对内河挖入式港池发生淤积的原因进行分析，认为淤积主要是由口门处的回流及浑水异重流引起的。

Based on the analysis of the reason of sedimentation in dig-in basins, it is considered that sedimentation is brought primarily by circumfluence at the basin entrance and density flow.

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挖入式港池口门附近普遍存在回流运动，与此类似的情况是冲积河流低水头枢纽的引航道。

There exists universally reflow in the entrance of excavated dock, which is similar to approach channel of low head hydro-junction located in alluvial river.

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对内河挖入式港池发生淤积的原因进行分析，认为淤积主要是由口门处的回流及浑水异重流引起的。

This paper defines the "return flow" problem in first place, and then analyzes the impacts of return-flow on the process of water market.

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