| 非饱和土壤渗透系数空间不确定性对溶质运移的影响 |
| |
| 引用本文： | 李世峰, 白顺果, 王月影, 王彩侠, 李世华. 非饱和土壤渗透系数空间不确定性对溶质运移的影响[J]. 环境工程学报, 2015, 9(3): 1471-1476. doi: 10.12030/j.cjee.20150379 |
| |
| 作者姓名： | 李世峰 白顺果 王月影 王彩侠 李世华 |
| |
| 作者单位： | 1. 中国农业大学水利与土木工程学院, 北京 100083; 2. 河北农业大学城乡建设学院, 保定 071000; 3. 中国环境科学 研究院, 北京 100012; 4. 北京东方畅想建筑设计有限公司, 北京 100083; 5. 内蒙古乌海市农牧业局, 乌海 016000 |
| |
| 基金项目： | 国家自然科学基金资助项目(51208487) |
| |
| 摘 要： | 包气带渗透系数的不确定性是影响非饱和带溶质运移的主要因素。应用贝叶斯方法对非饱和土壤渗透系数进行前处理,使用Monte-Carlo方法模拟其空间不确定性,并通过HYDRUS-1D模型对溶质运移进行数值模拟,研究包气带渗透系数的空间不确定性对溶质运移的影响。结果表明,由于包气带渗透性的不确定性使得溶质浓度分布呈现明显的不确定性,包气带内不同点的浓度值相差很大。与忽略包气带土性参数空间不确定性的模拟结果相对比,考虑包气带渗透系数不确定性的模拟结果与实际情况更加接近,更具合理性和科学性。同时,根据模拟结果,对实际工作中进行地下水数值模拟时溶质初始浓度输入值的确定提出相应建议。
|
| 关 键 词： | 空间不确定性 包气带 溶质运移 数值模拟 |
| 收稿时间： | 2014-03-25 |
Effect of spatial uncertainty of unsaturated zone permeability coefficient on solute transport |
| |
| Li Shifeng, Bai Shunguo, Wang Yueying, Wang Caixia, Li Shihua. Effect of spatial uncertainty of unsaturated zone permeability coefficient on solute transport[J]. Chinese Journal of Environmental Engineering, 2015, 9(3): 1471-1476. doi: 10.12030/j.cjee.20150379 |
| |
| Authors: | Li Shifeng Bai Shunguo Wang Yueying Wang Caixia Li Shihua |
| |
| Affiliation: | 1. College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China; 2. College of Urban and Rural Construction, Agricultural University of Hebei, Baoding 071001, China; 3. Chinese Research Academy of Environmental Sciences, Beijing 100012, China; 4. Beijing Orient Perspective Engineering Design Co.Ltd., Beijing 100083, China; 5. Wuhai Agriculture and Animal Husbandry Bureau of Inner Mongolia, Wuhai 016000, China |
| |
| Abstract: | Spatial uncertainty of permeability is the primary factor which has significant impact on solute transport in unsaturated zone. In this study, Bayesian method was used in pre-processing of permeability coefficients and Monte Carlo method was used to simulate spatial uncertainty of permeability coefficients. Numerical model of HYDRUS-1D was used to simulate the solute migration in the unsaturated zone taking spatial uncertainty of permeability coefficient into account. The results showed that the distribution of solute concentration presented a significant uncertainty, and compared with the case of ignoring spatial uncertainty of permeability coefficients in unsaturated zone, it is more closer to the actual situation. Meanwhile, some suggestions about the value of initial concentration in numerical simulation of groundwater are given combining the simulation results. |
| |
| Keywords: | spatial uncertainty unsaturated zone solute transport numerical simulation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《环境工程学报》浏览原始摘要信息 |
|
点击此处可从《环境工程学报》下载全文 |
|
