A method for determining the tidal water level in the design of a long channel alternated with shoals and troughs

Abstract

The invention discloses a determination method of tide-bound water level for tidal flat and channel alternate long channel design. The method comprises the steps that 1, the crucial dredging section of a channel is determined; 2, generalized design of a hull form navigation tide-bound process is conducted; 3, virtual tide level stations are arranged along the channel, tide level values of the virtual stations are calculated, and time discretization is conducted on the tide level of each station; 4, the optimal tide-bound process of single tide process and the tide-bound water levels corresponding to each shallow section are calculated by means of a multi-station joint test algorithm; 5, cumulative frequency analysis is conducted on the tide-bound water levels of all tide processes all year round, and the tide-bound water level cumulative frequency curve of each tide-bound shallow section and the corresponding tide-bound water level design value are acquired. According to the determination method of the tide-bound water level for the beach-groove alternate long channel with variable bottom elevation, ship navigation, tidal wave propagation and channel water depth which are matched with one another in a coupling mode are considered at the same time, the problem that in the whole process of past tide-bound water level calculation of the long channel, high tide level resources cannot be fully utilized by means of the same bottom elevation is solved, calculation accuracy is better than that of existing graphing methods, channel infrastructure and maintenance and dredging work amount can be effectively reduced, and the construction investment is lowered.

Description

technical field [0001] The invention relates to a method for determining the tidal water level of waterway design, in particular to a method for determining the tidal water level of long waterway design with intersecting beaches and grooves, and belongs to the field of water transport technology. Background technique [0002] The tidal water level is one of the key parameters for determining the bottom elevation of channel design. Regarding the calculation of the tidal water level, due to the relatively short channel mileage and tidal riding duration in the early days, only the calculation of the tidal water level at a single station is required, and the calculation method is relatively mature. With the increase in the scale of coastal ports and large-scale ships, the scale of channel construction increases, the tidal section of the channel becomes longer, and there are many tide stations along the route. There are obvious deficiencies in the existing standard methods. In 2...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to overcome the deficiency that the same design bottom elevation cannot make full use of the high tide level resources in the calculation of the tidal water level of the long channel in the past, and to provide a method that can simultaneously consider ship navigation, tidal wave propagation and water depth of the channel. The method of determining the water level of the long waterway with variable bottom elevation and tidal level between the coupled and matched beaches and troughs can effectively reduce the amount of waterway dredging works, the amount of dredging works for later maintenance, and save engineering investment

Images