PVC pipe hole bottom grouting device and its installation and grouting method

A technology of PVC pipe and grouting device, which is applied in shaft equipment, earthwork drilling, wellbore lining, etc. It can solve the problems of low grouting pressure, poor water shutoff effect, and small slurry diffusion range, and achieve good reinforcement and water shutoff , Improve the uniformity and reduce the amount of drilling

Inactive Publication Date: 2020-09-04
CHINA RAILWAY TUNNEL GROUP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a PVC pipe hole bottom grouting device and its installation and grouting method to solve the problems of low grouting pressure, small grout diffusion range and poor water blocking effect in the existing grouting method

Method used

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  • PVC pipe hole bottom grouting device and its installation and grouting method
  • PVC pipe hole bottom grouting device and its installation and grouting method

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Embodiment

[0041] The PVC pipe hole bottom grouting device mainly includes an orifice pipe 8, an orifice connector 3 and a PVC pipe 10, a slag discharge and exhaust device 4, a slurry inlet pipe 1, and a grouting pump 2. Among them, one end of the orifice tube 8 is located in the orifice of the grouting hole 9 and fixed on the orifice wall, and the other end of the orifice tube 8 is located outside the grouting hole 9 and is connected to the slag discharge exhaust device 4 through the flange 5, wherein the slag discharge The exhaust device 4 is a commercially available product that is relatively common in existing applications. The other end of the slag discharge and exhaust device 4 is connected to the orifice connector 3 and connects the PVC pipe 10 with the slurry inlet pipe 1 through the orifice connector; the front end of the orifice connector 3 is glued with PVC glue at the rear end of the PVC pipe 10, and its front end The external thread is connected with the slag discharge and ex...

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Abstract

The invention discloses a PVC pipe hole bottom grouting device and its installation and grouting method. The PVC pipe hole bottom grouting device comprises the following parts of a PVC pipe with an inlet and an outlet at both ends, wherein multiple sets of slurry overflow outlets are arranged on the pipe wall, the inlet is used to introduce the slurry, and the multiple sets of slurry overflow outlets and the outlet are used to export the slurry; a slag discharge and exhaust device, which is a hollow sleeve with one end open and one end closed, wherein its side wall is provided with a valve used for downward discharge of gas and residue in the slurry, the slag discharge and exhaust device is sleeved on the end of the PVC pipe close to its inlet, and the closed end is provided with a throughhole for the PVC pipe to pass through; and an orifice pipe which is a hollow sleeve opened at both ends and communicating with the slag discharge and exhaust device and is sleeved on the PVC pipe, wherein one end of the orifice pipe is detachably connected with the open end of the slag discharge and exhaust device. The invention solves the problems of low grouting pressure, small slurry diffusionrange and poor water blocking effect of the existing grouting method.

Description

Technical field [0001] The invention belongs to the technical field of tunnels, and specifically relates to a PVC pipe hole bottom grouting device and its installation and grouting method. Background technique [0002] In order to prevent the collapse and large deformation of the tunnel construction in the weak and broken ground, and ensure the safety of the construction, the commonly used advanced reinforcement techniques for the weak surrounding rock of the tunnel mainly include the advanced small pipe grouting and the large pipe shed grouting. The grouting method is: Under the action of grouting pressure, the slurry flows into the pipe from the orifice and enters the formation through the holes on the pipe wall. The main purpose is to improve the strength and rigidity of the small pipe and the big pipe shed. This method has relatively little improvement on the formation itself. . In addition, the advanced small pipe grouting has the disadvantages of low grouting pressure, sma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10E21D11/38
CPCE21D11/10E21D11/38
Inventor 徐海廷王卓倪汉杰翟康博曹宝会徐伟尹龙谷晴天王学壮
Owner CHINA RAILWAY TUNNEL GROUP CO LTD
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