单一突出煤层分叉段保护层开采技术研究

Study on protective seam mining technology of single outburst coal seam with forked section

为了保证27012工作面区域瓦斯治理效果,优化区域防突措施实施方法,结合所在煤层为单一突出煤层且存在分叉煤的特点以及周边已采巷道和已探明围岩条件资料,依据保护层设计相关理论,确定工作面沿倾向、沿走向保护范围和最大垂距,并对工作面设计进行调整。现场应用该技术后,区域防突措施效果检验达标,实现工作面安全生产。

In order to ensure the effect of gas control in the area of 27012 working face and optimize the implementation method of outburst prevention measures in the area,taking into account the characteristics of the coal seam in which the coal seam is a single outburst coal seam with bifurcated coal and the data of the surrounding mined roadway and the condition of the proved surrounding rock,according to the theory of protective layer design,the protective range and the maximum vertical distance along the dip and strike of the working face are determined,and the design of the working face is adjusted.After field application of this technology,the effect test of regional outburst prevention measures reaches the standard,and the safe production of working face is realized.