indirect carbon emission by raw material utilization. With the promotion of China National carbon peaking and carbon neutrality goals, it is an industry trend for the rail transit construction company to reduce carbon emission during the construction event. This study provides a detailed overview of the possible carbon emission process and carbon mitigation process during the rail transit construction event and puts forward preliminary carbon mitigation suggestions and strategy for the rail transit construction process. The predominant carbon emission section during rail transit construction is the raw material (including the steel, cement, concrete, tunnel segment), electricity, and fuel consumption during construction. It is suggested that the rail transit construction process could achieve carbon emission mitigation from the following prospects: make careful plans for the raw material selection (such as using recycled concrete, recycled steel, and so forth), improve the construction process to reduce energy waste, and optimize the equipment selection during the mechanical and electrical installment process. By this, the carbon emission could be mitigated during the rail transit construction.
轨道交通建设过程会产生大量碳排放。碳排放可分为两个来源，包括建设过程中的直接碳排放以及原材料利用产生的间接碳排放。随着中国国家碳达峰和碳中和目标的推进，轨道交通建设公司在建设过程中减少碳排放是行业趋势。本研究详细概述了轨道交通建设过程中可能的碳排放过程和碳减排过程，并针对轨道交通建设过程提出了初步的碳减排建议和策略。轨道交通建设过程中主要的碳排放环节是原材料（包括钢材、水泥、混凝土、隧道管片）、施工期间的电力和燃料消耗。建议轨道交通建设过程可从以下方面实现碳排放减排：精心规划原材料选择（如使用再生混凝土、再生钢材等），改进施工工艺以减少能源浪费，以及在机电安装过程中优化设备选型。通过这些措施，可在轨道交通建设过程中减轻碳排放。
