矿井巷道地震反射波超前探测波场处理方法研究
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摘要
掘进工作面突水、煤与瓦斯突出等事故频发迫切需要精细超前地球物理探测技术,反射地震波法是地质构造超前探测预报的重要手段,而波场分离、偏移成像是反射波地震超前探测的关键处理技术。对比分析运动学、动力学波场分离及偏移成像技术,提出了一种巷道全空间条件下的反射波动态极化偏移成像方法;实际巷道超前探测对比试验表明,极化偏移成像具有消除对称异常假象、提高空间分辨率的效果。
Advanced detection technology was urgently needed because of the frequent happenings of driving working face water inrush,coal and gas outburst accident,etc. The reflection seismic method was an important means of geological structure prediction in mining geology advanced detection. The wave field separation and migration imaging was the key of reflection seismic advanced detection technology. The conventional kinematics and dynamic wave field separation and migration imaging method being contrastively analyzed,the dynamic polarization migration imaging method under the condition of full space had been proposed. The contrast test of advanced detection in rock gangway showed that polarization migration imaging method had its advantages on eliminating symmetrical abnormal appearance and improving the spatial resolution.
引文
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