中文摘要：

对城市生活垃圾沉降特性进行了室内试验研究,自主研制了用于测定生活垃圾沉降的试验仪,测定了淋溶、温度、应力、自然4种不同工况条件下的垃圾土的沉降变形量。研究了不同工况条件下的垃圾土的沉降变化规律及垃圾土的变形机理和过程。拟合了垃圾土沉降随时间变化的预测曲线,分析了孔隙率与沉降速率的变化关系。试验结果表明：淋溶作用对垃圾沉降速率的影响最大,应力作用其次,自然状态最小。得到沉降速率与孔隙率变化关系,其预测模式可为理论研究提供本构模型。研究结果表明：通过渗滤液回灌可加速填埋场沉降,增加其库容量,缩短封场时间。垃圾填埋前通过压缩打包处理,可增加库容量,并减少二次污染。为垃圾填埋场的稳定性分析、变形计算及封场后作为建筑地基的可行性研究提供理论依据和技术支持。

英文摘要：

In order to study the characteristics of municipal solid wastes（MSW）,a waste settlement experiment instrument was independently designed.The amount of settlement was measured under four different working conditions,eluviation,temperature,loading and nature.The settlement variation regularity and distortion mechanism of MSW were researched.The prediction patterns between waste settlement and time were fitted and the relationship between porosity and settlement velocity was analyzed.Results show that the effect of eluviation on the waste settlement is obvious,and the effect of loading is less than eluviation,and the effect of nature is the least.The relationship between settlement velocity and porosity can provide the constitutive model for theoretical research.Research results show that eluviation can accelerate the settlement and increase storage capacity and reduce the maturity time of MSW.The research work provides a theoretical basis and technical support for the stability analysis and distortion computation in waste settlement,and the feasibility of the usage for building foundation after the closure of landfill site.