NUNES, B. A.; http://lattes.cnpq.br/6395037634411411; NUNES, Barthira Almeida.
Resumo:
Rock dismantling is an essential activity for carrying out earthworks, it contributes to
economic development and is essential for mining and civil construction activities.
However, this practice is not free from neighborhood impacts such as noise pollution
and ground vibration. In this context, the present research was carried out with the aim
of analyzing the impacts of neighborhood and application of technology in rock
dismantling in an urban area of Campina Grande-PB. Monitoring was carried out
throughout the dismantling process in three (3) works, characterizing each project,
identifying the techniques, quantity of explosive and material removed from the
dismantling, use of seismographs to analyze vibration and noise inserted at strategic
points. To reduce impacts such as vibration, ultralaunches and atmospheric
overpressure, the implementation of the T-REX detonator as an initiator and the
ground cover to muffle the detonation were analyzed in this research. After identifying
all stages of the dismantling process, a neighborhood impact matrix was constructed.
The volume dismantled in Work A1, A2 and A3 was 857.31 m³, 3,735.58 m³ and
2,918.29 m³, respectively. Around 62% of its detonation phase indicators are
considered to have a high negative impact. While drilling accounts for 19% of these
indicators, they are being raised. The high neighborhood impact occurs in the
detonation phase, which was observed in the matrix analysis, but around 42% of total
interactions were non-significant, due to the use of sustainable technologies applied in
this research, achieving the Sustainable Development Goals.
