A correction method for the effect of atmospheric radon on vehicle-mounted gamma spectrum
A technology of gamma energy spectrum and atmospheric radon, which is applied in the field of vehicle-mounted gamma energy spectrum exploration to achieve the effect of improving quality and correcting the influence of atmospheric radon
Active Publication Date: 2017-02-22
BEIJING RES INST OF URANIUM GEOLOGY
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For vehicle-mounted gamma-ray spectroscopy measurements, the corresponding correction method for the influence of atmospheric radon has not been reported
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[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0031] A kind of vehicle-mounted gamma energy spectrum atmospheric radon influence correction method provided by the invention comprises the following steps:
[0032] Step (1): Build a correction model for the influence of atmospheric radon
[0033] The atmospheric radon influence correction model is composed of a car, a vehicle-mounted gamma spectrometer, and a portable continuous automatic α radon measuring instrument.
[0034] The car adopts the car with good off-road performance and no radioactive pollution in the prior art. The vehicle-mounted gamma energy spectrometer requires that the instrument’s scintillation detection crystal (the crystal material is thallium-doped sodium iodide) has a volume of at least 8L, has a GPS positioning system, and can display the track of the measuring point, the content of uranium, thorium, and potassium...
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Abstract
The invention belongs to the field of uranium exploration, and particularly discloses a vehicle-mounted gamma energy spectrum atmospheric radon effect correction method. The method includes the steps that an atmospheric radon effect correction model is built; the uranium content and the radon concentration are measured at fixed points and obtained; data obtained through fixed-point measurement are converted to obtain new uranium content data; the new uranium content and radon concentration data columns are combined to form an EXCEL file containing three columns of data of time, radon concentration and uranium content; the data in the file are subjected to linear fitting, and a correcting coefficient k is determined; mobile continuous point measurement is performed, continuous measurement time and continuously-measured uranium content are obtained, and the data are output and saved in the EXCEL file format; vehicle-mounted gamma energy spectrum measurement data are output and saved in the EXCEL file format, continuous measurement time, longitude and latitude, and uranium content data are selected to form a new file, and the new file is saved in the EXCEL file format; CU<Rn> affected by atmospheric radon is obtained; data with the atmospheric radon effect corrected are obtained. The method can effectively correct atmospheric radon effect in vehicle-mounted gamma energy spectrum data.
Description
technical field [0001] The invention belongs to the technical field of vehicle-mounted gamma energy spectrum exploration in uranium ore exploration, and in particular relates to a correction method for the influence of atmospheric radon on vehicle-mounted gamma energy spectrum. Background technique [0002] With the discovery of the Daying uranium mine in my country, the search for sandstone-type uranium deposits has once again become a hot spot for uranium exploration. However, most of the sandstone-type uranium deposits are blind mines with weak surface information, so it is difficult to find ore. Drilling is the best method. Straightforward approach, but the enormous cost and waste associated with extensive drilling is neither economical nor necessary. At present, gamma energy spectrum exploration is still a relatively economical and effective method, such as airborne gamma energy spectroscopy, vehicle gamma energy spectroscopy, and ground gamma energy spectroscopy. Vehic...
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IPC IPC(8): G01N23/00G01V5/12
Inventor 李必红陆士立韩绍阳
Owner BEIJING RES INST OF URANIUM GEOLOGY