The first stage regulated project of deep-waterway in Yangtze Estuary is through building regulation structures to stabilize the inflow current and me flow field, and make the ebb tide's main current accord with the channel's axis in North Passage. Based on such result, we have succeeded in the construction and maintenance of the 8.5m deep waterway. Thanks to the exact management, we have got every unit's construction details, and after analysis, we have also got some imponant rules of channel's back silting. And in the waterway's maintenance management and the navigable depth's enactment, we also proceed persistently.
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