摘要
通过对煤炭采区三维地震属性的研究,提出了基于地震波形差异属性解释煤矿陷落柱的发育边界、发育高度的技术方法,实例表明:地震波形差异属性对地质异常体的分辨能力与参与波形差异比较的道数及时间分析窗口大小有关,多道数、大时窗,可突出大的地质异常;相反少道数、小时窗可有效反映小的地质异常体,特别是对小地质异常体边界的刻画会更准确。与地震时间剖面、地震属性切片及倾角属性剖面相比,地震波形差异属性解释陷落柱在煤层中的发育边界、发育高度方面具有明显的优势。
Through the study on coal winning district 3D seismic attribute, coalmine subsided column boundary and developed height accurate analysis based on seismic waveform differential attribute technical method has been put forward. Examples have demonstrated that： seismic waveform differential attributes relate to resolving power of geological anomalous bodies, wiggle trace number participates in different waveforms comparison and size of time analysis windows. Multiple traces, large time windows can give prominence to larger geological anomalies; on the contrary, less traces, small time windows can reflect smaller geological anomalies effectively, especially more accurate on small geological anomalous body boundary depicting. In comparison to seismic section, seismic attribute slice and dip angle attribute section, seismic waveform differential attribute interpretation has obvious predominance on subsided column boundary in coal seams, developed height depicting.
出处
《中国煤炭地质》
2012年第8期61-65,共5页
Coal Geology of China
关键词
三维地震
波形差异属性
属性切片
煤矿陷落柱
3D seismic prospecting
waveform differential attribute
attribute slice
coalmine subsided column
