用分层马斯京根法作河道洪水演算

Calculating Floods by Using Layered Muskingum Method

针对复式河道中用马斯京根法作洪水演算时,常出现洪水参数K、x值难以概化,整个过程线高、低水段很难拟合的情况,根据马斯京根法的基本原理.结合复式河道中漫滩部分水体的影响,提出了把整个入流过程按河槽形态的变化进行分层处理的分层马斯京根洪水演算方法。该法经在渭河临潼至华阴河段实际运用,其精度较传统马斯京根法有明显的提高。

According to the basic principle of Muskingum method and considering the effects of part overflowed water in a compound channel and aiming at flood values K and X that are always difficult to be conceptualized and the situation of high hydrograph is very difficult to be identified at a low water level section during the calculation of floods in a compound channel by Muskingum method. The method has been practically used at the section of Lintong-Huayin of the Wei River and its precision notably increased comparing with the traditional Muskingum method.