Telescopic pile casing for offshore wind power single pile rock-socketed construction and operation method

Abstract

The invention provides a telescopic pile casing for offshore wind power single pile rock-socketed construction and an operation method. The telescopic pile casing comprises an outer pile casing, an outer pile casing guide rail, an inner pile casing, an inner pile casing guide rail, an inner pile casing follow-up device, an inner pile casing lifting lug, a jack and an inner pile casing limiting ring. The inner pile casing moves in the outer pile casing through the guide rail. A propelling device installed on a drill rod presses the inner pile casing downwards through the limiting ring welded tothe inner pile casing, so that the inner pile casing follows along with a drill bit, and hole collapse can be effectively prevented and controlled. The inner pile casing is connected with the jack ofa platform through a steel wire rope and is used for mounting, lifting and dismounting the inner pile casing. The construction method is used for aspects of offshore wind power single pile rock embedding, side wall grouting, single pile implanting and the like, and has the advantages of preventing hole collapse, accelerating the construction progress, being convenient to dismantle, being reusable, reducing cost, improving benefits and the like.

Description

technical field [0001] The invention relates to the field of wind power, in particular to a retractable casing used for single pile rock-socketed construction of offshore wind power and an operation method thereof. Background technique [0002] In recent years, with the development and application of new technologies, new processes and new materials for offshore wind power, offshore wind power, which has the characteristics of abundant resources, high utilization hours of power generation, does not occupy land, does not consume water resources, and is suitable for large-scale development, is in the infancy. rapid development stage. The rock-socketed construction of offshore wind power single piles has to face problems such as large sea waves, short effective operation time, and easy hole collapse during drilling. [0003] After analysis, it is found that the traditional casing is a single-layer structure, which cannot follow up with the drill bit, and it is easy to collapse...

AI Technical Summary

Problems solved by technology

The rock-socketed construction of offshore wind power single piles has to face problems such as large sea waves, short effective operation time, and easy hole collapse during drilling.

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