In recent years,the undercutting of the riverbed under the Xinglong Hydrojunction Dam is more serious,and the navigation guarantee rate of 1 000-ton ships in the first-line ship lock is not high.In order to study the scale of second-line ship lock construction,it is necessary to analyze the passing capacity of existing locks and new ship locks according to the prediction of the traffic volume passing through the locks.According to the statistic data and the law of development,this paper predicts the composition of the ships passing through the locks in the future.The discrete event system simulation method was used to simulate the random arrival and stalling process of ships,and the system simulation model of ship lock group was constructed according to the random arrival order of ships.The calculation results show that the near-term and long-term one-way annual passing capacity of the Xinglong second-line ship lock is 31.98 million tons and 38.73 million tons,respectively.It is appropriate to take the effective length of the Xinglong second-line ship lock to be 300 m.
passing capacity of locksloading rate of vesselsdiscrete event system simulation method