城市垃圾填埋场沉降的力学模型研究  

STUDY ON MECHANICAL MODEL OF SETTLEMENT IN MUNICIPAL SOLID WASTE LANDFILL

作　　者：孙洪军[1,2] 梁力[1] 赵丽红[2] 王学志[2] 

机构地区：[1]东北大学资源与土木工程学院,沈阳110006 [2]辽宁工业大学土木建筑工程学院,锦州121001

出　　处：《力学与实践》2009年第6期53-56,共4页Mechanics in Engineering

基　　金：国家自然科学基金资助项目(50709013)

摘　　要：从城市垃圾填埋场沉降的机理出发,以经典力学中应力-应变之间的关系为基础,建立起城市垃圾填埋场在载荷、蠕变和生物降解耦合作用下沉降的力学模型,并分别确定在载荷、蠕变和生物降解作用下屈服表面应力增量的表达式.通过填埋场沉降的实例计算,该模型得到了较为满意的预测结果.Landfill is a cost-effective method for urban waste disposal. Prediction of landfill settlement is the most essential issue in order to increase the municipal solid waste landfill capacity and improve the utilization of landfill. In this paper, a mechanical model of the settlement under the combined action of load, creep and biodegradation is proposed based on the settlement mechanism of municipal solid waste landfill and the relationship between stress and strain in classical mechanics. The expression of yield surface stress increment is obtained under load, creep and biodegradation. The example computed of landfill settlement shows that the model is satisfactory in forecasting.

关 键 词：垃圾填埋场 力学模型 载荷 蠕变 生物降解 

分 类 号：TU449[建筑科学—岩土工程]