瞬变电磁法在煤矿采空区勘探中的应用

The Exploration of TEM in Coal Mined-out Area

黄土高原第四季覆盖层厚,地表冲刷厉害,沟壑分布密集,给采空区勘探带来了诸多不便。瞬变电磁法的大定源回线装置具有一次布线、多点测量的优点,克服了该缺点。另外此方法还具有工作效率快、测量成果分辨率高等优点。高密度电法具有抗干扰能力强,横向、纵向分辨率高的特点,有效地印证了瞬变电磁法的结果,提高了勘探结果的可信度。

The Loess Plateau Area has a thick cover in the fourth quarter, with severe erosion on the surface, and intensive distribution of gully. All of those factors make it inconvenient for the exploration in the gob. The Dading source line equipment of transient elec- tromagnetic data, which has an advantage of once cabling and Multi--point measurements, just overcomes that shortcomings. Besides, this kind of method brings a.n efficient and quick result with high resolution. Transient electromagnetic data has a great anti--jamming capability, and its horizontal and vertical resolution is high enough to verify the results of the transient electromagnetic data, improving the credibility of the exploration＇s results.