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煤田采空区是引起地质灾害的主要因素之一,查明采空区范围对地质灾害的准确评估和预防有着十分重要的意义。瞬变电磁法具有分辨率高、与探测地质体耦合性好、对低阻地质体反应灵敏,而且施工方便、成本低、效率高等特点,是探测煤田采空区位置的最佳方法之一。通过实例,对瞬变电磁法在探测煤田采空区中应用及良好效果进行了分析。
Coal mined-out area is one of the main causes of geological disasters. It is of great significance to find out the extent of the gob area for accurate assessment and prevention of geological disasters. Transient electromagnetic method has the characteristics of high resolution, good coupling with the detecting geological body, sensitive to the low resistivity geological body, convenient construction, low cost and high efficiency. It is one of the best methods to detect the location of the goaf in the coalfield. Through the example, the application of transient electromagnetic method in detecting goaf area and its good effect are analyzed.