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大型垃圾填埋场的衬垫系统、淋滤液排放收集系统和覆盖系统的设计必须考虑地基沉降及其差异沉降。针对垃圾填埋场大面积地基特性及时变的垃圾体荷载等工程特性,总结了一般垃圾填埋场和扩建垃圾填埋场由沉降及差异沉降引起的各种工程问题,并分析了引起垃圾填埋场沉降和差异沉降的各种因素。通过对扩建垃圾填埋场的实例计算分析发现,在设计过程中,大型垃圾填埋场的地基沉降和差异沉降对其衬垫系统设计控制性作用,对淋滤液排放收集系统和覆盖系统设计有着重要的影响。
Large landfill liner system, leachate discharge collection system and the design of the covering system must consider the foundation settlement and its differential settlement. In view of the characteristics of large-scale landfill foundation and timely load changes such as body load, the paper summarizes various engineering problems caused by settlement and differential settlement in general landfills and expanded landfills, and analyzes the causes of landfills Landfill and differential settlement of various factors. Through the example analysis of expanded landfill, it is found that in the design process, the foundation settlement and differential settlement of large-scale landfill are designed to control the performance of the liner system, and the design of the leachate discharge collecting system and the covering system important influence.