نتایج جستجو برای: local scouring

تعداد نتایج: 532532  

ژورنال: علوم آب و خاک 2016
زارع, معصومه, هنر, تورج ,

The most important cause of concern about the stability of bridge foundation is the occurrence of scour around bridge piers. Therefore, different methods have been proposed to prevent or reduce scouring around bridge piers. The use of groynes is one of the modern methods to control and reduce local scour. In the present study, the effect of a solid groyne on reduction of the scour depth around ...

Journal: :Lecture notes in civil engineering 2021

The shallow foundations that often characterizes multi-span masonry arch bridges are highly vulnerable to the soil settlements typically induced by riverbed scouring. Consequently, monitoring of scouring effects is paramount importance ensure safe operation these river bridges. Within a recent collaboration between Politecnico di Milano and Regione Lombardia, bridge has been selected exemplify ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سمنان 1390

امروزه از مهمترین بحث هایی که بخش زیادی از زمان محققین را به خود اختصاص داده است، مباحث مربوط به آب به عنوان حیاتی ترین ماده بقای حیات انسان. تغییر در آب در دسترس می تواند واکنش جدی در پایداری آب زیست محیطی مناطق خشک و نیمه خشک ایجاد کند. لذا یکی از پر کاربردترین مباحث مربوط به هیدرولوژی بررسی هیدروگراف جریان می باشد که امکان مطالعه حجم سیلاب و میزان ذخیره حوزه پس از قطع بارندگی و نیز سهم آب زی...

Journal: :environmental health engineering and management 0
amir hussein javid graduate school of marine science and technology, science and research branch, islamic azad university, tehran, iran mohammad malakootian environmental health engineering research center and department of environmental health, kerman university of medical sciences, kerman, iran mohsen mehdipour environmental health in sbmu, member of environmental health engineering research center, kerman university of medical sciences, kerman, iran

background: entry of untreated wastewater of wool scouring factories has been associated with many environmental hazards because of high rate of pollution. presently effective treatment methods and reducing the costs of operation and maintenance from treatment units have always been under the attention of this industry owners. the aim of this survey is to present a suitable method for the treat...

Journal: :Journal of the Textile Machinery of Japan - Proceedings - 1965

Journal: :Journal of the Korea Academia-Industrial cooperation Society 2012

Journal: :Frontiers in Materials 2021

This study developed a discrete element simulation model based on the 2D particle flow code (PFC ), of which mesoscopic parameters were calibrated by indoor experiments, to investigate rainfall erosion damage residual soil slope in intermittently frozen area. It is be noted that runoff scouring action was simulated according equivalent method, particles given initial velocity, and water absorpt...

Journal: :Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 2020

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