兰州黄土地区垃圾填埋场替代盖层可行性模拟分析
首发时间:2013-03-22
摘要:在半干旱地区,研究新型盖层代替传统盖层,以减少设计过度造成的浪费,是非常必要的。本文以兰州地区为例,试验得到兰州地区黄土土水特征曲线,求得田间持水量和萎蔫含水量;结合兰州地区2007 ~ 2008年气象资料,利用Hydrus-1D软件,进行模拟分析黄土盖层作为传统盖层的替代盖层的可行性,并且将黄土盖层与规范要求的传统盖层相对比。结果显示,31cm厚的黄土盖层理论上不仅可以满足阻止降水入渗的要求,而且相对与传统盖层成本低、施工简单。
关键词: 半干旱地区 黄土 替代盖层 土水特征曲线 Hydrus-1D
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The feasibility of simulation analysis about landfill replacement cover in Lanzhou loess area
Abstract:In semi-arid area, It is very necessary to research about new type covers to replace the traditional cover , in order to reduce the waste caused by excessive design. In this paper, taking Lanzhou as an example, the soil water characteristic curve of Lanzhou loess and field moisture capacity and wilting water content were obtained in laboratory. Simulation analysis was performed, combining with meteorological data in Lanzhou region in 2007-2008, and using Hydrus-1D software. Simulation analysis of loess cover layer as the feasibility of replacing traditional cover cap layer, and the loess cover and specification requirements the cover layer compared to traditional. The results showed, 31cm thick loess layer theoretically can meet the requirements to prevent the infiltration of precipitation, and compared with the traditional cover it is low cost and easy to construct.
Keywords: Semi-arid area Loess Replacement cover Soil water characteristic curve Hydrus-1D
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