Geophysical and geochemical exploration combination method for delineating sandstone type uranium ore prospective area

A combination method and technology of prospect area, applied in the field of geophysical and geochemical prospecting combination to delineate prospect area of ​​sandstone-type uranium ore, can solve the problems of high cost and long cycle, and achieve the effects of reducing waste, making breakthroughs quickly, and saving money and time.

Active Publication Date: 2019-05-10
BEIJING RES INST OF URANIUM GEOLOGY
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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

Method used

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  • Geophysical and geochemical exploration combination method for delineating sandstone type uranium ore prospective area
  • Geophysical and geochemical exploration combination method for delineating sandstone type uranium ore prospective area
  • Geophysical and geochemical exploration combination method for delineating sandstone type uranium ore prospective area

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

[0028] Taking the implementation in the northeastern part of the Ordos Basin as an example, the geophysical and geochemical prospecting combination method provided by the present invention for delineating the prospecting prospects of sandstone-type uranium deposits includes the following steps in sequence:

[0029] Step 1: Use shallow earthquakes to quickly locate sand bodies.

[0030] After collecting shallow seismic data on site and performing data related processing, based on the analysis of petrophysical properties in the work area, the wave impedance value of 7500 (g / cc*m / s) is used as the boundary value of sandstone and mudstone, which is defined by the threshold The lithological inversion results of the shallow seismic section are calculated as figure 1 Shown. It can be seen from the figure that the sand bodies of the lower part of Zhiluo Formati...

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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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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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