地震属性融合技术在砂岩型铀矿断层识别中的研究与应用  

Research and application of seismic attribute fusion technology in fault identification of sandstone-type uranium deposit

作　　者：赵威 魏滨[1] 宁媛丽[1] 朱圣伟 杨晓柳 张伟[1] 李江坤[1] 李毅[1] 孟锐 ZHAO Wei;WEI Bin;NING Yuanli;ZHU Shengwei;YANG Xiaoliu;ZHANG Wei;LI Jangkun;LI Yi;MENG Rui(Airborne Survey and Remote Sensing Center of Nuclear Industry,CNNC Key Laboratory of Uranium Resource Geophysical Exploration,Shijiazhuang 050002,Hebei,China)

机构地区：[1]核工业航测遥感中心,中核集团铀资源地球物理勘查技术中心(重点实验室),河北石家庄050002

出　　处：《矿产与地质》2023年第1期121-127,共7页Mineral Resources and Geology

基　　金：中核集团“砂岩型铀矿高精度三维地震勘探赋矿有利砂体识别技术研究”(编号:2020-189);中国铀业有限公司“砂岩型铀矿高精度三维地震勘探技术应用体系研究”(编号:2021-10-4);中国核工业地质局“内蒙古通辽市海力锦地区三维地震勘探”(编号:2021-10-12)共同资助。

摘　　要：砂岩型铀矿由于其埋藏深度浅,浅层地震信息易受到噪音的影响,在使用相干体技术来进行断层的解释时,其属性剖面常呈现出多解性,给小断层的识别带来了一定的困难。为改善这一问题,结合谱分解技术高分辨率和抗噪性的优点,采用主成分分析法来对这两种地震属性进行融合,以改善单一地震属性对断层的分辨能力,经正演模拟及实际工区试算,融合后的地震属性剖面断层线清晰、断点干脆,取得了较好的应用效果。Due to the shallow burial depth,the shallow seismic information of sandstone-type uranium deposit is easily affected by noise.When using coherence cube technology to interpret faults,its attribute profile often presents multiple solutions,which brings certain difficulty to the identification of small fault.In order to improve this problem,combined with the advantage of high resolution and noise resistance of spectral decomposition technology,the principal component analysis method is used to fuse these two seismic properties to improve the resolution ability of a single seismic attribute on the fault.Through the forward simulation and actual work area trial calculation,the fault line of the fused seismic attribute profile is clear and the breakpoint is crisp.It has achieved for a good application effect.

关 键 词：砂岩型铀矿 断层 相干分析 谱分解 属性融合 正演模拟 

分 类 号：P631.4[天文地球—地质矿产勘探] P619.14[天文地球—地质学]