地铁盾构隧道建设期碳排放强度估算及细颗粒物分布特性研究

Carbon Emission Intensity Estimation and Distribution Characteristics of Fine Particulate Matter during Construction of Subway Shield Tunnel

在地铁盾构隧道建设期碳排放强度估算中,数据敏感度不够,估算数据的正确比较低,很难满足细颗粒物分布特性的研究需求,为此提出地铁盾构隧道建设期碳排放强度估算及细颗粒物分布特性研究方法。建立碳排放量测算模型,确定模型的计算边界,分别确定建设期各个阶段的碳排放系数,更新测算模型,计算总的碳排放量,估算碳排放强度,建立细颗粒物的空间运动模型,完成细颗粒物的分布特性分析。实验结果表明:在不同工况下,所提方法估算正确比较高,整体性能得到了提升。

In the estimation of carbon emission intensity during the construction period of subway shield tunnels,the data sensitivity is insufficient,and the accuracy of the estimation data is relatively low,making it difficult to meet the research needs of the distribution characteristics of fine particles.Therefore,this study proposed a method for estimating carbon emission intensity during the construction period of subway shield tunnels and studying the distribution characteristics of fine particles.It established a carbon emission calculation model to determine the calculation boundary of the model,and the carbon emission coefficients for each stage of the construction period.By updating the calculation model,the research calculated the total carbon emissions,estimated the carbon emission intensity and established a spatial motion model of fine particulate matter,and complete the analysis of the distribution characteristics of fine particulate matter.The experimental results show that the proposed method has a relatively high estimation accuracy and overall performance has been improved under different operating conditions.