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A combination method of geophysical and geochemical prospecting for delineating prospecting areas of sandstone-type uranium deposits

A combination method and technology of prospective area, which are applied in the field of geophysical and geochemical prospecting to delineate prospective areas of sandstone-type uranium ore prospecting, can solve the problems of long cycle and high cost, achieve rapid breakthrough, reduce waste, and save money and time.

Active Publication Date: 2020-11-20
BEIJING RES INST OF URANIUM GEOLOGY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Due to the high cost and long cycle of prospecting by drilling, there is an urgent need for a combined method of geophysical and geochemical prospecting that can quickly and effectively identify and locate prospecting areas for sandstone-type uranium deposits

Method used

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  • A combination method of geophysical and geochemical prospecting for delineating prospecting areas of sandstone-type uranium deposits
  • A combination method of geophysical and geochemical prospecting for delineating prospecting areas of sandstone-type uranium deposits
  • A combination method of geophysical and geochemical prospecting for delineating prospecting areas of sandstone-type uranium deposits

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] Taking the implementation in the northeast of the Ordos Basin as an example, a combined method of geophysical and geochemical prospecting for delineating sandstone-type uranium ore prospecting areas provided by the present invention includes the following steps in turn:

[0029] Step 1: Quickly locate sand bodies using shallow seismic.

[0030] After the shallow seismic data were collected and processed on site, based on the analysis of the rock physical properties in the work area, the wave impedance value of 7500 (g / cc*m / s) was used as the boundary value of sandstone and mudstone, and the threshold was defined The calculated lithology inversion results of the shallow seismic section are as follows: figure 1 shown. It can be seen from the figure that the sand body in the lower member of Zhiluo Formation, the main ore-bearing...

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Abstract

The invention belongs to the field of geological exploration of interlayer oxidation zone sandstone type uranium ore, and in particular relates to a geophysical and geochemical exploration combinationmethod for delineating a sandstone type uranium ore prospective area. The geophysical and geochemical exploration combination method disclosed by the invention comprises the following steps of (1), rapidly locating a sand body by utilizing shallow earthquake; (2), roughly delineating the trend of a redox front by utilizing geophysical and geochemical exploration of a stream sediment; (3), delineating a favorable sand body distribution range A, wherein a sand body, which has a certain thickness, good connectivity and steady top and bottom waterproof layers, near the redox front is delineated as the favorable sand body range A; (4), delineating an ore-induced abnormal combination range B by utilizing soil radon measurement and geophysical and geochemical exploration of the stream sediment;and (5), delineating the ore prospective area. By means of the geophysical and geochemical exploration combination method disclosed by the invention, the ore prospective area can be located rapidly and effectively; therefore, drilling can be objective; waste of the unnecessary drilling workload is reduced as much as possible; the money and the time are saved; and fast breaking of sandstone type uranium ore prospecting can be realized.

Description

technical field [0001] The invention belongs to the field of geological prospecting of sandstone-type uranium deposits in interlayer oxidation zones, and in particular relates to a combination method of physical and chemical exploration for delimiting sandstone-type uranium deposit prospecting areas. Background technique [0002] At present, with the breakthrough of "in-situ leaching" mining technology of sandstone-type uranium ore, sandstone-type uranium ore has become an effective resource for economy, easy mining and environmental protection in my country. Among them, the sandstone-type uranium deposit in the interlayer oxidation zone has the characteristics of large-scale ore body, good connectivity, and economical and easy mining. It will be one of the types of sandstone-type uranium deposits that my country will focus on in the future. [0003] With the exploration of sandstone-type uranium deposits in the near-surface and shallow interlayer oxidation zones exhausted, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/30G01V1/40G01N33/24
Inventor 易超张康张兆山吴曲波冯延强
Owner BEIJING RES INST OF URANIUM GEOLOGY
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