An integrated geophysical method for uranium resource exploration in sedimentary basins

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: 2016-06-01
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

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Comparison scheme
Effect test

Embodiment 1

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

[0026] The first step, when the buried depth of the base is less than 500 meters, and the area of ​​the working area is less than 50 square kilometers, the 1:200,000 gravity data can be used to delineate 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, the area of ​​the working area is less than 50 square kilometers, and the 1:50000 aeromagnetic data can be used to detect contact surfaces such as intrusive rock masses within a buried depth of less than 500 meters;

[0028] The third step, when the depth of the basement is less than 500 meters, the working area is less than 3 square kilometers, the seismic acquisition trace is 500, the geophone frequency is 40 Hz, the trace spacing is 10 meters, the sampling rate is 0.25 milli...

Embodiment 2

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

[0031] The first step, when the depth of the base is 501 to 1000 meters, and the working area is within the range of 51 square kilometers to 100 square kilometers, using 1:500,000 gravity data, it is possible to delineate the base with a depth of 500 to 1000 meters. fluctuations;

[0032] The second step, when the buried depth of the base is 501 to 1000 meters, the working area is in the range of 51 square kilometers to 100 square kilometers. Using 1:100000 aeromagnetic data, the buried depth can be in the range of 500 meters to 1000 meters. Detection of contact surfaces such as intrusive rock masses in the interior;

[0033] The third step, when the depth of the basement is 501 to 1000 meters, the working area is in the range of 3 square kilometers to 6 square kilometers, the seismic acquisition channel is 1000, the detector frequency is 10Hz, the distance between the channels is 20 meters, and the samplin...

Embodiment 3

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

[0036] The first step, when the buried depth of the base is greater than 1001 meters, and the area of ​​the working area is greater than 100 square kilometers, the 1:1000000 gravity data can be used to delineate the undulations of the base with a buried depth greater than 1500 meters;

[0037] The second step, when the buried depth of the basement is greater than 1001 meters, the area of ​​the working area is greater than 100 square kilometers, and the 1:100000 aeromagnetic data can be used to detect contact surfaces such as intrusive rock masses within a buried depth of more than 1500 meters;

[0038] The third step: when the basement depth is greater than 1001 meters, the working area is greater than 6 square kilometers, the seismic acquisition trace is 1500, the geophone frequency is 4Hz, the trace spacing is 25 meters, the sampling rate is 2.0 milliseconds, the recording length is 2.0 seconds, and the end...

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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 uranium resource exploration in sedimentary basins by gravity, aeromagnetic and seismic 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 should be carried out in areas with favorable regional geological background, and the accuracy of exploration will be gradually improved to achieve the purpose of geological exploration. However, in the current exploration of uranium resources in sedimentary basins, due to various reasons, there is a lack of systematically designing exploration methods and their corresponding parameters, resulting in a po...

Claims

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Application Information

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Patent Type & Authority Patents(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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