为解决浸出矿堆渗透性差、浸出率低的问题,引入激波管试验,并结合渗流力学原理、CT 扫描等手段考察应力波改善堆浸渗透性的效果,采用变水头法对矿柱的渗透性进行了测量.结果表明:激波对堆浸散体介质的孔隙结构起到了松散作用,矿柱孔隙当量直径扩大了32%,孔隙率提高了5.72%,渗透系数增加了3.8~10倍,溶液渗流得到了强化,并体现出一定的时效性;经过激波作用后,矿石浸出率提高了近10%,在反应后期激波提高浸出率的作用更明显.%To improve heap permeability and leaching rate of ore, the shock tube experiment was introduced in the heap leaching. The improved effect of the permeability with the shock wave was examined based on both the seepage mechanics principle and the CT scanning. The results show that shock wave has impact on the pore structure of heap leaching medium, and the equivalent diameter of pillar pore is increased by 32%, the porosity is increased by 5.72%. When the permeability of pillar is measured by the means of variable water head, the permeability coefficient increases 3.8?10 times. The solution seepage which reflects certain timeliness has reinforced. The ore leaching rate increases by nearly 10% due to the function of the shock wave. In the late reaction, the effect of the reinforcement is more apparent.
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