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云南锡业公司所属矿山,由于开采历史长,采区分散,上部存在许多采空区。夏季自然风流下行,带有大量氡和氡子体进入作业区和运输巷道。氡子体浓度超出国家规定标准十倍。七十年代以来,公司投资数百万元增设风机,调整改造通风系统,密闭采空区阻断空区内的氡析出。这些措施收到明显效果,但井下仍有30％的边缘和局部区域不在通风系统控制范围内,不能依靠总体通风有效地控制氡及其子体污染。这就需要采取局部净化技术做为防护手段。本文介绍了净化原理及净化器设计与研制。
Yunnan Tin Company owned mine, due to the mining history is long, mining area scattered, the upper part of many goaf. Summer natural romantic down, with a large number of radon and radon progeny into the operating area and transport lane. Progeny concentrations of radon exceed the national standard of ten times. Since the 1970s, the company has invested millions of dollars in additional fans to adjust and revamp the ventilation system, and closed the mined area to block the precipitation of radon in empty areas. These measures have received significant results. However, 30% of the underground and local areas are not under the control of the ventilation system. Therefore, the overall ventilation can not effectively control the pollution of radon and its daughters. This requires the use of local purification technology as a protective measure. This article describes the purification principle and purifier design and development.