Qiang Liu
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Interests
Qiang Liu has a total of 7 co-authors. Here are the top co-authors by number of shared publications:
- Guifeng Wang
School of Mines, China University of Mining and Technology, Xuzhou 221116, China
1 shared publication - Liming Qiu
School of Resources and Safety Engineering, University of Science and Technology Beijing, Beijing 100083, China
1 shared publication - Yingjie Zhao
School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
1 shared publication - Zehua Niu
State Key Laboratory of Coking Coal Resources Green Exploitation, Pingdingshan 467000, China
1 shared publication - Zhanbiao Yang
China Pingmei Shenma Holdings Group Co., Ltd
1 shared publication - Zhaohui Cao
School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
1 shared publication
Latest Publications
- Open Access
Research on Wave Velocity Disparity Characteristics between Impact and Outburst Coal Seams and Tomography of Hazardous Zones
To investigate the variations in wave velocity fields between impact and outburst coal seams, we analyzed the fluctuations in wave velocity under loading conditions for both coal types. A comprehensive methodology was developed to correct coal wave velocities in response to stress and gas presence, which was then applied to field assessments of hazardous regions. Our findings reveal significant differences in wave velocity alterations between impact and outburst coal seams during loading-induced failure. Gas pressure exhibits a negative correlation with wave velocity in outburst coal (correlation coefficient R2 = 0.86), whereas wave velocity in impact coal demonstrates a positive correlation with stress (R2 = 0.63). A robust methodology for correcting coal wave velocities in response to stress and gas presence was established to enable more accurate measurement of wave velocity changes. In field applications, seismic wave computed tomography identified stress anomalies that closelycorresponded with geological structures and mining operations, effectively pinpointing hazardous zones. The abnormal wave velocity coefficient ranges for outburst coal seams and impact coal seams are −0.6 to 0.25 and −0.35 to 0.16, respectively, which correspond well with the field stress distribution.
Open AccessResearch on Wave Velocity Disparity Characteristics between Impact and Outburst Coal Seams and Tomography of Hazardous Zones
To investigate the variations in wave velocity fields between impact and outburst coal seams, we analyzed the fluctuations in wave velocity under loading conditions for both coal types. A comprehensive methodology was developed to correct coal wave velocities in response to stress and gas presence, which was then applied to field assessments of hazardous regions. Our findings reveal significant differences in wave velocity alterations between impact and outburst coal seams during loading-induced failure. Gas pressure exhibits a negative correlation with wave velocity in outburst coal (correlation coefficient R2 = 0.86), whereas wave velocity in impact coal demonstrates a positive correlation with stress (R2 = 0.63). A robust methodology for correcting coal wave velocities in response to stress and gas presence was established to enable more accurate measurement of wave velocity changes. In field applications, seismic wave computed tomography identified stress anomalies that closelycorresponded with geological structures and mining operations, effectively pinpointing hazardous zones. The abnormal wave velocity coefficient ranges for outburst coal seams and impact coal seams are −0.6 to 0.25 and −0.35 to 0.16, respectively, which correspond well with the field stress distribution.