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| 考虑大孔隙的土壤入渗模型 | |
| 引用本文： | 解河海,冯杰,冯青,曾碧球.考虑大孔隙的土壤入渗模型[J].水利水电科技进展,2011,31(5):35-38. |
| 作者姓名： | 解河海 冯杰 冯青 曾碧球 |
| 作者单位： | 1. 珠江水利科学研究院,广东广州,510611 2. 中国水利水电科学研究院,北京,100038 3. 聊城市水利工程总公司,山东聊城,252000 |
| 基金项目： | 水利部社会公益性项目(200801033); 中国水利水电科学研究院科研专项(资集1017); 国家自然科学基金(50609005) |
| 摘 要： | 为了研究大孔隙对土壤入渗及侵蚀的影响,建立了一个土壤入渗数学模型。模型包括2个流区:①基质流区,该区水流由达西公式模拟;②大孔隙流区,运用运动波方程以及与大孔隙形状相关的参数进行水流模拟。大孔隙流区和基质流区水量交换在质量守恒方程中作为汇项,而在基质流区连续方程中则是作为源项来考虑,大孔隙壁对基质的入渗通过扩散方程来模拟。通过土柱试验验证模型对入渗结果的模拟,试验观测土柱底部的出流量,用TDR探针在规则时段间隔记录土壤含水量。验证结果表明所建立的模型能够充分模拟土柱底孔出流过程线和含水量的时间变化。 |
| 关 键 词： | 大孔隙 基质 达西公式 运动波 土柱试验 |
| 修稿时间： | 2011/10/20 0:00:00 |
Infiltration model for soils considering macrospores |
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| XIE He-hai,FENG Jie,FENG Qing,ZENG Bi-qiu.Infiltration model for soils considering macrospores[J].Advances in Science and Technology of Water Resources,2011,31(5):35-38. | |
| Authors: | XIE He-hai FENG Jie FENG Qing ZENG Bi-qiu |
| Affiliation: | XIE He-hai1,FENG Jie2,FENG Qing3,ZENG Bi-qiu1(1.Pearl River Hydraulic Research Institute,Guangzhou 510611,China,2.China Institute of Water Resources and Hydropower Research,Beijing 100038,3.Liaocheng Hydraulic Engineering Corp.,Liaocheng 252000,China) |
| Abstract: | In order to study the influences of macropores on infiltration and erosion of soils,a mathematical model consisting of two flow domains was established for the infiltration of soils,that is,the soil matrix with flows modeled by means of the Darcy equation and the macropores with flows modeled by use of a kinematic wave equation and the parameters related with the shape of the macropores.The water exchange between the macropore domain and the matrix domain was regarded as the sink term in the macropore mass ... |
| Keywords: | macropore matrix Darcy formula kinematic wave soil column experiment |
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