Main disaster-causing strata of composite hard roof and bidirectional, high-low position blasting technology for rockburst prevention
Abstract Theoretical analysis, micro-seismic monitoring, and on-site research were used to examine the main disaster-causing strata of composite hard roof, with a particular focus on rockburst in the working face of thick coal seams. A bidirectional, high-low position blasting technology was propose...
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| Format: | Article |
| Language: | English |
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Springer
2025-07-01
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| Series: | Geomechanics and Geophysics for Geo-Energy and Geo-Resources |
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| Online Access: | https://doi.org/10.1007/s40948-025-01020-7 |
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| author | Xukai Dong Junwen Zhang Suilin Zhang Jining Yang Chaorui Xing |
| author_facet | Xukai Dong Junwen Zhang Suilin Zhang Jining Yang Chaorui Xing |
| author_sort | Xukai Dong |
| collection | DOAJ |
| description | Abstract Theoretical analysis, micro-seismic monitoring, and on-site research were used to examine the main disaster-causing strata of composite hard roof, with a particular focus on rockburst in the working face of thick coal seams. A bidirectional, high-low position blasting technology was proposed for rockburst prevention based on the fracture mechanism of composite hard roof. The effectiveness of this method was verified through on-site, micro-seismic monitoring data. The key findings are as follows. (1) The fracture disturbance zone of composite hard roof was 0–117 m above the coal seam; the strong disturbance zone was 0–32 m above the coal seam; the main disaster-causing strata were 0–40 m above. (2) A bidirectional, high-low position blasting technology for composite hard roof was designed. High-low level blasting on the goaf and solid coal sides intensified roof blasting to lower the risk of high-energy vibration events in the disaster layer, which prevented rockburst in practice. The findings provide crucial guidance for ensuring safe mining in rockburst mines and conducting effective hard roof blasting to prevent rockbursts. |
| format | Article |
| id | doaj-art-24d8cba6c4c541f38f1aba9945f30bbb |
| institution | DOAJ |
| issn | 2363-8419 2363-8427 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Springer |
| record_format | Article |
| series | Geomechanics and Geophysics for Geo-Energy and Geo-Resources |
| spelling | doaj-art-24d8cba6c4c541f38f1aba9945f30bbb2025-08-20T03:06:31ZengSpringerGeomechanics and Geophysics for Geo-Energy and Geo-Resources2363-84192363-84272025-07-0111111110.1007/s40948-025-01020-7Main disaster-causing strata of composite hard roof and bidirectional, high-low position blasting technology for rockburst preventionXukai Dong0Junwen Zhang1Suilin Zhang2Jining Yang3Chaorui Xing4China University of Mining and Technology (Beijing)China University of Mining and Technology (Beijing)China University of Mining and Technology (Beijing)China University of Mining and Technology (Beijing)China University of Mining and Technology (Beijing)Abstract Theoretical analysis, micro-seismic monitoring, and on-site research were used to examine the main disaster-causing strata of composite hard roof, with a particular focus on rockburst in the working face of thick coal seams. A bidirectional, high-low position blasting technology was proposed for rockburst prevention based on the fracture mechanism of composite hard roof. The effectiveness of this method was verified through on-site, micro-seismic monitoring data. The key findings are as follows. (1) The fracture disturbance zone of composite hard roof was 0–117 m above the coal seam; the strong disturbance zone was 0–32 m above the coal seam; the main disaster-causing strata were 0–40 m above. (2) A bidirectional, high-low position blasting technology for composite hard roof was designed. High-low level blasting on the goaf and solid coal sides intensified roof blasting to lower the risk of high-energy vibration events in the disaster layer, which prevented rockburst in practice. The findings provide crucial guidance for ensuring safe mining in rockburst mines and conducting effective hard roof blasting to prevent rockbursts.https://doi.org/10.1007/s40948-025-01020-7Disaster-causing strataComposite hard roofMicroseismic monitoringRockburst preventionRoof-blasting methodEngineering application |
| spellingShingle | Xukai Dong Junwen Zhang Suilin Zhang Jining Yang Chaorui Xing Main disaster-causing strata of composite hard roof and bidirectional, high-low position blasting technology for rockburst prevention Geomechanics and Geophysics for Geo-Energy and Geo-Resources Disaster-causing strata Composite hard roof Microseismic monitoring Rockburst prevention Roof-blasting method Engineering application |
| title | Main disaster-causing strata of composite hard roof and bidirectional, high-low position blasting technology for rockburst prevention |
| title_full | Main disaster-causing strata of composite hard roof and bidirectional, high-low position blasting technology for rockburst prevention |
| title_fullStr | Main disaster-causing strata of composite hard roof and bidirectional, high-low position blasting technology for rockburst prevention |
| title_full_unstemmed | Main disaster-causing strata of composite hard roof and bidirectional, high-low position blasting technology for rockburst prevention |
| title_short | Main disaster-causing strata of composite hard roof and bidirectional, high-low position blasting technology for rockburst prevention |
| title_sort | main disaster causing strata of composite hard roof and bidirectional high low position blasting technology for rockburst prevention |
| topic | Disaster-causing strata Composite hard roof Microseismic monitoring Rockburst prevention Roof-blasting method Engineering application |
| url | https://doi.org/10.1007/s40948-025-01020-7 |
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