富水构造地质异常体矿井直流电法超前探查响应特征

掘进工作面前方隐伏的富水地质构造一直是影响煤矿安全生产的一大隐患，对巷道前方富水异常构造的准确定位，能够及时预警并采取合理的防治措施，确保矿井安全生产。矿井直流电法超前探测技术是煤矿掘进工作面超前预报的重要手段之一，建立了几种富水低阻地质异常体三维模型，通过COMSOL Multiphysics模拟，分析探讨了低阻地质异常体在三维空间中不同展布形态下的矿井直流超前探测响应。研究结果表明，掘进工作面前方低阻地质异常体的不同展布形态对直流电法超前探测结果有很大影响。当地质异常体走向与巷道展布方向一致时，异常响应幅值最大，分辨率最高，但异常的定位位置相对于地质异常体位置有所偏差；当地质异常体走向与巷道展布方向垂直时，异常响应幅值最小，异常分辨率最低，但定位的异常位置与地质异常体位置重合，且异常范围最小。

Response characteristics of direct current method advanced exploration in mine with water rich structural geological anomaly

The hidden water-conducting geological structure in front of the roadway has always been a major hidden danger to the safe production of coal mines.The location and analysis of the abnormal water-rich structure in front of the roadway can promptly provide early warning and take reasonable technical measures to ensure safe mine production.Mine direct current method advanced detection technology is one of the important methods for advanced prediction of the mining face of coal mines.Through COMSOL Multiphysics simulation，this paper analyzes and explores the mine DC advanced detection response of low-resistance geological anomalies in different distribution forms in three-dimensional space.The results show that different distribution patterns of low-resistance geological anomalies in front of the driving face have a great influence on the results of advanced detection by DC method.When the geological anomaly strike is consistent with the survey line，the magnitude of the anomalous response is the highest and the resolution is highest，but the location of the anomaly deviates from the location of the anomaly.The amplitude is the smallest and the anomaly resolution is the lowest，but the located anomalous location coincides with the location of the geological anomaly body，and the anomaly range is the smallest.