نتایج جستجو برای: local scouring
تعداد نتایج: 532532 فیلتر نتایج به سال:
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 ...
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 ...
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...
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...
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...
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