摘要
采用时窗能量比法对原始槽波记录进行特征变换,再对变换后的槽波记录提取共散射点道集,在共散射点道集的基础上使用基于等效偏移距的散射波成像方法进行成像。模拟槽波记录表明,经过特征变换后,槽波信号的分辨率得以提高,反射槽波相比变换前更容易识别,成像结果能够准确反映异常构造所在的位置。将该方法用于实际槽波记录结果表明:基于时窗能量比特征变换的散射槽波成像,能够对异常能量有更好的聚焦,反射槽波成像效果更好。
The method of time window energy ratio is used to transform the original channel wave records.Then the common scattering point gathers are extracted from the converted channel wave records.Based on the common scattering point gathers,the scattering wave imaging method based on the equivalent offset is used for imaging.The simulated channel wave records show that after the feature transformation,the resolution of the channel wave signal is improved,the reflected channel wave is easier to identify than that before the transformation,and the imaging results can accurately reflect the location of the abnormal structure.This method is applied to practical channel wave recording.The results show that the scattered channel wave imaging based on the characteristic transformation of time-window energy ratio can focus the abnormal energy better,and the reflection channel wave imaging is better.
作者
金丹
JIN Dan(China Coal Technology and Engineering Group Xi’an Research Institute,Xi’an 710077,China)
出处
《煤矿安全》
CAS
北大核心
2019年第7期234-237,共4页
Safety in Coal Mines
基金
国家重点研发计划资助项目(2018YFC0807804)
贵州省科技重大专项资助项目([2018]3003-1)
中煤科工集团西安研究院有限公司科技创新基金重点资助项目(2018XAYZD02)
关键词
时窗能量比
槽波
等效偏移距
共散射点道集
散射波成像
time-window energy ratio
channel wave
equivalent offset
common scattered point gathers
scattering imaging
