Sandstone type uranium mine integrated geophysical exploration method

A geophysical exploration, sandstone-type technology, applied in the field of comprehensive geophysical exploration, can solve the problems of lack of selection and analysis, poor matching of geological problems, etc.

Inactive Publication Date: 2017-05-10
BEIJING RES INST OF URANIUM GEOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the actual geophysical exploration of sandstone-type uranium deposits, due to the lack of systematic selection and analysis of different geophysical

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A comprehensive geophysical prospecting method for sandstone-type uranium deposits, comprising the following steps in sequence:

[0023] Step 1. When the buried depth of the basin basement is less than 600 meters, the scope of the research area is less than 500 square kilometers, and the depression area is divided by using regional gravity data with a scale of 1:200,000;

[0024] Step 2: When the buried depth of the basement of the basin is less than 600 meters, the scope of the research area is less than 500 square kilometers, and the ground high-precision magnetic survey with a scale of 1:50,000 is carried out to delineate the boundaries of intrusive rock bodies and determine the favorable areas for uranium mineralization in sedimentary basins;

[0025] In step 3, when the buried depth of the basement of the basin is less than 600 meters, the range of favorable uranium ore-forming areas in the sedimentary basin is less than 10 square kilometers. Conducting audio-freque...

Embodiment 2

[0027] A comprehensive geophysical prospecting method for sandstone-type uranium deposits, comprising the following steps in sequence:

[0028] Step 1. When the buried depth of the basin basement is between 600 and 1,500 meters, the range of the research area is within 500 to 1,000 square kilometers, and the depression area is divided by using regional gravity data with a scale of 1:500,000;

[0029] Step 2: When the buried depth of the basin basement is between 600 and 1,500 meters, the research area is within 500 to 1,000 square kilometers, and the ground high-precision magnetic survey with a scale of 1:100,000 is carried out to divide the boundary of the intrusive rock mass and determine the sedimentary basin Favorable areas for uranium mineralization;

[0030] In step 3, when the buried depth of the basin basement is between 600 and 1,500 meters, the favorable area for uranium mineralization in the sedimentary basin is within the range of 10 to 50 square kilometers, and th...

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Abstract

The invention belongs to the field of an integrated geophysical exploration method and specifically relates to a sandstone type uranium mine integrated geophysical exploration method. The method comprises the following steps: 1, determining a basin depression and uplift zones; 2, dividing a rock boundary so as to determine a favorable uranium mineralization section; and 3, carrying out electromagnetic depth detection, knowing underground geoelectric structure features, and determining sand body spatial distribution and forms facilitating uranium mineralization. By use of such a technical scheme, economic and high-efficiency integrated geophysical exploration means is provided for a basin sandstone type uranium mineralization prospecting region, embedded depth and distribution rules of an underground destination-layers sand body are effectively evaluated, and the method has great realistic significance for geological prospecting work.

Description

technical field [0001] The invention belongs to the field of comprehensive geophysical prospecting methods, and in particular relates to a comprehensive geophysical prospecting method for sandstone-type uranium deposits. Background technique [0002] In the field of sandstone-type uranium deposit exploration, commonly used geophysical exploration methods mainly include gravity, magnetic method, and electromagnetic method. Gravity exploration methods have achieved positive results in solving geological problems such as tectonic unit division and basement fluctuations; It plays an important role in delineating intrusive rocks, demarcating rock mass boundaries and fault structures, especially in the search for uranium and polymetallic minerals in recent years. Among the electromagnetic methods, the audio-frequency magnetotelluric method and the magnetotelluric method are used to detect It is a direct method to understand the distribution and burial depth of favorable ore-formin...

Claims

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Application Information

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IPC IPC(8): G01V11/00
Inventor 喻翔李西德万汉平汪硕
Owner BEIJING RES INST OF URANIUM GEOLOGY
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