三维地震勘探在干厚黄土浅煤层地区的应用

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英文篇名：Application of 3D Seismic in Shallow Buried Coal Areas Covered by Dry and Thick Loess 中文刊名：中国煤田地质 英文刊名：Coal Geology of China 作者：田忠斌 ; 王建青 ; 张胤彬 英文作者：Tian Zhongbin ; Wang Jianqing ; Zhang Yinbin(Shanxi Coal Geological Comprehensive Reconnaissance Surveying Team ; Jinzhong ; Shanxi 030600) 中文关键词：三维地震 ; 干厚黄土覆盖 ; 浅煤层 ; 静校正 ; 信噪比 英文关键词：D seismic ; dry and thick loess covering ; shallow buried coal ; static correction ; signal-noise ratio 出版日期：2004-06-30 机构：山西煤田地质综合普查队,山西煤田地质综合普查队,山西煤田地质综合普查队 山西晋中030600 ,山西晋中030600 ,山西晋中030600 年：2004 期：03 出版单位：中国煤田地质

摘要

干厚黄土覆盖地区表浅层黄土结构疏松、无潜水位,对地震波吸收强烈,难以开展三维地震勘探,特别是在煤层埋深浅的干厚黄土覆盖丘陵地区。在河东煤田某矿区,经多次试验,采取“高叠加次数、小炮检距、单深井激发、组合接收”等采集技术措施,使用绿山初至折射静校正方法及浮动基准面叠加方法的资料处理技术,最终有效地压制了干扰,提高了信噪比,使反射波更加突出,成像效果明显。
Since the dry and thick loess overburden has loose structure and without groundwater level,so it has strong absorptivity to seismic waves and very hard to carry out 3D seismic prospecting,especially in hilly ground shallow buried coal areas.In a mining area of Hedong coalfield, after multiple tests,we adopted ″multiple stacks, small offsets, single deep-well exciting, combined receiving″ data collection technical measures,used Green Mountain first arrival refraction static correction and relocatable datum planes stacking data processing techniques,finally suppressed noises effectively.It raised signal-noise ratio, standout reflected waves and made the imaging effect distinctly.

引文

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