One-dimensional model for municipal solid waste (MSW) settlement considering coupled mechanical-hydraulic-gaseous effect and concise calculation
One-dimensional model for municipal solid waste (MSW) settlement considering coupled mechanical-hydraulic-gaseous effect and concise calculation
复制标题
考虑机械-水力-气态耦合效应的城市固体垃圾沉降一维模型及简洁计算
DOI：
10.1016/j.wasman.2011.07.013
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发表时间：
2011-12-01
期刊：
影响因子：
8.1
通讯作者：
Peng, Gongxun
中科院分区：
文献类型：
--
作者：
Liu, Xiaodong;Shi, Jianyong;Peng, Gongxun
为了模拟和预测城市生活垃圾的沉降，本文提出了一个新的城市生活垃圾的机械-水力-气体耦合效应和生化降解模型。该耦合模型可用于模拟和预测气、水压力分布及总沉降量。模型验证表明，由于降解作用，超孔隙气压力迅速增大，并在短时间内达到峰值，随后逐渐消散。但超孔隙水压力并不总是在初始阶段增加，这取决于生活垃圾的导水率。超孔隙水压力的消散比超孔隙气压力的消散要慢。利用合成城市生活垃圾在实验室进行了垃圾沉降试验。用数据对所建立的模型进行了验证，得到了满意的结果。根据实验结果，提出了一个新的生化降解模拟公式。(C) 2011 Elsevier Ltd.版权所有。
A new model entitled the coupled mechanical-hydraulic-gaseous effect and biochemical degradation for municipal solid waste (MSW) is proposed to simulate and predict the MSW settlement in this study. The coupled model can be used to simulate and predict the distributions of gas and water pressure as well as total waste settlement. Model verification indicates that because of degradation, the excess pore gas pressure increases rapidly and reaches a peak value in a short time, and then it dissipates gradually. But the excess pore water pressure may not always increase at the beginning, which depends on hydraulic conductivity of MSW. Dissipation of the excess pore water pressure is slower than that of the excess pore gas pressure. A waste settlement experiment was conducted in the laboratory using a synthetic MSW. The data was used to verify the developed model, which gave satisfactory results. Based on the experimental results, a new formula is proposed to simulate biochemical degradation. (C) 2011 Elsevier Ltd. All rights reserved.