地震属性分析在沙曲煤矿采空区的应用

Application of Seismic Attribute Analysis in Goaf of Shaqu Coal Mine

以沙曲煤矿采空区的三维地震勘探为例,对由于采煤形成的采空区地震反射波场进行正演模拟,分析3种不同填充模式下的采空区地震波场的振幅特征对采空区的影响。利用Geoframe解释软件,根据地震反射波同相轴在振幅、地震道上的特征,提取平均能量属性、方差属性进行采空区识别及边界刻画,再通过与实际采掘情况的对比,得到采空区解释的准确性。

The 3D seismic exploration to goaf of Shaqu coal mine as an example,the forward modeling of the seismic reflection field in goal due to coal mining is carried out, and the influence of amplitude characteristics of seismic wave field and spectral characteristics of goal in three different filling modes on the seismic reflection of goaf is analyzed. Using Geoframe interpretation software,according to the characteristics of seismic reflection events in amplitude and seismic trace,extracting average energy attributes,and variance attributes for goal recognition and boundary characterization,by comparing with actual mining situation, the accuracy of goaf interpretation is obtained.