基于生命周期评价方法半刚性基层施工过程中温室气体排放分析研究-道路与铁道工程专业论文.docxVIP

Based on LCA analysis the Greenhouse Gas Emission for Construction of the Semi-rigid Base A Dissertation Submitted for the Degree of Master Candidate：Du Li Supervisor：Prof.Sha Aimin Chang’an University, Xi’an, China I I PAGE PAGE IV 摘 摘 要 目前人类社会面临全球变暖，全球变暖的巨大负面影响已经使人类意识到了减少温 室气体排放的重要性。为了减缓气候变暖，全球各行各业均致力于节能减排。我国道路 基础设施覆盖率大，并且 90%以上的公路采用半刚性基层路面结构形式，因此本论文对 半刚性基层施工过程中的温室气体排放情况进行了详细分析，旨在找出半刚性基层施工 过程中的减排潜力。 论文基于道路生命周期评价方法，分析我国典型半刚性基层—水泥稳定碎石施工过 程中的温室气体排放情况。道路生命周期的系统边界设定为：原材料开采、加工、拌合 运输、摊铺、碾压和洒水养护七个阶段，不考虑道路运营期、重建和废弃阶段。首先， 论文详细分析了各个阶段的温室气体排放源，给出了气体排放源清单；其次，对不同的 排放源进行分类，并且针对不同类型的排放源，确定了排放量的量化方法；最后，用上 面给出的气体排放量量化方法进行实例研究。 本论文考虑的原材料包括：水泥、碎石和电。研究表明整个水泥稳定碎石施工过程 的温室气体主要来源于原材料获取过程，而水泥的生产过程占原材料获取阶段排放的 90%以上；施工各阶段的温室气体排放主要是各种施工机械的燃油排放，施工阶段对总 温室气体排放贡献相对甚少，不足 10%。 关键字：半刚性基层、温室气体、生命周期评价、原材料、施工机械、排放源、 燃油、排放清单 、 Abstract At present the global climate warming increasingly, global warming with the great negative impact has made human realize the importance to reduce greenhouse gas emissions.In order to slow down climate change ,all works of life in the global are committed to save energy. Our country’s road infrastructure with high coverage, more than 90% highway use semi rigid base pavement structure.Therefore this paper analysis in detail the greenhouse gas emissions of semi-rigid base construction process, and finds out the potential of emissions reduction during the semi-rigid base construction. Based on road life cycle assessment(LCA), the paper analyses of greenhouse gas emissions during the construction process of our country’s typical semi-rigid base--the the cement stable macadam. The system boundaries of the roads life cycle is set for: extraction and manufacture of raw materials, transportation, mixing, paving, rolling and water spraying maintenance seven stages, not considering the process of operation period and reconstruction stage.First of all, the paper detailed analysis of the various stages of the greenhouse gas emissions, given the gas emissions source list; Secondly