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Method of searching for potential ultra-large sandstone uranium deposit based on remote sensing image

A remote sensing image and ultra-large technology, applied in the field of remote sensing geology, can solve the problems of lack of prospecting technology for sandstone-type uranium deposits, sandstone-type uranium deposits do not have the characteristics of alteration zones and alteration halos, etc.

Active Publication Date: 2019-04-09
BEIJING RES INST OF URANIUM GEOLOGY
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Problems solved by technology

At present, there are many mature technologies for positioning porphyry deposits such as copper, molybdenum, tungsten, tin, and gold using remote sensing technology, but there is a lack of technology for sandstone-type uranium deposits. The main reason is that sandstone-type uranium deposits do not have the Characteristics of alteration zones and alteration halos of traditional porphyry deposits

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Embodiment Construction

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

[0017] The present invention provides a method for searching for potential super-large sandstone uranium deposits based on remote sensing images, which includes the following steps:

[0018] Step 1, use ENVI software to load DEM data, the data type is ASTER DEM, the resolution is 30m, use density segmentation to form a topographic elevation map, and find areas where the terrain as a whole is inclined in one direction from the map.

[0019] Step 2: Use ENVI software to load ASTER and Landsat data, use the ENVI visualization module to carry out visual interpretation, and use the short-wave infrared band of Landsat and ASTER to extract hydroxyl information, identify river channels and paleo-channels, and further search for channels that converge and converge. area;

[0020] Step 3, using the visualization function of ENVI software to trace the channel and paleochannel in the step ...

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Abstract

The invention belongs to the field of remote sensing geology, and particularly discloses a method of searching for a potential ultra-large sandstone uranium deposit based on a remote sensing image. The method is implemented by the following steps: 1, terrain modeling is carried out by utilizing DEM data, and a region with an inclined unidirectionally terrain is searched for; 2, multi-spectral remote sensing data is used for performing river channel or ancient river channel interpretation on the inclined unidirectionally region interpreted in the step 1, and a region with gathered river channels is further searched for; 3, a source region is searched for to an upstream region along the river channels; 4, lithological and alteration mapping is carried out in the source region by utilizing the multi-spectral remote sensing data, and the rock type of the source region and the area of an alteration region are determined; and 5, the source region is a region with peraluminous granite and a wide alteration range, and a region with a gathered water body in a downstream region is judged to be a forming region of the potential ultra-large sandstone uranium deposit. The method has the following beneficial effects: the evaluation work of the uranium deposit can be carried out without limitation of regions and national boundaries.

Description

technical field [0001] The invention belongs to the technical field of remote sensing geology, and in particular relates to a method for searching for potential super-large sandstone uranium deposits based on remote sensing images. Background technique [0002] Uranium ore is the grain of the nuclear industry, and sandstone-type uranium ore is one of the important sources of uranium resources. Remote sensing technology has the advantage of no geographical and national boundaries, and has positive significance for the evaluation of uranium resources across borders and regions. At present, there are many mature technologies for positioning porphyry deposits such as copper, molybdenum, tungsten, tin, and gold using remote sensing technology, but there is a lack of technology for sandstone-type uranium deposits. The main reason is that sandstone-type uranium deposits do not have the Alteration zone and alteration halo characteristics of traditional porphyry deposits. Aiming at...

Claims

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Application Information

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IPC IPC(8): G01N21/25
CPCG01N21/25G01N2021/1793
Inventor 邱骏挺宋继叶
Owner BEIJING RES INST OF URANIUM GEOLOGY
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