多偏移距地震映像法应用技术研究
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摘要
在地震映像方法勘探中,不同偏移距获得的地震波所包含的信息是不一样的,同时,偏移距也是影响地震分辨率的一个主要因素,合理选取偏移距能取得更好的勘探效果。本文结合对向家坝至上海高压输电线路湖北咸宁段塔基岩溶地带采用浅层地震多偏移距映像勘探技术勘察的实例,应用共偏移距处理技术,抽取映像法勘探结果中不同偏移距下的多条地震剖面作对比研究,分析不同偏移距下地震波对于地质异常体的反映,探讨适合多波联合勘探的最佳接收窗口内的最佳偏移距,以提高勘探效率和精度。
In exploration of mutil-wave seismic imaging technique,the information gained from different seismic wave is not the same,by choosing suitable offsets,you can gain better exploration effects.This paper,which is based on the survey of karsts foundation of Xianning Section of the high voltage wire from Xiangjiaba to Shanghai by using mutil-wave & mutil-offset superficial seismic imaging technique and by applying conjunct-offset processing technology,compares the time sections of different offsets through imaging exploration and analyzes the reflection of unusual geological body in reflected waves and surface waves.It explores the optimal window of offset using the multi-wave joint exploration method for the efficiency and accuracy of seismic exploration.
In exploration of mutil-wave seismic imaging technique,the information gained from different seismic wave is not the same,by choosing suitable offsets,you can gain better exploration effects.This paper,which is based on the survey of karsts foundation of Xianning Section of the high voltage wire from Xiangjiaba to Shanghai by using mutil-wave & mutil-offset superficial seismic imaging technique and by applying conjunct-offset processing technology,compares the time sections of different offsets through imaging exploration and analyzes the reflection of unusual geological body in reflected waves and surface waves.It explores the optimal window of offset using the multi-wave joint exploration method for the efficiency and accuracy of seismic exploration.
引文
[1]单娜琳,程志平.地震映像方法及其应用[J].桂林工学院学报,2003,23(7):36～37.
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[4]王万合,王晓柳,刘江平,等.地震映像法在某高速公路岩溶探测中的应用[J].工程地球物理学报,2007,4(2):141～145.
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[9]蒋连斌,何樵登,王建民,等.高分辨率地震野外参数的选取[J].长春地质学报,1998,28(1):89～94.
[2]肖宏跃,雷行建,雷宛.环境物探技术在岩溶勘察中的应用与效果[J].灾害学,2007,22(3):58～60.
[3]刘江平,陈超.浅层地震映像法在堤坝无损检测中的应用[J].人民长江,2002,33(5):28～29.
[4]王万合,王晓柳,刘江平,等.地震映像法在某高速公路岩溶探测中的应用[J].工程地球物理学报,2007,4(2):141～145.
[5]董世泰,高红霞.单点单检波器地震勘探技术[J].石油仪器,2005,19(2):66～68.
[6]朱涛,何正勤,冯锐,等.地震—电成像联合探测试验[J].地震地质,2007,29(2):373～379.
[7]熊章强,张学强.高密度地震映像勘察方法及应用实例[J].地震学报,2004,26(3):313～317.
[8]杨祥森,林呁,崔德海.地震映像法在铁路隧道隐伏岩溶勘查中的应用[J].工程地球物理学报,2007,4(5):470～474.
[9]蒋连斌,何樵登,王建民,等.高分辨率地震野外参数的选取[J].长春地质学报,1998,28(1):89～94.
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