Investigation of Scours on a Physical Model of the Hričov Weir Using Photogrammetry

Pavúček, Martin and Rumann, Ján and Dušička, Peter (2022) Investigation of Scours on a Physical Model of the Hričov Weir Using Photogrammetry. POLLACK PERIODICA : AN INTERNATIONAL JOURNAL FOR ENGINEERING AND INFORMATION SCIENCES, 17 (1). pp. 105-110. ISSN 1788-1994 (print); 1788-3911 (online)

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Abstract

Scours creation in riverbed at the Hričov weir is a permanent problem since its construction. It is caused by the shortened stilling basin of the weir. In almost all cases of flow control at the weir the energy is not dissipated sufficiently. A 3D physical model was built in the hydraulic laboratory to investigate the measures for reduction of the scour creation. To simulate uneven loads on the downstream riverbed, a flood discharge controlled by the weir in symmetric and asymmetric operations was used for simulations. The scours were evaluated using short-range photogrammetry for contactless measurements. Based on this method digital models of the riverbed for each simulation were created and the scours were assessed to determine the effect of the investigated measures on scour reduction.

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