نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه مهندسی آب، دانشکده کشاورزی، دانشگاه تبریز
2 استاد- گروه مهندسی آب، دانشکده کشاورزی، دانشگاه تبریز
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
This research was conducted to minimize the dimensions and costs of spur dikes through
cutting the edge of them. For this propose, a physical model of spur dikes in series in river bend was
employed. The results of tests for spur dikes in series without any changes in their nose shape
showed that the local scour commenced from the nose of spur dikes. Generally, in all spur dikes
with new shape, as the spur dike surface reduced, the approach flow velocity in front of the spur
dike was also reduced. The new shape decreased the shear stress in the upstream of the spur dike
and reduced the scour depth. The results also showed that the new shape of the spur dikes
(L=5.5,ɵ=85,ɸ=30, e) was able to reduce the scour depth at the nose of the spur dike up to 89
percent.
کلیدواژهها [English]
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