倾斜煤层工作面地质异常无线电波透视探测数据处理方法研究

Study on Data Processing Method of Radio Wave Perspective Detection of Geological Anomalies in Inclined Coal Seam Working Face

摘要: 在倾斜煤层工作面无线电波探测的吸收系数反演过程中，初始场强值的设定方式对地质异常体识别精度存在重要影响。为实现精细探测煤层工作面地质异常区，本研究对比分析初始场强值定参处理与不定参处理的效果差异，通过数值模拟构建典型地质模型，并结合顾北矿13521工作面实际案例进行验证。研究以130 dB为典型初始场强值进行定参后进行接收场强值吸收反演成像。数值模拟与实际工程验证结果表明：未定参处理吸收系数反演成像易产生假异常区，导致实际异常区与正常煤层吸收系数值区分度低；采用定参处理后，异常区吸收系数值显著高于正常煤层，可精准界定异常边界，解释结果与实际地质模型构造和实际工作面回采验证均较为吻合。该技术有效克服传统方法缺陷，为煤层地质异常区精细探测提供可靠方案，对倾斜煤层工作面的安全高效生产提供了地质保障依据。

Abstract: In the process of inversion for the absorption coefficient of radio wave detection in inclined coal seam working faces, the method of setting the initial field strength significantly affects the accuracy of identifying geological anomalies. To achieve precise detection of geological anomaly zones in coal seam working faces, this study compares the effects of parameterized and non-parameterized processing of initial field strength values. Through numerical simulation, a typical geological model is constructed, and the results are validated using the actual case of the 13521 working face at Gu Bei Mine. The study uses 130 dB as the typical initial field strength value for parameterized processing and then performs receiver field strength value absorption inversion imaging. Numerical simulations and practical engineering validation show that non-parameterized processing of the absorption coefficient inversion imaging can easily produce false anomaly zones, leading to low differentiation between actual anomaly zones and normal coal seam absorption coefficient values. After parameterized processing, the absorption coefficient values of anomaly zones are significantly higher than those of normal coal seams, allowing for precise boundary definition of anomalies. The interpretation results are consistent with the actual geological model construction and the validation of the actual working face mining. This technology effectively overcomes the shortcomings of traditional methods, providing a reliable solution for the precise detection of geological anomaly zones in coal seams, and offering a geological basis for the safe and efficient production of inclined coal seam working faces.