井下氡及氡子体的危害是导致矿工肺癌的主要因素之一。我国许多非铀金属矿山大多也存在氡的危害,井下排氧降氡的问题已日益受到重视,并曾提出过一些较有效的防护方法。但是对这个问题的解决,目前仍处于研究阶段。本文主要根据在云锡井下进行降氡研究取得的初步成果,阐明通风压力分布对控制氡污染的有效性。 Underground radon and radon progeny hazards is one of the main factors leading miners lung cancer. Many non-uranium metal mines in our country are also endangered by radon. The problem of radon reduction by oxygen in underground wells has been paid more and more attention and some more effective protection methods have been proposed. However, the solution to this problem is still at the research stage. This paper mainly based on preliminary results of radon reduction studies conducted in the underground tin yunks to clarify the effectiveness of ventilation pressure distribution to control radon pollution.