The Experimental Research On The Rules Of Radon Exhalation In Deep Uranium Mine Roadway And High Temperature

Uranium mining in our country is mostly shallow mining. In order to meet the demand of natural uranium, part of the uranium mine has transition to deep mining. The deep mining of uranium mine faces many complicated technical problems. Experts predict the limit depth of the uranium mine mining depends on the acceptable levels of radiation and thermal environment operation conditions of the mine. In order to study the impact of mine thermal environment operation on radon exhalation and deep uranium mine in this paper. The influence of high temperature and high temperature on the radon exhalation rate is carried out on the porous medium radon emanation precipitate affect simulation experiment research. Proposed conforms to the deep uranium well the law of the radon exhalation rate under high temperature environment, for uranium mine deep mining of uranium mine ventilation design to provide the reference.This study is the part of national natural science fund project “three poor coupling mechanism of deep uranium well radon exhalation and line of radon airflow calculation mode research”. By simulating a typical uranium mine, the mining work day abstraction for porous emanation of roadway surrounding rock medium, establish porous emanation in indoor test apparatus, for high temperature deep uranium well radon exhalationrate on dielectric surface under different temperature are discussed in this paper, the influence of the paper's main research content is as follows:(1) The experimental analysis of the porous medium emanation material radium content and medium porosity, according to the principle of model test of the similarity criterion, designed and developed a porous medium radon emanation precipitation test rig, well realize the control of the temperature and the concentration of radon measurement.(2) Through indoor test of the porous surface radon emanation medium under different temperature precipitation, measure and calculate the radon concentration of radon exhalation rate.(3) According to the analysis of experimental data and calculated results, analysis high temperature influence on radon exhalation.