某铀矿床铀超标水治理工程

Treatment Process for Water With Excess Uranium in a Uranium Deposit

铀超标水治理是辐射环境治理中的难题,某铀矿床铀超标水主要来自坑口水和钻孔水。该退役治理项目采用“打孔注浆封堵→挂网喷护→穿脉内黏土充填坑口封闭”工艺治理坑道围岩涌水点,采用注浆封堵工艺治理钻孔涌水点。工程实施后,通过1个水文地质年的动态观测,治理区排放口水中的核素浓度低于排放限值,实践表明该治理方案可有效治理铀超标水源项,减少铀超标水的产生。

The treatment of water with excess uranium is a difficult problem in radiation environment management.The water with excess uranium in a uranium deposit mainly comes from the pithead water and drilling water whose uranium concentration exceeds the discharge limit.In this decommissioning treatment project,the technology of"drilling grouting and sealing→hanging wire mesh→fill the pithead with clay"is adopted to treat the mine inflow points of tunnel wallrock in the crossing vein,and the grouting and sealing technology is adopted to treat the borehole mine inflow points.After the implementation of the project,through the dynamic observation of a hydrogeological year,the nuclide concentration of the water in the discharge outlet of the treatment area is lower than the emission limit,and the practice shows that the treatment scheme can effectively control the water with excess uranium.