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A damper with self-repair function and its construction method

A self-repairing damper technology, which is applied in mine/tunnel ventilation, earthwork drilling, mining equipment, etc., can solve problems such as damper door frame deformation, breaking, and wall brick sand elasticity is small, so as to prolong the service life and improve the resistance Compression ability, better healing effect

Active Publication Date: 2019-07-19
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous expansion of the scope of mine mining, the periodic ground pressure of the roadway is obvious, and the wall of the damper is often affected by the mining, and the wall is damaged, and the door frame of the damper is deformed and broken, which leads to serious internal air leakage, which is harmful to the mine ventilation system. It has a great impact on the safety, stability and reliability of the mine, and poses a great threat to the safe production of mines.
[0003] The damper wall commonly used in traditional coal mines is usually composed of bricks, sand, and cement. In the roadway with high mine pressure, due to the very small elasticity of the wall brick and sand, the wall is prone to peeling, slag, cracking, crushing, and deformation. And other phenomena, affecting the normal use of the damper
Once the wall is cracked, multiple pouring and treatment of the cracks in the wall are required, which is time-consuming and material-intensive

Method used

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  • A damper with self-repair function and its construction method
  • A damper with self-repair function and its construction method
  • A damper with self-repair function and its construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] pass figure 1 and figure 2 It can be seen that a mine damper with self-repairing function includes a damper 9, a door frame and a structure for installing the door frame, the structure includes a foundation, a wall 14 and a vault 1, and the wall of the structure The inside of 14 is filled with a closed filling material, and a repair pipe 5 equipped with an adhesive is distributed inside the closed filling material, and the repair pipe 5 is a brittle pipe.

[0038] As a preference, the door frame is composed of an outer door frame 6 and an inner door frame 7, the distance between the two layers of door frames is 80mm, and a buffer material 8 is filled in the middle of the inner and outer door frames, and the buffer material is rubber.

[0039] Preferably, a pouring hole 10 is opened on the upper construction side of the wall body 14 of the structure; the airtight filling material filled inside the wall body 14 is high-grade concrete.

[0040] As a preference, the repa...

Embodiment 2

[0044] A method for constructing a mine damper with a self-repairing function, comprising the following steps:

[0045] (1) Install the inner and outer door frames at the position where the damper is opened, and fill the space between the two door frames with materials such as foam and rubber, and the distance between the inner and outer door frames is 100mm;

[0046] (2) Grooving is made on the surrounding rock wall of the roadway, and the depth of the groove is not less than 200mm. After cutting, the foundation and vault are built according to the shape and size of the outer door frame;

[0047](3) Two inverted U-shaped main slurry delivery pipes 4 are installed at a distance of 100mm from the surrounding rock wall and the vault, and four straight line main slurry delivery pipes 4 at the same height as the outer door frame are respectively installed at a position of 100mm from the outer door frame , an air hole 3 is set on the top of the inverted U-shaped main slurry pipe, a...

Embodiment 3

[0054] pass figure 1 and figure 2 It can be seen that a mine damper with self-repairing function includes a damper 9, a door frame and a structure for installing the door frame, the structure includes a foundation, a wall 14 and a vault 1, and the wall of the structure The inside of 14 is filled with a closed filling material, and a repair pipe 5 equipped with an adhesive is distributed inside the closed filling material, and the repair pipe 5 is a brittle pipe.

[0055] As a preference, the door frame is composed of an outer door frame 6 and an inner door frame 7, the distance between the two layers of door frames is 60 mm, and a buffer material 8 is filled in the middle of the inner and outer door frames, and the buffer material is selected from foam.

[0056] Preferably, a pouring hole 10 is opened on the upper construction side of the wall body 14 of the structure; the airtight filling material filled inside the wall body 14 is foamed concrete.

[0057] As a preference,...

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Abstract

The invention belongs to the technical field of underground coal mine air doors, in particular to a mine air door with the self-repairing function and a construction method thereof. The air door is characterized in that an airtight filling material is poured into a construction body wall for installing a door frame, the filling material is provided with a dual-component adhesive repairing pipe network, when the wall is cracked, a repairing pipe is broken under the stress effect, the adhesive inside the pipe is released, and the purpose of rapidly healing wall cracks is achieved. Compared with a traditional air door construction method, the air door has the remarkable advantages of being simple in structure, high in anti-pressure ability, capable of achieving self-repairing and long in service life.

Description

technical field [0001] The invention belongs to the technical field of downhole dampers in coal mines, and in particular relates to a mine damper with a self-repairing function and a construction method thereof. Background technique [0002] The damper is an important ventilation facility in coal mines. It is installed in the roadway that does not allow wind flow or part of the wind flow to pass through, but requires pedestrians and vehicles to pass. It plays an important role, and the stability of the wall where the damper is installed is very important for the normal use of the damper. With the continuous expansion of the scope of mine mining, the periodic ground pressure of the roadway is obvious, and the wall of the damper is often affected by the mining, and the wall is damaged, and the door frame of the damper is deformed and broken, which leads to serious internal air leakage, which is harmful to the mine ventilation system. It has a great impact on the safety, stabi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F1/10E21F17/103
CPCE21F1/10E21F17/103
Inventor 胡相明吴明跃程卫民
Owner SHANDONG UNIV OF SCI & TECH