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HYDRAULICS. ENGINEERING HYDROLOGY. HYDRAULIC ENGINEERING

INFLUENCE OF SEDIMENT SIZE ON LOCAL SCOUR DUE TO OBLIQUE WAVES NEAR BREAKWATER

Vestnik MGSU 9/2016
  • Sharova Vera Vladimirovna - Moscow State University of Civil Engineering (National Research University) (MGSU) postgraduate student, Department of Hydraulic Engineering, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe Shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Kantarzhi Igor’ Grigor’evich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, Professor, acting chair, Department of Hydraulic Engineering, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe Shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 108-118

The existing regulatory documents on estimation of wave scours behind vertical-type structures take account of only frontal wave arrival. Though in most cases of real structures waves arrive at an angle to a structure. The kinematics of the formed wave field and as a result the interaction with the structure and the foundation soil differ from that of frontal waves. The work is devoted to investigation of local scour due to the influence of oblique waves. The main aim of the article is to define the features of the formation of the local scour due to oblique waves in front of breakwater and to define its difference from local scour caused by frontal waves. In order to study a local scour experiments have been conducted in a wave basin. As a result of the experiments the shape and depth of the scour were obtained. Significant differences of scour formation caused by frontal and oblique waves at the breakwater were found out. The scoured hole caused by oblique waves looks like a line directed along the walls, in contrast to the scour caused by the influence of the standing waves. It was found out that in case of smaller angle of wave arrival to the breakwater the depth and width of scoured hole increase. The experimental investigations also showed that the size of soil particles influence the formation of scour hole.

DOI: 10.22227/1997-0935.2016.9.108-118

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