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高速公路建设CO2排放计算分析

, PP. 150-158

Keywords: 环境工程,CO2排放,生命周期评价,高速公路建设

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Abstract:

为了计算与分析高速公路建设产生的CO2排放,将高速公路建设过程界定在原材料生产、原材料运输和机械施工3个阶段。首先梳理了高速公路建设CO2排放计算方法,并给出从工程概算表计算CO2排放量的流程图;然后对西南地区某拟建高速公路上的路基、路面、桥涵和隧道工程分别进行各阶段CO2排放计算,并分析各自排放构成;最后另划分为道路、桥涵、隧道3种不同工程进行单位工程量CO2排放水平比较。结果表明整条高速公路建设CO2排放主要来自原材料生产阶段,占比89.64%;其次是机械施工阶段,占比9.1l%;原材料运输阶段只占总量的1.25%。不同工程单位CO2排放水平上,道路工程为6803t/km,桥涵工程为48324t/km,隧道工程为37631t/km。通过与已有研究的对比讨论,验证了结果的可靠性。

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