岩土工程学报2013，Vol.35Issue(7)：1355-1361,7.
生物反应器填埋场中水平沟回灌渗滤液非饱和-饱和渗流分析
Unsaturated-saturated seepage analysis for leachate recirculation using horizontal trenches in bioreactor landfills
摘要
Abstract
The horizontal trench is one of the main methods which are available to recirculate leachates.To study the unsaturated-saturated seepage laws during leachate recirculation process,different flow control equations are used for the saturated/unsaturated zones in bioreactor landfills.The saturated Richards' equation is adopted as the flow governing equation in the saturated area of the waste mass.For the unsaturated area of the waste mass,based on the law of conservation of mass,the modified Darcy's law and the Elagroudy's settlement model,a new flow governing equation considering solid waste settlement is developed.Based on the two-dimensional saturated/unsaturated model which has been developed considering solid waste settlement,the migration laws of recirculated leachates are studied.The simulated results indicate that the various parameters (i.e.,settlement of MSW,pressure head,initial void ratio,etc.) have effects on the zone of impact,pressure head,water content of MSW and recirculation leachate volume per m of trench length.The design method of horizontal trenches is proposed for the bioreactor landfills.关键词
生物反应器填埋场/渗滤液回灌/水平沟/运移规律Key words
bioreactor landfill/ leachate recirculation/ horizontal trench/ migration rule分类
建筑与水利引用本文复制引用
冯世进,张旭..生物反应器填埋场中水平沟回灌渗滤液非饱和-饱和渗流分析[J].岩土工程学报,2013,35(7):1355-1361,7.基金项目
国家重点基础研究发展计划(973计划)课题(2012CB719803) （973计划）
国家自然科学基金项目(41072201,41172245,4122021) （41072201,41172245,4122021）
上海市浦江人才计划项目(11PJD021) （11PJD021）
