نتایج جستجو برای: swcc
تعداد نتایج: 108 فیلتر نتایج به سال:
The particle-size distribution (PSD) is the key information required by several models for prediction of soil-water characteristic curve (SWCC). performance these has been extensively investigated in literature; however, limited studies have undertaken with respect to uncertainty associated SWCC predictions resulting from variability PSD. This study aims investigate influence PSD SWCCs using fi...
In this paper, two artificial intelligence (AI) models (i.e., neural networks (ANN) and multivariate adaptive regression splines (MARS)) were developed using cumulative percentiles from the grain-size distribution (GSD) curve as input information to predict soil-water characteristic (SWCC). The importance of each variable was testified different sensitivity analyses. results show a strong corre...
Soil water characteristic curve (SWCC) is one of the most essential hydraulic properties that play fundamental role in various environmental issues and management. SWCC gives important information for movement, soil behavior, infiltration, drainage mechanism, affecting circle aquifer recharge. Since world’s freshwater withdrawals go irrigation uses, decoding beneficial, as it affects saving thr...
Soils at the ground surface experience multiple cycles of drying and wetting. On drying, soils shrinkage cracks may appear. The development depends on tensile strength soil. Such increase permeability soil can cause slopes earth structures to fail due rainfall. Several models have been proposed for unsaturated considering effect matric suction. However, are either cohesionless (coarse-grained) ...
Highway pavement design using soft clay soil as a subgrade is always great challenge and can cause problems such roadbed instability settlement. To overcome this problem, the knowledge of characteristic should be studied first because it needs to considered during phase pavement. This study was conducted investigate engineering properties that used potential material. Some laboratory tests were...
توزیع اندازه ذرات (psd) خاک یکی از مهم ترین ویژگی های فیزیکی خاک های معدنی است. از این ویژگی می توان برای پیش بینی و تخمین خواص هیدرولیکی خاک ها مانند منحنی مشخصه رطوبتی خاک و توابع هدایت هیدرولیکی اشباع و غیراشباع استفاده نمود. مطالعه پدیده های مربوط به آب در خاک، مستلزم آگاهی از مقدار آب موجود و وضعیت انرژی آن (به ترتیب رطوبت و مکش) در خاک است. منحنی مشخصه رطوبتی خاک (swcc) رابطه ی میزان رطوب...
The unsaturated soils mechanics is strongly related to the suction phenomenon that occurs between solid soil particles, which changes when water content does not remain constant. soil-water characteristic curve (SWCC) provides information and of soil; obtain such a different direct indirect methods can be used. In this research for sands obtained through implementation filter paper test. For pu...
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