FACTORS AFFECTING SLOPE STABILITY OF LANDFILL COVERS
Landfills have to be provided with steep cover slopes to maximize the quantity of waste which can be accommodated. Low interface shearing resistance between components of cover systems limits the steepness of such slopes. This paper examines the influence of various parameters, including soil thickness, seepage forces, seismic forces, height between berms, geomembrane roughness, provision of reinforcing element, provision of geocomposite drain etc. on the stability of slopes. The study reveals that in a cover system, the provision of a geomembrane influences the stability of the cover alongside slopes. The interfaces between the geomembrane and the clay beneath it or the geotextile above/below it are the weak locations at which slippage are likely to occur. Seepage force parallel to the geomembrane during monsoon as well as horizontal seismic loading during earthquakes also causes the factor of safety to reduce significantly. Provision of reinforcement in the soil above the geomembrane, and use of textured geomembrane, improves the stability of slope. Provision of berms at intervals of low heights also helps in increasing the stability of the cover system. Reducing the thickness of the soil above the geomembrane improves the stability of covers which have reinforcement.
geosysnthesis landfills covers stability
Manoj DATTA
Punjab Engineering College (Deemed University), Chandigarh, India
国际会议
International Symposium on Geoenvironmental Engineering(国际环境岩土工程研讨会
杭州
英文
620-624
2009-09-08（万方平台首次上网日期，不代表论文的发表时间）