Fence type grouting construction method for subsea tunnel to pass through water-rich fault fracture zone

A subsea tunnel and construction method technology, which is applied in the direction of tunnels, earthwork drilling, mining equipment, etc., can solve the problems of slow progress of preliminary projects, high cost, high requirements for geological data and test equipment

Active Publication Date: 2021-07-06
OCEAN UNIV OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] 3. Freezing method, which uses refrigerant to transfer cold energy to cool the water-bearing strata to freeze, and relies on the strength of the frozen rock and soil to withstand the pressure of the surrounding rock, so that excavation and support can be carried out safely under the protection of frozen rock and soil. This method is expensive and has a long operation period, and is usually used in formations where other methods cannot be used
However, this method has high requirements on geological data and test equipment, which will easily lead to slow progress in the preliminary engineering

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  • Fence type grouting construction method for subsea tunnel to pass through water-rich fault fracture zone
  • Fence type grouting construction method for subsea tunnel to pass through water-rich fault fracture zone
  • Fence type grouting construction method for subsea tunnel to pass through water-rich fault fracture zone

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Embodiment Construction

[0050] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0051] The structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Therefore, Without technical substantive significance, any modification of structure, change of proportional relationship or adjustment of size shall still fall within the technology disclosed in the present invention without affecting the effect and purpose of the present invention. within the scope of the content. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of this specification....

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Abstract

The invention discloses a fence type grouting construction method for a subsea tunnel to pass through a water-rich fault fracture zone. The fence type grouting construction method comprises the following steps that advanced geology forecast is carried out; pre-grouting is carried out to obtain grouting related parameters; fracture zone water-blocking walls are constructed on the two sides of the tunnel; advanced grouting reinforcement is carried out to form a water-blocking cover plate; a grouting effect is inspected; full-section grouting reinforcement of a tunnel face is carried out; and tunneling is carried out by a drilling and blasting step method. According to the fence type grouting construction method for the subsea tunnel to pass through the water-rich fault fracture zone, grouting is innovatively carried out from the seabed surface from top to bottom, the water blocking cover plate is combined, a fence type water blocking structure is formed, the safety coefficient in the subsea tunneling process is improved, and the application range is wide.

Description

technical field [0001] The invention relates to the technical field of submarine tunnel engineering, in particular to an enclosure-type grouting construction method for a submarine tunnel passing through a water-rich fault fracture zone. Background technique [0002] Compared with traditional tunnels, the prevention and control of water inrush in subsea tunnels is more challenging. Water inrush accidents in the construction of subsea tunnels mostly occur in unfavorable geological and rock contact surfaces such as fault fracture zones or joint fissure development sections. Usually, the surrounding rocks in the subsea fault fracture zone and its affected zone are broken, joints and fissures are developed, and the self-stabilization ability of the surrounding rocks is poor, and the joints and fissures are mostly connected with the seabed. Accidents such as water inrush and collapse are very likely to occur during construction in this type of stratum. Excavating tunnels in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00
CPCE21D9/001
Inventor 魏强陈旭光陈力铭万勇
Owner OCEAN UNIV OF CHINA
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