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

A radioactive and deep technology, applied in the field of radioactive geophysical exploration, can solve problems such as abnormal drift, cumbersome process, and inconspicuous deep uranium mineralization information, and achieve the effect of improving deep uranium mineralization information

Active Publication Date: 2019-07-12
BEIJING RES INST OF URANIUM GEOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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

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Embodiment Construction

[0026] The present invention is described in further detail below in conjunction with embodiment.

[0027] The present invention provides a radioactive prospecting method for characterizing deep uranium mineralization information, the method comprising the following steps:

[0028] Step (1) select the exploration work area, and design the measurement grid of the work area;

[0029] Select the Junggar Sedimentary Basin in Xinjiang as the working area, design the measurement grid point line distance as 50m×250m, and form the longitude and latitude coordinates of the design points;

[0030] Step (2) calibrates the gamma energy spectrum measuring system and the activated carbon measuring radon instrument;

[0031] The standard model is used to calibrate the gamma energy spectrum measurement system at the nuclear industry metering station, and the activated carbon radon measuring instrument is calibrated at the nuclear industry metering station using a small radon chamber, and the...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/22G01N23/00G01V5/02
CPCG01N1/2294G01N23/00G01V5/02
Inventor 李必红杨龙泉韩绍阳何中波赵丹
Owner BEIJING RES INST OF URANIUM GEOLOGY
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