煤巷掘进中陷落柱地质构造探测仿真及结果分析

Simulation analysis on geological structure detection of collapse column in coal roadway excavation

为了探测掘进面前方隐伏的陷落柱地质构造,采用双频激电法煤巷综掘超前探测技术,建立了陷落柱地质构造物理模型,根据其电性参数将物理模型简化为相应的等效电路,通过Simulink平台构建了陷落柱地质构造的激电模型并进行模拟测试,得出了该激电模型的视电阻率值和视频散率PFE值的变化曲线。仿真探测结果与激电模型预设的电性参数基本一致,验证了该仿真探测模型对陷落柱地质异常预报的有效性,为下一步开发该技术的配套探测仪器提供了必要的参考依据。

To detect the collapse column geological structure hidden behind the excavation face,dual-frequency induced polarization ahead- detecting technology（ DIPAT） is applied, physical model of collapse column is built, which is simplified into equivalent circuit,according to the electrical parameters. The induced polarization model of collapse column is established based on Simulink,obtaining the resistivity and the PFE value curves. According to the consistency of the simulation detection results and the preinstalled parameters of the induced polarization model, the correctness of the simulation detection model is proved.