荆江裁弯造成藕池河急剧淤积与分流分沙减少分析

The Analysis of Ouchi River's Heavy Deposit and Rapid Reduction of Discharge and Sediment Caused by Jingjiang Truncation

本文通过对下荆江裁弯前后实测水文资料的分析 ,说明裁弯后荆江水位下降造成了藕池河急剧淤积及分流分沙迅速减小 ,并且对淤积厚度和分流分沙减小值进行了框算 。

By analysis of the hydrological data before and after Jingjiang reach truncation of the Yangtze River, this article reveals that the water stage drawdown of Jingjiang after the truncation caused Ouchi river's heavy deposit and rapid reduction of discharge and sediment transport. The sedimentation thickness and the reduction ratio of both the discharge and sediment transport are roughly predicted, the predicted results agree with the field data well.