三峡蓄水后城陵矶水位变化初步研究  

Preliminary Study on the Changes of Water Level at Chenglingji Station after the Impoundment of the Three Gorges Project(TGP)

作　　者：唐金武[1] 李义天[1] 孙昭华[1] 郭小虎[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《应用基础与工程科学学报》2010年第2期273-280,共8页Journal of Basic Science and Engineering

基　　金：国家重点基础研究资助项目(2003CB415200)

摘　　要：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9.5×108t,螺山流量为10000—60000m3/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.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） Hankou reach is 0.95 station, it is found that the maximum erosion amount of Chenglingji- 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.

关 键 词：三峡工程 城陵矶 水位 冲刷 

分 类 号：TV14[水利工程—水力学及河流动力学]