摘要
以多孔介质流体动力学理论为基础，充分考虑了气体密度随压力变化气体的特点，建立了包气带气体运移数值模型。该模型适用范围更广。模型中考虑了填埋场中介质含水量变化对气体运移的影响。通过与先前气体流动数学模型的模拟对比分析了考虑气体完全可压缩和近似可压缩条件下的差别。从而可为填埋场释放气体、土壤油污染气脱去除的环境影响预测和评价及控制系统的设计。
Based on thetheory offluid dynam ics in proous m edia,a num ericalm odelofgas m igration in aerated zone is developed with the consideration of gas density change due to pressure variation.This m odelis characterized by the widerrange ofits applica bility.The influence ofwater contentofthe m edia on landfillgas m igration is taken into ac- count.The accuracy ofthisnumericalm odelisanalyzed by com parison with m odeling results by previousm odelin con- sideration ofthe difference betw een com plete com pressibility and approxim ate com pressibility ofgas.Thus itprovides basis for the designing and m anagem ent oflandfillgas controlsystem or soilvapor extraction system in soilpollution control.
出处
《水文地质工程地质》
CAS
CSCD
2000年第2期41-43,共3页
Hydrogeology & Engineering Geology
基金
高等学校博士学科点专项科研基金!资助项目(98002712)
