煤矿岩溶陷落柱的地震资料解释
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摘要
陷落柱赋存特点及其与围岩地层的物性差异,决定了其陷落柱特殊的地震响应特征:如地震剖面出现同相轴的中断、扭曲、弯曲、倾斜现象以及振幅、波形、频率等动力学特征突变现象,另外还可见异常波;在属性切片上其形态特征表现为椭圆形、似圆形,有时可见到长条形或串珠状。断陷点的解释是陷落柱解释的关键,为此利用放射状、网格状测线切出的剖面来解释陷落柱,能够基本控制断陷点的位置,再配合属性切片、三维可视化显示等解释手段,全方位、多角度地对数据体进行分析,大大提高了解释陷落柱的准确度。运用该种方法解释的成果已得到实际资料的验证。
The hosting features and physical property differences with surrounding rock of subsided columns decide their special seismic response characteristics. Such as phenomena of breaking lineups,twisting,bending and tilting on seismic sections,as well as amplitude,waveform,frequency kinetic feature mutations,besides,abnormal events;shape characteristics on attribute slice have ellipse,circle-like,sometimes long strip or beaded. The interpretation of breaking point is the key of subsided column interpretation,for this,sections derived from radial,latticed traverses are used in interpretation,thus can basically control the locations of breaking points. Then combined with means of attribute slice,3D visualization,carry out omnidirectional,multi-angled data volume analyses,thus can improve accuracy of subsided column interpretation greatly. The method is already verified in practices.
The hosting features and physical property differences with surrounding rock of subsided columns decide their special seismic response characteristics. Such as phenomena of breaking lineups,twisting,bending and tilting on seismic sections,as well as amplitude,waveform,frequency kinetic feature mutations,besides,abnormal events;shape characteristics on attribute slice have ellipse,circle-like,sometimes long strip or beaded. The interpretation of breaking point is the key of subsided column interpretation,for this,sections derived from radial,latticed traverses are used in interpretation,thus can basically control the locations of breaking points. Then combined with means of attribute slice,3D visualization,carry out omnidirectional,multi-angled data volume analyses,thus can improve accuracy of subsided column interpretation greatly. The method is already verified in practices.
引文
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[11]Tracy J Stack.Surface slice generation and interpretation:A review[J].The Leading Edge,1996,15(7):818-819.
[2]尹尚先,武强.煤层底板陷落柱突水模拟及机理分析[J].岩石力学与工程学报,2004,23(15):2551-2556.Yin Shang-xian,Wu Qiang.Simulation and mechanism analysis of water inrush from karstic collapse columns in coal floor[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(15):2551-2556.
[3]杨德义,王赟,王辉.陷落柱的绕射波[J].石油物探,2000,39(4):82-86.Yang De-yi,Wang Yun,Wang Hui.Diffraction waves from fallen pillars[J].GPP,2000,39(3):82-86.
[4]勾精为,程增庆,陈加林.三维地震探测陷落柱的可行性研究[G]//计算机在地学中的应用国际讨论会论文摘要集,1991.
[5]吴守华,周国兴,杨素霞等.陷落柱地震响应特征分析[J].煤田地质与勘探,2004,32(3):52-54.Wu Shou-hua,Zhou Guo-xing,Yang Su-xia,et al.Analysis for the seismic response characteristics of collapse column[J].Coal Geology&Exploration,2004,32(3):52-54.
[6]唐汉平,张广忠,朱书阶,等.复杂山区三维地震勘探方法的研究和应用[J].煤田地质与勘探,2004,32(3):55-57.TANG Han-ping,ZHANG Guang-zhong,ZHU Shu-jie,et al.The research and application of3D seismic exploration in complicated mountain area[J].Coal Geology&Exploration,2004,32(3):55-57.
[7]韩爱英.三维地震技术在探测陷落柱中的应用[J].河北建筑科技学院学报,2002,19(1):75-78.HAN Ai-ying.Application of the3D seismic method to survey collapse column[J].Journal of Hebei Institute of Architectural Science and Technology,2002,19(1):75-78.
[8]张广忠,程建远,李林元,等.东庞煤矿突水陷落柱边界的综合解释[J].煤炭学报,2006,31(增刊):88-92.Zhang Guang-zhong,Cheng Jian-yuan,Li lin-yuan,et al.Integrated interpretation of inrushing collapse column's boundary in Dong-pang coal mine[J].Journal of China Coal Society,2006,31(supplement):88-92.
[9]宁建宏,张广忠.陷落柱的地震识别技术及其应用[J].煤田地质与勘探,2005,33(3):64-67.NING Jian-hong,ZHANG Guang-zhong.Seismic identification technique and its application of collapse column[J].Coal Geology&Exploration,2005,33(3):64-67.
[10]杨德义.煤田陷落柱在地震时间剖面上的特征[M]//中国地球物理学会年刊.上海:同济大学出版社,1997.Yang De-yi.The characteristic of coal field collapse column in seismic time profile[M]//Chinese Geophysical Society Annual.Shanghai,Tongji University Press,1997.
[11]Tracy J Stack.Surface slice generation and interpretation:A review[J].The Leading Edge,1996,15(7):818-819.
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