论文部分内容阅读
阿库塔(Akouta)铀矿床是法国原子能委员会在1967年发现的,在1977年由Akouta-COMI-NAK矿业公司进行开采(1981年铀矿产量为2300吨)。矿床位于石炭纪河流-三角洲相砂岩中的250m深处(Guezouman砂岩),用地表钻孔控制(网格为50×50 m),采用地下坑道留柱法开采(平硐间距为24×24 m),回采矿柱后用水泥充填。在开采期间,由于采用规则网格法,系统的地质填图便可对主砂岩进行详细沉积学分析,并查明铀矿化、沉积型式以及与沉积物氧化还原状态有关的色染现象之间的关系。色染现象反映了流体作用的结果。沿着区域构造In Azzawa挠曲,这些流体在堆积于砂岩层底部
The Akouta uranium deposit was discovered by the French Atomic Energy Commission in 1967 and was mined by the Akouta-COMI-NAK Mining Company in 1977 (Uranium production was 2,300 tons in 1981). The deposit is located 250m deep (Guezouman sandstone) in the Carboniferous river-delta facies sandstone and is controlled by surface drilling (grid 50 × 50 m) and underground pit retention column method (adit space 24 × 24 m ), Filled with cement after mining pillars. During the mining period, detailed geological analysis of the main sandstone can be carried out by systematic geo-mapping due to the regular grid method and the relationship between uranium mineralization, sedimentary patterns and color stains related to redox state of sediments Relationship. Color stains reflect the result of fluid action. In Azzawa flexures are constructed along the area where these fluids are deposited at the bottom of the sandstone formation