Mechanisms of Mining Seismicity under Large Scale Exploitation with Multikey Strata
The dynamic disasters are aggravating with the increase of exploitation scale and intensity in Chinese coal mines, to further understand this problem, we studied the mechanisms of mining tremors induced by key strata movement and instability under large scale exploitation. First the mechanisms were...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2015-01-01
|
| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2015/313069 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832553349873926144 |
|---|---|
| author | Hu He Linming Dou Anye Cao Jun Fan |
| author_facet | Hu He Linming Dou Anye Cao Jun Fan |
| author_sort | Hu He |
| collection | DOAJ |
| description | The dynamic disasters are aggravating with the increase of exploitation scale and intensity in Chinese coal mines, to further understand this problem, we studied the mechanisms of mining tremors induced by key strata movement and instability under large scale exploitation. First the mechanisms were categorized into two groups that is main key strata fracture and movement as well as subkey strata instability again under adjacent mining activities. Based on the key strata theory in ground control we revealed three basic mechanisms of key strata destabilization that are rotary and sliding of low subkey strata, shear sliding of the high subkey strata, and the main key strata rupture and cave at limit span, respectively. The microseismic observing systems were applied to monitor the mining tremor events and verify the theoretical analysis in different coal mines. The characteristics of time-space evolution of tremors show that low inferior key strata causing the most, followed by the high inferior key strata and the main key strata least, however the released energy was just opposite. |
| format | Article |
| id | doaj-art-9efe2568c75e47cf83fc199b3c6ee1a2 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-9efe2568c75e47cf83fc199b3c6ee1a22025-02-03T05:54:18ZengWileyShock and Vibration1070-96221875-92032015-01-01201510.1155/2015/313069313069Mechanisms of Mining Seismicity under Large Scale Exploitation with Multikey StrataHu He0Linming Dou1Anye Cao2Jun Fan3School of Resource and Earth Science, China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaState Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaState Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaState Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaThe dynamic disasters are aggravating with the increase of exploitation scale and intensity in Chinese coal mines, to further understand this problem, we studied the mechanisms of mining tremors induced by key strata movement and instability under large scale exploitation. First the mechanisms were categorized into two groups that is main key strata fracture and movement as well as subkey strata instability again under adjacent mining activities. Based on the key strata theory in ground control we revealed three basic mechanisms of key strata destabilization that are rotary and sliding of low subkey strata, shear sliding of the high subkey strata, and the main key strata rupture and cave at limit span, respectively. The microseismic observing systems were applied to monitor the mining tremor events and verify the theoretical analysis in different coal mines. The characteristics of time-space evolution of tremors show that low inferior key strata causing the most, followed by the high inferior key strata and the main key strata least, however the released energy was just opposite.http://dx.doi.org/10.1155/2015/313069 |
| spellingShingle | Hu He Linming Dou Anye Cao Jun Fan Mechanisms of Mining Seismicity under Large Scale Exploitation with Multikey Strata Shock and Vibration |
| title | Mechanisms of Mining Seismicity under Large Scale Exploitation with Multikey Strata |
| title_full | Mechanisms of Mining Seismicity under Large Scale Exploitation with Multikey Strata |
| title_fullStr | Mechanisms of Mining Seismicity under Large Scale Exploitation with Multikey Strata |
| title_full_unstemmed | Mechanisms of Mining Seismicity under Large Scale Exploitation with Multikey Strata |
| title_short | Mechanisms of Mining Seismicity under Large Scale Exploitation with Multikey Strata |
| title_sort | mechanisms of mining seismicity under large scale exploitation with multikey strata |
| url | http://dx.doi.org/10.1155/2015/313069 |
| work_keys_str_mv | AT huhe mechanismsofminingseismicityunderlargescaleexploitationwithmultikeystrata AT linmingdou mechanismsofminingseismicityunderlargescaleexploitationwithmultikeystrata AT anyecao mechanismsofminingseismicityunderlargescaleexploitationwithmultikeystrata AT junfan mechanismsofminingseismicityunderlargescaleexploitationwithmultikeystrata |