【摘要】 采用水流数学模型对三峡大坝至葛洲坝两坝间河段的通航水流条件进行研究,结果表明,枯水期日调节条件下两坝间河段的水面比降和流速变化均不影响本河段万吨级船队的航行条件。洪水期间大流量条件下两坝间航道水流条件十分复杂,在葛洲坝坝前水位为66.00 m、流量大于30 000 m3/s时,两坝间的水流条件不能满足现状条件下万吨级船队的通航;随着流量的增加,通航卡口段也随之增加,主要位于水田角、喜滩上下、石牌、偏脑等局部河段。研究成果可为两坝间航线选择与航道治理提供参考。更多还原

【Abstract】 The mathematical models for flows were employed to study the navigable flow conditions of the river reach between Three Gorges Dam and Gezhouba Dam.The results show that,in dry season,the variations of water surface slope and flow velocity of the river reach due to daily regulation have no influences on the navigable flow conditions for ten-thousand-tonnage fleet.However,under high flows in flood season,the navigable conditions are complicated.The flow conditions of the river reach between the two dams can not meet the need of ten-thousand-tonnage fleet when the water level at Gezhouba dam site is 66.00 m in height and the water discharge is larger than 30A4#000A4#m3/s,and with the increase of the water discharge,more navigation bottleneck reaches occur,such as Shuitianjiao,Xitan,Shipai and Piannao.The research results will be some references for the selection of navigation routes and the channel regulation.更多还原