煤田地质与勘探

2020, (06) 15-24

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山西煤矿采区高密度三维地震勘探综述
Summary of high density 3D seismic exploration in the mining districts of coal mines in Shanxi Province

侯泽明,杨德义
HOU Zeming, YANG Deyi

摘要(Abstract):

在对国内外高密度三维地震勘探技术研究及应用现状进行系统阐述的基础上,对高密度三维地震勘探的3个关键参数及概念进行了讨论,认为高密度三维地震勘探技术是先进地震勘探技术的集成,具有组合性和相对性,应灵活应用,因地制宜地开展。在分析了山西煤矿采区的地震地质条件及技术特点的基础上,提出了在山西煤矿采区开展高密度三维地震勘探应遵循“小面元、高覆盖、宽方位(3,必要条件)和相应的关键采集及处理技术(X,必选项) ”的“ 3+X”技术路线;在数据采集中,应以提高信噪比为核心;在数据处理中,应以高精度静校正和叠前去噪为核心。将该技术运用到山西某矿工程实例中,取得很好的效果,证明该技术路线的有效性。研究成果可为同行提供技术参考,并促进高密度三维地震勘探技术在山西煤矿采区推广。
Based on the systematic description of high density 3D seismic exploration technology researches and application status at home and abroad, three key parameters and concepts of high density 3D seismic exploration technology are discussed, the high density 3D seismic exploration technique is a integration of advanced seismic exploration technology, with combination and relativity, should be applied flexibly and carried out according to local conditions. Based on the analysis of the seismic geological conditions and technical characteristics of Shanxi coal mining areas, it is proposed that the "3+X" technical route should be followed, that is "small surface element, high coverage, wide azimuth (3 necessary conditions), corresponding key acquisition and processing technology(X, necessary option)" in the high density 3D seismic exploration in Shanxi coal mining area; improving signal-to-noise ratio is the kernel in the process of data acquisition and processing, high precision static correction and pre-stack noise should be the core in data processing. The validity of this technique is proved by the practical application examples. This idea can be used as a reference for colleagues who are engaged in high density 3D seismic exploration, and it has certain significance for improving the resolution and accuracy of seismic interpretation results.

关键词(KeyWords): 高密度三维地震;采集参数;信噪比;山西煤矿采区
high density 3D seismic exploration;acquisition parameters;signal-to-noise ratio;Shanxi coal mining districts

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作者(Author): 侯泽明,杨德义
HOU Zeming, YANG Deyi

DOI: 10.3969/j.issn.1001-1986.2020.06.003

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