针对Rampura 雨水泵站开敞式进水池可能出现的流态问题, 采用1: 6 几何比尺建立了正态整体物理模型, 对 其进行水力试验研究。通过对典型工况进行试验, 分析了进口段、前池段、泵室段和喇叭口处不同断面的水流流态、 流速分布及沿程水位变化。结果表明, 各部位设计与布置较为合理, 运行中没有出现明显的不利流态, 但低水位运 行会对流态造成一定影响。该物理模型测试方法合理、可行, 对于类似泵站的设计测试具有一定的参考价值。

In terms of the flow reg ime pr oblems of o pen suction sump in Rampur a rainw ater pumping station, a norma l physical model was built wit h 1: 6 ratio o f g eometr ic scale for the study and its hydraulic test w as conducted. Sev eral ty pical wo rking co nditions wer e analyzed to determine the flow r egime, velocity distr ibut ion, and w ater lev el var iatio n in the intake section, fo re2 bay sectio n, pump chamber sectio n, and different sections o f bell mouth wer e obtained. The r esult s showed that the design and lay out o f each sect ion are reasonable and unsatisfactor y flow regime does no t occur during the o per ating perio d o f the rainw ater pumping statio n, but the flow reg ime can be affected under the operation of low water level. T he physical mo del test is feasible and reasonable, w hich can pro vide refer ence for the design of simila r pump statio ns.

河南省高等学校青年骨干教师资助项目( 2013GGJS2197)