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Comprehensive geophysical method for sedimentary basin uranium resource exploration

A geophysical and basin technology, applied in the field of geophysical exploration, can solve problems such as poor matching of geological problems and poor targeting of geological problems.

Active Publication Date: 2014-03-26
BEIJING RES INST OF URANIUM GEOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the current uranium resource exploration in sedimentary basins, due to various reasons, there is a lack of systematic design of exploration methods and their corresponding parameters, resulting in a poor match between the method and the solution to geological problems. sex is also poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] An integrated geophysical method for uranium resource exploration in a sedimentary basin, comprising the following steps in sequence:

[0026] Step 1. When the buried depth of the base is less than 500 meters, the area of ​​the work area is less than 50 square kilometers, and the 1:200,000 gravity data can be used to outline the undulation of the base with a buried depth of less than 500 meters;

[0027] The second step, when the buried depth of the basement is less than 500 meters, and the working area is less than 50 square kilometers, using 1:50000 aeromagnetic data can detect contact surfaces such as intrusive rock masses within the buried depth of less than 500 meters;

[0028] Step 3. When the buried depth of the base is less than 500 meters, the working area is less than 3 square kilometers, the number of seismic acquisition channels is 500, the geophone frequency is 40 Hz, the channel spacing is 10 meters, the sampling rate is 0.25 milliseconds, the recording len...

Embodiment 2

[0030] The present invention comprises the following steps in turn:

[0031] Step 1. When the buried depth of the base is between 501 and 1000 meters, the area of ​​the work area is within the range of 51 square kilometers to 100 square kilometers, and the base with a buried depth of 500 meters to 1000 meters can be delineated by using 1:500000 gravity data. ups and downs;

[0032] The second step, when the buried depth of the basement is 501 to 1000 meters, the area of ​​the work area is within the range of 51 square kilometers to 100 square kilometers, and the burial depth of 500 meters to 1000 meters can be determined by using aeromagnetic data of 1:100000 Detection of contact surfaces such as intrusive rock mass;

[0033] Step 3: When the buried depth of the basement is 501 to 1000 meters, the area of ​​the work area is within the range of 3 square kilometers to 6 square kilometers, the number of seismic acquisition channels is 1000, the frequency of the geophone is 10 Hz...

Embodiment 3

[0035] The present invention comprises the following steps in turn:

[0036] Step 1. When the buried depth of the base is greater than 1001 meters, the area of ​​the work area is greater than 100 square kilometers, and the 1:1000000 gravity data can be used to outline the undulation of the base with a buried depth greater than 1500 meters;

[0037] The second step, when the buried depth of the base is greater than 1001 meters, the working area is greater than 100 square kilometers, using 1:100000 aeromagnetic data, it is possible to detect contact surfaces such as intrusive rock masses with a buried depth greater than 1500 meters;

[0038] Step 3. When the buried depth of the base is greater than 1001 meters, the working area is greater than 6 square kilometers, the number of seismic acquisition channels is 1500, the frequency of the geophone is 4 Hz, the distance between channels is 25 meters, the sampling rate is 2.0 milliseconds, the recording length is 2.0 seconds, and the ...

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Abstract

The invention belongs to the field of geophysical exploration methods, and particularly relates to a comprehensive geophysical method for sedimentary basin uranium resource exploration. The method includes the following steps: in a sedimentary basin for uranium resource exploration, utilizing gravity data to delineate basement relief and determine a depression area; in the depression area, performing aeromagnetic measuring to determine favorable uranium mineralization regions; on the basis of the favorable uranium mineralization regions, carrying out three-dimensional seismic exploration, and delineating distribution characteristics, structural characteristics and inversion-series physical parameters of layers containing mine meshes. By the method, a technical means is provided for sedimentary basin uranium resource evaluation, economic risk of sedimentary basin uranium resource exploration is lowered, and exploration cycle is shortened.

Description

technical field [0001] The invention belongs to the field of geophysical exploration methods, in particular to a comprehensive geophysical method for uranium resource exploration in sedimentary basins, in particular to a comprehensive geophysical method for gravity, aeromagnetic and seismic exploration in sedimentary basin uranium resource exploration. Background technique [0002] In the exploration of uranium resources in sedimentary basins, in order to achieve good detection results and reduce exploration risks, it is hoped that further geological and geophysical work will be carried out in areas with favorable regional geological backgrounds, and the accuracy of exploration will be gradually improved to achieve the purpose of geological exploration. However, in the current uranium resource exploration in sedimentary basins, due to various reasons, there is a lack of systematic design of exploration methods and their corresponding parameters, resulting in a poor match betw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V11/00
Inventor 徐贵来赵瑞全宁怀玉吴曲波潘自强陈霜李子伟
Owner BEIJING RES INST OF URANIUM GEOLOGY
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