地震勘探弯线技术在巨厚黄土塬区沟谷条件下的应用
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摘要
陇龙地区的地形特征一是冲沟纵横交错,沟壁陡立;二是黄土层厚度大,潜水位深。该区地震勘探具有地震波衰减快、干扰波强、信噪比低、施工困难等特点。通过实验,在该区不同地形条件下使用不同激发方式,并采用弯线观测系统及大偏移距,有效提高了地震资料的S/N和分辨率,使野外地震记录达到了地震地质解释的要求。
Terrain configuration of Longlong area is gullies arranged in a crisscross pattern with precipitous gully walls,thick loess and deep groundwater level.The area's seismic prospecting characteristics have tantivy attenuation of seismic waves,strong interference waves,low signal-noise ratio and difficult operational conditions.Through experiments in different terrain conditions in the area demonstrated that to use different shot mode,slalom line field setup and larger offset can improve seismic data S/N and resolution effectively make the field seismic recording satisfactory to seismogeological interpretation.
引文
[1]阎世信,吕其鹏.黄土塬地震勘探技术[M].北京:石油工业出版社,2001.
    [2]孙家振,李兰斌.地震地质综合解释教程[M].武汉:中国地质大学出版社,2002.
    [3]郭良红,田小平.黄土塬区煤田弯线地震勘探采集技术的应用[J].中国煤田地质,2006,18(6).

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