利用地震反演信息划分煤体结构  

Utilizing seismic inversion information in classifying coal structures

作　　者：王远[1,2] 崔若飞[1,2] 孙学凯[1,2] 崔大尉[1,2] 秦轲[1,2] 

机构地区：[1]煤层气资源与成藏过程教育部重点实验室,江苏徐州221116 [2]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4期69-73,76,共6页Coal Geology & Exploration

基　　金：国家重点基础研究发展计划(973计划)项目(2007CB209400);国家自然科学基金项目(40874054);中央高校基本科研业务专项资金项目(2010ZDP01A07)

摘　　要：基于不同煤体结构的物理性质不同,利用叠前地震反演信息得到的多种弹性参数可以进行煤体结构的划分,从而确定煤层裂隙发育带。介绍了同步反演的理论基础和实现过程,对同步反演结果进行了初步分析,并通过LMR变换获得2个岩性指示因子LR与MR,利用二者的交汇图划分煤体结构,进而预测了淮南张集煤矿西三采区煤层裂隙发育区域。这种基于叠前资料的反演分析方法,能有效地利用以往被忽略的叠前地震信息,显著提高岩性解释水平。Based on the discrepancies in characters of different coal structures,the coal fractured zones are able to be determined by classifying different structural coal using the elastic parameters derived from the pre-seismic inversion.This paper introduced the theoretical basis and realization of the simultaneous inversion.Then,some primary analysis were conducted on the simultaneous inversion results,in which two lithological factors LR and MR have been obtained through LMR transform.By making use of the cross-plot of these two factors in analyzing the coal structures,the fractured zones have been delineated in mining district No.3 of Zhangji mine in South Anhui.This inversion analysis method can efficiently exploit the pre-stack information,which is often ignored in the past,significantly elevating the lithological explanation level.

关 键 词：煤体结构 裂隙发育带 预测 地震反演 交汇图 

分 类 号：P631[天文地球—地质矿产勘探]