The invention provides a method for detecting a deep sand body of a low-resistance coverage area. The method comprises the following steps of in a
uranium metallogenesis prospective area, arranging measuring lines according to an outstanding tectonic direction, wherein the number of drilling holes is higher than or equal with 1, at least one measuring line passes through one known drilling hole, and performing measuring point positioning by means of high-precision GPS and a forest
compass; performing wide-frequency magnetotelluric method measurement by means of a continuous
tensor observing device according to a platform type
electrode arranging method; performing impedance calculation on the acquired data, obtaining visual resistivity and phase information, performing two-dimensional datainversion, drawing an inversion resistivity section view according to an inversion result; according to a known drilling hole
exposure result, performing fine layering on the inversion resistivity section view, and extracting an electric characteristic of the sand-containing sand body; and according to the electric characteristic of the sand body, predicating the distribution range of the deep sand body by means of
artificial intelligence technology such as neural
network method. The method settles problems such as low depth measuring resolution and high sand
body identification difficulty inthe low-resistance coverage area, and realizes an excellent effect in sand body prediction.