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| 土壤持水特征测定中的容重变化及其确定方法 | |
| 引用本文： | 吕殿青,邵明安,王全九.土壤持水特征测定中的容重变化及其确定方法[J].水利学报,2003,34(3):0110-0114. |
| 作者姓名： | 吕殿青 邵明安 王全九 |
| 作者单位： | 1. 中科院水利部,水土保持研究所,陕西,杨陵712100 2. 中科院水利部,水土保持研究所,陕西,杨陵712100;中科院,地理科学与资源研究所,北京100101 3. 中科院,地理科学与资源研究所,北京100101 |
| 基金项目： | 国家重点基础研究发展规划(G2000018605)，国家自然科学基金重大研究计划(90102012)项目资助 |
| 摘 要： | 利用离心机法测定了黄土高原6种典型质地土壤的吸力、容重和重量含水量三者的关系，分析了土壤持水特征测定中的容重变化特征；借用土壤水分特征曲线幂函数模型和土壤收缩特征线性模型获得容重与吸力间幂函数关系，并利用试验资料进行检验；提出了确定土壤持水特征测定中容重变化的三点法，该方法所获得土壤水分特征曲线与实测结果极为吻合，精度较高。 |
| 关 键 词： | 土壤持水特征 容重 离心机法 三点法 |
| 文章编号： | 0559-9350(2003)03-0110-06 |
Bulk density changing during measuring soil water retention characteristics and its determining method |
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| LU Dian qing.Bulk density changing during measuring soil water retention characteristics and its determining method[J].Journal of Hydraulic Engineering,2003,34(3):0110-0114. | |
| Authors: | LU Dian qing |
| Abstract: | Relationship among weight content,suction and bulk density was measured by using centrifugal method for six types of soils ranging from sand to silt clay loam.The power function between bulk density and suction was derived on the basis of power model of soil water retention characteristics and linear model of soil shrinkage characteristics and also proved with measured data.The three points method determining bulk density during measuring soil water retention characteristics was put forward.Soil water characteristic curve obtained by the three points method was matched with measured data well and its precision was high. |
| Keywords: | soil water retention characteristics bulk density cent rifugal method three points method |
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