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Mechanics in Engineering ›› 2009, Vol. 31 ›› Issue (6): 53-56.doi: 10.6052/1000-0879-2008-592

• Application study • Previous Articles     Next Articles

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

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