利用混合语言编程、JavaScript脚本和PHP语言等技术，开创性地将河流水沙数学模型、可视化前后处理技术和计算机网络技术三者结合起来，初步实现了洪水演进、河道冲淤等水沙数学模型模拟的在线计算过程；并以长江中游下荆江藕池至监利河段为例，给出了该河段河道维护与管理在线计算平台的演示成果。

The paper innovationally adopts the combination with the visualization and pre ?and post processing techniques, computer network technology, mixed use of JavaScript programming language and PHP script technology. On the basis of the above method, the online calculation of flood evolution and sediment transport simulation is preliminarily realized. Finally, a demonstration example about Jianli Ouchi river stretch maintenance and management online calculation platform for the middle reach of Changjiang River is given.