摘要
风化壳离子吸附型稀土矿床,是中国赣南地区所特有的一种矿床,在开采工艺上主要采用国家推广的第三代原地浸矿法。以江西省龙南县乡标稀土矿山滑坡为例,在对研究区滑坡进行野外实地调查,并结合该稀土矿开采工艺流程、滑坡区地质环境条件,分析总结了滑坡形成机制,主要表现在两方面:岩土性质、结构、坡型、坡度和高差等内因的影响;降雨、地表径流、地下水和浸矿时的注液加压等外部因素的影响。最后进行了"树根桩+锚杆"组合的复合挡土结构设计,以防治离子型稀土矿山滑坡的发生,最大限度地保证了采场工作人员的生命安全,减少了经济损失,提高了开采效益。
Weathering-Crust-Ionic-Adsorption-Type Rare Earth Deposit, which is rather unique, only exists insouthern part of Jiangxi province, and mainly is exploited with the third generation of in-situ leaching mining meth-od. This paper will take mine landslide standard from Longnan county, in Jiangxi province as an example, by fieldsurvey of the landslide in the research area and consider some elements like the rare earth ore exploiting process,the geological environmental conditions of the landslide area analyzed and summarized the formation mechanism oflandslide which has 2 features： one is the effect of the internal cause of property, structure, slope pattern, slopelength and the geodetic difference of the rock ; the other one is the external cause of the rainfall, direct surface run-off, underground water and the injection fluid pressure during mineral leaching. In the end, designed the soil re-tained structure of the root pile and anchor to avoid the ionic rare earth mining landslides occurring. Utmost to en-sure the staff＇s life, reduce the economic loss and improve the efficiency of the mining.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2015年第6期761-768,共8页
Journal of the Chinese Society of Rare Earths
基金
科技部"十二五"国家科技支撑计划课题子课题(2012BAC11B07)
江西省研究生创新专项资金项目(YC2014-S348)资助
关键词
离子型稀土矿山
原地浸矿
滑坡形成机制
复合挡土结构
ionic rare earth mine
in-situ leaching
landslide formation mechanism
composite soil retaining structure
