Asymmetric propagation of airblast from bench blasting

Segarra Catasús, Pablo; Sanchidrián Blanco, José Angel; López Sánchez, Lina María y Domingo, Jesús Felix (2011). Asymmetric propagation of airblast from bench blasting. En: "Sixth EFEE World Conference on Explosives and Blasting", 18/09/2011 - 20/09/2011, Lisboa, Portugal. pp. 79-90.

Descripción

Título: Asymmetric propagation of airblast from bench blasting
Autor/es:
  • Segarra Catasús, Pablo
  • Sanchidrián Blanco, José Angel
  • López Sánchez, Lina María
  • Domingo, Jesús Felix
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: Sixth EFEE World Conference on Explosives and Blasting
Fechas del Evento: 18/09/2011 - 20/09/2011
Lugar del Evento: Lisboa, Portugal
Título del Libro: Proceedings of Sixth EFEE World Conference on Explosives and Blasting
Fecha: 2011
Materias:
Escuela: E.T.S.I. Minas (UPM) [antigua denominación]
Departamento: Ingeniería Química y Combustibles [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

This paper investigates the propagation of airblast from quarry blasting. Peak overpressure is calculated as a function of blasting parameters (explosive mass per delay and velocity at which the detonation sequence proceeds along the bench) and polar coordinates of the point of interest (distance to the blast and azimuth with respect to the free face of the blast). The model is in the form of the product of a classical scaled distance attenuation law times a directional correction factor. The latter considers the influence of the bench face, and attenuates overpressure at the top level and amplifies it at the bottom. Such factor also accounts for the effect of the delay by amplifying the pressure in the direction of the initiation sequence if the velocity of initiation exceeds half the speed of sound and up to an initiation velocity in the range of the speed of sound. The model has been fitted to an empirical data set composed by 134 airblast records monitored in 47 blasts at two quarries. The measurements were made at distances to the blast less than 450 m. The model is statistically significant and has a determination coefficient of 0.869

Más información

ID de Registro: 13231
Identificador DC: http://oa.upm.es/13231/
Identificador OAI: oai:oa.upm.es:13231
Depositado por: Memoria Investigacion
Depositado el: 29 Oct 2012 12:48
Ultima Modificación: 21 Abr 2016 12:32
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