Guidelines for mining and quarry blasting urban areas Brazilian regulation NBR 9653 under current reviewed.
Guidelines for mining and quarry blasting urban areas Brazilian regulation NBR 9653 under current reviewed.
Author(s): BACCI, D. de La C.
Summary: The Brazilian Regulation NBR 9653 is a guide intended to evaluate mine and quarry blasting effects in urban areas. The first version, written in 1986 by the Committee of the Brazilian Associate of Technical Norms, is currently being revised. Cmrent regulations specify a maximmn PPV limit of 15 mmls (0.59 in/s) without consideration of frequency or type of structures being protected. The present regulation is still a draft and it is not validated. Several different agencies and institutions have participated in the Committee such as the Environrnental Agency from the State of São Paulo (CETESB), University of São Paulo (pOLI-USP), University of Rio Grande do Sul (UFRGS), ational Department of Mineral Resources (DNPM), Aggregate Industry (ANEPAC and SINDIPEDRAS), besides a number of industry representatives, explosives manufactures and independent consultants. The present regulation proposes to modify the lirnits of partiele velocity and introduces new definitions and criteria for evaluation of vibrations, as well recommendations to address blast vibration complaints.
Publication year: 2005
Types of publication: Paper in annals and proceedings
Unit: Embrapa Territorial
Keywords: Extrativismo mineral, Impacto Ambiental, NBR 9653, Regulamentação
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