本文通过对长江下游三条航线的两万余个分节顶推船队方案的论证计算及分析,阐明了船队运输成本结构是确定推船功率和驳船队大小、船队经济航速的决定性因素之一,指出长江下游在近期内,采用540～1,800马力的推船和2,000吨级分节驳具有最好的经济效果。 Based on the demonstration and analysis of the program of pushing over 20,000 pieces of three lines of the three lower reaches of the Yangtze River, this paper illustrates that the cost structure of the fleet transportation is the decisive factor in determining the power of pushing the ship, the size of the barge and the economic speed of the fleet. First, it is pointed out that in the lower reaches of the Yangtze River in the near future, it has the best economic results to use a 540 to 1,800 horsepower push-boat and a 2,000-ton splitter.