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

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...

AI Technical Summary

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

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