研究论文
彭绪亚,余毅.填埋垃圾体气体渗透特性的实验研究[J].环境科学学报,2003,23(4):530-534
填埋垃圾体气体渗透特性的实验研究
- Experimental study on air permeability of compacted MSW by a landfill lysimeter
- 基金项目:国家自然科学基金(项目编号:59978053);教育部“春晖计划”资助项目
- 彭绪亚
- 重庆大学城市建设与环境工程学院,重庆 400045
- 余毅
- 重庆大学城市建设与环境工程学院,重庆 400045
- 摘要:通过对模拟填埋垃圾体压实方向和与其垂直方向上气体渗透系数的测定,研究了在不同压实密度、不同含水率条件下垃圾体渗透特性的变化情况,实验表明:(1)在垂直压实的填埋垃圾体中,水平方向渗透系数平均值kh为垂直方向渗透系数kv的7.5~20.0倍,填埋垃圾体各向异性特征明显;(2)垃圾体渗透系数与压实密度、含水率的关系分别满足指数和线性递减规律,表明压实密度对渗透系数的影响较含水率大得多.
- Abstract:An experimental method for measuring air permeability (Kh、 Kv) of compacted MSW under various compacted densities and water contents by a landfill lysimeter was developed. The experimental results indicate that compacted MSW is a typical heterogeneous porous media and the average air permeability in the horizontal direction (kh ) is 7 5-20 0 times of that in the vertical direction compacted direction (kv); Air permeability decline with the increase of compacted density exponentially and with water content in linearly.
摘要点击次数: 1884 全文下载次数: 3309