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Deep roadway energy absorption support design method and system

A design method and roadway technology, applied in tunnels, tunnel linings, mining equipment, etc., can solve problems such as energy accumulation, prevention of rock burst, and rock burst, and achieve high safety, wide applicability, and strong operability Effect

Active Publication Date: 2021-11-26
CHINA UNIV OF MINING & TECH (BEIJING) +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inventors found that after the surrounding rock of the roadway is depressurized, there will still be residual energy accumulation, and there may still be a risk of rock burst
The support designed by the traditional strength can no longer completely avoid the occurrence of rock burst in deep coal mine roadways
The existing roadway support is mainly designed based on the relationship between the mechanical properties of the support components and the strength of the surrounding rock of the roadway, and it is difficult to fundamentally prevent rock burst

Method used

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  • Deep roadway energy absorption support design method and system
  • Deep roadway energy absorption support design method and system

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Embodiment 1

[0033] This embodiment provides a deep roadway energy-absorbing support design method, such as figure 1 shown, including:

[0034] Establish the calculation model of surrounding rock energy, and calculate the maximum energy release when the overlying rock of the base roadway is broken, and the energy difference coefficient between the designed roadway and the base roadway;

[0035] According to the maximum energy release and energy difference coefficient of the roadway, calculate the maximum energy release when the overlying rock of the designed roadway breaks;

[0036] Obtain the energy-absorbing performance parameters of the energy-absorbing support, and obtain the basic parameters of the energy-absorbing support according to the maximum energy release of the designed roadway and the energy-absorbing performance parameters of the energy-absorbing support;

[0037] The support strength and economical calculations are carried out on the basic parameters of energy-absorbing su...

Embodiment 2

[0069] This embodiment provides a deep roadway energy-absorbing support design system, including:

[0070] The surrounding rock energy calculation model building module is used to establish the surrounding rock energy calculation model, and calculate the maximum energy release when the overlying rock of the base roadway is broken, and the energy difference coefficient between the designed roadway and the base roadway;

[0071] The maximum energy release acquisition module of the designed roadway is used to calculate the maximum energy release of the designed roadway when the overlying rock is broken according to the maximum energy release and the energy difference coefficient of the roadway;

[0072] The energy-absorbing support basic parameter determination module is used to obtain the energy-absorbing performance parameters of the energy-absorbing support, and obtain the energy-absorbing support basic parameters according to the maximum energy release of the designed roadway ...

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Abstract

The invention discloses a deep roadway energy absorption support design method and system, and belongs to the technical field of coal mining safety control. The method comprises the following steps and processes of building a surrounding rock energy calculation model, calculating to obtain the maximum energy release amount when the overlying strata of a basis roadway are broken, and designing an energy difference coefficient between the roadway and the basis roadway; according to the maximum energy release amount and the energy difference coefficient of the roadway, calculating the maximum energy release amount when the overlying strata of the designed roadway are broken; obtaining the energy-absorbing performance parameters of an energy-absorbing supporting piece, and obtaining the energy-absorbing supporting basic parameters according to the maximum energy release amount of the designed roadway and the energy-absorbing performance parameters of the energy-absorbing supporting piece; and carrying out support strength and economical efficiency checking calculation on the energy absorption support basic parameters, determining the optimal energy absorption support basic parameters, and finally forming a roadway support scheme. According to the present invention, the energy-absorbing support design is carried out based on the energy gathered by roadway surrounding rocks, and the dynamic disasters, such as rock burst, etc., can be effectively prevented and controlled.

Description

technical field [0001] The invention relates to the technical field of coal mining safety control, in particular to a design method and system for deep roadway energy-absorbing support. Background technique [0002] With the increase of the mining depth, the high stress characteristics become more obvious, the coal and rock mass breaks more seriously, and the energy accumulation of the roadway surrounding rock becomes more significant, resulting in more frequent strong dynamic disasters such as rock bursts, which seriously threaten the safety of coal mining. . The energy accumulation of roadway surrounding rock is the main factor causing rock burst dynamic disasters. [0003] At present, many mines have carried out effective prevention and control of rock burst by means of roadway drilling and roof cutting to relieve pressure. The essence is to release a large amount of energy accumulated in the roadway surrounding rock by changing the structure of the roadway surrounding r...

Claims

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Application Information

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IPC IPC(8): G06F30/13G06F30/17E21D11/00G06F119/14
CPCG06F30/13G06F30/17E21D11/006G06F2119/14
Inventor 王琦许硕江贝杨军
Owner CHINA UNIV OF MINING & TECH (BEIJING)