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首页> 外文会议>International PhD Symposium in Civil Engineering vol.2; 20040616-19; Delft(NL) >Use of moisture profiles and lysimetry to assess evapotranspirative cover performance
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Use of moisture profiles and lysimetry to assess evapotranspirative cover performance

机译：使用湿度曲线和溶度测定法评估蒸散覆盖性能

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摘要

The performance of evapotranspirative landfill covers, often used in municipal and hazardous waste disposal applications, is quantified in this study using basal percolation and soil moisture content data obtained over six years through a comprehensive field monitoring program. Specifically, this paper presents applications of soil moisture profiles and numerical modeling to verify percolation measured by a lysimeter. Inconsistencies between the recorded lysimeter percolation and the results of the moisture profile and numerical modeling analyses suggest both a potential capillary break between the lysimeter and the cover soil as well as preferential flow through isolated flow channels. Nonetheless, the utility of moisture profiles and numerical modeling is stressed. Numerical modeling using boundary conditions from meteorological data and initial conditions from moisture profiles was found to provide a realistic base-case scenario for performance assessment. Moisture profiles provide continuous feedback of cover performance without interfering with flow conditions.
机译：在这项研究中，使用了六年的基础渗滤和土壤水分含量数据，通过全面的现场监测程序对经常用于市政和危险废物处置应用的蒸发蒸散掩埋覆盖物的性能进行了量化。具体而言，本文介绍了土壤水分剖面和数值模型的应用，以验证用溶渗仪测得的渗流。记录的渗漏计渗滤与水分分布和数值模拟分析结果之间的不一致表明，渗漏计和覆盖土壤之间可能发生毛细破坏，并且优先流经隔离的水流通道。尽管如此，仍然强调了水分分布和数值模拟的实用性。发现使用来自气象数据的边界条件和来自湿度剖面的初始条件进行数值建模可为性能评估提供一个现实的基础案例。水分分布提供了覆盖性能的连续反馈，而不会干扰流动条件。

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