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Design method and system of energy-absorbing support in deep roadway

A design method and technology of roadway, applied in tunnels, mining equipment, earth-moving drilling, etc., can solve the problems of prevention and control of rock burst, energy accumulation, rock burst, etc., and achieve high safety, wide applicability, and operability. strong effect

Active Publication Date: 2022-01-28
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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  • Design method and system of energy-absorbing support in deep roadway
  • Design method and system of energy-absorbing support in deep roadway

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Comparison scheme
Effect test

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 design method and system for energy-absorbing support of a deep roadway, which belongs to the technical field of coal mining safety control, and includes the following steps and processes: establishing a surrounding rock energy calculation model, calculating and obtaining the maximum energy release when the roadway overburden is broken, The energy difference coefficient between the designed roadway and the base roadway; according to the maximum energy release and energy difference coefficient of the base roadway, calculate the maximum energy release when the overlying rock of the designed roadway breaks; obtain the energy-absorbing performance parameters of the energy-absorbing support, and calculate The maximum energy release of the roadway and the energy-absorbing performance parameters of the energy-absorbing support parts are used to obtain the basic parameters of the energy-absorbing support; the basic parameters of the energy-absorbing support are checked for support strength and economy, and the optimal basic parameters of the energy-absorbing support are determined , and finally form the roadway support scheme. The invention carries out the design of energy-absorbing support based on the energy accumulated in the surrounding rock of the roadway, and can effectively prevent dynamic disasters such as rock bursts.

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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Patent Type & Authority Patents(China)
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)