کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4712513 1638098 2016 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An experimental study on the effects of physical, mechanical, and electrochemical properties of natural cohesive soils on critical shear stress and erosion rate
ترجمه فارسی عنوان
یک مطالعه تجربی بر اثرات خواص فیزیکی، مکانیکی و الکتروشیمیایی خاک های همجوشی طبیعی بر تنش برشی و میزان فرسایش
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات ژئوشیمی و پترولوژی
چکیده انگلیسی

The field of cohesive sediment erosion is still not fully understood, in large part due to the many soil parameters that affect cohesive sediment erodibility. In this study several undisturbed natural soil samples were taken from different river banks in Manitoba, Canada. The samples mainly contained clay and silt with 24–94% clay content, thus the study covered a wide range of cohesive soil. For each sample 13 different physical, mechanical, and electrochemical properties were measured. Critical shear stress of erosion and erosion rate were quantified using an Erosion Measurement Device (EMD). Stepwise regression was used to find the variables most significantly correlated to critical shear stress and erosion rate, which led to the development of a new empirical equation to estimate the critical shear stress of cohesive soils. It was found that the critical shear stress is highly correlated with cohesion, while both cohesion and sodium adsorption ratio (SAR) had significant influence on the erosion rate.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Sediment Research - Volume 31, Issue 1, March 2016, Pages 1–15
نویسندگان
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