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A screening method for abnormal uranium elements in sandstone-type uranium deposit 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, false anomalies, and interference of prospecting work, so as to reduce the influence of interference information, save prospecting costs, and narrow prospecting scope. Effect

Active Publication Date: 2021-04-13
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 exploration, and in particular relates to a method for screening abnormal uranium elements in sandstone-type uranium ore soil. The method includes the following steps: Step 1, remove the interference of the surface landscape; Step 2, draw the geochemical anomaly map of uranium element; Step 3, obtain the uranium anomaly area excluding the interference of human activities; Step 4, obtain the uranium anomaly area after excluding the terrain interference; 5. Obtain the uranium anomaly area excluding the geological body interference; Step 6. Classify the uranium anomaly area obtained in the step 5. The present invention quickly removes the influence of various interference factors through a complete set of anomaly screening process, extracts ore-induced anomalies, and provides favorable basis for ore-forming 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 Patents(China)
IPC IPC(8): G06F30/20
CPCG06F30/20
Inventor 赵宁博付锦刘涛
Owner BEIJING RES INST OF URANIUM GEOLOGY
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