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Vibroflotation grouting equipment for reinforcing seabed soil foundation and treatment method

A soil mass and injection technology, which is applied in soil protection, infrastructure engineering, and open water surface cleaning, etc. The effect of increasing overall strength

Pending Publication Date: 2019-03-08
OCEAN UNIV OF CHINA
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Problems solved by technology

This patent vibrates the bottom of the pipe pile, and then fills and grouts the bottom of the pipe pile to form an enlarged head and increase the bearing capacity of the single pile. It cannot solidify the loose underwater soil layer to form a pile, let alone reinforce the surrounding of the pile foundation. Soil

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  • Vibroflotation grouting equipment for reinforcing seabed soil foundation and treatment method
  • Vibroflotation grouting equipment for reinforcing seabed soil foundation and treatment method
  • Vibroflotation grouting equipment for reinforcing seabed soil foundation and treatment method

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Embodiment Construction

[0033] In order to further elaborate the technical means and effects that the present invention adopts for reaching the intended invention purpose, below in conjunction with the accompanying drawings and preferred embodiments, the specific implementation, structure, features and effects of the present invention are described in detail as follows:

[0034] The present invention takes into account the characteristics of high porosity, softness and easy collapse of the soil under the environment of high water pressure on the seabed. The current vibrating technology only replaces the loose soil with filling material, and then vibrates the filling material to form a pile. It cannot play the role of reinforcing loose soil. This application creatively combines the vibrating compaction method with the grouting process to form a vibrating grouting method, using vibrating grouting equipment and cement slurry to create a closed environment in the hole, and then using the vibrating head to...

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Abstract

The invention discloses vibroflotation grouting equipment for reinforcing a seabed soil foundation and a treatment method, and relates to the technical field of seabed soil foundation reinforcing. Inconsideration of the soil characteristics of being high in porosity, soft and prone to collapsing in a high-water-pressure seabed environment, an existing vibroflotation technology only comprises thesteps that loose soil is replaced with filling materials, and then vibroflotation pile forming is conducted on the filling materials, and the effect of reinforcing the loose soil can not be achieved.According to the vibroflotation grouting equipment for reinforcing the seabed soil foundation and the treatment method, a vibroflotation compaction method and a grouting technology are creatively combined to form a vibroflotation grouting technology, the closed environment in holes is made through the vibroflotation grouting equipment and cement paste, a vibroflotation head is pulled up to enablethe negative pressure in the holes to be generated, the loose soil on the seabed collapses, the cement paste and the collapsing soil are fully mixed to form a composite foundation under the action ofvibroflotation, therefore, the loose soil around the pile foundation is reinforced, and the overall strength of the seabed foundation is greatly improved.

Description

technical field [0001] The invention relates to the technical field of subsea soil foundation reinforcement, in particular to vibro grouting equipment and a treatment method for reinforcing the subsea soil foundation. Background technique [0002] With the scarcity of land resources in the 21st century, my country has begun to step up the development and utilization of marine resources. Under the erosion of waves, the soil around the offshore pile foundation is easily eroded to cause structural damage, and the erosion of waves will also cause the loss of the island foundation. Therefore, it is necessary to strengthen the submarine soil foundation. [0003] For the subsea soil foundation densification operation, if the traditional riprap reinforcement and maintenance method is adopted, the stones that are stable only by their own weight are easily washed away by the turbulent water flow; if the cofferdam is used and the water is drained, concrete is injected around the founda...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/12E02B15/06E02D3/054
CPCE02B3/12E02B15/06E02D3/054E02D2250/0061
Inventor 陈旭光万勇牛小东邱振华徐齐宇
Owner OCEAN UNIV OF CHINA
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