Evaluating the Effect of the Initiation Method on Blasting by Seismographic Monitoring and Image Analysis

Abstract

Mineral Resources EngineeringVol. 09, No. 04, pp. 429-436 (2000) No AccessEVALUATING THE EFFECT OF THE INITIATION METHOD ON BLASTING BY SEISMOGRAPHIC MONITORING AND IMAGE ANALYSISJORGE LUIS BROWN SEGUI, JAIR CARLOS KOPPE, and JOÃO FELIPE COIMBRA LEITE COSTAJORGE LUIS BROWN SEGUIMining Engineering Department, Federal University of Rio Grande do Sul, Av. Osvaldo Aranha 99/504, 90.035-190 Porto Alegre, Rio Grande do Sul, Brazil Search for more papers by this author , JAIR CARLOS KOPPEMining Engineering Department, Federal University of Rio Grande do Sul, Av. Osvaldo Aranha 99/504, 90.035-190 Porto Alegre, Rio Grande do Sul, Brazil Search for more papers by this author , and JOÃO FELIPE COIMBRA LEITE COSTAMining Engineering Department, Federal University of Rio Grande do Sul, Av. Osvaldo Aranha 99/504, 90.035-190 Porto Alegre, Rio Grande do Sul, Brazil Search for more papers by this author https://doi.org/10.1142/S0950609800000366Cited by:0 PreviousNext AboutSectionsPDF/EPUB ToolsAdd to favoritesDownload CitationsTrack CitationsRecommend to Library ShareShare onFacebookTwitterLinked InRedditEmail AbstractExplosives performance depend on how the chemical energy available in the explosive mass is released and consequently, transferred to the rock mass. The initiation method is one of the uttermost importance in this process. This paper analyses the influence of two distinct methods of initiation, i.e. top side and point initiation in the blasting results. Ammonium nitrate and fuel oil (ANFO) detonation is highly sensitive to the way it is initiated. As ANFO is the most common explosive in open pit mining, it was chosen for comparing the initiation methods. Different blasts were monitored using a triaxial electronic seismograph. Image analysis complements the monitoring program, providing the information to compare different shots. A case study illustrates the methodology used for data acquisition. Experimental results proved the superior efficiency of point initiation and showed a reliable method of evaluate explosive performance. FiguresReferencesRelatedDetails Recommended Vol. 09, No. 04 Metrics History PDF download