槽波地震勘探技术在瓦斯富集区探测中的应用研究

为查清糯东煤矿11705工作面内部煤厚变化,并圈出工作面瓦斯治理高风险区域,为工作面安全高效生产提供指导,采用槽波地震透射法对11705工作面进行探测。联合槽波速度解释与能量解释两种方法,辨析透射槽波的质量,将质量差的槽波射线分别绘制在平面图上,采用射线交汇的方法划分工作面的开采风险分布区域。探测成果与实验室中解吸法的瓦斯测定成果进行了对比,结果表明,煤与瓦斯突出矿井槽波速度与瓦斯富集区存在一定相关性,在槽波高速区、波速急剧变化带或高低速相间分布区,瓦斯含量可能较高;被四周高速区所包围的低速区域瓦斯含量较高。上述结论为国内同类型矿井瓦斯富集区探测提供了借鉴。

Application research on slot wave seismic exploration technology in gas enriched area detection

To find out the changes in coal thickness inside the 11705 working face of Nuodong Coal Mine,and to circle the high-risk area of gas control on working face,so as to provide guidance for safe and efficient production of working face,the 11705 working surface was detected by the slot wave seismic transmission method.Two methods,velocity interpretation and energy interpretation,were combined,the quality of transmission groove wave was analyzed,the groove wave rays with poor quality were respectively drawn on the plan,and the method of ray intersection was used to divide the mining risk distribution area of the working face.The detection results were compared with the laboratory analytical gas measurement results.The results showed that there is a certain correlation between the wave velocity of coal and gas outburst and the gas enrichment zone.The gas content may be higher in the zone of high-speed region of the wave wave,the sharp change of the wave velocity or the high-low velocity interphase distribution zone,the gas content in the low speed area surrounded by the surrounding high speed area is high.All this can provide a reference for the detection of the same type of mine gas enrichment area in China.