多属性分析技术在探测煤层冲刷带中的应用

Application of Multi-attribute Analysis Technique Dectecting Coal Seam Scouring Zone

煤层冲刷带的存在,一方面影响了矿井的总体生产规划,导致井下开采方案和开采方法都要因此而进行调整,降低了矿企的经济效益;另一方面,由于局部区域煤层厚度变薄甚至尖灭缺失还会导致地应力异常集中,存在瓦斯突出等安全隐患,对矿井的安全生产带来极大的影响。日常工作中,通过专业解释软件可以在时间域从各个角度对数据体进行分析,综合运用纵向时间剖面、横向水平切片以及沿煤层切片等可视化技术实现三维地震资料解释,运用方差体、相干体等技术对冲刷带进行了属性解释,确保了解释成果的正确可靠,为煤矿企业的安全高效生产起到了重要的指导作用。

On the one hand,the existence of coal seam scouring zone affects the overall production planning of the mine,leading to the adjustment of underground mining scheme and mining method,which reduces the economic benefits of mining enterprises.On the other hand,due to the thinning of coal seam thickness or even the absence of pinching in local areas,the abnormal concentration of in-situ stress and the existence of safety hazards such as gas outburst will bring great influence to the mine safety production.In 3D seismic exploration,the whole 3D interpretation is realized by combining longitudinal,transverse and arbitrary time section,combining time section with horizontal section and bedding section,etc.The attributes of scour zone are interpreted by variance volume and coherence volume techniques,which ensure the correctness and reliability of interpretation results,and play an important guiding role for the safe and efficient production of coal mine enterprises.