突变级数法在邹庄煤矿突出危险性评价中的应用

On the Application of Mutation Level Method in the Evaluation of Outburst Risk of Zouzhuang Coal Mine

为提高煤矿煤与瓦斯突出(以下简称突出)危险程度评价的准确性,提出一种以突变级数法与组合赋权法相结合的突出危险性评价方法.在基于地应力、煤层瓦斯压力和煤体结构物理性质综合影响因素分析基础上,建立邹庄矿井主采的32,7_(2)和8_(2) 煤层的突出危险性评价指标体系,相继对各煤层的突出危险性进行评价.其评价结果表明:32煤层属于中度危险煤层,7_(2)和8_(2) 煤层属于重度危险煤层,其评价结果与矿井各煤层突出危险性鉴定结果相一致,证实利用该方法评价煤矿矿井突出危险性是合理可行的.

In order to improve the accuracy of evaluating the risk degree of coal and gas outburst(hereinafter referred to as“outburst”)in coal mines,an outburst risk evaluation method that combines the mutation series method with the combined weighting method is proposed.Based on the analysis of the comprehensive influencing factors of coal structure and physical properties,the outburst risk evaluation index system of the main mining 32,7_(2) and 8_(2) coal seams in Zouzhuang Mine is established,and the outburst risk of each coal seam is evaluated successively,32 coal seams are moderately dangerous coal seams,and 7_(2) and 8_(2) coal seams are severely dangerous coal seams.The evaluation results are consistent with the identification results of the outburst risk of each coal seam in the mine,confirming that it is reasonable and feasible to use this method to evaluate the coal mine outburst risk.