Recent advances in seismic design of msw landfill considering stability.

Abstract

Pseudo-dynamic limit equilibrium-based analytical solutions to predict the sliding failure of MSW landfill under seismic conditions have been proposed. The proposed methodology incorporates the influences of time period and phase in the analyses. Various MSW landfills with sidehill configurations founded on (a) horizontal and partly sloping base, (b) sloping base and (c) stepped base are analysed. Results are presented in terms of yield acceleration coefficient. Neglecting seismic vertical acceleration brings about 14–28% increase in yield acceleration coefficient for the case of stepped base. The influence of landfill length to height (L/H) ratio is more prominent for the landfill founded on sloping base. Coefficient of yield acceleration is increased by 36%, with increase in L/H ratio from 2 to 10. These results with proposed methodology can be used for seismic design of MSW landfill considering sliding stability.