Using the multi-frequency technique to detect water-bearing strcture in the roof and floor of coal seam
WANG Xin-wen,ZHXNG Zhong-li,WANG Yi (Xi'an Branch ,CCRI ,Xi'an 710054,China)
We find a kind of technique that could determine the depth of the water-bearing structure in the roof and floor of coal seam using the multi-frequency technique to calculate and to analyse some data got from a coal mine. This technique demonstrate the way to research the location of the water-bearing structure in the roof and floor of coal seam.
【CateGory Index】： P631.3