A review on settlement models of municipal solid waste landfills.
A review on settlement models of municipal solid waste landfills.
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DOI：
10.1016/j.wasman.2022.06.019
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发表时间：
2022-06
期刊：
影响因子：
8.1
通讯作者：
Yinbang Ren;Zhen-ying Zhang;Man Huang
中科院分区：
文献类型：
--
作者：
Yinbang Ren;Zhen-ying Zhang;Man Huang
填埋是目前世界各国最普遍、最经济、最便捷的城市生活垃圾处理方式。城市生活垃圾具有复杂的组成和特殊的工程特性，这导致了城市生活垃圾填埋场的沉降机制非常复杂。本文综述了现有文献对该沉降机制的描述，并将其分为应力相关机制、有机物生物降解过程、水相关机制和无机组分的物理化学过程。基于沉降机理，分析了垃圾填埋场沉降的影响因素，包括生活垃圾组成、物性参数、环境因素、填埋场运行方式等。通过对城市生活垃圾填埋场沉降影响因素的分析，得出了一些切实可行的工程建议。介绍了城市生活垃圾填埋场沉降研究的四种常用方法，包括室内试验、现场沉降监测、理论分析和数值模拟。我们将现有的沉降模型分为6类：土力学模型、流变模型、经验模型、生物降解模型、本构模型和多相耦合模型。比较分析了不同模型的优缺点及其适用性。此外，还讨论了城市生活垃圾填埋场沉降建模过程中的局限性和未来的研究方向。
Currently, landfill is the most common, economical, and convenient method for municipal solid waste (MSW) disposal in countries around the world. MSW has a complex composition and special engineering characteristics, which lead to a very complex settlement mechanism in MSW landfills. This article reviews the description of this settlement mechanism in the existing literature and classifies it into stress-related mechanisms, biodegradation processes of organic substances, water-related mechanisms and physical and chemical processes of inorganic components. Based on the settlement mechanism, the influencing factors of landfill settlement were analysed, including the composition of MSW, physical parameters, environmental factors, and the operation mode of the landfill. Some practical engineering suggestions are obtained by analysing the influencing factors of MSW landfill settlement. Four common methods for studying the settlement of MSW landfills are presented, including laboratory experiments, in-situ settlement monitoring, theoretical analysis, and numerical simulation. We classified the existing settlement models into six categories: a soil mechanics, rheological, empirical, biodegradation, constitutive, and multiphase coupling models. Advantages and disadvantages of the different models and their applicability are compared and analysed. Moreover, limitations in the modelling process of MSW landfill settlement and future research directions are discussed.