Analysis on Bank Failure and River Channel Changes

Bank is often scoured by river flows and protection has to be made. Locations and mechanism of bank erosion should be better understood in order to protect bank failure thoroughly. This paper made a general description for bank failure in alluvial streams, and classified the bank failure into four types as shown in Fig.1 to 4. Thus in this paper presented an example analysis for Jiujiang reach located in the lower part of the Changjiang River, and pointed out that some places of the left bank of the central bar is suffered erosin or will be under erosion within a near future, and suggested that such places of unstable bank should be protected as soon as possible.