用地球物理力法来勘探煤田,几年来在中国已经开展了一定规模的工作,经验在不断积累,技术水平也很快有所提高。煤层在地面下埋藏着,它没有特殊的物理性质可以通道地球物理的现象来直接表达它的存在。至多在电阻率上和围岩有些差别,一般是高电阻率的物质,至于其他物理性质,如磁性,密度的数值,煤层都不特殊。又由于煤层的真实厚度常只占整个围岩岩系厚度的很小部分,这就使煤层在电阻率上也不能在地面上引起地球物理现象。这样,就使地球物理方法(地面的)应用于煤田 Using geophysical methods to prospect coalfields, a certain amount of work has been carried out in China over the past few years. Experience has been continuously accumulated and the technical level has also been raised rapidly. The coal seam is buried under the ground, and it has no special physical properties to express its existence through the phenomenon of geophysical channels. At most resistivity and rock are some differences, generally high-resistivity material, as for other physical properties, such as magnetic, density values, the coal is not special. And because the true thickness of the coal seam usually accounts for only a small part of the thickness of the entire wall rock series, the resistivity of the coal seam can not cause geophysical phenomena on the ground. In this way, geophysical methods (terrestrial) are applied to coal fields