【摘要】 在铀矿井中,氡及其子体对工作人员的危害极大,而通风降氡可为井下工作人员创造一个良好的工作环境,确保井下工人的安全和健康。本文根据某铀矿采场中氡的来源,分别探讨了矿体和围岩暴露表面、爆落矿石和地下水的氡析出量的具体估算方法,并估算出排氡及其子体所需风量,取通风量较大者为采场需风量,通过所得采场需风量计算出采场中氡浓度及其平均氡子体α潜能浓度,再与国家标准规定的控制值进行比较,以判断采场氡及其子体是否达到国家防护标准,从而为矿井通风设计提供依据。更多还原

【Abstract】 In uranium mines,radon and its daughters make great harm to staffs,and reducing radon and keeping ventilation create a good working environment for underground staffs to ensure their safety and health.According to the sources of radon in a uranium mine,this paper respectively calculates the precipitation amount of ore body and surrounding rock exposure surface,the precipitation amount of blasting ore and the precipitation amount of groundwater,and then calculates the required air for the rowing of radon and its daughters and takes the greater ventilation for required air in the mining field.Finally,it calculates the radon concentration and the average radon progeny potential concentration through the required air,and compares them with the control values of the national standard.更多还原