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A method for prevention and control of downhole rockburst

A technology of rockburst and axial direction, which is applied in the direction of earth cube drilling, mining equipment, mining equipment, etc., can solve the problems of rockburst prevention and control in insufficient mining areas, and achieve the effects of quick implementation, improved construction efficiency, and improved work efficiency

Active Publication Date: 2020-08-28
WUHAN INSTITUTE OF TECHNOLOGY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The treatment of mine rockburst needs to consider the mining vacancy, the mining method of the mine, and the delayed impact of rockburst caused by the disturbance of the nearby surrounding rock caused by the mining of the adjacent mine.

Method used

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  • A method for prevention and control of downhole rockburst
  • A method for prevention and control of downhole rockburst
  • A method for prevention and control of downhole rockburst

Examples

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Embodiment Construction

[0024] The following examples further illustrate the technical solutions of the present invention, but are not intended to limit the protection scope of the present invention.

[0025] Taking the main roadway in the protected area as an example, refer to the attached figure 1 shown. In order to reduce the rockburst phenomenon caused by the disturbance of the surrounding rock of the main roadway in the protection area A by the excavation of the rock mass in the mining area C, the invention adds a disturbance reduction area B between the protection area A and the mining area C. An anti-disturbance groove 4 is excavated on the rock roof 7 of the disturbance reduction area to shield the stress wave generated by mining disturbance in the mining area C.

[0026] During the construction process of the project, first of all, excavate the main underground roadway according to the mine construction design, timely remove slag and remove risks from the roof rock mass of the face of the m...

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Abstract

The invention discloses a prevention and control method for downhole rockburst. The method comprises the following steps that an interference reduction area is reserved between a protection area and arecovery area; an anti-interference groove which is parallel to the axis of the protection area is formed in a top plate of the interference reduction area. According to the prevention and control method for downhole rockburst, with the theory of a rockburst mechanism as a basis, with a main influence factor of downhole rockburst as a staring point, it is put forward that the construction efficiency can be effectively improved on the premise of guaranteeing the safety of downhole construction; the anti-interference groove is easy to operate, quick to implement and convenient to form; the implementation cost of the anti-interference groove is lower than that of supporting and protection only with surrounding rock. According to the prevention and control method for downhole rockburst, withthe rockburst theory as the basis, the anti-interference groove is easy to operate, quick to implement and convenient to form, the working efficiency is improved, the construction safety is also guaranteed, the supporting and protection input of a mine is better lowered, and the method has high practicability.

Description

technical field [0001] The invention belongs to the technical field of mining engineering, and in particular relates to an underground rock burst prevention method. Background technique [0002] Rockburst is a dynamic instability phenomenon in which the surrounding rock is suddenly destroyed due to the excavation of the deep buried rock mass, which destroys the mechanical balance of the surrounding rock, and the stress is concentrated in a short time, accompanied by the explosive release of the accumulated strain energy of the rock. . There are many manifestations of rockbursts, including bursting and peeling, ejection, large-scale collapse and even mine earthquakes, etc., which often cause casualties and damage to construction equipment. [0003] With the gradual depletion of shallow mineral resources, mining enterprises have to mine in the middle and deep underground. Due to the increase of mining depth, rockburst problems caused by complex geological environments such a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D20/00E21D15/00E21F17/00
CPCE21D15/00E21D20/00E21F17/00
Inventor 吝曼卿张电吉倪小山柴修伟习本军杨敏彭亚利周磊王东张兰李兰
Owner WUHAN INSTITUTE OF TECHNOLOGY
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