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Uranium element anomaly screening method for sandstone uranium ore soil

A screening method and sandstone type technology, applied in the field of geological exploration, can solve the problems of changing the abnormal shape of uranium, interference of prospecting work, false abnormality, etc., so as to reduce the influence of interference information, reduce the scope of prospecting, and save the cost of prospecting. Effect

Active Publication Date: 2018-06-29
BEIJING RES INST OF URANIUM GEOLOGY
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Problems solved by technology

These factors will greatly change the anomalous form of uranium and cause more false anomalies. If objective anomaly screening is not carried out, it will cause great interference to the prospecting work

Method used

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Embodiment Construction

[0016] The present invention is described in further detail below in conjunction with embodiment.

[0017] A screening method for abnormal uranium elements in sandstone-type uranium deposit soil, comprising the following steps:

[0018] Step 1. Eliminate the interference of the surface landscape, obtain high-resolution remote sensing images of the study area, interpret the types of surface vegetation, and divide the surface landscape of the study area in combination with ground sampling records, and balance the original discrete data between different landscape areas;

[0019] Step 2. Grid the discrete data leveled in step 1, and use the mean value of uranium content plus the sum of twice the mean square error as the lower limit of the anomaly to draw a geochemical anomaly map of uranium elements;

[0020] Step 3: Identify non-mineral abnormal areas caused by human activities, and obtain uranium anomalous areas that exclude human activity interference; specifically, apply high...

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Abstract

The invention belongs to the field of geological survey and particularly relates to a uranium element anomaly screening method for sandstone uranium ore soil. The method comprises the following stepsof 1, eliminating surface landscape interferences; 2, drawing a uranium element geochemical anomaly graph; 3, obtaining a uranium anomaly region after elimination of human activity interferences; 4, obtaining a uranium anomaly region after elimination of terrain interferences; 5, obtaining a uranium anomaly region after elimination of geologic body interferences; and 6, performing grading on the obtained uranium anomaly regions. Through a set of complete anomaly screening process, the influence of interference factors in multiple aspects is quickly eliminated; ore-caused anomaly is extracted;and favorable bases are provided for ore prediction work.

Description

technical field [0001] The invention belongs to the field of geological exploration, and in particular relates to a method for screening abnormal uranium elements in sandstone-type uranium ore soil. Background technique [0002] Sandstone-type uranium deposits are usually covered by thick Quaternary strata, and soil geochemical prospecting to extract deep uranium mineralization information is one of the main methods for sandstone-type uranium deposit exploration. Most of the extracted uranium element anomalies are not mine-induced anomalies, because the uranium elements from deep ore bodies are easily affected by various factors when they are enriched on the surface, including surface landscape differences, surface water erosion, human activities, geological bodies, etc. difference etc. These factors will greatly change the anomalous form of uranium and cause more false anomalies. If objective anomaly screening is not carried out, it will cause great interference to the pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 赵宁博付锦刘涛
Owner BEIJING RES INST OF URANIUM GEOLOGY
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