富水采空区瞬变电磁拟地震探测实验研究

摘要

为了准确分析煤矿富水采空区的分布与影响范围，在对古书院煤矿富水采空区进行瞬变电磁探测的基础上，设计了基于波场变换的瞬变电磁拟地震数据处理实验方案，并同传统瞬变电磁数据处理方法进行了对比分析。结果表明，在拟地震断面图中，富水采空区边界与所圈定的电性界面存在显著的对应关系，同传统瞬变电磁数据处理方法相比，基于波场变换的拟地震数据处理方法能够更有效地分辨富水采空区的分布及边界范围，克服体积效应带来的不利影响，提高了纵向分辨率，为采空区水害防治提供依据。%To accurately analyze coalmine water rich gob area distribution and impacting extent, on the basis of Gushuyuan coalmine water rich gob area TEM prospecting, designed TEM pseudo-seismic data processing experimental scheme based on wave field trans⁃formation, carried out contrastive analysis with traditional TEM data processing method. The result has shown, on pseudo-seismic sec⁃tion, water rich gob area boundary has obvious correspondence with delineated electrical interface. In comparison to traditional TEM data processing method, pseudo-seismic data processing method based on wave field transformation can more effectively differentiate water rich gob area distribution and boundary extent, overcome disadvantages from volumetric effect, improve longitudinal resolution, provide basis for gob area water hazard control.