Influence of Prediction Accuracy of Methane Emissions into Longwalls on the Conditions of Their Safe Exploitation
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.
mining safety coal mine longwall methane prediction
Eugeniusz KRAUSE Krzysztof CYBULSKI Qu XIANCHAO
Central Mining Institute Experimental Mine ”Barbara”,Katowice,Poland China Coal Research Institute Mine Safety Technology Research Institute,Beijing,China
国内会议
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
合肥
英文
229-235
2011-05-14（万方平台首次上网日期，不代表论文的发表时间）