簰洲湾演变机理及预测

运用蜿蜒性河流的演变理论 ,研究了笑牌 洲湾河段演变的一般性与特殊性规律。认为由于柯氏力的作用以及地质条件的差异 ,使该河段既有一般蜿蜒性河道演变规律 ,又有不对称、非规则演变特性。经近数十年来护岸加固工程的实施 ,河段相对稳定 ,不致自然裁弯。若采用人工裁弯 ,则是将洞庭湖、洪湖的洪灾风险转移到武汉市 ,此乃下策 ,不可取

Mechanism of evolution and forecast for Paizhouwan reach

Using the theory for evolution of meandering river, the common and especial evolution laws of Paizhouwan reach during more than 400 years were studied.Because there exist the action of Coriolis Force and some differences in geologic conditions,the reach developed from a tiny bending river to an asymmetric and abnormal meandering river.Although the length of neck of meadering river had been only 1.0 km 80 years ago,but cut?off had not happened. As a lot of revetment works have been put into operation,the river reach started relatively stable and cut?off doesn't appear at present. If an artificial cut?off was employed,the flood risk would be transfered from Dongting Lake and Honghu Lake to Wuhan City. It will be unseasonable and can not be accepted.