Shallow water floating platform mooring device and method

Abstract

The invention relates to a mooring device of a shoal water floating type platform. The mooring device comprises mooring cables, water drums and anchoring chains, wherein draw-works are separately arranged at two lateral ends of a bow of the floating type platform and two lateral ends of a stern of the floating type platform; the water drums are separately arranged on the longitudinal outer side of the bow of the floating type platform and the longitudinal outer side of the stern of the floating type platform; each of the extending ends of the mooring cables which are wound on the draw-works at the two lateral ends of the bow of the floating type platform is connected with the corresponding water drum on the outer side of the bow of the floating type platform, and each of the extending ends of the mooring cables which are wound on the draw-works arranged at the two lateral ends of the stern of the floating type platform is connected with the corresponding water drum on the outer side of the stern of the floating type platform; and the two water drums are separately fixed on a seafloor anchor base through the anchoring chains. The invention further discloses a dual-water-drum mooring manner when the floating type platform is under a normal operation state, a single-water-drum mooring manner when the floating type platform is under a survival working state, and a mooring method for shifting the two mooring manners according to the sea condition. According to the mooring device disclosed by the invention, the positioning requirements for the shoal water floating type platform under the situation of mooring alongside can be met, the security requirements for the shoal water floating type platform under an anti-typhoon mooring mode can be met, a ship is convenient to moor laterally and alongside, and the mooring device has high stormy wave resistant capacity.

Description

technical field [0001] The invention relates to the technical field of marine engineering mooring, in particular to a mooring device and method for floating platforms in shallow sea areas. Background technique [0002] With the continuous development and construction of oceanic islands and reefs in my country, it is necessary to use floating platforms that do not damage the marine ecological environment as docks for berthing of cargo ships and loading and unloading of materials. As the global climate has warmed in recent years, typhoons have occurred frequently, and their levels have gradually increased. To a large extent, the positioning ability of the mooring system of the floating offshore platform is tested. How to ensure the normal production of the floating platform or improve the storm self-storage capacity is a major problem during its service. The current mooring methods mainly include turret single-point mooring, catenary multi-point mooring, and tension multi-poi...

AI Technical Summary

Problems solved by technology

Although this mooring method has a strong ability to resist wind and waves, when the direction of the wind and waves changes, the buoyant body will rotate accordingly, which is not conducive to other ships and buoyant bodies berthing and operating horizontally, and the structure is complex and the cost is high; catenary and tension The multi-point mooring method usually arranges multiple mooring points at the corners of the floating platform or along the perimeter, and the mooring lines on each mooring point extend radially to the surroundings, and then the mooring lines anchored to the seabed

Although these two multi-point mooring methods have strong positioning capabilities and the floating body is not easy to rotate, they have the following defects: First, when the cargo ship is berthing on one side of the floating platform in the horizontal direction, it is easy to collide with the mooring cables of the floating body and cause The damage to the mooring system or the ship is very unfavorable to the lateral berthing and operation of the ship and the navigation and operation of the surrounding ships; second, each mooring cable is directly fixed on the seabed by anchor piles or other forms of anchoring devices, and the required There are many anchor points, and the construction and installation of the entire mooring system requires more cost and time; third, in sea areas with high sea conditions and changeable wind and wave directions, it is easy to be affected by transverse wind and waves, which makes the floating platform and mooring system more durable than a single mooring system. The point mooring method has much greater wind and wave force and the resulting movement of the floating platform, the mooring system and the floating platform itself are easily damaged, and the safety is poor

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