Tunnel lining trolley, working method and installation method of pre-grouting pipe fixing device

A technology for lining trolleys and pre-grouting pipes, applied in tunnel lining, tunnel, shaft lining, etc., can solve problems such as easy loosening, and achieve the effect of strengthening the fixed connection relationship, maintaining stability, and reliable fixing methods

Inactive Publication Date: 2018-07-17
NO 7 ENG CO LTD OF CHINA RAILWAY 19 BUREAU GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] It can be seen from the above scheme that the problem of easy looseness between the trolley panel and the pre-grouting pipe is solved through the setting of the connecting unit, and the fixing method is more reliable

Method used

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  • Tunnel lining trolley, working method and installation method of pre-grouting pipe fixing device
  • Tunnel lining trolley, working method and installation method of pre-grouting pipe fixing device
  • Tunnel lining trolley, working method and installation method of pre-grouting pipe fixing device

Examples

Experimental program
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Embodiment Construction

[0028] Such as figure 1 with figure 2 As shown, the lining trolley of this embodiment has a trolley template 10 and a fixing device. The lining trolley is in the tunnel, and the tunnel has primary support 30 .

[0029] The trolley template 10 has a first through hole 11 , the cross section of which is circular, and the function of the first through hole is for the pre-grouting pipe 21 to collide with the primary support 30 of the tunnel after passing through.

[0030] The fixing device includes a pre-grouting pipe 21 , a connecting unit, a grouting pipe, a connecting pipe piece 24 and a second sealing ring 25 .

[0031] The connection unit has a first sealing ring 26 and a connection disc 27 .

[0032] The connecting plate 27 is a cylindrical connecting plate, and the connecting plate 27 can be fixed on the trolley formwork 10 by fasteners 28. There are four second threaded holes 12 on the trolley formwork 10, and the fasteners 28 can be specifically fastened with bolts. ...

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PUM

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Abstract

The invention relates to a tunnel lining trolley, an operating method thereof and a mounting method of a pre-grouting pipe fixing device. The tunnel lining trolley comprises a trolley formwork, a pre-grouting pipe, a connecting unit and a grouting pipe. Through the arrangement of the connecting unit, the problem that a trolley panel and the pre-grouting pipe are prone to looseness is solved, and the fixing way is more reliable. Meanwhile, fixed connection between the pre-grouting pipe and the grouting pipe is further reinforced through the arrangement of a connecting pipe fitting. When the injection pressure of the grouting pipe is high, the stability of the whole tunnel lining trolley can still be kept.

Description

technical field [0001] The invention relates to the field of tunnel lining concrete construction, in particular to a method for installing a tunnel lining trolley and a pre-grouting pipe fixing device of the tunnel lining trolley used for pre-grouting a vault in the tunnel lining pouring process. Background technique [0002] During tunnel construction, gaps sometimes exist between the lining vault and the initial support, and even voids are formed in severe cases. After analysis, one of the main reasons is that part of the gas cannot be removed during the capping process of the lining concrete, thus forming air pockets, which are the gaps or cavities that are often found in subsequent inspections. [0003] To solve this problem, a radial pre-grouting pipe can be added at the vault of the lining trolley. In some processes, the pre-grouting pipe can also be used as a vent hole during the topping of the concrete pouring process. Generally, the end of the grouting pipe is set...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/10F16L5/02F16L47/16
CPCE21D11/10E21D11/105F16L5/02F16L47/16
Inventor 刘国强
Owner NO 7 ENG CO LTD OF CHINA RAILWAY 19 BUREAU GRP
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