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Underwater construction method for rock anchor rod draught fan foundation

A technology for fan foundation and rock bolt, which is applied in basic structure engineering, construction, etc., can solve the problems of low safety factor, inconvenient disassembly and assembly, low work efficiency, etc., and achieves high work efficiency, convenient disassembly and transportation, and cost saving. Effect

Active Publication Date: 2017-05-24
中国电建集团贵州工程有限公司
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Problems solved by technology

[0007] However, the above three types of offshore wind farm fan foundation construction need to be constructed underwater, and they all have the following disadvantages: 1. The process is complicated and the work efficiency is low; 2. The safety factor is low; 3. It is inconvenient to disassemble and assemble, and the cost is high.

Method used

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  • Underwater construction method for rock anchor rod draught fan foundation

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Embodiment Construction

[0039] Specific embodiments of the present invention will be described in detail below.

[0040] Such as figure 1 As shown, the underwater construction method of rock bolt fan foundation, the fan foundation is built on the saturated sand foundation, including the following steps:

[0041] (1) Construction preparation

[0042] (11) According to the geological survey report of the location of the fan foundation, grasp the undulating elevation of the underground rock surface and the elevation of the perennial underground water level, and combine the design drawing and description of the rock anchor foundation structure to determine the range of the cement mixing pile consolidation saturated sand layer foundation;

[0043] (12) Select the qualified mixing pile construction machine model according to the designed mixing pile diameter, select the number of mixing pile machines according to the engineering quantity and construction period, and match the corresponding number and type...

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Abstract

The invention relates to an underwater construction method for a rock anchor rod draught fan foundation. According to the underwater construction method for the rock anchor rod draught fan foundation, the draught fan foundation is constructed on a water saturated sand layer foundation, and the method comprises the first step of construction preparation, the second step of cement mixing pile construction, the third step of foundation cushion layer construction, the fourth step of rock anchor rod construction and the fifth step of field cleaning and removing.

Description

technical field [0001] The invention relates to an underwater construction method of a rock bolt fan foundation. Background technique [0002] my country has a vast territory, long coastline, and abundant offshore wind energy resources. Offshore wind farms have the advantages of high wind speed, long effective power generation time, do not occupy land, and are close to the load center, etc., and have good prospects for development. At present, the world's Shanghai wind power construction is in the ascendant, domestic offshore wind power has also officially started, and it is urgent to catch up with the international advanced level. [0003] Summarizing the foundations of wind turbines for major offshore wind farms that have been built in the world, there are three main structures: [0004] 1. Single pile foundation: A large-diameter steel pipe pile is directly driven into the seabed as the foundation of the wind turbine (wind turbine). Most of the offshore wind farms that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/42
CPCE02D27/425E02D2250/0061
Inventor 黄文平肖国前
Owner 中国电建集团贵州工程有限公司
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