铀矿上向扇形深孔毫秒延时爆破筑堆与安全

The Uranium Mining up Fan Type Deep-holes and Milli-second Squeezed Blasting for Heap-making and Safety

通过某铀矿床317采场的爆破落矿筑堆工艺研究,在爆破技术上主要取得了上向扇形深孔毫秒延时挤压爆破落矿筑堆研究技术成果,优化爆破参数设计,分段高度由原来的12 m增加到20 m,爆破后矿石块度-150mm粒级产率达到80%以上;在安全上地表民房及建筑物完好无损。试验证明落矿分段高度20 m,采用上向扇形深孔爆破落矿筑堆在技术上是安全可行的,是采场分段爆破技术上的一大突破。

Took a in-site leaching technology research at 317 mining stope of deposit,the investigation result form heap-making by non-electricity milli-second squeeze blasting with fan type deep-holes.Optimizing blasting parameters were designed,the height of blasting was increased form12 to 20 m,80%of the size under 150mm with no any damage to the building on surface.The test proved the technical was safe and reason with up fan type deep-holes blasting heap-making in the height of 20 m.,it is a great technology breakthrough in blasting of uranium mine.