小尺度曲率属性在煤田小微构造解释中的应用  

Application of small scale curvature in small and micro-structure interpretation of coal field

作　　者：程彦[1] CHENG Yan(Research Institute of Coal Geophysical Exploration,China National Administration of Coal Geology,Zhuozhou 072750,China)

机构地区：[1]中国煤炭地质总局地球物理勘探研究院,河北涿州072750

出　　处：《煤田地质与勘探》2020年第1期203-207,共5页Coal Geology & Exploration

基　　金：国家科技重大专项项目(2016ZX05043)。

摘　　要：煤田小微构造作为煤矿主要致灾源之一,对其精细解释与圈定是矿井安全高效生产的重要保障,而单纯借助传统的地震勘探方法与技术手段解决该问题,已无法满足精准开采地质保障的需求。为此,基于叠后三维地震数据体,通过提取60 Hz以上高频段成分信息,进行地震数据重构,并基于此提取小尺度的最小负曲率属性,对研究区小微构造进行解释与分析。通过与现场小微构造揭露和解释情况对比表明:基于高频信息重构的地震数据体纵向分辨率高,提取的小尺度曲率属性细节刻画能力强,相对于传统的最小负曲率属性在指示小微构造方面优势明显。因此,将基于重构地震数据体提取的小尺度曲率属性应用于煤田小微构造解释与圈定是合理可行的。The interpretation and delineation of small and micro-structure which acts as one of the main disaster sources in coal mine is an important guarantee for safe and efficient production of coal mines.However,it can’t satisfy the geological guarantee for precise mining by only using the traditional seismic exploration methods to solve this problem.Therefore,in this paper,we reconstruct the seismic data by extracting the components above 60 Hz from the 3D seismic data,and then extract minimum negative curvature to interpret and analyze the small and micro-structures in study areas.By comparing the revealed micro-structures and explained results on site,it shows that the resolution of reconstructed seismic data is improved and the extracted minimum negative curvature is more capable in describing and indicating the micro-structures than traditional curvature attribute.Therefore,interpreting and delineating the small and micro-structures in coal fields by using the small scale curvature extract from the reconstructed seismic data is reasonable.

关 键 词：小微构造 曲率 频谱分解 重构 

分 类 号：P631.4[天文地球—地质矿产勘探]