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| 基于粒径分维值检验的松散介质渗透系数空间估值——以河北平原为例 | |
| 引用本文： | 罗晓娟,徐恒力,叶含春.基于粒径分维值检验的松散介质渗透系数空间估值——以河北平原为例[J].地质科技情报,2007,26(1):87-90. |
| 作者姓名： | 罗晓娟 徐恒力 叶含春 |
| 作者单位： | 1. 中国地质大学,研究生院,武汉,430074 2. 中国地质大学,环境学院,武汉,430074 3. 塔里木大学农业工程学院,新疆,阿拉尔,843300 |
| 基金项目： | 国家计委防灾、减灾项目 |
| 摘 要： | 为了克服松散含水介质非均质性各向异性对介质渗透系数的求取所带来的困难,以水动力条件为线索,利用互相关法寻找同一时代地层及同一时代地表水的主、次流方向.在主流方向上,建立了石家庄-束鹿-衡水段介质颗粒粒径随距离递变的数学模型,并以此为基础推求无钻孔地段的粒径.同时,运用分形理论,计算了中、上更新统地层主流方向平均粒径空间分布的分维值,并将其作为检验粒径估值正确与否的判据.通过不同岩性的渗透系数-深度模型,实现了用平均粒径预测渗透系数的全过程. |
| 关 键 词： | 主流方向 渗透系数 分维值 松散介质 |
| 文章编号： | 1000-7849（2007）01-0087-04 |
| 修稿时间： | 2006-05-04 |
Prediction of Hydraulic Conductivity of Porous Media Based on the Test of Fractal Dimension:A Case Study in Hebei Plain |
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| LUO Xiao-juan,XU Heng-li,YE Han-chun.Prediction of Hydraulic Conductivity of Porous Media Based on the Test of Fractal Dimension:A Case Study in Hebei Plain[J].Geological Science and Technology Information,2007,26(1):87-90. | |
| Authors: | LUO Xiao-juan XU Heng-li YE Han-chun |
| Institution: | 1. Graduate School ;2. School of Environmental Studies ,China University of Geosciences , Wuhan 430074 ,China; 3. College of Agricultural Engineering, Tarim University ,Alar Xinjiang 843300, China |
| Abstract: | It is difficult to predict hydraulic conductivity of the loose porous media for its spatial heterogeneity. The present study found out the layers in the same period according to the positive correlation between grain size and hydrodynamic force, and presumed the main and minor surface water flow directions in different periods using cross-relation method. Power model between grain size and distance in the main direction was then established for Shijiazhuang-Sulu-Hengshui. Based on the model,the grain size in the sites is estimated without observation data. Fractal dimension of grain size on the main flow direction was accounted to test the estimation. According to the estimation results ,hydraulic conductivity of the loose porous media is predicted using K-H model. |
| Keywords: | main flow direction hydraulic conductivity fractal dimension loose porous media |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |