Resumo

NAVARRO TORRES, Vidal Felix. Assessment of environmental damage caused by blast vibrations - case study on Portugal's Marão tunnel. REV. MAMYM [online]. 2025, vol.10, n.1, pp.32-44. ISSN 2519-5352.

Abstract This paper deals with an innovative assessment approach of environmental damage and effects on nearby communities caused by blast vibrations generated during tunnel excavation. Moreover, a mathematical model that evaluates particle vibrations at a specific point of interest located at a certain distance from the source on the basis of the depth of detonation, tunnel axis position, explosive charge and the number of holes blasted per delay is presented. Anew proposal is presented for the assessment of damage levels. A case study in a populated area surrounding the portal of Portugal's Marão tunnel is conducted. The case study presents vibration data recorded during the detonation of explosive charges around land occupied by humans. Data processing was performed using the multiple linear regression method to obtain the propagation law of vibrations for the area under study, and damage assessment was performed based on Portuguese standard NP 2074 and international standard ISO 2631 for human comfort.

Palavras-chave : Blasting; tunnel; environment; blast damage; human comfort.

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