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Rock burst resistant supporting method suitable for formed roadway

A rockburst and shock-resistant technology, applied in the field of rockburst-resistant support, can solve problems such as roadway support damage, large deformation, surrounding rock and support unit structure damage, etc.

Active Publication Date: 2021-07-13
HUAIBEI PINGYUAN SOFTROCK SUPPORTING ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Coal mines in China are mainly mined underground, and a large number of tunnels need to be excavated underground. Using tunnel support to keep the tunnel smooth and the surrounding rock stable is of great significance to coal mine construction and production. The effect of tunnel support depends on the material strength of the bracket itself, and is also affected by Influenced by a series of factors such as the structural strength of the surrounding rock, the mechanical properties of the support (supporting force and shrinkability), the installation density of the support and the quality of the support, the forming roadway is realized by the support and the surrounding rock under the conditions of mutual restraint and interdependence. Joint bearing, due to the large strain energy stored in the surrounding rock of the roadway, when this part of energy exceeds the strength of the rock mass itself, the accumulated strain energy of the rock mass is released suddenly and violently, resulting in brittle fracture of the rock mass, which is called For rock burst, the deformation speed, large amount of deformation, dense deformation range and poor predictability of the surrounding rock under the complex stress state of the deep well, the rock burst causes the structure of the surrounding rock and the support unit to be destroyed, and the roadway can only pass through the support The strength of the material of the unit is carried. If the structure of the surrounding rock and the supporting unit cannot be reinforced in time, as the deformation of the surrounding rock increases, the resistance of the supporting unit will gradually lose completely, and the supporting unit will be destroyed. Severe deformation and collapse, causing serious damage to roadway support

Method used

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  • Rock burst resistant supporting method suitable for formed roadway
  • Rock burst resistant supporting method suitable for formed roadway
  • Rock burst resistant supporting method suitable for formed roadway

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as Figure 1-4 As shown, a support method for anti-shock ground pressure suitable for formed roadways, including the following steps:

[0032] A: Excavate the roadway (1) underground, build a strong seal (3) on the surrounding rock (2) to shape the roadway (1), and the strength of the strong seal (3) must be strong enough to resist the surrounding rock (2) Due to its own stress requirements, the formed strong and tough seal layer (3) is the key bearing unit of the support system;

[0033] B: The lower surface of the strong sealing layer (3) is provided with an automatic adhesion mechanism (4), and the automatic adhesion mechanism (4) is fixed to the strong sealing layer (3) through the fixing bracket (5), and the adjacent automatic The distance between the adhesion mechanism (4) is 1-2m;

[0034] C: After the automatic adhesion mechanism (4) is fully fixed with the tough seal layer (3), spray a layer of concrete layer (6) so that the automatic adhesion mechanism ...

Embodiment 2

[0042] Such as Figure 2-4 As shown in the figure, a support method suitable for anti-shock ground pressure suitable for forming roadways, including an automatic adhesion mechanism (4) including a pipe body (7), and the inside of the pipe body (7) is provided with a first cavity (8), The second cavity (9) and the third cavity (10), the first cavity (8) and the second cavity (9) are located in the middle of the tube body (7), and the two second cavities (9) are respectively Located at both ends of the first cavity (8), the third cavity (10) is located outside the first cavity (8) and the second cavity (9) to form an annular cavity, the first cavity (8) The interior is filled with a resin agent (15), the interior of the second cavity (9) is filled with a hydrogen peroxide solution (16), and both ends of the first cavity (8) are provided with circular push plates (11). The outer ring of the push plate (11) is provided with a sealing ring (12), the diameter of the sealing ring (1...

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Abstract

The invention discloses a rock burst resistant supporting method suitable for a formed roadway. An automatic adhesion mechanism is arranged, rock burst does not occur in the formed roadway, the automatic adhesion mechanism cannot be damaged, strength support is not provided, when rock burst occurs in the roadway, the automatic adhesion mechanism can rapidly bond a tough sealing layer, so that the structural strength of the tough sealing layer is supplemented in time, and the situations that the roadway is only borne by the material strength of a supporting unit, roadway supporting is seriously damaged, when rock burst occurs, a pipe body of an automatic adhesion mechanism is damaged, and a resin agent in a first cavity, a curing agent in a third cavity, a fluorescent agent and water all flow out of the pipe body are avoided; and the resin agent and the curing agent are mixed in the process of flowing from the pipe body to the crack, polymerization reaction is carried out for curing, the fracture positions of the tough sealing layer and the concrete layer are bonded together, the structural strength of the tough sealing layer and the concrete layer is supplemented in time, and the temporary supporting effect is achieved.

Description

technical field [0001] The invention relates to the technical field of roadway support, in particular to a support method suitable for impact-resistant rock pressure in formed roadways. Background technique [0002] Coal mines in China are mainly mined underground, and a large number of tunnels need to be dug underground. Using tunnel support to keep the tunnel smooth and the surrounding rock stable is of great significance to coal mine construction and production. The effect of tunnel support depends on the material strength of the bracket itself, and is also affected by Influenced by a series of factors such as the structural strength of the surrounding rock, the mechanical properties of the support (supporting force and shrinkability), the installation density of the support and the quality of the support, the forming roadway is realized by the support and the surrounding rock under the conditions of mutual restraint and interdependence. Jointly bearing, due to the large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/00E21D11/10E21F17/18
CPCE21D11/006E21D11/10E21F17/18
Inventor 李明远乔晓纯张延伟张景玉郑庆学张建国胡兆峰胡长岭涂兴子
Owner HUAIBEI PINGYUAN SOFTROCK SUPPORTING ENG TECH
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