井间地震层析成像技术在岩溶勘察中的应用
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摘要
介绍了井间地震层析成像技术测试的工作原理及工作方法,然后利用层析成像反演算法对现场获取的原始测试数据进行了解译,得到溶洞沿不同测线的剖面分布图和不同高程处的平面分布图,并将其与场地现有钻孔地质资料进行对比验证,结果表明井间地震层析成像技术有较高的精度和可信度,可得到场地中溶洞的空间分布,从而为工程设计提供可靠的地质资料。
The cross-well seismic computerized tomography technology and its operation method are introduced in this paper.The application of this technology to a factual cavern survey engineering is presented.The data obtained from the site are interpreted combined the data with an inversion method for seismic computerized tomography.Plan and section plans of karst cave distribution are obtained.Comparison is carried out between the result of the cross-section electromagnetic topography technique and the data from the borehole.The results show that the seismic computerized tomography technology have the advantages of higher precision and credibility,and three dimension space distribution of karst cave can be obtained by the inversion analysis.The method can be used to provide detailed geological data for engineering design.
The cross-well seismic computerized tomography technology and its operation method are introduced in this paper.The application of this technology to a factual cavern survey engineering is presented.The data obtained from the site are interpreted combined the data with an inversion method for seismic computerized tomography.Plan and section plans of karst cave distribution are obtained.Comparison is carried out between the result of the cross-section electromagnetic topography technique and the data from the borehole.The results show that the seismic computerized tomography technology have the advantages of higher precision and credibility,and three dimension space distribution of karst cave can be obtained by the inversion analysis.The method can be used to provide detailed geological data for engineering design.
引文
[1]杨文采.地球物理反演和地震层析成象[M].北京:地震出版社,1989.
[2]毛先进,陈绍青,杨玲英,等.地震CT技术在复杂岩溶坝基渗漏探测工程中的应用[J].地震研究,2008,31(2):171-173.
[3]杜立志,张晓培,牛建军.地震层析成像技术在岩体完整性测试中的应用[J].应用地球物理,2006,3(3):192-195.
[4]孙跃军,俞国柱,石桂,等.井间地震层析成像技术及其在岩溶勘察中的应用[J].CT理论与应用研究,2001,10(4):10-13.
[5]肖宽怀,刘浩,孙宇.地震CT勘探在昆石公路隧道病害诊断中的应用[J].地球物理学进展,2003,18(3):472-476.
[2]毛先进,陈绍青,杨玲英,等.地震CT技术在复杂岩溶坝基渗漏探测工程中的应用[J].地震研究,2008,31(2):171-173.
[3]杜立志,张晓培,牛建军.地震层析成像技术在岩体完整性测试中的应用[J].应用地球物理,2006,3(3):192-195.
[4]孙跃军,俞国柱,石桂,等.井间地震层析成像技术及其在岩溶勘察中的应用[J].CT理论与应用研究,2001,10(4):10-13.
[5]肖宽怀,刘浩,孙宇.地震CT勘探在昆石公路隧道病害诊断中的应用[J].地球物理学进展,2003,18(3):472-476.
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