The performant estimate system of safety supporting the frontal coal face through the mining pressure monitoring to the coal exploitation using undermined coal bed

摘要

In nowadays coal exploitation conditions from Jiu Valley coal undergrounds taking into account the safetyrnrequests for adequate support and for assuring the stability for coal face due to extending the coal fields necessary tornbe uncover and undermined to coal bed method impose to forecast the manifestation and estimation intensity mode ofrnmining pressure system is considered more important for knowing the actual situation and to apply the imposedrnmeasurements.rnThe evaluation system which is presented in the paper suppose the pressure from hydraulic pillars using individualrntimber monitoring from undermined coal bed is necessary for estimate the exploitation safety.