Acoustic Emission Characteristics and Initiation Mechanism of Instantaneous Rock Burst for Beishan Granite
In this paper, the instantaneous rock burst test of Beishan granite is carried out by using a deep rock burst simulation test system and an acoustic emission monitoring system. The acoustic emission data were monitored in real time during the test. The variation of the number and energy of acoustic...
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| Format: | Article |
| Language: | English |
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Wiley
2024-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2024/6813580 |
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| _version_ | 1849401183525928960 |
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| author | Chaosheng Wang Hao Wan Jianjun Ma Xianglin Chen |
| author_facet | Chaosheng Wang Hao Wan Jianjun Ma Xianglin Chen |
| author_sort | Chaosheng Wang |
| collection | DOAJ |
| description | In this paper, the instantaneous rock burst test of Beishan granite is carried out by using a deep rock burst simulation test system and an acoustic emission monitoring system. The acoustic emission data were monitored in real time during the test. The variation of the number and energy of acoustic emission events was studied, and the distribution characteristics of rock burst debris were analyzed. Based on plate and shell mechanics, the failure process of surrounding rock is discussed from the perspective of structural stability. The results show that (1) when the vertical stress reaches 171.31 MPa, the specimen is destroyed and the number of acoustic emission events and cumulative absolute energy before the specimen is destroyed increase sharply. (2) The debris generated by rock burst is mainly composed of slab debris, flaky debris, and thin flaky debris, accounting for 93.53% of the total debris. (3) When the length or height of the rock slab is constant, the maximum tensile stress in the rock slab decreases nonlinearly with the increase of rock slab thickness. For the same size of the rock slab, the farther away from the roadway wall, the greater the maximum tensile stress in the rock slab. (4) When the thickness of the rock slab is constant, the maximum tensile stress in the rock slab increases nonlinearly with the increase of height to thickness ratio K. When the ratio of height to thickness K is constant, the maximum tensile stress in the rock slab increases with the increase of rock slab thickness h. (5) With the increase of covering depth, the critical failure thickness of the rock slab decreases nonlinearly and the surplus energy increases nonlinearly. |
| format | Article |
| id | doaj-art-89c1d51f74814837b63215e2bfe7d010 |
| institution | Kabale University |
| issn | 1875-9203 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-89c1d51f74814837b63215e2bfe7d0102025-08-20T03:37:50ZengWileyShock and Vibration1875-92032024-01-01202410.1155/2024/6813580Acoustic Emission Characteristics and Initiation Mechanism of Instantaneous Rock Burst for Beishan GraniteChaosheng Wang0Hao Wan1Jianjun Ma2Xianglin Chen3School of Civil Engineering and ArchitectureSchool of Civil Engineering and ArchitectureSchool of Civil Engineering and ArchitectureSchool of Civil Engineering and ArchitectureIn this paper, the instantaneous rock burst test of Beishan granite is carried out by using a deep rock burst simulation test system and an acoustic emission monitoring system. The acoustic emission data were monitored in real time during the test. The variation of the number and energy of acoustic emission events was studied, and the distribution characteristics of rock burst debris were analyzed. Based on plate and shell mechanics, the failure process of surrounding rock is discussed from the perspective of structural stability. The results show that (1) when the vertical stress reaches 171.31 MPa, the specimen is destroyed and the number of acoustic emission events and cumulative absolute energy before the specimen is destroyed increase sharply. (2) The debris generated by rock burst is mainly composed of slab debris, flaky debris, and thin flaky debris, accounting for 93.53% of the total debris. (3) When the length or height of the rock slab is constant, the maximum tensile stress in the rock slab decreases nonlinearly with the increase of rock slab thickness. For the same size of the rock slab, the farther away from the roadway wall, the greater the maximum tensile stress in the rock slab. (4) When the thickness of the rock slab is constant, the maximum tensile stress in the rock slab increases nonlinearly with the increase of height to thickness ratio K. When the ratio of height to thickness K is constant, the maximum tensile stress in the rock slab increases with the increase of rock slab thickness h. (5) With the increase of covering depth, the critical failure thickness of the rock slab decreases nonlinearly and the surplus energy increases nonlinearly.http://dx.doi.org/10.1155/2024/6813580 |
| spellingShingle | Chaosheng Wang Hao Wan Jianjun Ma Xianglin Chen Acoustic Emission Characteristics and Initiation Mechanism of Instantaneous Rock Burst for Beishan Granite Shock and Vibration |
| title | Acoustic Emission Characteristics and Initiation Mechanism of Instantaneous Rock Burst for Beishan Granite |
| title_full | Acoustic Emission Characteristics and Initiation Mechanism of Instantaneous Rock Burst for Beishan Granite |
| title_fullStr | Acoustic Emission Characteristics and Initiation Mechanism of Instantaneous Rock Burst for Beishan Granite |
| title_full_unstemmed | Acoustic Emission Characteristics and Initiation Mechanism of Instantaneous Rock Burst for Beishan Granite |
| title_short | Acoustic Emission Characteristics and Initiation Mechanism of Instantaneous Rock Burst for Beishan Granite |
| title_sort | acoustic emission characteristics and initiation mechanism of instantaneous rock burst for beishan granite |
| url | http://dx.doi.org/10.1155/2024/6813580 |
| work_keys_str_mv | AT chaoshengwang acousticemissioncharacteristicsandinitiationmechanismofinstantaneousrockburstforbeishangranite AT haowan acousticemissioncharacteristicsandinitiationmechanismofinstantaneousrockburstforbeishangranite AT jianjunma acousticemissioncharacteristicsandinitiationmechanismofinstantaneousrockburstforbeishangranite AT xianglinchen acousticemissioncharacteristicsandinitiationmechanismofinstantaneousrockburstforbeishangranite |