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Onsite multi-parameter coal field radioactive radiation environment quick survey and evaluation method

A radiation environment, multi-parameter technology, applied in radiation measurement, X/γ/cosmic radiation measurement, measurement devices, etc., can solve the problems of multi-parameter evaluation of unfavorable radiation environment, single measurement parameter, and high cost

Inactive Publication Date: 2017-09-08
核工业二一六大队
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Problems solved by technology

The laboratory analysis method has high precision, but the work cycle is long, the sample is easy to be polluted, and the cost is high, which is not conducive to timely evaluation of the radioactive radiation indicators of the coal field
On-site measurement currently mainly monitors environmental radioactive radiation through on-site measurement of gamma radiation dose rate, which is timely, but the measurement parameters are relatively single, which is not conducive to multi-parameter evaluation of the radioactive radiation environment

Method used

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  • Onsite multi-parameter coal field radioactive radiation environment quick survey and evaluation method
  • Onsite multi-parameter coal field radioactive radiation environment quick survey and evaluation method
  • Onsite multi-parameter coal field radioactive radiation environment quick survey and evaluation method

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Embodiment Construction

[0031] A method for quickly investigating and evaluating the radioactive radiation environment in a coal field described in the present invention will be further described in conjunction with specific examples below.

[0032] Use multi-channel gamma energy spectrometers on the ground or in drilling with qualified instrument performance to measure the nuclide content of uranium, thorium, and potassium in the coal field; convert the uranium, thorium, and potassium nuclide content in the coal field according to the conversion coefficient of the radionuclide content and the activity concentration unit on site. Potassium activity concentration; on-site calculation of gamma radiation dose rate based on the activity concentration of uranium, thorium, and potassium in the coal field; on-site estimation of the effective dose equivalent of gamma radiation to residents in the coal field environment based on the gamma radiation dose rate; finally, the coal field is completed with the above ...

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Abstract

The present invention provides a method for quickly investigating and evaluating the radioactive radiation environment of a coalfield with multiple parameters on site, which uses a multi-channel gamma energy spectrometer on the ground or in a well to measure natural uranium, uranium, The nuclide content of thorium and potassium and the total radioactivity of gamma can be used to calculate the activity concentration of uranium, thorium and potassium in the coal field by using the conversion coefficient of the radionuclide content and the activity concentration unit; according to the activity concentration of uranium, thorium and potassium in the coal field On-site calculation of gamma radiation dose rate; on-site estimation of the effective dose equivalent of coal field environment gamma radiation to residents based on gamma radiation dose rate; finally, this technology can replace laboratory analysis and on-site gamma radiation dose rate measurement, and provide uranium, thorium, Nuclide content of potassium, activity concentration of uranium, thorium, and potassium, environmental gamma radiation dose rate, effective dose equivalent of gamma radiation to residents, in order to achieve rapid, economical and multi-parameter completion of coal field radioactive radiation environmental investigation and evaluation.

Description

technical field [0001] The invention relates to a method for investigating and evaluating the radioactive radiation environment, in particular to a method for rapidly investigating and evaluating the radioactive radiation environment of a coal field with multiple parameters on site. Background technique [0002] In addition to natural radiation sources and radionuclides, human beings receive radioactivity. The development of human science and technology has increased the chance of receiving natural and artificial radiation exposure, and the development of science and technology is mainly driven by the development of energy based on coal resources. Coal resource is a complex mixture of organic matter and inorganic minerals. It is an important resource. Almost all elements on the earth can be found in coal, and uranium, which is called "associated element", is no exception. The radioactive pollution of coal to the environment has extremely important biological and hygienic sig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/167
CPCG01T1/167
Inventor 杨镜明魏周政陈晓冬王浩臣李秋实
Owner 核工业二一六大队
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