Radon exhalation simulation device and radon exhalation rate measurement method

Abstract

The invention discloses a radon exhalation simulation device and a radon exhalation rate measurement method. The radon exhalation simulation device comprises a radon exhalation tank, a radon measuringinstrument and a low frequency vibration module, a uranium-like ore sample is packaged in the radon exhalation tank, a radon collection space is formed in the uranium-like ore sample, a gas inlet ofthe radon measuring instrument communicates with a gas outlet end of the radon collection space, and a gas outlet of the radon measuring instrument communicates with a gas inlet end of the radon collection space; the radon exhalation simulation device further comprises a wind pressure adjustment module for adjusting the wind pressure in the radon collection space, the wind pressure adjustment module comprises an air blower, a blast pipe and an air outlet pipe, the air blower communicates with the gas inlet end of the radon collection space through the blast pipe, the air outlet pipe communicates with the gas outlet end of the radon collection space, and a pressure sensor is arranged in the radon collection space. In the radon exhalation simulation device disclosed by the invention, the wind pressure in the radon collection space is adjusted via the wind pressure adjustment module, the wind pressure is detected by the pressure sensor, the low frequency vibration module is used for applying a low frequency vibration load to a radon exhalation module to simulate the mechanical vibration of a surrounding rock of a roadway of a uranium ore, and the real simulation of the roadway of theuranium ore under a press-in ventilation condition is achieved.

Description

technical field [0001] The invention relates to a radon release environment simulation and radon release test device, in particular to a radon release environment simulation device and a radon release rate measurement method. Background technique [0002] Radon and its daughters are the main natural radioactive sources that endanger human health, and the abnormal precipitation of uranium-containing ores caused by radon due to external conditions is the main safety hazard factor in deep uranium mining; radon gas produced by uranium-containing ores can migrate into In the mine mining roadway, if the ventilation measures of the mining roadway are not adopted properly, it will cause damage to the upper respiratory tract and lungs of underground workers, and even cause lung cancer. Therefore, the radiation protection of radon has been highly valued by the governments of various countries. [0003] Many scientific research institutions and scholars at home and abroad have carried...

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Problems solved by technology

The setting of the sample and the layout of the circuit in this patent cannot truly simulate the radon precipitation in the uranium mine roadway, and the patent only studies the simulation of radon precipitation by low-frequency vibration. Due to the difficulty in controlling the variables in the single factor analysis, the simulation effect is poor, etc. Due to limitations, there is no quantitative study on the influence of comprehensive factors such as ultrasonic vibration, low-frequency vibration, temperature gradient, and pressure gradient on the precipitation of radon in uranium rocks. It is very necessary to carry out the coupling experimental research laboratory of the mechanism of radon precipitation in uranium ore rocks under different pressure gradients, temperatures, ultrasonic vibrations, and low-frequency vibrations

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