| 三维地震小面元采集技术在晋城矿区的应用 |
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| 引用本文： | 张胤彬.三维地震小面元采集技术在晋城矿区的应用[J].中国煤炭地质,2008(6):70-72. |
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| 作者姓名： | 张胤彬 |
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| 作者单位： | 山西省煤炭地质物探测绘院,山西晋中030600 |
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| 基金项目： | 国家重大产业技术开发专项项目资助（发改办高技[2005]1255）. |
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| 摘 要： | 依托“西部煤炭资源高精度三维地震勘探技术”工程，对晋城矿区进行了旨在提高小断层，小陷落柱探测能力的高密度三维地震勘探。根据面元选择因素及该区地质任务，采用5m×5m网格进行野外数据采集；考虑炮检距、方位角、覆盖次数、排列片横纵比及煤层埋深（350～500m）等因素，采用中点放炮、60道接收，24次覆盖（横向4次，纵向6次）的8线16炮束状观测系统，基岩中激发。原始资料经同一处理流程后，获得5m×5m×1ms、5m×10m×1ms、10m×10m×1ms及2.5m×2.5m×1ms不同单元的三维数据体多个，通过对比可以发现小断层，小陷落柱在其小面元叠加时间剖面、顺层切片及相干切片都有清晰的反映。实例说明，小面元采集技术可以提高对小构造的纵、横向分辨能力，满足山区对三维地震精确勘探的要求。
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| 关 键 词： | 小面元采集技术 三维数据体 断层 陷落柱 三维地震 晋城矿区 |
Application of 3D Seismic Small Surface Element Acquisition Technology in Jincheng Mining Area |
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| Zhang Yinbin.Application of 3D Seismic Small Surface Element Acquisition Technology in Jincheng Mining Area[J].Coal Geology of China,2008(6):70-72. |
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| Authors: | Zhang Yinbin |
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| Institution: | Zhang Yinbin (Shanxi Provincial Coal Geological, Geophysical Prospecting, Surveying and Mapping Institute, Jinzhong, Shanxi 030600) |
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| Abstract: | Rely on the ＂Western China Coal Resource High Precision 3D Seismic Prospecting Technology＂ project engineering, carried out high density 3D seismic prospecting aim to improve minor fault, small subsided column exploration ability. Based on surface element selection factors and geologic tasks in the area, 5m×5m grid field data acquisition is adopted; considering factors of offset, azimuth, fold, spread patch aspect ratio and coal seam depth （350-500m）, have used split shooting, 60 traces receiving, 24 folds （transversal 4, longitudinal 6） 8 lines 16 shots bunchy field setup and shooting in bedrock. Original data processed in a same flow, obtained 5m×5m＊1ms, 5m×10m×1ms, 10m×10m×1ms and 2.5m×2.5m×1ms different unit multiple 3D data volumes, through contrast can find there are clear reflection of minor faults, small subsided columns on small surface element stacked time sections, bedding and coherent slices. Examples demonstrated that the small surface element acquisition technology can improve small structure transversal and longitudinal resolutions and satisfy mountainous area 3D seismic precision prospecting requirements. |
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| Keywords: | small surface element acquisition technology 3D data volume fault subsided column 3D seismic prospecting Jincheng mining area |
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