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Insulation construction method for water outlet of pipe curtain grouting tunnel

A construction method and water outlet technology, which are used in tunnels, tunnel lining, earthwork drilling, etc., can solve the problem that the thermal insulation water outlet does not fully consider the heating and temperature measurement measures of the water outlet, and prevent the damage and breakage of the interlocking structure. , The effect of preventing damage and ensuring safety

Inactive Publication Date: 2019-03-01
北京隧盾市政建设有限公司
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Problems solved by technology

The current common practice in the design of thermal insulation outlets of tunnels in cold regions is to adopt the method of natural outflow, and requires that the location of the design of the outlet should be in the leeward and sunny place, but the thermal insulation outlet does not fully consider the heating and temperature measurement measures of the outlet, and the simultaneous application of Auxiliary insulation materials, etc.

Method used

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  • Insulation construction method for water outlet of pipe curtain grouting tunnel
  • Insulation construction method for water outlet of pipe curtain grouting tunnel
  • Insulation construction method for water outlet of pipe curtain grouting tunnel

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Embodiment

[0032] Embodiment: a kind of thermal insulation construction method of the water outlet of pipe curtain grouting tunnel, such as figure 1 As shown, the stage of the drilling site 20 is first marked with a tunnel shape on the foundation 10 at the beginning of the tunnel. The foundation 10 refers to the original foundation 10 without interception at all, but may also include the foundation 10 in the state of partially removing sand, dust, leaves, soft rocks, etc. that hinder the project.

[0033] Then insert the steel pipe 30 to the stage of the rock formation while drilling in a straight borehole mode (refer to figure 1 and figure 2 ). The above-mentioned straight drilling method is a method of inserting the steel pipe 30 while installing a drill bit in front of the steel pipe 30 to drill the hole, that is, the steel pipe 30 is used as a casing, and the drill installed in front of the steel pipe 30 is rotated, and the drill is pressed in and rotated to cut. steel pipe 30. ...

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Abstract

The invention discloses an insulation construction method for a water outlet of a pipe curtain grouting tunnel, and relates to the field of tunnel construction. The insulation construction method forthe water outlet of the pipe curtain grouting tunnel comprises the following steps of a stage of marking a drilling site, a stage of inserting a steel pipe into a rock formation, a stage of grouting afoundation, a stage of extending the steel pipe to the rear part, a stage of installing a steel support material, installation of a tunnel portal at the rear end of the steel pipe and construction ofa drainage slope surface at the position of the water outlet. According to the steps, a tunnel entrance is formed by means of pipe curtain grouting, meanwhile, a heat insulation measure is applied atthe tunnel entrance, so that the influence of frost heaving on the tunnel is reduced, and the tunnel entrance is prevented from collapse or landslide.

Description

technical field [0001] The invention relates to the field of tunnel construction, in particular to a thermal insulation construction method for a water outlet of a pipe curtain grouting tunnel. Background technique [0002] In the existing technology, the thermal insulation outlet of the tunnel outside the cold area is an important part of the tunnel drainage, and it is also an important measure to ensure the quality of the project. The construction quality of the drainage system outside the tunnel is directly related to the drainage inside the tunnel and the The impact after the operation of the tunnel, and the failure of the accumulated water in the tunnel to be discharged smoothly will directly affect the frost heave of the tunnel, which is directly related to the construction quality and operation safety of the tunnel. The current common practice in the design of thermal insulation outlets of tunnels in cold regions is to adopt the method of natural outflow, and requires...

Claims

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Application Information

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IPC IPC(8): E21D11/10E21D9/14E21D11/00
CPCE21D9/14E21D11/003E21D11/107
Inventor 张连军张伟琪刘新建
Owner 北京隧盾市政建设有限公司
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