| 填埋场排水层淤堵条件下渗滤液最高水位研究 |
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| 引用本文： | 顾高莉,柯瀚,李育超,万晓丽,陈云敏.填埋场排水层淤堵条件下渗滤液最高水位研究[J].岩土力学,2012,33(4):1094-1102. |
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| 作者姓名： | 顾高莉 柯瀚 李育超 万晓丽 陈云敏 |
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| 作者单位： | 浙江大学 软弱土与环境土工教育部重点实验室，杭州 310058 |
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| 基金项目： | 国家自然科学基金项目(No.50978229);国际合作与交流重大项目(No.51010008);校长专项基本科研业务费专项资助项目(No.2010XZZX001);重点实验室科研业务费专项基本科研业务费专项资助项目(No.2010KYJD006);省创新团队浙江省重点创新团队支持计划资助(No.2009R50050);苏州市科技支撑计划项目“生活垃圾填埋场安全性管理关键技术研究项目”(No.520324) |
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| 摘 要： | 在Rowe和Fleming提出的用以计算淤堵时间简化模型的基础上，针对填埋场排水层淤堵时空分布特征，合理地作了进一步假设和推导，得到了可以反映淤堵发展的简化模型，推导出了排水层渗透系数的变化规律。采用水量平衡的单元分析方法，建立了淤堵条件下最高水位计算模型，获得了排水层最高水位深度的计算方法，并与稳态、瞬态方法进行比较。结果表明，无淤堵时得到的结果与瞬态结果一致，且都趋于稳态结果；淤堵较严重时水位受到显著影响，必须考虑淤堵。通过参数分析发现，前期渗透系数越小（后期越大）、排水距离越长、入渗速度越快、离子浓度越高，则淤堵对水位的影响越严重，同时提出考虑淤堵条件下改进排水系统的设计建议。
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| 关 键 词： | 填埋场 渗滤液排水层 渗透系数 淤堵 渗滤液最高水位 |
| 收稿时间： | 2010-10-11 |
Analysis of maximum liquid depth in landfill drainage layers under clogging conditions |
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| GU Gao-li
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KE Han
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LIYu-chao
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WAN Xiao-li
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CHEN Yun-min.Analysis of maximum liquid depth in landfill drainage layers under clogging conditions[J].Rock and Soil Mechanics,2012,33(4):1094-1102. |
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| Authors: | GU Gao-li KE Han LIYu-chao WAN Xiao-li CHEN Yun-min |
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| Institution: | MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310058, China |
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| Abstract: | Based on the simplified model for estimating the clogging time which was made by Rowe and Fleming,the assumptions and derivations are developed reasonably due to the time-space distribution of clogging in drainage layers;and a simplified model is obtained which can reflect the development of clogging and the variation of hydraulic conductivity of the drainage layers.Using the cell analysis of water balance,a method for calculating maximum liquid depth in drainage layers which is based on the maximum liquid depth clogging model is proposed.Comparing with the steady and transient results,it is shown that no clogging results are in accordance with the transient results,which all tend to the steady results.And the clogging must be considered when clogging is serious which may affect the liquid depth markedly.Parameter analysis shows that the greater previously(the smaller later) the hydraulic conductivity,the longer the drainage distance,the faster the infiltration rate,the higher the concentration,the more serious the impact of clogging on liquid depth.At the same time design suggestions are proposed for improving the drain |
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| Keywords: | landfill leachate drainage layer hydraulic conductivity clogging maximum liquid depth |
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