Ancient valley type uranium ore prospecting space positioning method

A space positioning and river valley technology, applied in measuring devices, instruments, geographic modeling, etc., can solve problems such as high cost, single prospecting method, and low efficiency

Inactive Publication Date: 2020-06-09
核工业二0八大队
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Problems solved by technology

In the previous exploration work, the prospecting method of paleo-valley type uranium deposits was single, and only drilling was the main method, whi...

Method used

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Embodiment Construction

[0020] The steps and technical content of realizing this technical method include as follows:

[0021] (1) Spatial positioning of ore-forming geological bodies

[0022] The ore-forming geological body is the paleo-valley sand body. The main technical methods for locating the ore-forming geological body are: collecting data, using the buried depth of the basin basement and the structural zoning map, selecting a "graben-like" sag that is conducive to the development of the paleo-valley, and Carry out comprehensive mapping research in areas with "double-fault" fault structure characteristics developed along the long axis of the sag. At the same time, the controllable source audio frequency magnetotelluric measurement is carried out, combined with the existing drilling data, the sand body of the ancient river valley is located according to the difference in the resistance value of the electrical layer, and the contour map of the sand content rate and sand body thickness of the tar...

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Abstract

The invention relates to the field of sandstone type uranium ore prospecting and particularly relates to an ancient valley type uranium ore prospecting space positioning method. In previous exploration work, an ancient valley type uranium ore prospecting method is single, only drilling engineering is mainly used, efficiency is low, cost is high, and the spatial distribution characteristics of ancient valleys and uranium ore bodies are difficult to find out. The method comprises steps of step 1, spatial positioning of a metallogenic geologic body; 2, controlling a metallogenic structural plane;3, determining a mineralization characteristic mark; and 4, predicting the uranium ore body output space position, and guiding drilling engineering deployment. The method is advantaged in that a setof rapid, accurate and efficient ancient valley type uranium ore exploration space positioning technology is established according to the mineralization geological characteristics of the ancient valley type uranium ore, the sandstone type uranium ore prospecting theory is innovated, the new prospecting field is expanded, ancient valley type uranium ore prospecting is promoted, and the prospectingwork of the type of uranium ore is guided more effectively.

Description

technical field [0001] The invention relates to the field of prospecting for sandstone-type uranium deposits, in particular to a spatial positioning method for prospecting for paleo-valley-type uranium deposits. Background technique [0002] Paleo-valley type uranium deposits are one of the main types of sandstone uranium deposits. The Mesozoic and Cenozoic rift-type basins developed in northern my country, such as the Erlian Basin, have complex sedimentary structure-tectonic evolution and strong segmentation, and their favorable ore-forming lithology , Lithofacies changes greatly, it is difficult to form uranium mineralization controlled by regional interlayer oxidation zone in the traditional sense. During the filling sedimentary evolution of the main body of the basin, the nature of the basin experienced an early transition from fault depression to depression. Under the geological background of the transition process of fault depression, an "inter-construction" paleo-valle...

Claims

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Application Information

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IPC IPC(8): G01V99/00
CPCG01V99/005
Inventor 康世虎乔鹏吕永华
Owner 核工业二0八大队
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