Direct elevation control dredging method for dredge ship

Abstract

The invention discloses a direct elevation control dredging method for a dredge ship, which comprises the following steps: arranging an RTK (Real Time Kinematic) mobile station and a process state sensor on the dredge ship; acquiring the positioning data of a dredger according to the RTK mobile station and the process state sensor; calculating the elevation criterion of the dredger according to the positioning data of the dredger; and positioning the dredging position of the dredger according to the elevation criterion. As the positioning technology based on real-time dynamic carrier phase difference and the on-site real-time tidal observation technology are combined, the method has the advantages that all-weather elevation positioning navigated far sea operation is realized, and the elevation positioning accuracy can reach the centimeter level. Therefore, the dredging efficiency and the engineering quality are greatly improved, and the construction requirements higher than the conventional elevation precision index specification are met.

Description

technical field [0001] The invention belongs to the technical field of dredging engineering, in particular to a dredging method with direct elevation control of a dredger. Background technique [0002] In conventional dredging projects, dredging ships generally use the method of bathymetry reference control to carry out dredging operations. Plane navigation and positioning adopt GPS global positioning system and ship's built-in dredger construction electronic graphics system, and the computer screen displays and monitors the plane excavation position in real time; depth control adopts on-site real-time tide inspection as the elevation reference and ship depth control system, According to the manually input target excavation depth data and the tide level at that time, the dredger is controlled to be lowered to the excavation depth. [0003] The current method used in conventional dredging projects requires the conversion of the bathymetry datum level and the engineering desi...

AI Technical Summary

Problems solved by technology

[0003] The current method used in conventional dredging projects requires the conversion of the bathymetry datum level and the engineering design elevation, due to factors such as tidal level zoning, wind and wave currents, and changes in the weight of dredging equipment (such as rake heads, cutter heads, and grabs, etc.) Therefore, the control deviation is relatively large, and it is difficult to ensure stable engineering quality

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