The Relationship between Soil Structure and Water Characteristics Based on Fractal Theory

被引：1
|
作者：
Dai L. [1 ,2 ,3 ]
Wang G. [1 ,3 ]
He Y. [1 ,3 ]
机构：
[1] Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang
[2] School of Water Resources and Environment, China University of Geosciences, Beijing
[3] Technology Innovation Center for Geothermal & Hot Dry Rock Exploration and Development, Ministry of Natural Resources, Shijiazhuang
来源：
Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences | 2021年 / 46卷 / 09期
关键词：
Fractal theory; Hydrogeology; Soil; Soil particle size distribution; Soil water characteristic curve;
D O I：
10.3799/dqkx.2020.345
中图分类号：
学科分类号：
摘要：
In order to understand the indicative effect of soil structure on its hydraulic properties, undisturbed soil samples from the Ziya-River basin in the North China plain were selected as the research objects. The soil water characteristic curve was measured by tension meter method, and the particle size distribution of soil samples was measured by laser particle size analyzer. The fractal dimension of soil particle size distribution was calculated based on fractal theory. Soil water characteristic curve was analyzed by experimental measurement and model verification. The fractal dimension of soil particle size distribution in the range of [10 μm, 50 μm] is the key parameter to characterize the characteristics of the significant rising section of soil particle size distribution, which is significantly correlated with the fitting parameters (a, b) of the power function model of soil water characteristic curve in the suction range of 0-80 kPa. The power function model expressed by the fractal form of soil water characteristic curve in the study area is: θ=100.78×(3-D)S(D-3)/3, and the fractal characteristics of soil structure can effectively indicate its hydraulic properties. © 2021, Editorial Department of Earth Science. All right reserved.
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收藏
页码：3410 / 3420
页数：10
相关论文
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