Research on differentiated charging and dam overturning subsidy strategies for inland river ship overflow congestion
In response to the problem of inland waterway navigation congestion caused by water conservancy hubs,a differentiated congestion charging and dam overturning subsidy mechanism is introduced to optimize the strategy of ship crossing the dam.Firstly,the linkage mechanism and service law of the"gate+dam flipping"dual mode dam crossing system were analyzed;Then,the cost of waiting for the ship to lock is embedded into the classic bottleneck model,and based on the time difference of the passing ship,a heterogeneous congestion charging mechanism is explored.Four subsidy schemes for dam overturning are proposed to optimize the freight diversion strategy of the dam system;Finally,taking the Three Gorges Dam as an example,the effectiveness of the model and mechanism was verified.The results show that under the heterogeneous congestion charge,the fixed cost difference and departure time preference of the two dam crossing modes will have a comprehensive impact on the decision of the ship owner to cross the dam.Among the four subsidy schemes for dam overturning,the congestion fee income is fully subsidized to the owners of indirect dam overturning ships,which can maximize the number of dam overturning ships,but will harm the interests of the owners of direct dam overturning ships;A subsidy scheme that balances efficiency and fairness can greatly promote shipowners to choose indirect dam overturning transportation methods without harming the interests of all parties,thereby effectively alleviating navigation congestion in water conservancy hubs.
water transportationnavigation congestionbottleneck modelheterogeneous con-gestion chargesubsidy for dam overturning
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