Influence of Prediction Accuracy of Methane Emissions into Longwalls on the Conditions of Their Safe Exploitation

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• 作者：Eugeniusz KRAUSEKrzysztof CYBULSKIQu XIANCHAO
• 会议时间：2011-05-14
• 关键词：mining ; safety ; coal mine ; longwall ; methane prediction
• 作者单位：Eugeniusz KRAUSE,Krzysztof CYBULSKI(Central Mining Institute Experimental Mine "Barbara",Katowice,Poland)Qu XIANCHAO(China Coal Research Institute Mine Safety Technology Research Institute,Beijing,China)
• 母体文献：中国工程科技论坛第118场——2011国际煤矿瓦斯治理及安全会议论文集
• 会议名称：中国工程科技论坛第118场——2011国际煤矿瓦斯治理及安全会议
• 会议地点：合肥
• 主办单位：中国工程院
• 语种：chi

摘要

The prediction of methane emissions into planned longwalls becomes more and more important in conditions of increasing output concentration and rising methane saturation of the deposit along with the exploitation depth.The calculated values of predictions of methane emissions at the life of face (in terms of distance) of planned longwalls have a bearing on the selection of an appropriate ventilation system and scope of applied prevention including methane drainage.The accuracy of calculated predictions of methane emissions constitutes the basic link at the stage of longwall planning.The divergences between the predicted and real methane emissions into longwalls during their exploitation have influence on the safety and economic aspects resulting from incorrect assessment of the methane hazard level at the planning stage.Appropriate planning of the longwall length has priority significance for safe exploitation conducting in strongly gassy seams.The article presents for variable longwall length (in variants) the method of calculation of initial quantities for the calculation of predictions,having a bearing on the accuracy of obtained results,and in consequence on the way of planning and conditions of safe exploitation.