Disaster mechanism and dynamic manifestation control of rock burst in the Ordos Mining Area
The layout of coal mining in our country is gradually being optimized towards the western regions, the mining depth is constantly extending deeper, and the hazards of rock burst are becoming increasingly severe. To achieve effective prevention and control of rock bursts in Ordos Mining Area, the pri...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Safety in Coal Mines
2025-07-01
|
| Series: | Meikuang Anquan |
| Subjects: | |
| Online Access: | https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20240896 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850116673329168384 |
|---|---|
| author | Zhen WU Heng GAO Zhaofeng FAN Tianliang HU Xiaohu WANG Xuegang WANG Jinpeng YAO |
| author_facet | Zhen WU Heng GAO Zhaofeng FAN Tianliang HU Xiaohu WANG Xuegang WANG Jinpeng YAO |
| author_sort | Zhen WU |
| collection | DOAJ |
| description | The layout of coal mining in our country is gradually being optimized towards the western regions, the mining depth is constantly extending deeper, and the hazards of rock burst are becoming increasingly severe. To achieve effective prevention and control of rock bursts in Ordos Mining Area, the primary task is to clarify the main controlling factors causing these rock bursts. Based on the investigation of 28 coal mines in Ordos Mining Area with burial depth of over 400 meters, four geological controlling factors causing rock bursts have been summarized: mining depth, coal seam thickness, coal-rock burst tendency, and roof rock structure, along with two engineering controlling factors: coal pillar design and extraction speed. The mechanical mechanisms of each main controlling factor influencing the occurrence of rock burst were analyzed. In terms of the main geological control factors, the increase in mining depth leads to an increase in coal and rock stress, and the thickness of coal seams shows a positive correlation with the possibility of rock burst. The burst tendency of coal and rock is an inherent factor measuring the ability of coal and rock to accumulate and release energy during burst events. A hard and thick suspended roof structure can lead to increased pre-stress concentration, and when the roof breaks, it releases a large amount of kinetic energy, forming dynamic loads that act on the surrounding rock of tunnels, inducing rock bursts. In terms of the main control factors of the project, unreasonable width of coal pillars leads to stress concentration and energy accumulation which are significant factors causing rock bursts in retreating tunnels. Excessive extraction speed increases the length of suspended roofs and the degree of stress concentration, resulting in more kinetic energy being released when the roof breaks. Based on these findings, a comparative analysis of dynamic events during the mining operations of Hongqinghe Coal Mine, Menkeqing Coal Mine, Nalinhe Coal Mine, and Shilawusu Coal Mine was conducted. Recommendations for coordinated regional and local prevention and control strategies for rock bursts are proposed. |
| format | Article |
| id | doaj-art-02e65e370119476a95ca025cb3c646e5 |
| institution | OA Journals |
| issn | 1003-496X |
| language | zho |
| publishDate | 2025-07-01 |
| publisher | Editorial Office of Safety in Coal Mines |
| record_format | Article |
| series | Meikuang Anquan |
| spelling | doaj-art-02e65e370119476a95ca025cb3c646e52025-08-20T02:36:16ZzhoEditorial Office of Safety in Coal MinesMeikuang Anquan1003-496X2025-07-01567879710.13347/j.cnki.mkaq.20240896cMKAQ20240896Disaster mechanism and dynamic manifestation control of rock burst in the Ordos Mining AreaZhen WU0Heng GAO1Zhaofeng FAN2Tianliang HU3Xiaohu WANG4Xuegang WANG5Jinpeng YAO6Inner Mongolia Haosheng Coal Industry Co., Ltd., Ordos 017000, ChinaInner Mongolia Haosheng Coal Industry Co., Ltd., Ordos 017000, ChinaInner Mongolia Haosheng Coal Industry Co., Ltd., Ordos 017000, ChinaEmergency Management Bureau of Yijinhuoluo Banner, Ordos City, Inner Mongolia Autonomous Region, Ordos 017299, ChinaEmergency Management Bureau of Yijinhuoluo Banner, Ordos City, Inner Mongolia Autonomous Region, Ordos 017299, ChinaEmergency Management Bureau of Yijinhuoluo Banner, Ordos City, Inner Mongolia Autonomous Region, Ordos 017299, ChinaCollege of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaThe layout of coal mining in our country is gradually being optimized towards the western regions, the mining depth is constantly extending deeper, and the hazards of rock burst are becoming increasingly severe. To achieve effective prevention and control of rock bursts in Ordos Mining Area, the primary task is to clarify the main controlling factors causing these rock bursts. Based on the investigation of 28 coal mines in Ordos Mining Area with burial depth of over 400 meters, four geological controlling factors causing rock bursts have been summarized: mining depth, coal seam thickness, coal-rock burst tendency, and roof rock structure, along with two engineering controlling factors: coal pillar design and extraction speed. The mechanical mechanisms of each main controlling factor influencing the occurrence of rock burst were analyzed. In terms of the main geological control factors, the increase in mining depth leads to an increase in coal and rock stress, and the thickness of coal seams shows a positive correlation with the possibility of rock burst. The burst tendency of coal and rock is an inherent factor measuring the ability of coal and rock to accumulate and release energy during burst events. A hard and thick suspended roof structure can lead to increased pre-stress concentration, and when the roof breaks, it releases a large amount of kinetic energy, forming dynamic loads that act on the surrounding rock of tunnels, inducing rock bursts. In terms of the main control factors of the project, unreasonable width of coal pillars leads to stress concentration and energy accumulation which are significant factors causing rock bursts in retreating tunnels. Excessive extraction speed increases the length of suspended roofs and the degree of stress concentration, resulting in more kinetic energy being released when the roof breaks. Based on these findings, a comparative analysis of dynamic events during the mining operations of Hongqinghe Coal Mine, Menkeqing Coal Mine, Nalinhe Coal Mine, and Shilawusu Coal Mine was conducted. Recommendations for coordinated regional and local prevention and control strategies for rock bursts are proposed.https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20240896ordos mining arearock burstdisaster-causing mechanismmain controlling factordynamic manifestationregional prevention and control |
| spellingShingle | Zhen WU Heng GAO Zhaofeng FAN Tianliang HU Xiaohu WANG Xuegang WANG Jinpeng YAO Disaster mechanism and dynamic manifestation control of rock burst in the Ordos Mining Area Meikuang Anquan ordos mining area rock burst disaster-causing mechanism main controlling factor dynamic manifestation regional prevention and control |
| title | Disaster mechanism and dynamic manifestation control of rock burst in the Ordos Mining Area |
| title_full | Disaster mechanism and dynamic manifestation control of rock burst in the Ordos Mining Area |
| title_fullStr | Disaster mechanism and dynamic manifestation control of rock burst in the Ordos Mining Area |
| title_full_unstemmed | Disaster mechanism and dynamic manifestation control of rock burst in the Ordos Mining Area |
| title_short | Disaster mechanism and dynamic manifestation control of rock burst in the Ordos Mining Area |
| title_sort | disaster mechanism and dynamic manifestation control of rock burst in the ordos mining area |
| topic | ordos mining area rock burst disaster-causing mechanism main controlling factor dynamic manifestation regional prevention and control |
| url | https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20240896 |
| work_keys_str_mv | AT zhenwu disastermechanismanddynamicmanifestationcontrolofrockburstintheordosminingarea AT henggao disastermechanismanddynamicmanifestationcontrolofrockburstintheordosminingarea AT zhaofengfan disastermechanismanddynamicmanifestationcontrolofrockburstintheordosminingarea AT tianlianghu disastermechanismanddynamicmanifestationcontrolofrockburstintheordosminingarea AT xiaohuwang disastermechanismanddynamicmanifestationcontrolofrockburstintheordosminingarea AT xuegangwang disastermechanismanddynamicmanifestationcontrolofrockburstintheordosminingarea AT jinpengyao disastermechanismanddynamicmanifestationcontrolofrockburstintheordosminingarea |