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This paper classified, sorted and summarized the stability types of the Yellow River estuarine channel into the sea and briefly re-viewed the evolution and determination process of the standard threshold of artificial avulsion. In addition, the threshold system for the implementation of the flow path avulsion into the sea was initially constructed. The threshold value of water level, river length, sea area sediment capacity and the threshold value of allowable cumulative sediment volume in estuary were analyzed and calculated by the measured data. The results show that the threshold of current water level is 10.58 m when the current flow reaches 3 000 m3 / s, the threshold of river length is 89 km, the threshold of sea area sediment capacity is 7.219 billion m3 and the corresponding threshold of cumulative sediment inflow at Lijin Station is about 12.065 billion tons. [ABSTRACT FROM AUTHOR]

Ｔｈｉｓ ｐａｐｅｒ ｓｙｓｔｅｍａｔｉｃａｌｌｙ ｄｉｓｃｕｓｓｅｄ ｔｈｅ ｄｅｆｉｎｉｔｉｏｎ ｏｆ “ｅｓｔｕａｒｙ” ａｎｄ “ｆｌｏｗ ｐａｔｈ”， ｂｕｉｌｔ ｔｈｅ ｓｙｓｔｅｍａｔｉｃ ｆｒａｍｅｗｏｒｋ ｏｆ Ｙｅｌｌｏｗ Ｒｉｖｅｒ ｅｓｔｕａｒｙ ａｎｄ ｉｔｓ ｆｌｏｗ ｐａｔｈ ａｎｄ ｃｏｍｐｒｅｈｅｎｓｉｖｅｌｙ ｅｘｐｏｕｎｄｅｄ ｔｈｅ ｂａｓｉｃ ａｔｔｒｉｂｕｔｅｓ ａｎｄ ｂａｓｉｃ ｍｅａｎｉｎｇｓ ｏｆ ＂ ｅｓｔｕａｒｉｎｅ ｓｔａｂｉｌｉｔｙ＂ ａｎｄ ＂ ｓｔａｂｌｅ ｆｌｏｗ ｐａｔｈ＂． Ｉｎ ａｄｄｉｔｉｏｎ， ｔｈｅ ｄｅｖｅｌｏｐｍｅｎｔ ｐｒｏｓｐｅｃｔ ｏｆ ＂ｅｓｔｕａｒｉｎｅ ｓｔａｂｉｌｉｔｙ＂ ａｎｄ ＂ｓｔａｂｌｅ ｆｌｏｗ ｐａｔｈ＂ ｗａｓ ａｎａｌｙｚｅｄ ａｎｄ ｅｘｐｅｃｔｅｄ． Ｆｉｎａｌｌｙ， ｔｈｅ ｒｅｌａｔｉｏｎｓｈｉｐ ｂｅｔｗｅｅｎ ｔｈｅ ｅｓｔｕａｒｙ ｓｙｓｔｅｍ ａｎｄ ｔｈｅ ｓｔａｂｉｌｉｔｙ ｏｆ ｔｈｅ ｆｌｏｗ ｐａｔｈ ｓｙｓｔｅｍ ｗａｓ ｓｕｍｍａｒｉｚｅｄ． [ABSTRACT FROM AUTHOR]