垃圾土降解规律及填埋场沉降计算分析

Degradation law of municipal solid waste and settlement calculation of landfills

通过垃圾土有机物降解试验,提出垃圾土有机物降解规律的计算公式和参数确定方法,并推导了垃圾土沉降计算模型.以深圳下坪垃圾填埋场为例,根据试验材料中的有机物和降解残余物含量以及特征降解时间,计算得到降解速率和降解量随时间变化规律.实例分析表明:变形计算模型能够反映压缩和降解引起垃圾土的变形特性.

Based on organic matter degradation experiments performed on solid waste, a calculation formula to obtain the law of organic matter degradation in solid waste and method for parameter determination were proposed, and a settlement calculation model for solid waste was deduced. With the Xiaping Municipal Solid Waste Landfill taken as an example, laws of the rate and quantity of solid waste degradation varying with time were obtained by means of experimental data of amounts of organic matter and residue of degradation in test materials and the characteristic time of degradation. Analysis shows that the deformation calculation model is capable of reflecting the deformation characteristics of solid waste induced by compression and degradation.