EXPERIMENTAL INVESTIGATION OF WATER WAVES GENERATED BY POROUS RIGID BLOCKS SIMULATING LANDSLIDES INTO DAM RESERVOIRS

Date

2023-9

Author

Karayama, Erhan Tarık

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

207
views

186
downloads

Cite This

Landslides into dam reservoirs can create large water waves, which may cause overtopping of the dam body. There are examples of dam failures after a landslide that caused overtopping. On the other hand, landslides became more frequent due to erosion and flash floods. Mechanical properties of the sliding mass, thickness, impact velocity, and slide angle are the critical parameters that affect wave heights generated in the reservoir. Waves produced by rigid porous blocks are investigated experimentally in a laboratory-scale hydraulic model constructed as a part of a more comprehensive research project. Rigid blocks with perforated surfaces are filled with granular material. The wheeled blocks are left over a ramp to run freely into a hydrostatic water reservoir. Water waves formed after the slide impact are recorded from several observation points, and the maximum wave heights are evaluated from digitally stored wave data by post-processing. It was found that a rigid block with 31 % perforated surfaces caused a reduction in wave heights by nearly 24 %.

Subject Keywords

Landslides, Dam reservoirs, Impulse waves, Porosity

URI

https://hdl.handle.net/11511/105314

Collections

Graduate School of Natural and Applied Sciences, Thesis