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三峡工程运用以来,长江荆江河段水沙条件发生较大改变,河床冲淤变化剧烈。沙市河段地处上荆江中段,属弯曲分汊河型,多年来深泓左右摆动和分汊段主支汊易位频繁,是荆江河势变化频繁、防洪形势严峻的河段之一。利用多年来,特别是三峡工程蓄水后的原型实测资料,首先分析了河段控制水文站的水沙特性及太平口分流分沙变化,并进一步分析了三峡工程运用以来沙市河段的河道冲淤演变特点及演变趋势,在此基础上综合考虑河段的防洪、航运、取水等需求,探讨了沙市河段未来的综合治理思路。
Since the Three Gorges Project was put into operation, the water and sediment conditions in the Jingjiang reach of the Yangtze River have changed greatly, and the erosion and sedimentation of the riverbed has changed drastically. Shashi River is located in the middle of the Jingjiang River, is a curved sub-tributary river type, over the years around Hong Wang and sub-section of the main branch of the sub-translocation frequent, is Jingjiang River changes frequently, flood control one of the harsh situation. Based on the measured data of the prototype after the Three Gorges Project has been stored for many years, this paper analyzes the characteristics of water and sediment of the control hydrological station in the Three Gorges Project and the changes of the diversion and sediment of the Taipingkou, and further analyzes the channel impulse of Shashi reach since the Three Gorges Project was put into operation Silt evolution characteristics and evolution trend, and on this basis, comprehensive consideration of Shahe reach the integrative management ideas of Shashi reach comprehensive consideration of flood control, shipping, water intake and other needs.