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力学与实践 ›› 2009, Vol. 31 ›› Issue (6): 53-56.doi: 10.6052/1000-0879-2008-592

• 应用研究 • 上一篇    下一篇

城市垃圾填埋场沉降的力学模型研究

孙洪军 梁力 王学志 赵丽红   

  1. 东北大学;辽宁工业大学 东北大学 辽宁工业大学
  • 收稿日期:2008-12-04 修回日期:2009-04-22 出版日期:2009-12-10 发布日期:2009-12-08

STUDY ON MECHANICAL MODEL OF SETTLEMENT IN MUNICIPAL SOLID WASTE LANDFILL

sun hong-jun li liang xuezhi wang lihong zhao   

  • Received:2008-12-04 Revised:2009-04-22 Online:2009-12-10 Published:2009-12-08

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.

关键词: 城市垃圾填埋场, 力学模型, 荷载, 蠕变, 生物降解

Abstract: 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.

Key words: municipal solid waste landfill, mechanical model, load, creep, biodegradation