Research On Safety Evaluation Of Fully Mechanized Longwall Mining In Pitched Seam

With the increasing intensity of coal mining, the reserve of most mining area with simplegeologic conditions of shallow coalseam is close to depletion. Therefore, the pitched seaminto the people's vision. Gentle slope and near the level of coal seam comparison, thehigh-pitched seam Workface system security, reliability and low complexity of productionsystems. Inclined fully mechanized mining face the complexity of production systems,determine its safety evaluation is a complex systematic project, so to build an accurate,reasonable and effective high-pitched seam Longwall safety evaluation index system isessential.This paper to determine the high-pitched seam Longwall safety evaluation index systemfor the purpose of the use of people-oriented man-machine combination of four factors EMSsystem analysis method, in order to fully mechanized coal face of the personnel, machineryand equipment, environment and management as object of study, pairs of fully mechanizedcoal face production systems that exist in identification and analysis of risk factors, the use ofanalytic hierarchy process, fuzzy evaluation methods such as the human, machine andenvironment, management, optimization of matching elements such as the establishment of areasonable and effective big dip Longwall coal mining safety evaluation index system. Safetyevaluation index system consists of four-level indicators, 14 indicators and 46 secondary threeindicators.Evaluation index system for achieving usability, operability of the indicators of,On-site applications, this safety evaluation index system is used in working face 25112of adit 2130 of Xinjiang Coal Group, Ltd.and working face 44407 in Wangjiashan Mine ofJingyuan Coal Industry Co, Ltd. Through calculations, the result of 25112 working face safetylevels obtains 80.01 points and 44407 working face safety levels achieves 78.659 points,this consequence shows that the safety levels of this two workplace reached"good".Based on theevaluation conclusion, proposed measures for improvement.