Method of searching for hidden uranium mine in granite area

Abstract

The invention provides a method of searching for hidden uranium mine in a granite area. The method comprises: S1, determining a preliminary measurement point in a surveying area; S2, measuring uranium, thorium and potassium contents of a ground gamma-ray energy spectrum, the radon gas concentration of the surface soil or the thermoluminescence intensity of the surface soil, and a uranium component content in the surface soil at a preliminary measurement point; S3, making profile maps and planar contour maps of all measurement parameters as well as an integrated profile map and an integrated planar contour map; S4, determining and setting an abnormal prediction zone; S5, determining a final measurement point in the abnormal prediction zone; S6, measuring uranium, thorium and potassium contents of the ground gamma-ray energy spectrum, the radon gas concentration of the surface soil or the thermoluminescence intensity of the surface soil, and a uranium component content in the surface soil at the final measurement point; S7, making profile maps and planar contour maps of all measurement parameters as well as an integrated profile map and an integrated planar contour map; S8, determining and setting an abnormal prediction zone; and S9, carrying out engineering revealing. With the method provided by the invention, the searching work hit rate and the work efficiency for searching for hidden uranium mine in a granite area are improved and the mine searching cost is lowered.

Description

technical field [0001] The invention relates to the field of geological prospecting, in particular to a method for searching hidden uranium deposits in granite areas. Background technique [0002] Granite-type uranium deposits refer to uranium ore bodies that are genetically related to granite bodies and are produced in or near rock bodies. They are important types of uranium deposits in China. At present, there are many methods for uranium ore prospecting, including geophysical and chemical prospecting methods. The hit rate of ore prospecting using a single method is low, and some methods require a large number of deep sampling work, which is inefficient. Especially in the granite areas with thick weathered soil and well-developed vegetation in the south, due to terrain constraints and coverage of weathered soil, deposit location is more difficult, and the cost of drilling and sampling is higher. Therefore, a fast, accurate, and low-cost comprehensive evaluation method is ...

AI Technical Summary

Problems solved by technology

At present, there are many methods for uranium ore prospecting, including geophysical and chemical prospecting methods. The hit rate of ore prospecting with a single method is low, and some methods require a large number of deep sampling work, which is inefficient

Especially in the granite areas with thick weathered soil layers and well-developed vegetation in the south, due to terrain constraints and weathered soil coverage, deposit location is more difficult, and drilling and sampling costs are higher

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