The coal seams in Handan and Xingtai regions are relatively calm, the sedimentation of the stratum is relatively clear, the conductive characteristics of the lithosphere is relatively uniform in the horizontal; vertical mudstone, sandstone, siltstone, chert and other lithospheric conductive characteristics vary greatly, chert often has high water content. The transient electromagnetic method has strong penetration for high resistance and high resolution for low resistance areas. This feature can provide accurate data for exploring the water-conducting structure of tuff, and then verify it in conjunction with the specific drilling construction to reduce the risk of sudden water in the bottom plate of the recovery surface, seal the water-conducting structure of tuff and ensure the smooth production of the working surface.