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《ACTA SCIENTIAE CIRCUMSTANTIAE》 2000-03
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Numerical model of landfill gas migration and its application

CHEN Jiajun\+1,WANG Hongqi\+1,WANG Jinsheng\+1,NIE Yongfeng\+2,LI Guoding\+2\ (1.Institute of Environmental Sciences,Beijing Normal University,State Key Joint Laboratory of Environmental Simulation and Pollution Control,Beijing 100875;2.Department of Envi  
Based on the theory of fluid dynamics in porous media,a numerical model of landfill gas migration is developed under presumption of small variation of air pressure,negligible change of gas density.This model is characterized with wider range of its availability, such as any shape of domain and space variation of media property at landfill site.The influence of water content of the media on landfill gas migration is taken into account.In this paper,the comparison and analysis of landfill gas migration simulation are presented in assumptions of with landfill gas control system and without landfill gas control system,and the optimal pumpage of gas pumping well is calculated,thus the ratio of landfill gas collection is given correspondingly.Hence it can provide basis for designing of landfill gas control system and for environmental impact prediction and assessment of landfill gas migration.
【Fund】: 高等学校博士学科点专项科研基金! (980 0 2 712 )
【CateGory Index】: X705
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