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Numerical Simulation Study on Microseismic Characteristics and Rockburst Hazard Prediction in Deep Mining of Steeply Inclined Coal Seams
Numerical Simulation Study on Microseismic Characteristics… A. Lu et al.
https://orcid.org/http://orcid.org/0000-0002-6629-6831
Predicting rockburst disasters is one of the most critical issues in deep rock mechanics. This paper introduces an innovative method for predicting rockburst. The localization and energy level recording of seismic events generated by coal and rock rupture were achieved using numerical simulation methods. The dynamic and static loading characteristics of deep mining in steeply inclined double coal seams were investigated, and rockburst hazards were predicted. The experimental and engineering field investigation results verify the accuracy of the numerical simulation. The energy of seismic events generated by coal-rock rupture is approximately 0.6% of the released strain energy monitored by numerical simulation. After entering deep mining in steeply inclined double coal seams, seismic events gradually spread to the central area of the inclined axis. The frequency and energy of seismic events on roof #B3 + 6 and the concentration of static loading stress gradually exceeded those on the rock pillar, indicating a shift in the main controlling factor of rockburst from the rock pillar to roof #B3 + 6. The rate of increase in rockburst hazard in the northern area was more significant than in the southern area as the mining depth increased. The research results provide a new approach for predicting rockbursts.
The recording of rockburst seismic events in coal and rock was achieved using numerical simulation methods.
The correlation between seismic energy released during coal and rock rupture and the strain energy released was determined.
The positions, frequencies, and energy of microseismic events during the mining of steeply inclined coal seams were documented.
The rockburst hazards and zoning differences of deep mining in steeply inclined coal seams were predicted.
Numerical Simulation Study on Microseismic Characteristics and Rockburst Hazard Prediction in Deep Mining of Steeply Inclined Coal Seams
Numerical Simulation Study on Microseismic Characteristics… A. Lu et al.
https://orcid.org/http://orcid.org/0000-0002-6629-6831
Predicting rockburst disasters is one of the most critical issues in deep rock mechanics. This paper introduces an innovative method for predicting rockburst. The localization and energy level recording of seismic events generated by coal and rock rupture were achieved using numerical simulation methods. The dynamic and static loading characteristics of deep mining in steeply inclined double coal seams were investigated, and rockburst hazards were predicted. The experimental and engineering field investigation results verify the accuracy of the numerical simulation. The energy of seismic events generated by coal-rock rupture is approximately 0.6% of the released strain energy monitored by numerical simulation. After entering deep mining in steeply inclined double coal seams, seismic events gradually spread to the central area of the inclined axis. The frequency and energy of seismic events on roof #B3 + 6 and the concentration of static loading stress gradually exceeded those on the rock pillar, indicating a shift in the main controlling factor of rockburst from the rock pillar to roof #B3 + 6. The rate of increase in rockburst hazard in the northern area was more significant than in the southern area as the mining depth increased. The research results provide a new approach for predicting rockbursts.
The recording of rockburst seismic events in coal and rock was achieved using numerical simulation methods.
The correlation between seismic energy released during coal and rock rupture and the strain energy released was determined.
The positions, frequencies, and energy of microseismic events during the mining of steeply inclined coal seams were documented.
The rockburst hazards and zoning differences of deep mining in steeply inclined coal seams were predicted.
Numerical Simulation Study on Microseismic Characteristics and Rockburst Hazard Prediction in Deep Mining of Steeply Inclined Coal Seams
Numerical Simulation Study on Microseismic Characteristics… A. Lu et al.
https://orcid.org/http://orcid.org/0000-0002-6629-6831
Predicting rockburst disasters is one of the most critical issues in deep rock mechanics. This paper introduces an innovative method for predicting rockburst. The localization and energy level recording of seismic events generated by coal and rock rupture were achieved using numerical simulation methods. The dynamic and static loading characteristics of deep mining in steeply inclined double coal seams were investigated, and rockburst hazards were predicted. The experimental and engineering field investigation results verify the accuracy of the numerical simulation. The energy of seismic events generated by coal-rock rupture is approximately 0.6% of the released strain energy monitored by numerical simulation. After entering deep mining in steeply inclined double coal seams, seismic events gradually spread to the central area of the inclined axis. The frequency and energy of seismic events on roof #B3 + 6 and the concentration of static loading stress gradually exceeded those on the rock pillar, indicating a shift in the main controlling factor of rockburst from the rock pillar to roof #B3 + 6. The rate of increase in rockburst hazard in the northern area was more significant than in the southern area as the mining depth increased. The research results provide a new approach for predicting rockbursts.
The recording of rockburst seismic events in coal and rock was achieved using numerical simulation methods.
The correlation between seismic energy released during coal and rock rupture and the strain energy released was determined.
The positions, frequencies, and energy of microseismic events during the mining of steeply inclined coal seams were documented.
The rockburst hazards and zoning differences of deep mining in steeply inclined coal seams were predicted.
Numerical Simulation Study on Microseismic Characteristics and Rockburst Hazard Prediction in Deep Mining of Steeply Inclined Coal Seams
Numerical Simulation Study on Microseismic Characteristics… A. Lu et al.
Rock Mech Rock Eng
Lu, Anliang (author) / Song, Dazhao (author) / Li, Zhenlei (author) / He, Xueqiu (author) / Zhou, Chao (author) / Qiu, Liming (author)
Rock Mechanics and Rock Engineering ; 58 ; 2465-2486
2025-02-01
22 pages
Article (Journal)
Electronic Resource
English
Numerical simulation , Distribution of seismic events , Steeply inclined coal seams , Dynamic and static loads , Rockburst prediction Engineering , Resources Engineering and Extractive Metallurgy , Earth Sciences , Geology , Geophysics , Geophysics/Geodesy , Civil Engineering , Earth and Environmental Science
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