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Investigations on Impact of Blasting in Tunnels

Author

Listed:
  • Kaushik Dey

    (Indian School of Mines, India)

  • V. M. S. R. Murthy

    (Indian School of Mines, India)

Abstract

Blasting with longer advance per round leaves an impact both visible (in the form of overbreak) and invisible (cracks) in the surrounding rockmass, however, a number of controlled-blasting techniques, that is line drilling, pre-splitting, and smooth blasting, have been developed to minimise this problem. These techniques require additional drilling, controlled charging, and detonation, and thus, are not preferred in regular development activities. Investigations have been carried out in five different horizontal development drivages of metal mines to assess the blasting impact using burn cut and arrive at the blast-induced rock damage (BIRD) model. Vibration monitoring close to the blast was carried out using accelerometers for the first time in India to develop vibration predictors and overbreak threshold levels for individual sites. This paper reports the development of the overbreak predictive model (BIRD) for burn cut blasting in hard rock drivages by combining the relevant rock, blast design, and explosive parameters. A multivariate statistical model has been developed and validated and the same can find ready application in tunnels and mines for exercising suitable engineering controls both in blast design and explosive selection for reduced basting impacts.

Suggested Citation

  • Kaushik Dey & V. M. S. R. Murthy, 2010. "Investigations on Impact of Blasting in Tunnels," International Journal of Geotechnical Earthquake Engineering (IJGEE), IGI Global, vol. 1(2), pages 59-71, July.
    • Handle: RePEc:igg:jgee00:v:1:y:2010:i:2:p:59-71
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    Cited by:

    1. Juan José García Ochoa & Juan de Dios León Lara & José Pablo Nuño de la Parra, 2017. "Propuesta de un modelo de medición de la competitividad mediante análisis factorial," Contaduría y Administración, Accounting and Management, vol. 62(3), pages 775-791, Julio-Sep.
    2. Owen, David & Hogarth, Terence & Green, Anne E., 2012. "Skills, transport and economic development: evidence from a rural area in England," Journal of Transport Geography, Elsevier, vol. 21(C), pages 80-92.
    3. Berta Ermila Madrigal Torres & Ricardo Gabriel Luna Ruiz & José Guadalupe Vargas Hernández, 2017. "Liderazgo multicultural: estudio comparativo India-México," Revista Facultad de Ciencias Económicas, Universidad Militar Nueva Granada, vol. 25(2), pages 123-137, September.
    4. Woxenius, Johan & Bergqvist, Rickard, 2011. "Comparing maritime containers and semi-trailers in the context of hinterland transport by rail," Journal of Transport Geography, Elsevier, vol. 19(4), pages 680-688.

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