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长江中游砂卵石河段宜昌下游临江坪至大埠街最小维护水深明显低于其上下游邻近河段,成为中游航道维护尺度的一个瓶颈。本文通过对该河段航道情况进行分析,揭示了该河段碍航特性及主要碍航水道,并结合航道维护实际情况,对重点水道进行水位、尺度核查分析,确定水位核查标准,在此基础上探讨了提高长江干线宜昌—大埠街河段枯水期航道维护尺度的可行性,为后续的航道维护管理工作提供了参考依据。
The minimum maintenance water depth from Linjiangping to Dabu in the lower reaches of the Yangtze River sand-pebble section of Yichang is obviously lower than that of its adjacent upstream and downstream reaches, which has become a bottleneck in maintaining the waterway in the middle reaches. Based on the analysis of the navigation channel in the reach of the river section, the characteristics of the navigation channel in the reach of the river and the main obstructed waterway are revealed. Based on the actual conditions of the channel maintenance, the verification and analysis of the water level and the scale of the key channel are carried out to determine the water level verification standard. Based on this, Discussed the feasibility of improving the waterway maintenance measure during the dry season of Yichang-Dabujie section of the Yangtze River trunk, which provided a reference for subsequent waterway maintenance and management work.