平原水闸消能设计的简化计算方法初探

Preliminary Discussion of Simplified Calculation Method for Energy Dissipation Design of Plain Sluice

为更加便捷地计算消力池深度,提出简化消能计算方法。简化消能计算方法不是以闸门开启高度计算过流流量,而是在保持闸上最高蓄水位的情况下,以设计最大流量为上限,直接按分级流量进行消能计算,计算主要参数包括出池河床水深、单宽流量、总水头、跃后水深、收缩水深、出池落差等,根据分级计算结果最终确定消力池深度。简化消能算法取消了繁琐的水闸开度对应的流量计算,减小了计算工作量,运用较为简便。实例计算结果表明,简化消能计算方法基本能够满足平原水闸消能设计要求,但在水闸实际运行过程中应加以控制并总结经验,归纳出既能保证工程安全,又便于管理运用的操作程序。

In order to calculate the depth of the stilling basin conveniently,the paper proposed a simplified method for calculating the energydissipation. In this method,while maintaining the highest water level on the gate,we didn＇t use the gate opening height to calculate thedischarge,however,it used the maximum design discharge as an upper limit;we used hierarchical discharge in the dissipation calculation.The main calculation parameters included：water depth of the outlet of the basin,discharge per unitwidth,total potential energy,and waterdepth after hydraulic jump,waterdepth of shrink section,water drop of the outlet of the basin,etc. According to the calculation results ofhierarchy,we could determine the depth of the stilling basin.Simplified algorithm of dissipation canceled the complicated flow calculation ofsluice opening,reduced the amount of calculation,and applied conveniently. The results indicate that the simplified calculation method canmeet the requirements of the sluice energy dissipation in plain area,but the application should be controlled and experience should be learnedduring the actual operation of the sluice,to sum up procedures which can enable the project secure and conveniently management.