Spatio-temporal assessments of rockburst hazard combining b values and seismic tomography

Li, J.; Gong, S.-Y.; He, J.; Cai, W.; Zhu, G.-A.; Wang, Ch.-B.; Chen, T.

doi:10.1007/s11600-017-0008-y

Artykuł - szczegóły

Tytuł artykułu

Spatio-temporal assessments of rockburst hazard combining b values and seismic tomography

Autorzy

Li J. , Gong S.-Y. , He J. , Cai W. , Zhu G.-A. , Wang Ch.-B. , Chen T.

Wybrane pełne teksty z tego czasopisma

https://www.springer.com/journal/11600

Identyfikatory

DOI

10.1007/s11600-017-0008-y

Warianty tytułu

Języki publikacji

Abstrakty

A better understanding of rockburst precursors and high stress distribution characteristics can allow for higher extraction efficiency with reduced safety concerns. Taking the rockburst that occurred on 30 January 2015 in the Sanhejian Coal Mine, Jiangsu Province, China, as an example, the mechanism of rockburst development in a roadway was analysed, and a combined method involving b values and seismic velocity tomography was used to assess the rockburst in both time and space, respectively. The results indicate that before the rockburst, b values dropped significantly from 0.829 to 0.373. Moreover, a good agreement between a significant decrease in b values and the increase of the number of strong tremors was found. Using seismic tomography, two rockburst risk areas were determined where the maximum velocity, maximum velocity anomaly and maximum velocity gradient anomaly were 6 km/s, 0.14 and 0.13, respectively. The high-velocity regions corresponded well with the rockburst zone and large seismic event distributions. The combination of b values and seismic tomography is proven to have been a promising tool for use in evaluating rockburst risk during underground coal mining.

Słowa kluczowe

coal mining rockburst seismic tomography strong tremors

górnictwo węglowe tąpania tomografia sejsmiczna silny wstrząs podziemny

Wydawca

Instytut Geofizyki PAN
Springer

Czasopismo

Acta Geophysica

Rocznik

2017

Tom

Vol. 65, no. 1

Strony

77--88

Opis fizyczny

Bibliogr. 32 poz.

Twórcy

autor

Li J.

lijingxchne@gmail.com

Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou, China

autor

Gong S.-Y.

Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou, China

autor

He J.

Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou, China

autor

Cai W.

Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou, China

autor

Zhu G.-A.

Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou, China

autor

Wang Ch.-B.

Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou, China

autor

Chen T.

Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines, China University of Mining and Technology, Xuzhou, China

Bibliografia

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Typ dokumentu

Bibliografia

Identyfikator YADDA

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