Method for reinforcing fault fracture zone through single-shield double-mode TBM advanced grouting

A technology of advanced grouting and grouting reinforcement, which is applied in earthwork drilling, wellbore lining, tunnel lining, etc. It can solve problems such as uneven grouting effect, small reinforcement range, and long operation time, and reduce the cost of cyclic installation and commissioning Time, high construction efficiency, and the effect of saving construction time

Inactive Publication Date: 2019-09-20
CHINA RAILWAY NO 2 ENG GRP CO LTD
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantages of the existing grouting reinforcement method in the prior art, such as cumbersome work, small reinforcement range, uneven grouting effect, and long working time when the mechanical tunneling method with limited working space is used for construction. , providing a single-shield dual-mode TBM advanced grouting method for strengthening the fault fracture zone

Method used

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  • Method for reinforcing fault fracture zone through single-shield double-mode TBM advanced grouting
  • Method for reinforcing fault fracture zone through single-shield double-mode TBM advanced grouting
  • Method for reinforcing fault fracture zone through single-shield double-mode TBM advanced grouting

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Embodiment

[0034] like Figure 1-5 As shown, a method for advance grouting of a single-shield dual-mode TBM of the present invention to strengthen the fault fracture zone includes the following steps:

[0035] A. Remove the TBM segment assembly platform, and use electric locomotives to transport the geological drilling rig and related equipment to the tunnel;

[0036] B. Install the drilling rig on the rotating disk of the TBM assembly machine, fix it firmly, and use the rotation angle of the assembly machine to realize the 360° rotation of the drilling rig, that is, to determine the angle of the drilling rig;

[0037] C. After the drilling rig is installed, the drilling rig is connected to the console through the power oil pipeline, and the console is connected to the pump station through the power oil pipeline to check the working performance of the equipment, and determine the number of drill pipes required for drilling and other tools required for construction. and materials, such a...

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Abstract

The invention discloses a method for reinforcing a fault fracture zone through single-shield double-mode TBM advanced grouting. The method comprises the steps: advanced drilling equipment is mounted on a rotating disc of a TBM assembly machine; advanced drilling is conducted through one or more hole positions in eight horizontal holes and fourteen oblique holes of a TBM; advanced grouting is conducted according to the drilling situation; and grouting reinforcing and hole sealing are conducted. The tunnel face fracture zone can be quickly subjected to grouting reinforcing, during operation, the former holes can be subjected to grouting reinforcing when the hole positions are drilled, thus the construction time is shortened greatly, manpower is saved, and the construction efficiency is high; and during construction through a mechanical method, matched grouting reinforcing equipment is used, the equipment cycle mounting and debugging time can be reduced greatly, the construction efficiency is improved, under an equipment reserved hole, a soil body of the fault fracture zone can be reinforced at the maximum range, and thus the method is worthy of being popularized in the EPB and TBM tunneling fault fracture zone.

Description

technical field [0001] The invention relates to the field of tunnel construction, in particular to a method for advance grouting of a single-shield and dual-mode TBM to reinforce a fault fracture zone. Background technique [0002] In the construction of single-shield dual-mode TBM tunnels with fault fracture zones, advanced grouting reinforcement for fault fracture zones is a common method to ensure construction safety, especially in subsea tunnels with abundant groundwater, well-developed joints, and broken surrounding rocks. Advanced grouting reinforcement is a method to realize rapid and safe excavation and escort construction. [0003] At present, the conventional advance grouting reinforcement methods are advance grouting reinforcement of small conduits, full-section curtain grouting reinforcement, advance grouting reinforcement of large pipe sheds, and surface grouting reinforcement. The above construction methods are mainly applicable to traditional mine construction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06E21D11/10
CPCE21D9/001E21D11/10E21D9/0671
Inventor 李小锋陈卓陈强何齐海吴志昊李果
Owner CHINA RAILWAY NO 2 ENG GRP CO LTD
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