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Method for calculating form of sediment accumulation body during bottom throwing of trailing suction hopper dredger

A technology of trailing suction dredger and calculation method, applied in calculation, computer-aided design, special data processing application, etc., to achieve the effect of reducing secondary handling and engineering cost

Active Publication Date: 2019-09-10
CHEC DREDGING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are very few research results on the shape of dredging and mud dumping water accumulations, and the selection of ship mud dumping operation positions mostly depends on experience, which has a certain degree of blindness. Low cost, refined development

Method used

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  • Method for calculating form of sediment accumulation body during bottom throwing of trailing suction hopper dredger
  • Method for calculating form of sediment accumulation body during bottom throwing of trailing suction hopper dredger

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Embodiment

[0029] Embodiment: A calculation method for the form of sediment deposits when a trailing suction dredger is dumped at the bottom. Taking the "Xin Haifeng" dredging ship as a prototype, firstly collect the mud and sand deposits of the trailing suction dredger 1 under the condition of the bottom dumping operation mode. Data, including sand throwing volume V, unit is cm3, sediment particle size d, unit is mm, water depth H of sand throwing point, unit is cm, and the slope, height and range data of the accumulation body, and establish a physical model, mud The value range of the sand particle size d is: 0.3mm ~ 1.3mm, and the value range of the water depth H at the sand throwing point is greater than 5m.

[0030] Then, the sand throwing shape function is established according to the sand throwing amount, the water depth of the sand throwing point and the particle size of the sand:

[0031] f(h, V)=p1+p2*h+p3*h2+p4*C+p5*C2+p6*C3+p7*C4;

[0032] q(d, h)=k1+k2*d+k3*d2+k4*d3+k5*h+k6...

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Abstract

The invention discloses a method for calculating the form of a sediment accumulation body during bottom throwing of a trailing suction hopper dredger. The method comprises the following steps: (1) collecting data of the trailing suction hopper dredger under the bottom throwing operation mode condition; (2) establishing a sand throwing shape function according to the sand throwing amount and the sand throwing point water depth; (3) establishing a particle size coefficient function according to the water depth of the sand throwing point and the sediment particle size; and (4) fitting the sand throwing shape function, the particle size coefficient function and the established physical model to obtain a stacking body shape function. According to the method, a physical model is established through collected historical data of the trailing suction hopper dredger under the condition of a bottom throwing operation mode; summarizing and fitting the morphological relation of the underwater sediment accumulation body under the condition of the bottom throwing operation mode of the dredger, quickly calculating the morphology of the underwater sediment accumulation body according to the sediment throwing amount, the sediment throwing depth and the sediment particle size of the bottom throwing operation of the dredger, and guiding and optimizing the operation mode of the dredger.

Description

technical field [0001] The invention belongs to the technical field of real-time forecasting, and in particular relates to a method for rapidly calculating the shape of a large-scale trailing suction dredger bottom throwing sediment deposits. Background technique [0002] The development of my country's dredging industry has a history of hundreds of years. Driven by the wave of economic globalization and the rapid development of international trade, in order to meet the needs of the large-scale development of container and tanker transportation, various parts of my country have built ports, widened and deepened coastal waterways. In order to improve the navigation capacity, the dredging industry has developed rapidly. At the same time, with the development of ports, waterways, farmland water conservancy and coastal cities, the field of dredging operations has also been extended to a large extent. Farmland water conservancy and reservoir construction and maintenance, national...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/13Y02T90/00
Inventor 张戟郑金龙韩政王丽华许洪文蔺永学王臻宁盛伟栋黄利峰马东岩朱时茂沈伟平罗小峰路川藤张功瑾周滢
Owner CHEC DREDGING
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