A hydro-bio-mechanical model for settlement and other behaviour in landfilled waste
A hydro-bio-mechanical model for settlement and other behaviour in landfilled waste
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DOI：
10.1016/j.compgeo.2007.02.004
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发表时间：
2007-01-01
影响因子：
5.3
通讯作者：
McDougall, John
中科院分区：
文献类型：
--
作者：
McDougall, John
提出了一个概念框架，用于分析填埋废物中与耦合水力、生物降解和机械行为有关的沉降和其他过程。水力模型为非饱和流模型。生物降解模型是一个两阶段厌氧消化模型，经修改，以考虑与水分含量，产品抑制，纤维素消化率和微生物控制有关的固体可降解物质的酶水解。该力学模型包括一个创新的解释的机械后果分解结合既定的配方的负载和蠕变引起的影响，以预测沉降下的负载和随着时间的推移。有限元实现可以模拟填充阶段和渗滤液控制实践。最后，通过与大型实验室垃圾压缩试验的比较，对该配方进行了测试。(c)2007爱思唯尔有限公司保留所有权利。
A conceptual framework for the analysis of settlement and other processes in landfilled waste in relation to coupled hydraulic, biodegradation and mechanical behaviour is presented. The hydraulic model is an unsaturated flow model. The biodegradation model is a two-stage anaerobic digestion model modified to account for enzymatic hydrolysis of solid degradable matter in relation to moisture content, product inhibition, cellulose digestibility and microbial controls. The mechanical model includes an innovative interpretation of the mechanical consequences of decomposition combined with established formulations of load and creep-induced effects to predict settlement under load and over time. A finite element implementation enables simulation of both the filling phase and leachate control practices. Finally, the formulation is tested by comparison with a large-scale laboratory waste compression test. (c) 2007 Elsevier Ltd. All rights reserved.