基于突变理论的煤层不连续性检测技术  

Technology for detection of coal seam discontinuity based on catastrophe theory

作　　者：于鹏飞[1] 董守华[1] 杨小慧[1] 薛海飞[1] 程彦[1] 

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221116

出　　处：《煤田地质与勘探》2011年第1期57-60,共4页Coal Geology & Exploration

基　　金：国家重点基础研究发展计划(973计划)项目(2009CB219603);国家科技重大专项课题(2008ZX05035-005)

摘　　要：通过突变理论的尖点突变模型及分析,将地震信号转化为尖点突变的标准形式。在时间域、频域计算突跳势、突跳时间等突跳参数,分析突跳参数异常,较好的反映了煤层的不连续性;比较相干、突跳理论两种技术在反映煤层不连续性上的效果,分析了各种技术的优缺点。尝试将相干属性和突跳参数属性进行融合,得到新的属性切片,很好的反映了煤层断层和裂隙富集区的分布情况。研究表明,利用突变参数进行断层的检测是可行的,突变理论将为煤层不连续性检测提供一种新的方法。The cusp model of catastrophe theory and its expression are mentioned in this paper.The seismic record is transformed into the normal form of cusp catastrophe.Catastrophic potential,catastrophic time and so on are calculated in time domain and in frequency domain.Analysis of catastrophic anomalies can better reflect the dis-continuity of coal seam.Comparing the effect of the theories of coherence and catastrophe in reflecting coal seam discontinuity,advantages and disadvantages of these two techniques were analyzed.Finally attempting to attribute catastrophe parameters with coherence and getting the new sections can reflect the distribution of zones rich in faults and fractures in coal seams.The study indicates that using catastrophe parameters to detect faults is feasible and catastrophe theory provides a new method for coal seam discontinuity detection.

关 键 词：突变理论 断层检测 尖点突变模型 融合切片 

分 类 号：P631[天文地球—地质矿产勘探]