An improved multidirectional velocity model for micro-seismic monitoring in rock engineering
An improved multidirectional velocity model was proposed for more accurately locating micro-seismic events in rock engineering. It was assumed that the stress wave propagation velocities from a micro-seismic source to three nearest monitoring sensors in a sensor’s array arrangement were the same. Si...
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| Published in | Journal of Central South University Vol. 22; no. 6; pp. 2348 - 2358 |
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| Main Authors | , , , , |
| Format | Journal Article |
| Language | English |
| Published |
Changsha
Central South University
01.06.2015
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| Subjects | |
| Online Access | Get full text |
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| Abstract | An improved multidirectional velocity model was proposed for more accurately locating micro-seismic events in rock engineering. It was assumed that the stress wave propagation velocities from a micro-seismic source to three nearest monitoring sensors in a sensor’s array arrangement were the same. Since the defined objective function does not require pre-measurement of the stress wave propagation velocity in the field, errors from the velocity measurement can be avoided in comparison to three traditional velocity models. By analyzing 24 different cases, the proposed multidirectional velocity model iterated by the Simplex method is found to be the best option no matter the source is within the region of the sensor’s array or not. The proposed model and the adopted iterative algorithm are verified by field data and it is concluded that it can significantly reduce the error of the estimated source location. |
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| AbstractList | An improved multidirectional velocity model was proposed for more accurately locating micro-seismic events in rock engineering. It was assumed that the stress wave propagation velocities from a micro-seismic source to three nearest monitoring sensors in a sensor’s array arrangement were the same. Since the defined objective function does not require pre-measurement of the stress wave propagation velocity in the field, errors from the velocity measurement can be avoided in comparison to three traditional velocity models. By analyzing 24 different cases, the proposed multidirectional velocity model iterated by the Simplex method is found to be the best option no matter the source is within the region of the sensor’s array or not. The proposed model and the adopted iterative algorithm are verified by field data and it is concluded that it can significantly reduce the error of the estimated source location. |
| Author | Wu, Shun-chuan Zhou, Yu Gao, Yong-tao Li, Jian Li, Li-jie |
| Author_xml | – sequence: 1 givenname: Jian surname: Li fullname: Li, Jian organization: Key Laboratory of Efficient Mining and Safety of Metal Mine of Ministry of Education, University of Science and Technology Beijing, School of Civil and Resource Engineering, University of Western Australia – sequence: 2 givenname: Shun-chuan surname: Wu fullname: Wu, Shun-chuan email: wushunchuan@ustb.edu.cn organization: Key Laboratory of Efficient Mining and Safety of Metal Mine of Ministry of Education, University of Science and Technology Beijing – sequence: 3 givenname: Yong-tao surname: Gao fullname: Gao, Yong-tao organization: Key Laboratory of Efficient Mining and Safety of Metal Mine of Ministry of Education, University of Science and Technology Beijing – sequence: 4 givenname: Li-jie surname: Li fullname: Li, Li-jie organization: State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University – sequence: 5 givenname: Yu surname: Zhou fullname: Zhou, Yu organization: Key Laboratory of Efficient Mining and Safety of Metal Mine of Ministry of Education, University of Science and Technology Beijing |
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| Cites_doi | 10.2118/9509-PA 10.1137/0705041 10.1785/BSSA0780020799 10.1785/BSSA0890041143 10.1007/s11771-013-1829-8 10.1093/comjnl/7.4.308 10.1201/9780203971109 10.1007/s11771-013-1478-y 10.1785/0120000006 10.1785/BSSA0660010173 10.1166/sl.2011.1540 10.1785/BSSA0750030779 10.1016/j.ijrmms.2007.08.009 10.1007/s00603-013-0432-5 10.1016/0031-9201(82)90096-6 |
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| Keywords | micro-seismic event rock engineering; field measurement error estimation multidirectional velocity model Simplex method |
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speed [J]Sensor Letters2011952025202910.1166/sl.2011.1540 – reference: DONGL-jLIX-bTANGL-zGONGF-qiangMathematical functions and parameters for microseismic source location without premeasuring speed [J]Chinese Journal of Rock Mechanics and Engineering2011301020572067 – reference: GEIGERLProbability method for the determination of earthquake epicenters from the arrival time only (translated from Geiger’s 1910 German article) [J]Bulletin of St. Louis University1912815671 – reference: TAYLORH LThe L1 norm in seismic data processing [M] Developments in Geophysical Exploration MethodsNetherlands: Springer19815376 – reference: ALBRIGHTJ NPEARSONC FAcoustic emissions as a tool for hydraulic fracture location: Experience at the Fenton Hill Hot Dry Rock site [J]Society of Petroleum Engineers Journal198222452353010.2118/9509-PA – reference: INGLADAVThe calculation of the stove coordinates of a Nahbebens [J]Gerlands Beitrage zur Geophysik1928197398 – reference: BULANDRThe mechanics of locating earthquakes [J]Bulletin of the Seismological Society of America1976661173187 – reference: PAVLISG LBOOKERJ RThe mixed discrete-continuous inverse problem: Application to the simultaneous determination of earthquake hypocenters and velocity structure [J]198085948014810 – reference: PRUGGERA FGENDZWILLD JMicroearthquake location: A nonlinear approach that makes use of a simplex stepping procedure [J]Bulletin of the Seismological Society of America1988782799815 – reference: XUN-wDAIFLIANGZ-zZHOUZSHACTANGC-anThe dynamic evaluation of rock slope stability considering the effects of microseismic damage [J]Rock Mechanics and Rock Engineering201447262164210.1007/s00603-013-0432-5 – reference: WANGH-qXIAH-eCHENGY-qWANGL-luAn adaptive waveform-detection threshold joint optimization method for target tracking [J]Journal of Central South University201320113057306410.1007/s11771-013-1829-8 – reference: WALDHAUSERFELLSWORTHW LA double-difference earthquake location algorithm: Method and application 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