| 基于水分特性的采煤沉陷地充填复垦黄河泥沙容重优选 |
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| 引用本文： | 王晓彤,胡振琪,梁宇生,陈洋.基于水分特性的采煤沉陷地充填复垦黄河泥沙容重优选[J].农业工程学报,2018,34(16):258-264. |
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| 作者姓名： | 王晓彤 胡振琪 梁宇生 陈洋 |
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| 作者单位： | 中国矿业大学(北京)土地复垦与生态重建研究所 |
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| 基金项目： | 国家自然科学基金资助项目（41771542） |
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| 摘 要： | 为探究黄河泥沙容重与水分运动特征参数的关系,优选黄河泥沙充填复垦的最佳容重设计,运用土壤的概念和性质进行类比研究。根据不同容重条件下饱和含水率与饱和导水率的实测值、van Genuchten模型中进气吸力相关参数?和经验参数m的模拟值,分别建立经验模型,相关系数0.992~0.995(P0.01),决定系数0.938~0.990,理论值与实测值相对误差均控制在10.77%以内。研究结果:1)饱和含水率与饱和导水率均随黄河泥沙容重的增大而减小;2)黄河泥沙中非毛管孔隙度占比高,渗透初期非饱和导水率大,在低吸力段迅速失水;3)黄河泥沙容重为1.5 g/cm3毛管孔隙度最大,更有利于土壤有效水分的保持。在黄河泥沙充填复垦采煤沉陷地的实践过程中对黄河泥沙充填层进行合理的机械压实,使容重控制为1.5 g/cm3,能够在一定程度上提高黄河泥沙的持水性,实现黄河泥沙充填复垦耕地生产力水平的提高。
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| 关 键 词： | 含水率 孔隙度 复垦 黄河泥沙 充填复垦 |
| 收稿时间： | 2018/3/27 0:00:00 |
| 修稿时间： | 2018/7/10 0:00:00 |
Optimal bulk density infilling reclamation of mining subsidence land with Yellow River sediment based on water characteristics |
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| Wang Xiaotong,Hu Zhenqi,Liang Yusheng and Chen Yang.Optimal bulk density infilling reclamation of mining subsidence land with Yellow River sediment based on water characteristics[J].Transactions of the Chinese Society of Agricultural Engineering,2018,34(16):258-264. |
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| Authors: | Wang Xiaotong Hu Zhenqi Liang Yusheng and Chen Yang |
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| Institution: | Institute of Land Reclamation and Ecological Restoration,China University of Mining and Technology (Beijing), Beijing 100083, China,Institute of Land Reclamation and Ecological Restoration,China University of Mining and Technology (Beijing), Beijing 100083, China,Institute of Land Reclamation and Ecological Restoration,China University of Mining and Technology (Beijing), Beijing 100083, China and Institute of Land Reclamation and Ecological Restoration,China University of Mining and Technology (Beijing), Beijing 100083, China |
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| Abstract: | |
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| Keywords: | moisture porosity reclamation Yellow River sediment filling reclamation hydraulic conductivity porosity |
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