| 考虑应力场作用的饱和黄土渗透特性研究 |
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| 引用本文： | 郭鸿,骆亚生,郭靖.考虑应力场作用的饱和黄土渗透特性研究[J].水土保持通报,2010,30(1):131-133. |
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| 作者姓名： | 郭鸿 骆亚生 郭靖 |
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| 作者单位： | 西北农林科技大学,水利与建筑工程学院,陕西,杨凌,712100 |
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| 基金项目： | 教育部新世纪优秀人才支持计划 |
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| 摘 要： | 了解三轴渗透试验和常规渗透试验的差异,探求围压产生的应力场对饱和黄土渗透特性的影响规律.对4个典型黄土地区兰州、洛川、杨凌、巩义的黄土试样充分饱和后分别做常规变水头渗透试验和三轴渗透试验.结果表明,随着围压和干密度的增大,饱和黄土的渗透系数减小.从试验得到,当干密度从1.45 g/cm3向1.65 g/cm3变化时,围压从100 kPa向400 kPa变化时,三轴渗透试验所得的渗透系数是常规渗透试验所得结果的0.881倍到0.161倍.
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| 关 键 词： | 黄土 应力场 渗透 |
| 收稿时间： | 2009/5/12 0:00:00 |
| 修稿时间： | 2009/6/30 0:00:00 |
Infiltration Characteristics of Saturated Loess by Considering the Role of Stress Field |
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| GUO Hong,LUO Ya-sheng and GUO Jing.Infiltration Characteristics of Saturated Loess by Considering the Role of Stress Field[J].Bulletin of Soil and Water Conservation,2010,30(1):131-133. |
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| Authors: | GUO Hong LUO Ya-sheng and GUO Jing |
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| Institution: | GUO Hong,LUO Ya-sheng,GUO Jing (College of Water Resources , Architectural Engineering,Northwest A & F University,Yangling,Shaanxi 712100,China) |
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| Abstract: | The difference between conventional permeability test and triaxial permeability test is studied and the characteristics of saturated loess permeability affected by stress field by confining pressure are analyzed.The loess samples from the four typical loess areas of Lanzhou,Luochuan,Yangling,and Gongyi were fully saturated to make conventional variable-head permeability test and triaxial permeability test.Results show that with the increases in confining pressure and dry density,the permeability coefficient... |
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| Keywords: | loess stress field infiltration |
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