Mutation effect of acoustic and electromagnetic emissions of hard rock impact failure
To reveal acoustic emission and electromagnetic emission effects during hard rock impact failure is a crucial issue for monitoring and warning rockburst risk induced by hard roof fracture and fall. The presented research focuses on acoustic emission and electromagnetic emission and microseismic effe...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2019-01-01
|
| Series: | International Journal of Distributed Sensor Networks |
| Online Access: | https://doi.org/10.1177/1550147718824473 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849410761309290496 |
|---|---|
| author | Yang Liu Cai-Ping Lu Heng Zhang |
| author_facet | Yang Liu Cai-Ping Lu Heng Zhang |
| author_sort | Yang Liu |
| collection | DOAJ |
| description | To reveal acoustic emission and electromagnetic emission effects during hard rock impact failure is a crucial issue for monitoring and warning rockburst risk induced by hard roof fracture and fall. The presented research focuses on acoustic emission and electromagnetic emission and microseismic effects detected during laboratory tests and by in situ multi-parameter observations, and the field observations agreed satisfactorily with the experimental evidences. The following main conclusions were drawn: (1) the stress level, frequency of micro-cracks, and impact failure regularity of hard rocks can be revealed with electromagnetic emission and acoustic emission/microseismic parameters, respectively; (2) acoustic emission/microseismic event counts can directly reveal the cracks change in rocks, and the initiation, propagation, and coalescence of micro-cracks can be presented as first increase, followed by decrease in acoustic emission/microseismic event counts; (3) in most cases, only when stress suddenly decreases or the rock final collapses, acoustic emissions show obviously abnormal; and (4) acoustic emission/microseismic can be more effectively applied to warn rockburst danger. The above conclusions may shed light on the effective monitoring and warning methods of rockburst triggered by hard roof fall, and events contribute to some interpretations to originally transient precursors of hard rock fracturing. |
| format | Article |
| id | doaj-art-58f1be7bffcd4f4ab77adabfab3e0638 |
| institution | Kabale University |
| issn | 1550-1477 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Distributed Sensor Networks |
| spelling | doaj-art-58f1be7bffcd4f4ab77adabfab3e06382025-08-20T03:35:00ZengWileyInternational Journal of Distributed Sensor Networks1550-14772019-01-011510.1177/1550147718824473Mutation effect of acoustic and electromagnetic emissions of hard rock impact failureYang Liu0Cai-Ping Lu1Heng Zhang2Key Laboratory of Deep Coal Resource Mining (Ministry of Education), School of Mines, China University of Mining and Technology, Xuzhou, P.R. ChinaDepartment of Civil Engineering and Lassonde Institute, University of Toronto, Toronto, ON, CanadaKey Laboratory of Deep Coal Resource Mining (Ministry of Education), School of Mines, China University of Mining and Technology, Xuzhou, P.R. ChinaTo reveal acoustic emission and electromagnetic emission effects during hard rock impact failure is a crucial issue for monitoring and warning rockburst risk induced by hard roof fracture and fall. The presented research focuses on acoustic emission and electromagnetic emission and microseismic effects detected during laboratory tests and by in situ multi-parameter observations, and the field observations agreed satisfactorily with the experimental evidences. The following main conclusions were drawn: (1) the stress level, frequency of micro-cracks, and impact failure regularity of hard rocks can be revealed with electromagnetic emission and acoustic emission/microseismic parameters, respectively; (2) acoustic emission/microseismic event counts can directly reveal the cracks change in rocks, and the initiation, propagation, and coalescence of micro-cracks can be presented as first increase, followed by decrease in acoustic emission/microseismic event counts; (3) in most cases, only when stress suddenly decreases or the rock final collapses, acoustic emissions show obviously abnormal; and (4) acoustic emission/microseismic can be more effectively applied to warn rockburst danger. The above conclusions may shed light on the effective monitoring and warning methods of rockburst triggered by hard roof fall, and events contribute to some interpretations to originally transient precursors of hard rock fracturing.https://doi.org/10.1177/1550147718824473 |
| spellingShingle | Yang Liu Cai-Ping Lu Heng Zhang Mutation effect of acoustic and electromagnetic emissions of hard rock impact failure International Journal of Distributed Sensor Networks |
| title | Mutation effect of acoustic and electromagnetic emissions of hard rock impact failure |
| title_full | Mutation effect of acoustic and electromagnetic emissions of hard rock impact failure |
| title_fullStr | Mutation effect of acoustic and electromagnetic emissions of hard rock impact failure |
| title_full_unstemmed | Mutation effect of acoustic and electromagnetic emissions of hard rock impact failure |
| title_short | Mutation effect of acoustic and electromagnetic emissions of hard rock impact failure |
| title_sort | mutation effect of acoustic and electromagnetic emissions of hard rock impact failure |
| url | https://doi.org/10.1177/1550147718824473 |
| work_keys_str_mv | AT yangliu mutationeffectofacousticandelectromagneticemissionsofhardrockimpactfailure AT caipinglu mutationeffectofacousticandelectromagneticemissionsofhardrockimpactfailure AT hengzhang mutationeffectofacousticandelectromagneticemissionsofhardrockimpactfailure |