Application of an image processing-based algorithm for river-side granular sediment gradation distribution analysis

2021-09-01
Azarafza, Mohammad
Nanehkaran, Yaser A.
Akgün, Haluk
Mao, Yimin
Determining grain-size and grading distribution of river-side sediments is very important for issues related to lateral embankment drift, river-side nourishment, management plans, and riverbank stability. In this regard, experimental procedures such as sieve analysis are used in regular assessments which require special laboratory equipment that are quite time consuming to perform. The presented study provides a machine vision and image processing-based approach for determining coarse grained sediment size and distribution that is relatively quick and effective. In this regard, an image image processing-based method was used to determine the particle size of sediments as justified by screening tests which were conducted on samples taken from the riverside granular sediments. As a methodology, different grain identification stages were applied to extract sediment features such as pre-processing, edge detection, granular size classification and post-processing. According to the results of the grain identification stages, the applied technique identified about 35% sand, 55% gravel and 7% cobble which is approximately near to the screen test results which were determined as 30% sand, 52% gravel, and 5% cobble. These results obtained from computer-based analyses and experiments indicated that the utilised processing technique provided satisfactory results for gradation distribution analysis regarding riverside granular sediments.
ADVANCES IN MATERIALS RESEARCH-AN INTERNATIONAL JOURNAL

Suggestions

Numerical solution to kinematic wave equation for surface runoff analysis using satellite based DEM data
Yıldırım, Hasan Hüseyin; Aydın, İsmail; Department of Civil Engineering (2020-9)
Modeling of rainfall runoff over large catchment areas is a critical step in flood analysis to estimate the time-wise variation of discharge at the outlet of hydrological basin. Outlet hydrograph of a basin is generally estimated using empirical formulations based on measurements from previous rainfall events. However, these empirical methods may not correctly model the surface flow dynamics over large and complex geometries. In this study, a fully distributed numerical model is developed that can deal with...
Comparison of regression and kriging techniques for mapping the average annual precipitation of Turkey
Bostan, P.A.; Heuvelink, G.B.M.; Akyürek, Sevda Zuhal (Elsevier BV, 2012-10)
Accurate mapping of the spatial distribution of annual precipitation is important for many applications in hydrology, climatology, agronomy, ecology and other environmental sciences. In this study, we compared five different statistical methods to predict spatially the average annual precipitation of Turkey using point observations of annual precipitation at meteorological stations and spatially exhaustive covariate data (i.e. elevation, aspect, surface roughness, distance to coast, land use and eco-region)...
Quantitative approach to rapid seismic evaluation of slab-on-girder steel highway bridges
Dicleli, Murat (1996-01-01)
A quantitative approach follows for developing a methodology for the rapid seismic evaluation and ranking of slab-on-girder steel highway bridges. In the development of this methodology, analytical expressions are introduced to calculate the seismically induced forces and displacements in bridge components, first assuming that damage to bearings is not acceptable and then removing this constraint. In the latter case, the superstructure is assumed to become unrestrained and slide on its supports. The seismic...
Application of recent optimization algorithms on slope stability problems
Azizi, Sadra; Pekcan, Onur; Department of Civil Engineering (2018)
Stability analysis of earth slopes in general involves determining the minimum factor of safety (FS) associated with the most critical failure surface. This objective is too challenging to accomplish considering the broad diversity of slope problems in geometry, geotechnical parameters of the soil, location of the groundwater table, and condition of the external loadings. Robust optimization techniques, however, have recently performed well in determining safety factors of various man-made and natural slope...
Utilization of Ankara Clay for Sanitary Landfill Bottom Liners Turkey
Akgün, Haluk (2005-01-01)
This study aims at determining the geotechnical properties and the compaction permeability characteristics of a clayey soil sample obtained from the Göbaşi site of the Ankara region in an attempt to assess its suitability as a compacted clay liner. The soil sample was permeability tested at about 3% wet of its optimum moisture content using the falling head compaction permeameter apparatus. The expected leakage rates through clay-only and composite geomem-brane-clay liners constructed with compacted Ankara ...
Citation Formats
M. Azarafza, Y. A. Nanehkaran, H. Akgün, and Y. Mao, “Application of an image processing-based algorithm for river-side granular sediment gradation distribution analysis,” ADVANCES IN MATERIALS RESEARCH-AN INTERNATIONAL JOURNAL, vol. 10, no. 3, pp. 229–244, 2021, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/92030.