三维地震勘探综合解释技术在探测3煤层中的应用

七五煤矿是枣庄矿业集团旗下主要生产煤矿,地质条件比较复杂,不仅断层较发育,而且主采3煤层存在冲刷、沉缺、采空区和岩浆岩侵入等地质现象,对下一步巷道及工作面布置造成很大影响,北七采区为七五煤矿接续采区,急需查明区内地质构造及煤层赋存状况,通过采用常规地震时间剖面及地震属性综合解释技术,结合钻探资料查明了区内3煤层上述地质现象的赋存边界,后期巷道揭露与三维地震解释结果吻合度较好,取得了较好的应用效果。

Application of 3D Seismic Exploration Comprehensive Interpretation Technology in Detecting No.3 Coal Layers

Qiwu coal mine is the main production coal mine of Zaozhuang mining group. Its geological conditions are very complex. Faults well developed widely. Scouring, subsidence, goaf and magmatic intrusion occurred in No.3 mining layer, which have a great impact on the layout of roadways and workspace in the next step. Beiqi mining area is the continuous mining area of Qiwu coal mine. It is urgent to investigate geological structures and the occurrence of coal layers in the area. By the combination of comprehensive interpretation of conventional seismic time profiles and seismic attributes with the borehole data, the occurrence boundaries of the above-mentioned geological phenomena in the three coal layers in the area have been identified. Later roadway exposures are in good agreement with the results of three-dimensional seismic interpretation, and good application results have been achieved.