Experimental Accuracy and Stability of Gas Outburst Experimental System

Gas outburst is an important issue in deep coal mining. At present, the gas-rock coupling change mechanism and intensity prediction of gas outburst are not clear. The research of gas outburst simulation experiment is particularly important. The State Key Laboratory of Gas Disaster Monitoring and Eme...

Full description

Saved in:
Bibliographic Details
Published in:Geofluids 2021, Vol.2021, p.1-9
Main Authors: Liu, Yanbao, Sun, Haitao, Wang, Bo, Dai, Linchao, Cao, Jie
Format: Article
Language:English
Subjects:
Accuracy
Analysis
Carbon dioxide
Coal gas outbursts
Coal industry
Coal mines
Coal mining
Cracks
Deformation
Design parameters
Disasters
Energy
Energy conversion
Energy sources
Experiments
Fatalities
Force and energy
Mechanical properties
Occupational health and safety
Physical simulation
Sensors
Simulation
Simulation analysis
Stability
Stability analysis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Gas outburst is an important issue in deep coal mining. At present, the gas-rock coupling change mechanism and intensity prediction of gas outburst are not clear. The research of gas outburst simulation experiment is particularly important. The State Key Laboratory of Gas Disaster Monitoring and Emergency Technology of China independently developed a large-scale coal and gas outburst physical simulation test system. However, the influence of the design parameters of the testing machine on the stability and accuracy of the simulation experiment is unclear. The article analyzes the energy conversion in the process of gas outburst through experimental simulation phenomena and results. The experimental simulation results show that the energy released by the CO2 gas in similar materials is the most important energy source. The cracks of similar materials increase the nominal volume of similar materials, and the deformation energy stored in similar materials slightly increases. The experimental simulation results are consistent with the actual situation on site. Combined with CAE simulation analysis, the displacement and pressure of the indenter of the experimental machine remained basically unchanged during the experiment, and the system did not produce resonance. Comprehensive analysis shows that the design of the test machine meets the simulation requirements.
ISSN:1468-8115
1468-8123
DOI:10.1155/2021/6678608