EXPERIMENTAL EVALUATION OF ROUGHNESS COEFFICIENTS OF ANTI-EROSION GEOMATS WITH CRUSHED STONE AND VEGETATION FILLERS

A. BRAKENI, N.V. KHANOV, T.Y. ZHUKOVA

Abstract


Hydraulic structures are exposed to water erosion, so the creation of protective coatings for their slopes is currently relevant. To prevent the negative effects of water erosion on soil slopes, a number of measures are taken, including strengthening the upper layer of the slope with anti-erosion clothing. Geomats are common geosynthetics, which have found their application in construction.

This article presents and discusses the results of model studies of geomats of two anti-erosion coatings used for lining watercourse beds.

The studies were carried out in the laboratory of the Department of Hydraulic Structures of Timiryazev Academy on a hydraulic installation for testing coatings.

The calculation formulas, on the basis of which the values of roughness coefficients were experimentally obtained, are analyzed.

The conducted studies, which are devoted to the assessment of the roughness coefficient for the investigated anti-erosion protective coatings, have shown the possibilities of using fasteners in practice. A model installation for finding the hydraulic characteristics of the studied coatings is described and considered.

In the future, it seems advisable to conduct additional studies with the above-considered anti-erosion coatings to determine the permissible non-washing speeds.


Keywords


Slope, Erosion, Protection, Geomat, Crushed Stone, Vegetation, Roughness Coefficient.

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