Processing method for sealing failure of 19-inch normal-pressure knife cylinder gate

A technology of sealing failure and treatment method, applied in earth-moving drilling, mining equipment, tunnels, etc., can solve the problems of tool wear, slag inclusion in the gate gap, and high cost, and achieve the effect of high safety guarantee and widening adaptation conditions.

Pending Publication Date: 2022-04-15
CCCC TUNNEL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the construction tools in the bedrock section are severely worn, frequent tool changes, frequent gate opening and closing, gate seal failure, and high risk of mechanical damage. As a result, the gate seal is not tight or the seal is damaged, and the knife barrel cannot be replaced under normal pressure
[0004] In addition, in the same environment with poor rock self-stability and high water pressure, replacing the tool under pressure has difficulties such as difficult operation, high risk, high cost, and large impact

Method used

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  • Processing method for sealing failure of 19-inch normal-pressure knife cylinder gate
  • Processing method for sealing failure of 19-inch normal-pressure knife cylinder gate
  • Processing method for sealing failure of 19-inch normal-pressure knife cylinder gate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 As shown, the cutter gate structure of the present embodiment includes a wall body of the palm mask with a sealing plate M11, a barrel in which a bunter is inserted, a gate, wherein the gate is divided into the tubular cavity of the cylinder into the prodrug. And the rear cavity.

[0038] In this example, during the normal pressure tool change process, after the gate is closed, the slider is pressed, and when the gate is sealed, it is found that the pressure relief requirement cannot be reached, and the shutter seal has leakage (can also be referred to as a sealed failure), Causes that cannot be relieved, the tool cartridge does not pull out, at this time, it must be handled in time to ensure smooth change.

[0039] Specifically, the 19-inch retaining tool is closed, including the following steps: S1, gate leakage; S2, gate failure blockage; S3, tool mounting; S4, replace the gate.

[0040] Process combination figure 2 and image 3 The shown is implemented a...

Embodiment 2

[0047] During the tool change process, the tool is unplugged, and it is found that the gate seal is not allowed to leak. At this time, the person cannot stay in the warehouse, and the personnel need to evacuate, close the center warehouse door, the center bin pressure, ensure pressure balance, The palm is stabilized, and the person is pressed to connect the polyurethane pipe.

[0048] At the same time, the experimental step in this example is basically the same as that of Example 1.

[0049] It is to be further illustrated that the personnel are pressed into the central bin, remove the knife bone plate, connect the polyurethane injection tube, inject the polyurethane, and the injection process, keep the gate to leave a certain slit, continue to leave water, while meeting the normal pressure conditions Next, replace the gate, and to verify this method of adaptability, it also uses 4BAR, 6BAR, 8BAR, and 10BAR pressures, respectively, in the case of blocking experiments.

[0050] In ...

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PUM

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Abstract

The invention discloses a 19-inch normal pressure knife cylinder gate sealing failure treatment method, a knife cylinder gate structure adopted by the method comprises a bin body with a tunnel face provided with a sealing plate, a cylinder body communicated with the bin body and a gate arranged on the cylinder body, the gate divides a cylinder cavity of the cylinder body into a front cavity and a rear cavity, and the treatment method comprises the following treatment steps that S1, gate leakage is conducted; s2, gate failure plugging; s3, mounting a cutter cylinder; and S4, the gate is replaced. On one hand, the problem of replacement of the cutter cylinder and the gate after gate sealing failure can be solved in a normal-pressure environment; and on the other hand, higher safety guarantee is provided for the normal-pressure cutter head to replace cutters under high-water-pressure, long-distance and high-frequency normal-pressure conditions, the adaptation conditions of the normal-pressure cutter head are widened, and the use of the normal-pressure cutter head is popularized.

Description

Technical field [0001] The present invention belongs to the field of shield tunnel construction technology, and in particular, the present invention relates to a method of failure of a 19-inch rotor blade gate. Background technique [0002] Shield tunnel construction method refers to the use of shield machines, while controlling the excavation surface and the surrounding soil do not collapse and unstable, the tunnel is tunneling, the slag, and the assembled tube is formed in the machine, and the wall is launched. The method of building a tunnel without disturbing the surrounding soil. The so-called "shield" of the shield is refers to a cutter plate and a pressure cabin that holds the stability of the opening surface. The shield of the surrounding soil is supported, and the so-called "construct" means a tubular sheet and wall post that constitutes a tunnel lining. Slurry. [0003] At present, the advantages and disadvantages of the design and use of the normal pressure cutter are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06
Inventor 王义盛徐文礼姚占虎葸振东赵小鹏曾德成周昆陈淮志刘畅
Owner CCCC TUNNEL ENG
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