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根据三峡工程运用前后的实测水文资料,分析了藕池口分流分沙的年际、年内变化规律及其成因,并研究了三峡工程蓄水以来藕池口口门附近河段河势变化特点及其对分流分沙格局的影响。研究表明:影响藕池口分流分沙最直接的两个因素是口门附近水位和口门高程;三峡工程运用后藕池口年内分流和分沙量更集中在6—9月,10月的分流分沙量明显减少,但年分流分沙比变化不大;预计未来一段时间内藕池口分流分沙比将基本变化不大。
According to the measured hydrological data before and after the Three Gorges Project, the variation characteristics and causes of diversion and sediment distribution at Ouchi Lake were analyzed. The variation characteristics of the river regimes around the mouth of Ouchi Pass since the Three Gorges Project was impounded Impact of diversion and sediment pattern. The results showed that the most direct influencing factors of diversion and sediment flow in Ouchi Lake were the water level near the mouth and the mouth elevation. After the Three Gorges Project was put into operation, the shunt and sediment concentration of Ouchi Lake in the year was more concentrated in June-September. In October, The amount of sediment decreased obviously, but the annual diversion and sediment change did not change much. It is estimated that the diversion and sediment ratio of Ouchi Lake will not change much in the future.