A three-dimensional spatial location prediction method for volcanic rock-type uranium deposits
A technology of three-dimensional space and prediction method, which is applied in the field of uranium ore exploration and can solve the problems of low uranium ore exploration accuracy and difficult positioning of deep volcanic rock-type uranium deposits.
Active Publication Date: 2021-11-30
BEIJING RES INST OF URANIUM GEOLOGY
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[0004] The purpose of the present invention is to address the deficiencies in the prior art, and provide a three-dimensional spatial location prediction method for volcanic rock-type uranium deposits, which is used to solve the problem of uranium deposits in areas with complex ore-forming environments due to the use of plane prediction methods in existing uranium deposit exploration techniques. Technical problems of low accuracy and difficult positioning of deep volcanic rock-type uranium deposits
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[0041] Step 1. Obtain geophysical and geochemical prospecting data in the work area:
[0042] Select the Xiangshan Basin, collect known ore surface data, and obtain geophysical and geochemical prospecting data through actual measurement. Carry out high-precision physical and chemical prospecting in the Xiangshan Basin at a scale of 1:50,000, mainly including audio-frequency magnetotellurics (AMT), high-precision magnetic methods, radon gas measurements, gamma energy spectroscopy measurements, and soil geochemical measurements. The direction of the physical and chemical detection line is NW313°, the line distance is 500m, and the point distance is 100m. A total of 51 measurement sections are designed. In Heyuanbei, Julong'an, Zoujiashan and Yunji, four key work areas are encrypted to a line distance of 100m and a point distance of 50m. Through data processing, basic geophysical and geochemical maps of the Xiangshan Volcanic Basin and key work areas have been formed. , K), ano...
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The invention belongs to the technical field of uranium ore exploration, and in particular relates to a method for three-dimensional spatial positioning and prediction of volcanic rock type uranium ore. Step 1, obtaining geophysical and chemical prospecting data in a work area; Step 2, delineating radioactive anomalies, geochemical element anomalies and high magnetic anomalies; 3. Perform intersection analysis on the delineated geophysical and geochemical abnormal areas and known ore body surfaces; Step 4: Data normalization processing to obtain comprehensive information scores; Step 5: Delineate comprehensive information score abnormal areas; Step 6: Obtain resistance According to the audio magnetotelluric sounding data, delineate the low-resistivity anomaly area and the abrupt change area of resistivity; Step 7: Carry out three-dimensional positioning prediction of uranium mineralization space. Based on the geophysical and geochemical abnormality, the method of the invention realizes the three-dimensional spatial positioning prediction of volcanic rock type uranium deposits by integrating the deep uranium mineralization information and the ore-forming environment, and provides technical support for deep volcanic-type uranium deposit exploration and resource prediction.
Description
technical field [0001] The invention belongs to the technical field of uranium ore exploration, and in particular relates to a three-dimensional spatial location prediction method for volcanic rock type uranium ore. Background technique [0002] The volcanic rock-type uranium deposit is an important hydrothermal uranium deposit in my country, and the shallow resources of this type of uranium deposit have been basically identified; due to the complex ore-forming environment in the deep part, there are still many technical "bottlenecks" in the exploration of deep uranium resources , resulting in low accuracy of deep uranium deposit positioning and resource forecasting. In terms of ore-forming location prediction of volcanic rock-type uranium deposits, the existing technologies at home and abroad mainly delineate favorable ore-forming areas based on radioactive anomalies and geochemical element anomalies, which are basically plane predictions, but with the advancement of science...
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IPC IPC(8): G01V11/00
CPCG01V11/00
Inventor 李子颖程纪星刘祜李必红吴国东
Owner BEIJING RES INST OF URANIUM GEOLOGY