综合物探对多煤层采空区综合勘查对比研究

Comprehensive Geophysical Exploration and Comparative Study of Multi-coal Strata Goaf Area

摘要:

为了探明多煤层采空区分布，利用地震波频率谐振勘探法及可控源音频大地电磁测深法进行综合勘查。本文阐述了地震波频率谐振勘探法及可控源音频大地电磁法的方法原理以及采空区的地球物理特征，结合实际案例，从波阻抗断面图及视电阻率断面图，分析了采空区的异常特征并圈定采空区范围，后经钻探验证,推断结果与实际情况基本吻合，并对两种勘探方法的优缺点进行了分析。本次研究将地震波频率谐振勘探技术应用于多煤层采空区的探测取得了良好的效果,对多煤层采空区的探测有很重要的借鉴和指导意义。

Abstract:

In order to explore the goaf area and situation of multiple coal seams, the seismic wave frequency resonance exploration method and the controllable source audio geodetic electromagnetic bathymetry method are used for comprehensive exploration. In this paper, the method principle of seismic wave frequency resonance exploration method, controllable source audio geodetic electromagnetic bathymetry method and physical characteristics of the goaf have been explained. Combining with actual cases, the abnormal characteristics of the goaf have been analyzed from the wave impedance section and apparent resistivity section, and the goaf area has been delineated. The inferred results are consistent with actual situation after drilling verification, and the advantages and disadvantages of the two exploration methods have been analyzed. In this study, the application of seismic wave frequency resonance exploration technology to the detection of multi-coal seam goaf has achieved good results. It has important references and guiding significance for the detection of multi-coal seam goaf.