Shear strength of surface soil as affected by soil bulk density and soil water content
文献类型：期刊论文
| 作者 | Zhang, B; Zhao, QG; Horn, R; Baumgartl, T |
| 刊名 | SOIL & TILLAGE RESEARCH
 |
| 出版日期 | 2001-05-01 |
| 卷号 | 59期号:3-4页码:97-106 |
| 关键词 | shear test at soil surface shear strength parameters penetrometer |
| ISSN号 | 0167-1987 |
| 通讯作者 | Zhang, B() |
| 英文摘要 | This paper proposes a new method to measure the soil strength parameters at soil surface in order to explain the processes of soil erosion and sealing formation. To simulate the interlocks between aggregates or particles within top 2 mm of the soil, a piece of sandpaper 130 particles cm(-2)) was stuck on the bottom face of a plastic box of diameter of 6.8 cm with stiffening glue and used as shear media. The soil strength for the soils from sandy loam to clayey loam was measured with penetrometer and the new shear device at soil surface at different bulk density and soil water content. The normal stresses of 2, 5, 8, 10 and 20 hPa were applied for the new shear device. The results indicated that significant effect of bulk density on soil strength was detected in most casts though the difference in bulk density was small, ranging from 0.01 to 0.09 g cm(-3). It was also indicated that the measurement with the new shear device at soil surface was reproducible. The changes in soil shear strength parameters due to changes in bulk density and soil moisture were explainable with the Mohr-Coulomb's failure equation and the principles of the effective stress for the unsaturated soils. The implications of the method were later discussed. (C) 2001 Elsevier Science B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | DETACHMENT ; SPLASH ; FLOW |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000168886000001 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2559157 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Zhang, B |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China 2.Univ Kiel, CAU, Inst Plant Nutr & Soil Sci, D-24118 Kiel, Germany |
| 推荐引用方式 GB/T 7714 | Zhang, B,Zhao, QG,Horn, R,et al. Shear strength of surface soil as affected by soil bulk density and soil water content[J]. SOIL & TILLAGE RESEARCH,2001,59(3-4):97-106. |
| APA | Zhang, B,Zhao, QG,Horn, R,&Baumgartl, T.(2001).Shear strength of surface soil as affected by soil bulk density and soil water content.SOIL & TILLAGE RESEARCH,59(3-4),97-106. |
| MLA | Zhang, B,et al."Shear strength of surface soil as affected by soil bulk density and soil water content".SOIL & TILLAGE RESEARCH 59.3-4(2001):97-106. |
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来源：南京土壤研究所
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