彬长矿区小庄矿井煤厚解释方法研究及应用
Research and Application of Coal Seam Thickness Prediction in Xiaozhuang Mine of Binchang Mine Area
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摘要: 彬长矿区小庄矿井侏罗系延安组煤层属于巨厚煤层，在全区广泛分布。井田内古隆起发育，地层厚度、产状、煤层厚度及起伏形态受古地形控制，古隆起区附近煤层变薄、缺失，煤厚解释难度较大，凹陷区煤层厚度相对较厚，分布较稳定。通过地震正演模拟研究煤层厚度变化所引起的煤层波组特征变化的规律，结合钻孔资料，总结区内煤层厚度变化与其赋存深度的相关关系，采用煤层赋存规律和煤层反射波波组特征相结合的方法，解释了区内煤厚变化趋势，结果与地质规律相吻合。Abstract: Xiaozhuang Mine Jurassic Yan'an formation coal seam belongs to thick coal seam in Binchang Mining Area, and widely distributed in the region.In the mine field, paleo uplift development, formation thickness, shape and thickness of coal seam and the topography affected by the structure; in local area, the coal seam is pinch, thin, erosion, loss. Interpretation of the coal thickness is difficult. The thickness of the depressed area is relatively thick and the distribution is stable. Rules based on seismic forward simulation of coal seam thickness change caused by coal wave group characteristics change, combined with drilling, we summarize the correlation that area coal seam thickness change with its occurrence depth, and use coal seam hosting pattern and reflected wave group characteristics of the combination method to explain the coal change trend, which is consistent with the result of geological rules.
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