草桃背铀矿井通风系统专项整治方案及实施效果

The special improvement scheme for ventilation system of Caotaobei uranium mine and its implementation effect

介绍草桃背铀矿井开拓、通风系统与通风管理现状,指出原通风系统存在的入风污染、漏风严重,部分主回风井断面过小、风阻大等问题,提出通风系统专项整治技术和管理措施。整治方案实施后取得显著效果:矿井有效风量利用率大大提高,风量分配合理,井下氡及氡子体浓度合格率由整治前的12.5%上升至88.9%。

The status of mine development,ventilation system and ventilation management in Caotaobei uranium mine is introduced,and problems existing in the ventilation system are pointed out,including enter-air pollution,air leaking,large air resisitance.The special improvement scheme involved with technique and management are proposed for problems.After implementation of the scheme,the effective utilization of air volume has been greatly enhanced,and the allocation of air volume is reasonable.The acceptability rate of radon and its daughter concentrations has risen from 12.5% before implementation of the scheme to 88.9%.