用共偏移距反射法拓展地质剖面的解释深度  

Extending interpretation depth of geological cross-section using common-offset reflection method

作　　者：何正勤[1] 潘华[1] 胡刚[1] 叶太兰[1] 宋毅盛[1] 陈文彬[1] 

机构地区：[1]中国地震局地球物理研究所,中国北京100081

出　　处：《地震学报》2010年第2期224-233,共10页Acta Seismologica Sinica

基　　金：地震行业科研专项<核电厂地震安全问题研究(200708003)>;地震行业科研专项<井地联测VSP技术在隐伏活断层上断点确定中的应用(200808007)>共同资助;中国地震局地球物理研究所论著10AC1010

摘　　要：针对核电工程选址中的能动断层地质调查工作需要,提出了利用共偏移距浅层地震反射时间剖面来拓展地质剖面解释深度的技术方法,通过物性和岩性的综合解释来提高对能动断层鉴别及其产状确定的可靠性.探测试验结果表明该方法是有效可行的.地质剖面上描述的断裂破碎带在共偏移距时间剖面上反应明显,二者可以相互印证,优势互补.该技术方法可用于类似工程地质调查和第四系覆盖较薄地区的隐伏断层探测.In order to meet the needs of capable fault geological survey on nuclear power project sites,this paper proposes a technical method of using common-offset shallow seismic reflection profiles to extend the interpretation depth of geological cross-sections.Through comprehensive interpretation of the physical properties and lithology,the identification of capable faults and determination of their attitude can be more reliable.The test results show that the method is effective and feasible.The fracture zones found on geological profiles are also visible on the common-offset shallow seismic reflection profiles.The geological and seismic interpretations may verify each other.The technical approach provided by this paper can be applied to similar engineering geological investigations,and also to buried fault detection in a thin Quaternary covered area.

关 键 词：浅层地震勘探 共偏移距 能动断层 断裂破碎带 地质剖面 

分 类 号：P315.2[天文地球—地震学]