Subsoiling in some heavy clay soils of Egypt |
| |
| Institution: | 1. University of São Paulo, Department of Structure Engineering, São Carlos, Brazil;2. University of São Paulo, Department of Production Engineering, São Carlos, Brazil;3. Department of Chemical Engineering, School of Engineering, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain |
| |
| Abstract: | Four soil profiles were selected to represent the heavy clay soils of alluvial and lacustrine origin. The locations studied had been subsoiled at least once during the year before the investigation. Field observations and laboratory analyses were carried out to ascertain the subsoiling effect on the soil profile properties. For further confirmation, soil penetration tests were performed on material from all the sites studied. The data revealed that subsoiling is not to be recommended in the Vertisols or the heavy clay soils adjacent to the northern Delta lakes of Egypt because these soils develop abundant natural cracks of 3–5 cm in width and 50–70 cm in depth. There are no impervious layers in the top 60 cm of the soils in the study area, and there is no evidence of soil compaction throughout the top 70 cm in all the sites studied. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
