摘要
对垃圾填埋气污染控制与回收利用系统的规划设计 ,目前实际工程中通常采用现场抽气试验的方法确定相关技术参数。文章通过分析填埋气在垃圾体中迁移运动的特点 ,建立了在抽气条件下填埋气体的迁移运动模型 ,该模型综合反映了垃圾体内填埋气产生量、抽气量、垃圾体气体渗透系数、抽气井埋深、覆盖层厚度及特性对抽气效果的影响。利用该模型 ,可计算抽气时垃圾体中填埋气的压力分布 ,并可分析计算不同条件下抽气井影响半径、抽气井埋深等重要工程参数 。
In present engineering practice of landfill gas pollution control and its recovery, technical parameters such as extraction flow and radius of influence of a extraction well must be determined by field tests. A mathematical model for LFG migration under a vertical extraction well is established, which comprehensively reflects affects of several parameters including LFG generation rate, extraction flow, air permeability, buried depth of a extraction well and features of the cover layer. By using the model, pressure distribution of LFG around a vertical extraction well in a landfill can be calculated, the radius of influence of the well can also be determined.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2003年第1期92-95,共4页
Journal of Chongqing University
基金
国家自然科学基金 (项目编号 :5 99780 5 3 )
教育部"春晖计划"资助项目
