长江口航道整治工程大型专用作业船舶作业天数的统计和分析

Statistics and Analysis of Operational Days of Large-Sized Purpose-Built Working Vessels for Waterway Regulation Works in Changjiang Estuary

针对长江口深水航道治理工程施工范围广阔、自然条件恶劣、大型专用作业船舶众多的特点,分析了影响水上作业天的主要因素,论述了提高水上有效作业天的工程措施,并对二期工程水上作业天进行了统计与分析,得出了2艘大型专用施工船的可作业天数和实际有效作业天数。

In view of the vast working range, execrable natural conditions and a large number of large-sized purposedbuilt working vessels on the site for the waterway regulation works in the Changjiang Estuary, the major factors affecting the operational days of these large working vessels at the sea are analyzed and the engineering measures to improve the effective offshore operational days of working vessels are expounded. Statistics and analyses are made of the offshore operational days of the working vessels for the second phase of the waterway regulation works in the Changjiang Estuary to work out the workable days and effective operational days of two large-sized purpose-built working vessels.