Experimental study on the evolution mechanism of ecological river channel and the performance of bank protection materials
In order to solve the problems of variable water and sediment transport,erosion and ecological degradation in ecological river channels,the lower reaches of Daling River in Chaoyang City,Liaoning Province were taken as the research object to study the changes in runoff and river evolution mechanism of ecological river channels.A straw fiber modified and solidified clay ecological bank protection material was proposed,and its shear strength was tested indoors.The results showed that with the increase of normal stress,the shear strength of straw fiber modified solidified clay samples at different curing ages showed a linear increasing trend.At the same curing age,the shear strength of samples with different amounts of straw fibers showed a linear increasing trend with the increase of normal stress.As the amount of straw fibers added increased,the shear strength of straw fiber modified solidified clay samples showed a trend of first increasing and then decreasing.Application practice has shown that straw fiber modified solidified clay blocks can quickly promote the restoration of riverbank vegetation communities,with significant bank protection effects and high shear strength,which can be lower than moderate and severe water erosion.
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