潼关河段射流清淤试验从 1 996年开始 ,至今已进行了 4年。 4年来试验规模不断扩大 ,内容不断增加 ,管理不断完善 ,研究也在不断深入。通过野外试验及室内研究工作 ,并结合汛期水量情况和潼关高程变化 ,证明在潼关河段清淤试验中“因势利导 ,疏通流路 ,理顺河势 ,集中水流 ,调整局部比降 ,提高水流输沙能力”的基本原则是基本符合实际的 ,遵循这样的原则 ,即使在水流条件不利和机械能力不强的情况下 ,清淤可以使潼关高程每年降低 0 .1～ 0 .3m The Jiao River section of the jet dredging test from 1996 onwards, has been carried out for 4 years. In the past four years, the scale of experiment has been continuously expanded, its contents have been constantly increasing, its management has been continuously improved, and research has been deepening. Through the field experiment and indoor research, combined with the flood season water quantity and the variation of Tongguan elevation, it is proved that in the dredging test of Tongguan reach, “make the best use, clear the flow path, straighten the river regime, concentrate the water flow, adjust the local ratio drop, Sand ability ”is basically in line with the basic principles, follow the principle that, even in the adverse water flow conditions and mechanical capacity is not strong case, dredging Tongguan elevation can make 0.1 ~ 0.3m