Experimental study on sand fixation and anti-encroachment of raffia
LI Jie
XU Guohui
LI Songyao
LI Anlong
CHEN Jiaming
HONG Bo
ZHENG Jianguo
Abstract：The nearshore hydrodynamic environment affects material transport and thus leads to changes in the seabed profile.Aquatic plants in the coastal zone can reduce wave damage to the beach by elimi-nating wave energy and slowing down the flow to promote siltation.Raffia grass is very resilient,smooth,watertight and extremely strong,and can be implanted on beaches as a natural material for beach erosion protection and sand fixation.In a wave flume test,raffia beds were laid on a sandy beach at a water depth of 35 cm to investigate the effects of the number of raffia beds and their sparsity on the beach profile under the action of regular waves of different wave heights.The test results showed that the sparse density and the number of tracts of raffia beds had obvious effects on the wave height reduc-tion and flow velocity mitigation.The appropriate increase in the sparse density of raffia beds and the number of tracts could obtain better flow mitigation and wave dissipation effects.
Keywords：rafflesiasand fixation and siltation promotionregular wavewave flume test
Publication Date：2025-04-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：7( 67-73 )