Passive Seismic Imaging of Stress Evolution with Mining-Induced Seismicity at Hard-Rock Deep Mines

Ma, XuLuleå tekniska universitet,Geoteknologi,Department of Mining and Minerals Engineering, Virginia Tech, Blacksburg, VA, 24060, USA (författare)

Validerad;2020;Nivå 2;2020-06-15 (alebob)
This work aims to examine the stress redistribution with evolving seismicity rates using a passive seismic tomographic tool. We compiled a total of 26,000 events from two underground mines and partitioned them into multiple clusters in a temporal sequence, each of which contains 1000 events. To image stress redistribution associated with seismicity rates, we then run the tomographic studies using each cluster to yield seismic tomograms and computed the corresponding seismicity rate. We found that high velocity anomalies grew with the increase of seismicity rates, and they switched to a shrinking tendency under low seismicity rates. Results of this study imply that seismicity rates increase with increasing stress concentration and decrease with decreasing stress concentration. This study highlights the value of utilizing passive seismic tomography for estimating stress evolution associated with the change of seismicity rates at underground mines. Our findings illuminate the applications of using mining-induced seismicity to assess stress redistribution associated with seismicity rates at hard-rock mines, providing insights into seismic hazards for deep mining.

TEKNIK OCH TEKNOLOGIER Samhällsbyggnadsteknik Annan samhällsbyggnadsteknik hsv//swe
ENGINEERING AND TECHNOLOGY Civil Engineering Other Civil Engineering hsv//eng
Mining-induced seismicity
Seismicity rate
Seismic imaging
Stress evolution
Mining and Rock Engineering
Gruv- och berganläggningsteknik

Westman, ErikDepartment of Mining and Minerals Engineering, Virginia Tech, Blacksburg, VA, 24060, USA (författare)
Counter, DaveGlencore Canada Corporation, Timmins, ON, P4N 7K1, Canada (författare)
Malek, FaridCreighton Mine, Vale Canada Limited, Sudbury, ON, P0M 1N0, Canada (författare)
Slaker, BrentDepartment of Mining and Minerals Engineering, Virginia Tech, Blacksburg, VA, 24060, USA (författare)
Luleå tekniska universitetGeoteknologi (creator_code:org_t)

Ingår i:Rock Mechanics and Rock Engineering: Springer53:6, s. 2789-28040723-26321434-453X

Av författaren/redakt...: Ma, Xu; Westman, Erik; Counter, Dave; Malek, Farid; Slaker, Brent

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Samhällsbyggnads ...; och Annan samhällsby ...

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.