有色金属科学与工程2016，Vol.7Issue(4)：140-146,7.DOI:10.13264/j.cnki.ysjskx.2016.04.024
赣南典型离子型稀土矿层入渗试验研究
Experimental study on infiltration of typical ion-adsorption rare-earth ore in southern Jiangxi
摘要
Abstract
Selecting the mining area with frequent surface landslide in the process of in-situ leaching, the infiltration rate of rare earth from two ore blocks in filed was tested based on four common models fitting the water infiltration characteristic. The results show that the whole infiltration process can be divided into three phases: the infiltration rate of 0~45 min is the rapid change stage, the infiltration rate of 45~125 min is slowly change phase and after 125 min the infiltration rate gradually achieves the stability. The fitting effect of Kostiakov is better than the other three models with the average ore initial infiltration rate being 0.113 cm/min, the steady infiltration rate of 0.063 cm/min in the first sample region, the average ore initial infiltration rate of 0.162 cm/min and the steady infiltration rate of 0.101 cm/min in second sample region. The infiltration rate increases with the rise of sand and gravel content and decreases with the rise of clay content. At the same time, the infiltration rate is in the negative correlation with the ore moisture content. Hydraulic conductivity in vertical direction shows a rapid decreasing trend with the increase of depth. When liquid injection intensity is too excessive and far more than the hydraulic conductivity, surface seam liquid can not infiltrate in time, which will lead to the decrease of slope safety factor and the occurrence of surface landslide.关键词
表层滑坡/入渗模型/渗透系数/原地浸矿Key words
surface landslide/infiltration model/hydraulic conductivity/in-situ leaching分类
建筑与水利引用本文复制引用
杨阳,罗嗣海,吕先华,桂勇,王观石..赣南典型离子型稀土矿层入渗试验研究[J].有色金属科学与工程,2016,7(4):140-146,7.基金项目
国家自然科学基金资助项目（51264008）；江西省自然科学基金项目（20151BAB206023，20133ACB20003）；江西省教育厅科技落地计划项目（KJLD14042）；江西省研究生创新专项资金项目 （）
