论文部分内容阅读
日本有两个铀矿山:人形峠矿山和东浓矿山,它们为假整合矿床,产于以中生代花岗岩为基底的晚第三纪岩层底部。铀富集见于花岗岩表面的洼地,这些洼地被认为是古的河道。这些矿床的发现是在全国境内进行广泛汽车放射性测量的结果;后来并采用各种勘探方法。详细填图结合地球物理方法提供了有关含矿层范围和基底面形状的资料。进行了十分广泛的钻探。采用了大直径范围的泥浆法,以达到最大限度的岩心回收率,并成功地采集完整的岩心样品,即使是在松散的沉积岩中。坑探工作确定了矿体的最终规模和矿石品位。另一方面,铀矿地球化学和矿物学,花岗岩(破认为是铀的来源)岩石学的基础研究证明对于勘探工作极为有用,因为它们有助于详细了解矿床和矿石的性质。本文提出了这些矿床中的一个矿床的勘查工作实例,并对勘探计划各方面都加以讨论,勘探方法基本上、在不同程度上是综合采用各种传统的勘探方法。
There are two uranium mines in Japan: the humanoid mines and the Dongnong mines, which are fossiliferous deposits and are produced at the bottom of Late Tertiary strata based on Mesozoic granite. Uranium enrichment found in the granite surface depression, these depressions are considered ancient river. The discovery of these deposits is the result of extensive car radioactivity surveys across the country; various exploration methods were subsequently adopted. Detailed mapping in conjunction with geophysical methods provides information on the extent of the ore-bearing layer and the shape of the basement surface. A very extensive drilling was carried out. A large diameter range of mud methods was used to maximize core recovery and successfully collect complete core samples, even in loose sediments. Pit exploration work to determine the final size of the ore body and ore grade. On the other hand, basic research in lithology of uranium geochemistry and mineralogy and granite (which is considered to be the source of uranium) has proven to be extremely useful for exploration as they help to understand the nature of deposits and ores. This paper presents an example of the prospecting of one of these deposits and discusses various aspects of the exploration program. Basically, exploration methods are, to varying degrees, a combination of traditional exploration methods.