基于层次分析法的煤与瓦斯突出预测研究

Research on prediction of coal and gas outburst based on analytic hierarchy process

为了对煤与瓦斯突出进行预测,采用层次分析法研究了煤与瓦斯突出预测方法,分析了煤与瓦斯突出因素,对煤与瓦斯突出瓦斯压力和瓦斯含量临界值进行了确定。建立了煤与瓦斯突出的相关指标的层次分析模型。研究得出,某矿5号煤层的煤层瓦斯压力指标临界值为0.68 MPa,5号煤层瓦斯含量指标临界值为10.8 m^3/t;影响煤与瓦斯突出的指标依次为煤的破坏类型和坚固性系数、顶板强度和厚度、煤层厚度、瓦斯压力、地质构造、瓦斯含量和埋深。研究为类似条件下煤与瓦斯突出预测提供了技术支持。

In order to predict coal and gas outburst,the method of coal and gas outburst prediction was studied by analytic hierarchy process.The coal and gas outburst factors were analyzed,and the gas and gas outburst gas pressure and gas content threshold were determined.A hierarchical analysis model of related indicators of coal and gas outburst was established.The study showed that the critical value of coal seam gas pressure index of No.5 coal seam in a mine is 0.68 MPa,and the critical value of gas content index of No.5 coal seam is 10.8 m^3/t;the indexes affecting coal and gas outburst are the type of coal damage and sturdiness,property coefficient,roof strength and thickness,coal seam thickness,gas pressure,geological structure,gas content and buried depth.The study has provided technical support for coal and gas outburst prediction under similar conditions.