钻孔是地浸采铀注入溶浸剂和抽出浸出液的通道 ,钻孔涌水量多少直接影响地浸矿山效益和生产成本 ,而钻孔局部扩径方法是降低钻孔成本 ,提高涌孔涌水量的根本途径。在新疆伊宁铀矿现场所作的现场试验表明 ,钻孔局部扩径后 ,单孔抽液量达 6.52 m3/ h,抽液能力提高了 156%。 Drilling is the leaching of uranium impregnated leaching solution and extract the leachate channel, the amount of drilling water inflow directly affects the efficiency and production costs of leaching mines, and the local expansion of the borehole method is to reduce the cost of drilling to increase the amount of water inrush The fundamental way. Field experiments at the site of Yining Uranium Mine in Xinjiang Province show that the single-hole pumping capacity reached 6.52 m3 / h and the pumping capacity was increased by 156% after the local expansion of the borehole.