煤层突出敏感指标的间接确定方法

Method for indirect determination of sensitive index of coal seam outburst

为快速、准确确定采掘工作面煤层突出敏感指标,综合分析钻屑量S、钻孔瓦斯涌出初速度q、钻屑解吸值Δh2等突出指标对采掘工作面瓦斯含量W的关联性,建立了灰色关联数学模型,采用数学软件MATLAB R2009a编程,实现了突出指标敏感度的快速排序,提出了突出敏感指标的间接确定方法。该方法便于动态掌控采掘工作面突出敏感指标,及时调整区域验证或预测预报敏感指标,有效预测突出危险性,适用于瓦斯赋存差异性较大的煤与瓦斯突出矿井采掘工作面突出敏感指标判定。

To rapidly and accurately determine the mining and excavation working face of coal seam outburst sensitive index, comprehen- sive analysis drilling cuttings weight S, drilling gas inrush initial velocity q, drilling cuttings desorption value Ah2 and other prominent indicators and mining working surface gas content W, correlation between them, grey relational mathematical model was established, u- sing MATLAB R2009a programming,quick sort of outburst sensitivity indexes were realized,an indirect method to determine the index of outburst sensitivity was also proposed. The indirect determination method is convenient for the dynamic control of the sensitive index of mining and excavation working face, and the timely adjustment of the regional validation index, which can effectively predict the out- burst danger. This method is suitable for the determination of the index of outburs＇t sensitivity on driving face in coal mine with different gas occurrences.