A radioactive prospecting method for characterizing deep sandstone-type uranium mineralization information

Abstract

The invention belongs to the field of radioactive geophysical exploration in uranium exploration and particularly discloses a radioactive exploration method for characterizing deep sandstone type uranium mineralization information. The radioactive exploration method comprises the following steps: selecting an exploration work area and designing a work area measuring grid; calibrating a gamma energy spectrum measuring system and an activated carbon radon measuring instrument; determining the position of a measuring point on site; measuring the measuring point to obtain the content of uranium U in surface shallow soil; measuring the measuring point to obtain a concentration value of radon Rn; respectively interpolating the U and the Rn into U-0 and Rn-0, sliding the U-0 to averagely generate U-1, sliding the Rn-0 to averagely generate Rn-1, dividing the Rn-1 by the U-1 to generate K-0 and then multiplying the K-0 by the U-0 to generate Rn', wherein the Rn' is calculated radon concentration; dividing the Rn-0 by the Rn' to generate radon concentration and calculated radon concentration ratio raster data R; delineating a deep uranium mineralization information favorable area according to the R. According to the method, the surface information interference can be effectively pressed, and a deep sandstone type uranium mine can be rapidly and directly explored.

Description

technical field [0001] The invention belongs to the field of radioactive geophysical prospecting in uranium ore prospecting, in particular to a radioactive prospecting method for characterizing deep sandstone-type uranium mineralization information. Background technique [0002] Sandstone-type uranium deposits are produced in Mesozoic-Cenozoic basins, and most of them are concealed blind deposits with thick overburden. The strong radioactive anomaly and strong wall rock alteration information of the sandstone uranium ore body experienced layer-by-layer barriers of wall rock and cap rock during the transmission process, and the anomaly information was very weak or even not reflected when it reached the surface. Therefore, sandstone-type uranium deposits cannot Like other types of uranium deposits, it can be directly searched by airborne radiological methods. The existing geophysical and chemical prospecting, radon measurement and deep penetration geochemical methods have ach...

AI Technical Summary

Problems solved by technology

The existing geophysical and chemical prospecting, radon measurement and deep penetration geochemical methods have achieved certain application effects, but there are still many problems. For the radon measurement method, the main problem is that it is interfered by factors such as the surface and meteorology. False anomalies or abnormal drift are serious, and the deep information of the response is not obvious; for deep penetration geochemistry, the main problem is that the measurement period is long, the process is cumbersome, and the deep uranium mineralization information is not obvious

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