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Use of a filterless antiwave revetment
Conclusions 1. The formation of cavities under a concrete revetment in the wave-breaking section is explained primarily by disturbance of the contact between the rubble filter layer and embankment sand caused by the pulsating flow occurring in the reverse filter upon impact of waves on the slab. Therefore, placing under slabs a coarse single-layer filter of rubble or gravel only worsens the operating conditions of such revetments with respect to wave loads and can be the cause of the formation of cracks in the slabs and destruction of the revetment. 2. There are grounds to recommend the construction of filterless antiwave revetments for dams and embankments constructed of medium- and coarse-grained sandy soils if a relative density D>0.4–0.5 is provided. For embankments of fine-grained and loamy soils, instead of rubble filters one should place filters of mineral-fiber materials, being guided by OST 33-10-73. 3. Taking into account the great economic effect from the use of filterless antiwave revetments we must step up research to substantiate their use, and presently to proceed from small experimental sections to their wider use in hydraulic construction.
Use of a filterless antiwave revetment
Conclusions 1. The formation of cavities under a concrete revetment in the wave-breaking section is explained primarily by disturbance of the contact between the rubble filter layer and embankment sand caused by the pulsating flow occurring in the reverse filter upon impact of waves on the slab. Therefore, placing under slabs a coarse single-layer filter of rubble or gravel only worsens the operating conditions of such revetments with respect to wave loads and can be the cause of the formation of cracks in the slabs and destruction of the revetment. 2. There are grounds to recommend the construction of filterless antiwave revetments for dams and embankments constructed of medium- and coarse-grained sandy soils if a relative density D>0.4–0.5 is provided. For embankments of fine-grained and loamy soils, instead of rubble filters one should place filters of mineral-fiber materials, being guided by OST 33-10-73. 3. Taking into account the great economic effect from the use of filterless antiwave revetments we must step up research to substantiate their use, and presently to proceed from small experimental sections to their wider use in hydraulic construction.
Use of a filterless antiwave revetment
Belyashevskii, N. N. (author)
Hydrotechnical Construction ; 11 ; 921-924
1977-09-01
4 pages
Article (Journal)
Electronic Resource
English
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