Analysis method of channel window period based on voxel structure and mike model

An analysis method and window period technology, which is applied in particle and settlement analysis, suspension and porous material analysis, material analysis, etc., can solve the problems that ships cannot enter the port, and strong backflow areas are easily formed at embankments, so as to improve accuracy Effect

Active Publication Date: 2022-05-17
NANJING HYDRAULIC RES INST
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the double guide dike has solved the problem of ships entering the port, there are still problems: 1. A strong backflow area is easily formed at the head of the embankment, and the cross flow makes it impossible for ships to enter the port.
2. Although most of the time the channel is excavated to meet the water depth of the ship entering the port, but at low tide, the ship still needs to wait for the high tide to meet the water depth before entering the port

Method used

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  • Analysis method of channel window period based on voxel structure and mike model
  • Analysis method of channel window period based on voxel structure and mike model
  • Analysis method of channel window period based on voxel structure and mike model

Examples

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Embodiment 1

[0039] The object of research and analysis in this example is the radiation sand ridge group. The sea area of ​​the radiation sand ridge group starts from the south of the Yangtze River Estuary to the north of the waste Yellow River estuary. The complex tidal wave system forms a unique radial landform. In this embodiment, it is preferably Sheyang Estuary, such as figure 1 As shown, the Sheyang estuary is located in the middle of the submerged delta of the abandoned Yellow River and the radiation sand ridge group. It is the place where the river and the ocean meet. Sand is the carrier, and it is transported from the estuary to the sea under complex dynamic conditions. The estuary is prone to form underwater sand bars, and it is difficult to meet sufficient water depth conditions to accommodate ships entering the port. Build a parallel waterway 2 perpendicular to the north-south coastal flow at the mouth of the river.

[0040] It should be noted, figure 1 The middle dotted lin...

Embodiment 2

[0060] like image 3 and Figure 4 As shown, this embodiment is improved on the basis of Embodiment 1. The establishment of the three-dimensional landform model is through the combination of point source, line source and area source, and the three-dimensional coordinates of the channel 2 and the sediment at the bottom of the channel radiation range are obtained. Line source detection is formed on each virtual flight zone in the waterway 2, or surface source detection is formed in the waterway 2, and the point, line and surface are combined to detect the entire waterway 2; the structure of the detection network 5 is used to detect the radiation range of the waterway.

[0061] In this embodiment, several connecting lugs 35 are added in the circumferential direction of the buoy 31 for connecting the traction rope 4, so as to prevent the detection device 3 from moving or scattering due to the influence of the tide. In this embodiment, the use of the traction rope 4 is not limited...

Embodiment 3

[0068] This embodiment is improved on the basis of Embodiment 1 and Embodiment 2. The change of the tidal current is related to the date of the lunar calendar, taking into account the tidal current conditions on the first day and the fifteenth day of each month. Every month, two days before and after the first day of the lunar calendar and two days before and after the fifteenth day of the lunar calendar, there will be natural tides at the mouth of the river, and there will be a spring tide around the first and fifteenth day of the lunar calendar. The tide water depth, tide flow speed and tide flow direction during the spring tide are subject to change. The astronomical spring tide formed in combination with the lunar calendar can be used as a typical example to provide advance analysis and prediction of the channel window period and provide early warning.

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Abstract

The invention discloses a channel window period analysis method based on a voxel structure and a Mike model, comprising the following steps: S1, constructing double guide dikes at the estuary of an underwater sand bar, and excavating a channel; S2, constructing a channel and a channel The three-dimensional model of the landform at the bottom of the radiation range can quantitatively analyze the concentration of suspended sediment, the height of sediment, and the current velocity in the channel and the bottom of the radiation range of the channel; Analyze the temporal and spatial distribution characteristics of the dynamic environment of suspended sand in different seasons based on the data of field and sea field waves; S4. Integrate the three-dimensional landform model into the two-dimensional tidal current, wave and sediment and couple the mathematical model, and simulate the impact of different dynamic factors on the suspended sediment. Sand distribution, by combining on-site observation and numerical simulation research methods, analyze and predict the tidal current size, flow velocity and water depth in the channel radiation range within a period of time, and then predict the channel window period.

Description

technical field [0001] The invention relates to the technical field of ship traffic, in particular to a channel window period analysis method based on a voxel structure and a Mike model. Background technique [0002] The sea area of ​​the radiation sand ridge group is affected by both rivers and oceans, and it is easy to form underwater sand bars at the mouth of the river, which is not conducive to the development of shipping. In order to solve this problem, double guide dikes were built at the mouth of the river, and the channel was excavated. On the one hand, this measure turns the original north-south coastal flow into a tidal current parallel to the channel, which solves the problem that ships are difficult to enter the port due to excessive cross flow; on the other hand, the excavated channel meets the water depth conditions for larger-tonnage ships to enter the port. [0003] Although the double guide dike has solved the problem of ships entering the port, there are s...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G01C13/00G01N15/06G01P5/00G06T17/00
CPCG01C13/00G01C13/002G01C13/008G01N15/06G01P5/00G06T17/00G01N2015/0096Y02A90/30
Inventor王乃瑞陈可锋
OwnerNANJING HYDRAULIC RES INST