高分辨电法在承压水上开采相似模拟中的应用
Application of High-resolution Electrical Apparatus on Confined Water Mining Similar Simulation
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摘要: 基于煤层底板破坏情况与岩层电阻率变化的关系，在承压水上开采的相似模拟实验中，通过引入高分辨电法仪对底板岩层的电阻率进行实时测量，根据电阻率的变化情况来推断底板的破坏情况，寻找突水点，预测突水位置。通过对比开采前后的电阻率等值线图发现其电阻变化能够反映底板的裂隙演化规律且与现场观测大致吻合。这表明，通过监测岩层底板电阻率的变化来监测底板的破坏情况是可行的。Abstract: Based on the relation between the destructive condition of coal seam floor and the change of rock strata resistivity, high-resolution electric device is used to carry out real-time measurements for the resistivity of floor rock strata in the similar simulation experiment about confined water mining. Though the change of resistivity, it can deduce the destructive condition of floor, find the water inrush point and predict the water inrush position. By comparing resistivity isopleths map before and after the mining, it obtains that its resistance change can reflect the floor crack evolution law and it is in accordance with the field observation roughly. This indicates that it is feasible to monitor the destructive condition of floor by monitoring the resistivity change of its rock strata floor.
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Keywords:
- similar simulation /
- high-resolution electrical apparatus /
- confined water /
- floor /
- contour
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