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espanolEl metano asociado al carbon es un gas que potencialmente genera riesgos de explosion en labores de mineria subterranea. Este gas es explosivo cuando se encuentra dentro de un rango del volumen entre 5% y 15%, por lo que es de gran importancia realizar monitoreos constantes de las concentraciones. El punto mas critico de la actividad minera es el arranque de carbon ya que es el momento donde se hace una mayor perturbacion de este ocasionando la liberacion del gas. Se realizaron mediciones de concentraciones de metano durante el arranque en minas a lo largo de la cuenca del Sinifana, a partir de las cuales se realizaron perfiles y correlaciones para determinar los factores mas influyentes para las acumulaciones de gas y por ende explosiones, ademas semuestran correlaciones entre factores como la ventilacion y las ubicaciones geograficas de las minas siendo las primeras las mas influyentes al presentarse concentraciones de un 30% mas altas en minas sin ventilacion. EnglishCoal-Bed Methane (CBM) has the risk to generate explosions when its volume is between 5% and 15%, so it is very important to perform a routine monitoring of its concentrations during mining activities. The most critical point of the coal mining is the digging because it is the moment when the perturbation of CBM occurs, causing its release. Were performed measurements of methane concentrations during the digging in mines along the Sinifana basin, from wich were performed profiles and correlations to determine the most influential factors for gas accumulations and explosions. Also, they were performed correlations between factors of ventilation and geographical locations of the mines, being the first the most influential it presenting concentrations of 30% higher in mines without ventilation.

Evaluación del riesgo de explosividad del gas metano en minería subterránea de carbón, caso de la cuenca del Sinifaná, Colombia