As the soil in the hydraulic reclamation project of the Jiangsu Binhai Liquified Natural Gas（LNG）Project，clay has a high bulk density and is difficult to transport，ultimately imposing high requirements on the operation of ship officers. During the long-distance transport in the above project，pipe blockage and pipe explosions occur frequently. According to the working conditions of the project，this paper analyzes the data before and after pipe blockage and explores the change law of parameters by theoretical calculation and full-scale ship experiments. On this basis，the paper summarizes the causes of pipe blockage and pipe explosions and optimizes the pipe layout and the ship officers’ operation. This paper solves the problems of frequent pipe blockage and pipe explosions in clay transport with a long discharge distance and enhances the time utilization rate and productivity of ships.