嘉陵江中游航电枢纽最高通航流量分析

Analysis of maximum navigable discharge of navigation-power junction on the middle reaches of Jialing river

结合新政、金溪和凤仪场等航电枢纽,用水工模型试验和船模试验相结合的方法对嘉陵江中游航电枢纽最高通航流量进行分析。嘉陵江中游为Ⅳ级航道,其枢纽设计最高通航流量为3 a一遇洪水对应的流量,但嘉陵江为典型的山区河流,其最高通航流量受通航水流条件的限制往往达不到上述规定。试验研究结果表明,新政、金溪和凤仪场枢纽保证船舶安全航行于口门区的最高通航流量均为8 000 m3/s。该结果可为嘉陵江中游航电枢纽统一调度运行提供借鉴。

Based on Xinzheng,Jinxi and Fengyichang projects on the Jialing river,we studied the maximum navigable discharge of navigation-power junction on the middle reaches of Jialing river by the hydraulic model test and ship-model test.The channel navigation grading of the middle reaches of Jialing river is class Ⅳ,so the flood frequency of the maximum navigable discharge is 33.3%,but the Jialing river is a mountainous river,the flood frequency of the maximum navigable discharge is less than 10%.Model test results indicate that the maximum navigable discharge of Xinzheng,Jinxi and Fengyichang are 8 000 m3/s respectively,which may serve as a reference for the operation of the navigation-power junction.