(1. 遼寧工程技術大學 安全科學與工程學院，葫蘆島 125105； 2. 北京科技大學 金屬礦山高效開采與安全教育部重點實驗室，北京 100083； 3. 萬寶礦產(chǎn)有限公司，北京 100053)
摘 要: 為解決浸出礦堆滲透性差、浸出率低的問題，引入激波管試驗，并結合滲流力學原理、CT掃描等手段考察應力波改善堆浸滲透性的效果，采用變水頭法對礦柱的滲透性進行了測量。結果表明：激波對堆浸散體介質的孔隙結構起到了松散作用，礦柱孔隙當量直徑擴大了32%，孔隙率提高了5.72%，滲透系數(shù)增加了3.8~10倍，溶液滲流得到了強化，并體現(xiàn)出一定的時效性；經(jīng)過激波作用后，礦石浸出率提高了近10%，在反應后期激波提高浸出率的作用更明顯。
關鍵字: 激波；堆浸；滲透性；浸出率；孔隙結構
（1. College of Safety Science and Engineering, Liaoning Technical University, Huludao 125105, China？ 2. Key Laboratory of High Efficient Mining and Safety of Metal Mines, Ministry of Education, University of Science and Technology Beijing, Beijing 100083, China; 3. Wanbao Mining Limited, Beijing 100053, China）
Abstract: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.
Key words: shock wave; heap leaching; permeability; leaching rate; pore structure
