Bibliographic citations
Díaz, J., Lucano, R. (2018). Mitigación de vibraciones mediante la simulación numérica directa (DNS), a campo lejano en una mina a tajo abierto - 2018 [Tesis, Universidad Privada del Norte]. https://hdl.handle.net/11537/13246
Díaz, J., Lucano, R. Mitigación de vibraciones mediante la simulación numérica directa (DNS), a campo lejano en una mina a tajo abierto - 2018 [Tesis]. PE: Universidad Privada del Norte; 2018. https://hdl.handle.net/11537/13246
@misc{renati/522715,
title = "Mitigación de vibraciones mediante la simulación numérica directa (DNS), a campo lejano en una mina a tajo abierto - 2018",
author = "Lucano Alvarado, Roger Sebastian",
publisher = "Universidad Privada del Norte",
year = "2018"
}
Currently in the mining industry in our country, rock blasting is the most used mass extraction technique and in turn is a way to generate vibrations; therefore, the knowledge of its origin, the phenomena associated with its transmission (Geometric Attenuation, Frictional Loss), the measurement of its fundamental magnitudes (Amplitude, Frequency, Speed of Particle, Acceleration), the techniques to mitigate them (Controlled Blasting) and the legislation that regulates them; they serve to control them, reduce them and make them imperceptible both for the operation and for the nearby areas that could be affected by them. In addition, the high degree of influence of the results of the blasting, in the processes of the operational cycle, makes evident the need to have the experience and technology to evaluate and subsequently optimize the unit operation. The proper use of the Monitoring of Vibrations produced by blasting, is a technique that provides multiple advantages in terms of being able to examine in detail the unit operation. In effect, the measurement of the levels of Peak Speed Particle (PPV), which causes the detonation of each explosive charge, is a means through which it is possible to know their relative efficiency, their interaction with adjacent charges and ultimately the performance general design In this sense, the present research developed in an ideal Mining Operation, focuses on the mitigation of the impact of vibrations by means of Direct Numerical Direct Field Simulation induced by a blast, through the optimization of the explosive charge (Quantex 70/30) , by delay using vibration monitoring data such as: operant load and dynamic characteristics or laws of ground attenuation; to then apply a linear regression between the Scalar Distance (Ds), and the Peak Particle Rate (PPV), which will give us as a result a reliable predictive model. As a result of the analysis of vibrations for the operational stage, the adjusted model for the estimation of vibrations obtained at the closest influence distance (cutoff limit with the community), recommended for the first test a Maximum Operational Load of 494 kg with a PPV prediction of 2.37 mm / s. In the second test located practically at the same distance the recommended load was 494 kg, with a PPV prediction of 2.06 mm / s. and finally in the last test carried out it was decided to load 460 kg of explosive with a PPV prediction of 2.04 mm / s As for the Dig Rate (Excavation Rate), of the model blade HIT 5500EX, 92%, 79% and 74% of positive results were obtained during the mining time correspondingly.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.