Grouting stopping method for grouting tail end of steel pipe

A steel pipe and grout stop technology, which is applied in earthwork drilling, wellbore lining, tunnel lining, etc., can solve the problems of unstable grouting quality, potential safety hazards, and poor grout sealing effect, so as to avoid potential safety hazards in electricity use and improve Good grouting construction quality and grout sealing effect

Pending Publication Date: 2021-07-02
常凤琴 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to provide a method for stopping grouting at the end of steel pipe grouting to solve the problems of unstable grouting quality, poor sealing effect, potential safety hazards and slow construction progress in the existing grouting process

Method used

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  • Grouting stopping method for grouting tail end of steel pipe
  • Grouting stopping method for grouting tail end of steel pipe
  • Grouting stopping method for grouting tail end of steel pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] see Figure 2-Figure 3 , this embodiment proposes a steel pipe grouting hole wall sealing device, including a clamp 100, a positioning steel sleeve 200 and a first sealing rubber sleeve 300, the positioning steel sleeve 200 and the first sealing rubber sleeve 300 The cross section is circular.

[0080] The positioning steel sleeve 200 includes a steel sleeve body 240 and a first positioning ring 210, the first positioning ring 210 is fixedly arranged at one end of the steel sleeve body 240, and the inner diameter of the first positioning ring 210 is exactly It is equal to the outer diameter of the steel sleeve body 240 , and the first positioning ring 210 is just fixed on the end surface of the steel sleeve body 240 .

[0081] The clamp 100 is movably connected to the first positioning ring 210 , and the clamp 100 can rotate relative to the positioning steel sleeve 200 . The clip 100 includes two half-rings 110 and a bolt 120 for forming the two half-rings 110 into a ...

Embodiment 2

[0090] see Figure 4 , this embodiment proposes a grout stop connection device at the tail end of a grouted steel pipe, including a main sleeve 600, the main sleeve 600 includes a second positioning ring 620, a grout outlet pipe 650 and a grout inlet pipe 640, the grout outlet The pipe 650 and the slurry inlet pipe 640 are respectively connected to both sides of the second positioning ring 620, and the slurry outlet pipe 650 and the slurry inlet pipe 640 are connected; The diameter of the slurry pipe 640 is consistent with the inner diameter of the second positioning ring 620 .

[0091] A hexagonal ring 630 is provided at the joint between the slurry feeding pipe 640 and the second positioning ring 620 . In this embodiment, the hexagonal ring 630 is a thickened hexagonal nut.

[0092] The grout inlet pipe 640 is provided with an external thread for connecting with the grout stop valve and grouting equipment.

[0093] The grouting pipe 650 extends into the tail of the grouti...

Embodiment 3

[0102] According to the type of grouting steel pipe that needs to be used under actual working conditions, the steel pipe grouting hole wall sealing device described in Embodiment 1 that is compatible with it can be made in advance, and the embodiment that is suitable for it can be made in advance. The grout stop connection device at the tail end of the grouted steel pipe described in 2.

[0103] see Figure 1-Figure 4 This embodiment provides a method for stopping grouting at the end of steel pipe grouting, which requires the use of the grouting device for grouting hole wall of the steel pipe described in Embodiment 1 and the connecting device for stopping the grouting at the end of the grouting steel pipe described in Embodiment 2.

[0104] The method specifically includes the following steps:

[0105] Step 1: Clean up the borehole, insert the steel pipe grouting hole wall grout sealing device into the borehole, specifically, extend the positioning steel sleeve 200 with the...

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Abstract

The invention relates to the technical field of tunnels and underground engineering, aims to solve the problems of unstable grouting quality, poor grouting sealing effect and slow construction progress of an existing grouting process, and provides a grouting stopping method for a grouting tail end of a steel pipe. The grouting stopping method comprises the following steps of: step 1, cleaning a drill hole, and inserting a steel pipe grouting hole wall grouting sealing device into the drill hole; step 2, inserting the head end of a grouting steel pipe into the steel pipe grouting hole wall grouting sealing device, inserting the grouting steel pipe into the drill hole along the steel pipe grouting hole wall grouting sealing device, and sealing the steel pipe grouting hole wall grouting sealing device with the grouting steel pipe and the hole wall of the drill hole; step 3, inserting the head end of a grouting stopping connecting device at the tail end of the grouting steel pipe into the tail part of the grouting steel pipe, and sealing the joint of the grouting steel pipe and the grouting stopping connecting device at the tail end of the grouting steel pipe; and step 4, connecting grouting equipment to the tail end of the grouting stopping connecting device at the tail end of the grouting steel pipe, and performing grouting operation. The grouting stopping method has the beneficial effects that the operation safety is guaranteed, the construction progress is accelerated, the grouting construction quality is improved, and the construction cost is reduced.

Description

technical field [0001] The invention relates to the technical field of tunnels and underground engineering, in particular to a method for stopping grouting at the end of steel pipe grouting. Background technique [0002] Steel pipe grouting reinforcement is an important means to ensure the safety of tunnel and underground engineering construction, and an important process to ensure the safety of workers and the function of the main structure. [0003] In the prior art, there are already complete sets of equipment for the processing of semi-finished products of grouted steel pipes, which can realize mechanized and rapid production. Therefore, the key to grouting construction of steel pipes lies in the hole forming, installation and grouting processes. [0004] Regarding the grouting process, since the end of the grouted steel pipe is mainly connected by welding, welding has high requirements on the welding skills of the welder, and there are many problems on site, such as hig...

Claims

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Application Information

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IPC IPC(8): E21D11/10E21D9/00
CPCE21D11/10E21D9/001Y02E10/20
Inventor 代文绍常凤琴冯秀祥舒兴权田华川崔芜滔杨瑞文
Owner 常凤琴
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