The Calculation of Maximum Saturated Depth in Landfill with Continuous-slope Configuration Drainage System

Zhang Jinli; Wang Tiejun

doi:10.3969/j.issn.1007-2993.2009.04.006

Volume 23 Issue 4

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Zhang Jinli, Wang Tiejun. The Calculation of Maximum Saturated Depth in Landfill with Continuous-slope Configuration Drainage System[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2009, 23(4): 187-192. doi: 10.3969/j.issn.1007-2993.2009.04.006

Citation:

Zhang Jinli, Wang Tiejun. The Calculation of Maximum Saturated Depth in Landfill with Continuous-slope Configuration Drainage System[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2009, 23(4): 187-192. doi: 10.3969/j.issn.1007-2993.2009.04.006

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The Calculation of Maximum Saturated Depth in Landfill with Continuous-slope Configuration Drainage System

doi: 10.3969/j.issn.1007-2993.2009.04.006

Zhang Jinli¹,
Wang Tiejun²

1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China;
2. Institute of Geotechnical Engineering, School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, China

Received Date: 2009-04-27

Abstract

Abstract

Maximum saturated depth is an important parameter in designing of landfill leachate dramage systems. Dased on the groundwater flow continuity principles, Dupuit assumptions and extend Dupuit assumptions, phreatic surface governing equations were established over the landfill with slope liner in continuous-slope configuration drainage system, respectively. These equations were solved by numerical calculation. Though computation and analysis of change parameters, the results indicate that Dupuit assumptions can be used to calculate the maximum saturation depth as the slope of landfill liner is less than 10%. When geonet is employed in continuous-slope configuration drainage system, transmissivity of geonet and slope of landfill liner are important influence factors for maximum saturation depth, hydraulic conductivity of protect layer and impingement rates for efficiency of drainage system can't be ignored. At the same time, compared the efficiency of continuous-slope with saw-tooth configuration's in level landfill liner, the results show the former is better than the latter.
- landfill,
- maximum saturated depth,
- continuous-slope configuration