摘要
无线电波透视法作为煤矿工作面隐伏构造最常用且有效的探测方法之一,在保障煤矿安全开采中起到了重要的作用。目前,无线电波透视法存在横向分辨率较高,纵向分辨率不足的问题,对于异常构造在纵向分布的具体位置无法有效判断。与代数重建算法(ART)相比,同步迭代重建算法(SIRT)在反演过程中,对于每个网格慢度值的修正都是基于经过该网格的所有射线对其修正值的平均值进行的,考虑到了每条电磁波穿透工作面时,电磁波不同时间段在工作面内部的传播情况以及变化情况,从而提高了坑透法纵向分辨率。以寺河矿某工作面的坑透数据为例,对采集到的原始坑透数据进行筛选与校正后,利用SIRT算法反演实现工作面构造精确成像。证明了基于SIRT算法的坑透数据处理方法电磁波能量收敛效果更好,坑透探测的纵向分辨率得到了极大提升。
As one of the most commonly used and effective detection methods for hidden structures in coal mine working face,radio wave perspective plays an important role in ensuring the safety of coal mining.At present,the radio wave perspective method has the problem of high transverse resolution and insufficient longitudinal resolution,and it can not effectively judge the specific position of the abnormal structure in the longitudinal distribution.Compared with algebraic reconstruction technique algorithm(ART),the simultaneous iterative reconstruction technique algorithm(SIRT),in the inversion process,corrects the slowness value of each grid during the inversion process based on the average of the correction values of all rays passing through the grid.It takes into account the propagation and changes of electromagnetic waves inside the working face at different time periods when each electromagnetic wave penetrates the working face,thereby improving the longitudinal resolution of the pit penetration method.Taking the pit permeability data of a working face in Sihe Mine as an example,after screening and correcting the original pit permeability data collected,the SIRT algorithm was used to achieve accurate imaging of the working face structure.It was proved that the electromagnetic wave energy convergence of the data processing method based on SIRT algorithm was better,and the longitudinal resolution of pit penetration detection was greatly improved.
作者
田浩
刘波
马志超
Tian Hao;Liu Bo;Ma Zhichao(Shanxi Jinmei Group Technology Research Institute Co.,Ltd.,Jincheng 048006,China;Shanxi Province Technical Innovation Center for Mine Geophysical Exploration,Jincheng 048006,China;Mine Safety Branch,China Coal Research Science and Technology Institute,Beijing 100013,China)
出处
《能源与环保》
2024年第8期99-106,共8页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基金
煤科院技术创新基金(2023CX-Ⅱ-06)
煤科院新产品新工艺开发项目(2023CG-AQ-02)
国家自然科学基金资助项目(52104196)。
关键词
无线电波透视
数据校正
SIRT算法
纵向分辨率
radio wave perspective
data correction
SIRT algorithm
longitudinal resolution
