Stability Evaluation on Surrounding Rocks of Underground Powerhouse Based on Microseismic Monitoring
To study the stability of underground powerhouse at Houziyan hydropower station during excavation, a microseismic monitoring system is adopted. Based on the space-time distribution characteristics of microseismic events during excavation of the main powerhouse, the correlation between microseismic e...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2015/937181 |
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| author | Feng Dai Biao Li Nuwen Xu Yongguo Zhu Peiwei Xiao |
| author_facet | Feng Dai Biao Li Nuwen Xu Yongguo Zhu Peiwei Xiao |
| author_sort | Feng Dai |
| collection | DOAJ |
| description | To study the stability of underground powerhouse at Houziyan hydropower station during excavation, a microseismic monitoring system is adopted. Based on the space-time distribution characteristics of microseismic events during excavation of the main powerhouse, the correlation between microseismic events and blasting construction is established; and the microseismic clustering areas of the underground powerhouse are identified and delineated. The FLAC3D code is used to simulate the deformation of main powerhouse. The simulated deformation characteristics are consistent with that recorded by microseismic monitoring. Finally, the correlation between the macroscopic deformation of surrounding rock mass and microseismic activities is also revealed. The results show that multiple faults between 1# and 3# bus tunnels are activated during excavation of floors V and VI of the main powerhouse. The comprehensive method combining microseismic monitoring with numerical simulation as well as routine monitoring can provide an effective way to evaluate the surrounding rock mass stability of underground caverns. |
| format | Article |
| id | doaj-art-016fd3de9f7b44ecb22897e9a0d141c3 |
| 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-016fd3de9f7b44ecb22897e9a0d141c32025-02-03T01:20:25ZengWileyShock and Vibration1070-96221875-92032015-01-01201510.1155/2015/937181937181Stability Evaluation on Surrounding Rocks of Underground Powerhouse Based on Microseismic MonitoringFeng Dai0Biao Li1Nuwen Xu2Yongguo Zhu3Peiwei Xiao4State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, ChinaState Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, ChinaState Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, ChinaChina Guodian Dadu River Houziyan Hydropower Development Co., Ltd., Kangding 626005, ChinaChina Guodian Dadu River Houziyan Hydropower Development Co., Ltd., Kangding 626005, ChinaTo study the stability of underground powerhouse at Houziyan hydropower station during excavation, a microseismic monitoring system is adopted. Based on the space-time distribution characteristics of microseismic events during excavation of the main powerhouse, the correlation between microseismic events and blasting construction is established; and the microseismic clustering areas of the underground powerhouse are identified and delineated. The FLAC3D code is used to simulate the deformation of main powerhouse. The simulated deformation characteristics are consistent with that recorded by microseismic monitoring. Finally, the correlation between the macroscopic deformation of surrounding rock mass and microseismic activities is also revealed. The results show that multiple faults between 1# and 3# bus tunnels are activated during excavation of floors V and VI of the main powerhouse. The comprehensive method combining microseismic monitoring with numerical simulation as well as routine monitoring can provide an effective way to evaluate the surrounding rock mass stability of underground caverns.http://dx.doi.org/10.1155/2015/937181 |
| spellingShingle | Feng Dai Biao Li Nuwen Xu Yongguo Zhu Peiwei Xiao Stability Evaluation on Surrounding Rocks of Underground Powerhouse Based on Microseismic Monitoring Shock and Vibration |
| title | Stability Evaluation on Surrounding Rocks of Underground Powerhouse Based on Microseismic Monitoring |
| title_full | Stability Evaluation on Surrounding Rocks of Underground Powerhouse Based on Microseismic Monitoring |
| title_fullStr | Stability Evaluation on Surrounding Rocks of Underground Powerhouse Based on Microseismic Monitoring |
| title_full_unstemmed | Stability Evaluation on Surrounding Rocks of Underground Powerhouse Based on Microseismic Monitoring |
| title_short | Stability Evaluation on Surrounding Rocks of Underground Powerhouse Based on Microseismic Monitoring |
| title_sort | stability evaluation on surrounding rocks of underground powerhouse based on microseismic monitoring |
| url | http://dx.doi.org/10.1155/2015/937181 |
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