Seismic stability analysis of tapered landfill cover systems: considering seepage forces

سال انتشار: 1395
محل انتشار: کنفرانس بین المللی عمران، معماری، مدیریت شهری و محیط زیست در هزاره سوم
کد COI اختصاصی: SDUMEW01_398
زبان مقاله: انگلیسی
تعداد مشاهده: 403

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نویسندگان

Afshin Khoshand

Assistant Professor at Faculty of Civil Engineering, K.N. Toosi University of Technology, Tehran, Iran

Ali Fathi

MSc. student at Faculty of Civil Engineering, K.N. Toosi University of Technology, Tehran, Iran

Milad Zoghi

MSc. student at Faculty of Civil Engineering, K.N. Toosi University of Technology, Tehran, Iran

چکیده

One of the most common and economical methods for waste disposal is Landfilling. Landfill cover system is one of the main components of landfills which prevent waste exposure to the environment by creating a barrier between the waste and surrounding environment. Landfill cover system stability and integrity is a fundamental part of the design, construction, and maintenance of landfills. Tapered cover system can be considered as a practical method for improvement the stability of landfill cover however the simultaneous effect of seismic and seepage forces in tapered cover system has not been studied. This paper provides a framework based on limit equilibrium method to evaluate the stability of tapered cover system under seismic and seepage (parallel and horizontal seepage force patterns) loading condition. Also, a sensitivity analysis is performed to illustrate sensitivity of Factor of Safety (FS) to different design parameters. The results reveal that FS is so sensitive to friction angle of the cover soil, slope angle beneath the geomembrane, and interface friction angle between cover soil and geomembrane among studied design parameters

کلیدواژه ها

Seismic stability, landfill cover system, tapered, seepage

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