CAJ | 학술논문

近50年实测水沙资料分析表明,城陵矶水位变化取决于螺山-汉口河段冲淤量.三峡蓄水后,螺山-汉口河段冲淤量又取决于宜昌下泄和宜昌-城陵矶河段冲起的粗沙量(d>0.085mm)及汉口(扣除汉江)粗沙输沙量.通过估算三峡蓄水后宜昌-城陵矶河段粗沙冲刷量和汉口(扣除汉江)粗沙输沙量,表明螺山-汉口河段最大冲刷约9.5×10~8t,螺山流量为10000-60000m~3/s时,城陵矶水位下降约1.26-0.32m,并且随着螺山流量的增大,城陵矶水位下降幅度减小.
근50년실측수사자료분석표명,성릉기수위변화취결우라산-한구하단충어량.삼협축수후,라산-한구하단충어량우취결우의창하설화의창-성릉기하단충기적조사량(d>0.085mm)급한구(구제한강)조사수사량.통과고산삼협축수후의창-성릉기하단조사충쇄량화한구(구제한강)조사수사량,표명라산-한구하단최대충쇄약9.5×10~8t,라산류량위10000-60000m~3/s시,성릉기수위하강약1.26-0.32m,병차수착라산류량적증대,성릉기수위하강폭도감소.
By analysing field data of the last 50 years, it was found that the changes of water level at Chenglingji station depended on the erosion or deposition volume of Luoshan-Hankou reach. and after the operation of TGP,the erosion volume of Luoshan-Hankou reach came down to discharge of coarse sand (d>0.085mm) from Yichang station,Yichang-Chenglingji reach and Hankou (excluding Hanjiang ) station.Through estimating the erosion amount of coarse sand from Yichang-Chenglingji reach and the discharge of coarse sand from Hankou (excluding Hanjiang) station,it is found that the maximum erosion amount of Chenglingji-Hankou reach is 0.95 billion tons.When the discharge at Luoshan station is 10000-60000 m~3/s,the water level at Chenglingji will drop by 1.26-0.32m from before the operation of the TGP.Moreover, the decline of water level at Chenglingji station will decrease as the discharge at Luoshan increases.