摘要
在介绍标准要求、γ外照射所致有效剂量估算方法、铀矿工作场所空气中铀矿粉尘所致活度浓度及其摄入量估算方法的基础上,从排氡通风设计的角度,提出铀矿井下采场空气中氡子体α潜能浓度设计限值确定的方法和思路,并对有关问题进行讨论。当矿石铀品位较高时,采用过低氡子体α潜能浓度进行采场风量设计和运行控制不具备经济合理性时,应当采取缩短工作人员的暴露时间或工种轮换的管理措施,使采场空气中氡子体α潜能浓度保持在技术经济合理可行的水平上。
Based on the introduction of standard requirements, the estimation methods of gamma external exposure effective dose and uranium mine dust activity concentration and intake, the methods and thoughts of calculating the design limit of radon daughters α potentials energy concentration in the stope ventilation design of uranium mines are put forward, and the relevant problems are discussed. Designing the ventilation capacity and operating the ventilation system by using low radon daughters a potential energy concentration is uneconomical result for the high ore grade. It is necessary to keep the radon daughters α potential energy concentration in the air of stope in a technical and economical level by reducing the radiation worker exposure time or taking shift measures.
出处
《铀矿冶》
CAS
2009年第3期140-145,共6页
Uranium Mining and Metallurgy
关键词
铀矿井
通风
氡子体α潜能浓度
设计限值
uranium mine
ventilation
radon daughters α potential energy concentration
design limit
