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1、作者对文章发表录用情况说明：本文被地球物理学进展录用，预计明年上半年发表，已经保证不在向外界刊物发表，本文限于内部刊物并不上传相关网络。陷落柱的地震响应特征分析及应用张玉法1,2,王大刚2,崔国华2（1.成都理工大学，成都610000；2.四川省煤田地质工程勘察设计研究院，成都610072）摘要：通过分析陷落柱的地质特征和物性特征，进行地震数值模拟，分析其地震响应特征，在实际资料中进行应用。结果表明：从单炮记录上观测陷落柱，主要是考虑陷落柱的下凹特征，需考虑凹界面的曲率与埋深之间的关系。从物性上看，陷落柱内部与外部的物
2、性差异变化为地震资料区分陷落柱建立了基础。在陷落柱上方，地层裂隙发育，引起地震振幅能量弱，具有下凹趋势，在陷落柱的内部，地震波反射波到达时间延迟，能量弱，相位下凹，甚至反射波零乱。在水平切片上，能看到明显的圈状异常。关键词：陷落柱地震属性响应特征中图分类号文献标识码文章编号SeismicresponsecharacteristicsofthecollapsecolumnanalysisandapplicationofZHANGYU-fa1,2,CUIGUO-hua2,WANGDa-gang2（1.ChengduUniv
3、ersityofTechnology,Chengdu610000,China;2.SichuanCoalGeologicalEngineeringDesign&ResearchInsitute,Chengdu610072,China）Abstract：Baseonthecollapsecolumncharacteristicsandphysicalpropertiesofgeologicalfeatures,seismicresponsecharacteristicsofthecollapsecolumnwasanal
4、yzedbyseismicnumericalsimulation,apracticedatawascollectedandancollapsecolumnwasinterpretedaccordingtothesecharacters.Theresultsshowedthat:thephysicalpropertiesdifferenceamongtheupward,internalandsurroundingofthecollapsecolumnleadtochangesinseismicwaves.Onthetop
5、oftheCollapsecolumns,thelayersshowsslightlyorsignificantlysubsidencewithinformingconcavesurface,groundfissures.TheinnerlayeroftheCollapsecolumnsshowsobvioussubsidence,andthelowerP-wavevelocityanddensitycomparingwiththesurrounding.Forasingleshotrecord,weneedtocon
6、sidertherelationshipbetweenconcavecurvatureandthedepthoftheinterface.IfthesourceislocatedinthecenteroftheConcaveinterface,thereisrotationwave,ifwesetshotandreceivertolocateatthecenteroftheconcaveinterface,wecanclearlyseethefocusreflectioninthesingleshotrecord.If
7、theshot,belowtheconcavecenter,wecanseetheordinaryreflectedwave,whilethereflectedwavedelays.Forastackedseismicdata,ifthereisthecollapsecolumn,wecanobservethedifferentseismicresponsecharacteristicsindifferentlocations.OnthetopofthecollapseColumn,theenergyofseismic
8、wavesshowsweak,thereflectedwavelooksInferior.TheinnerlayerofthecollapseColumnhasaconcavefeatures,wecanseering-shapedanomalyinthehorizontalslice.Keywords：collapsecolum
