三峡水库运用后荆江典型河段冲淤变化计算分析  

Research on Variations of Typical Lower Jingjiang River Reach after Three Gorges Project Operation

作　　者：董耀华[1] 卢金友[1] 范北林[1] 黄悦[1] 

机构地区：[1]长江科学院河流研究所,武汉430010

出　　处：《长江科学院院报》2005年第2期9-12,共4页Journal of Changjiang River Scientific Research Institute

基　　金："九五"三峡工程泥沙问题研究项目;国家自然科学基金重大项目"洪水特性与减灾方法研究"资助(50099620)

摘　　要：采用FLUVIAL 12模型,进行了三峡水库运用60a长江下荆江藕池口至监利河段冲淤变化预测计算,并讨论了FLUVIAL 12模型的适用性。计算分析表明:三峡水库运用后,藕池口至监利河段呈现先微淤、后冲刷、冲刷平衡后再缓慢回淤的冲淤过程和规律,最大冲刷量7.1～11.2亿t,出现在水库运用55a左右;监利、调关、石首3站枯水流量5000m3/s时水位下降3.13～4.71m,洪水流量30000m3/s时水位下降0.42～2.77m。Based on the imported FLUVIAL-12 Model, The developing tendencies for the Ouchikou-Jianli reach of the typical Lower Jingjiang River in regard to river channel aggradation and degradation, cross-sections configuration and feature stages within 60-year operation of the Three Gorges Project (TGP) have been predicted and analyzed by calculations. Results show that, within the 60-year TGP operation, the Ouchikou-Jianli reach will experience 4 sequent fluvial periods of subtle deposition, substantial degradation, transient equilibrium, and slow recovery, the maximum erosion amount is ((7.1)-(11.2)) 10~8t emerging around the fifty-fifth year, and the maximum stage lowering is (3.13)-(4.71 m) under discharge (5 000 m^3/s) and (0.42)-(2.77 m) under discharge 30 000 m^3/s respectively.

关 键 词：三峡水库 荆江 FLUVIAL-12模型 河道冲淤 河流最小能耗理论 

分 类 号：TV14[水利工程—水力学及河流动力学]