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Dynamic induction experiment device and method for coal and gas outburst

A technology of gas outburst and experimental equipment, applied in the direction of measuring equipment, material inspection products, instruments, etc., can solve the problems of starting energy prediction that plagues laboratory simulation, etc., and achieve the effect of improving the success rate of experiments and ensuring the success of experiments

Active Publication Date: 2020-08-25
CCTEG CHINA COAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to the influence of the characteristics of the induction method and the test methods, the prediction of the start-up energy of the protrusion has always been a problem that plagues the laboratory simulation.

Method used

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  • Dynamic induction experiment device and method for coal and gas outburst
  • Dynamic induction experiment device and method for coal and gas outburst
  • Dynamic induction experiment device and method for coal and gas outburst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] This embodiment 1 describes a power-induced experimental device for coal and gas outburst.

[0061] Such as figure 1 As shown, the experimental device includes an airtight baffle 1, a conduit 2, a simulated bullet 3, and a bullet accelerating device.

[0062] Wherein, the airtight baffle 1 is installed on the position of the protruding window 5 protruding from the simulated experiment box 4 through the flange 7 .

[0063]The function of the airtight baffle plate 1 is to block the simulated coal body 6 and high-pressure gas in the protruding simulated test box 4 .

[0064] Such as figure 2 As shown, the protruding simulation test box 4 is a conventional structure in the field. The function of the protruding simulation test box 4 in this embodiment 1 is to load the stress and air pressure inside the test box to the conditions that can protrude.

[0065] The protruding simulation experiment box 4 is a cubic structure, and a gas pressure pipeline is introduced at the bo...

Embodiment 2

[0104] This embodiment 2 describes a dynamic induction experiment method of coal and gas outburst. The power-induced experimental device used in this method is based on the power-induced experimental device for coal and gas outburst in Example 1 above.

[0105] Such as Figure 4 As shown, a coal and gas outburst dynamic induced experimental method includes the following steps:

[0106] I. According to the material, diameter and thickness parameters of the airtight baffle, the broken energy E of the baffle is tested a .

[0107] II. Load the stress and air pressure of the protruding simulation experiment box to the conditions that can protrude.

[0108] Specifically, firstly, the loading energy is calculated according to the gas pressure, coal elastic modulus, stress and strain parameters in the prominent simulation test box; wherein, the loading energy includes the gas internal energy E g and coal elastic potential energy E c , the calculation formulas are as follows:

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Abstract

The invention discloses a dynamic induction experiment device and method for coal and gas outburst. The dynamic induction experiment device comprises a closed baffle, a guide pipe, a simulation bullet, a speed sensor and a bullet acceleration device. The closed baffle is arranged at the protruding window of the protruding simulation experiment box through a flange, and the closed baffle blocks thesimulation coal body in the protruding simulation experiment box and the high-pressure gas box body. The guide pipe is located outside the protruding simulation experiment box, and one end of the guide pipe extends to the outer side surface of the closed baffle. The simulation bullet is located in the guide pipe and can move in the axial direction of the guide pipe. The bullet acceleration deviceis positioned at the other end of the guide pipe and is configured to accelerate the simulated bullet in the guide pipe. The speed sensor is installed on the outer side of the protruding window. According to the invention, dynamic outburst induction of coal and gas outburst can be realized, quantification and controllability of outburst induction energy can be realized, and the experiment successrate can be improved.

Description

technical field [0001] The invention relates to a power-induced experimental device and method for coal and gas outburst. Background technique [0002] The mechanism of coal and gas outburst (hereinafter referred to as "outburst") is still unclear, which leads to the diversification of evolution analysis forms of the outburst catastrophe process. There are many cases of outburst induced by dynamic effects such as blasting in coal mines, especially in the early outburst accidents, which accounted for more than 50%. Therefore, the study of dynamic outburst simulation experiments plays an important role in supporting the outburst mechanism research. [0003] Physical simulation experiments are an important means to highlight developmental mechanisms. At present, the outstanding simulations carried out at home and abroad are mainly based on the different tests carried out on the basis of the closed box structure. Among them, the three methods of inducing protrusions in the outs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/22
CPCG01N33/222
Inventor 刘永茜霍中刚舒龙勇李宏艳孙中学张书林王维华孟涛潘多伟
Owner CCTEG CHINA COAL RES INST