【摘要】 三峡工程建成后,三峡-葛洲坝之间的河段是宜昌至重庆河段船舶航行最困难的航段之一。建立了该河段的三维水流数值模型,计算三峡不同下泄流量下的三维流场,并根据计算结果与适航条件分析其适航区域。研究结果表明,当下泄流量不大于25 000 m3/s时,两坝间河段基本能满足万吨级船队的通航水流条件;当流量大于此值时,将会出现碍航区域,且随流量的增加,万吨级船队通航水流条件逐渐恶化。若适当提高通航标准,则通航流量可加大到45 000 m3/s。更多还原

【Abstract】 The reach between Three Gorges Dam and Gezhouba Dam is one of the most difficult waterways for navigation from Yichang to Chongqing.With the establishment of the numerical model for 3-D flow,the 3-D flow field in this reach is calculated and the navigable area is analyzed according to the calculated results and navigable conditions.The result shows that this reach can basically satisfy the navigable conditions of the 10thousand-tons fleet when the discharge is no more than 25 000 m3/s;on the contrary,danger area will appear and navigable conditions will be deteriorated as the discharge increases.If the standard for navigation can be properly raised,the flux for navigation shall increase to 45 000 m3/s.更多还原