Study on sudden siltation and allowance for siltation in Huanghua port channel
In view of the fact that the Huanghua port channel had been suffering from the problems of sudden siltation affecting navigation,the siltation characteristics of Huanghua port channel was analyzed,the siltation in the channel under different return periods was calculated by mathematical modelling,and allowance for siltation applicable to the new environment of Huanghua port was determined.The results show that the siltation of the Huanghua port channel is mainly affected by high winds,and sudden siltation has the most serious impact on the navigation;it is a logarithmic relationship between the return period of extreme wind and the sudden siltation volume,with a larger increase in siltation as the return period increases for small return periods,and a gradual slowing of the increase for larger return periods;comprehensively considering the factors in many aspects,it can be used as the criteria for allowance for siltation of Huanghua port channel:to ensure that the channel does not hinder navigation,when there is a sudden siltation with return period of 15 years,or a sudden siltation with return period of 5 years for 2 times(or a sudden siltation with return period of 2 years for 3 times),on this basis,the recommended values of allowance for siltation in different sections is given.
Huanghua portmaintenance dredgingsudden siltationallowance for siltation
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