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铀矿区域评价工作在七十年代后期得到国外的普遍重视。美国和加拿大作出了进行全国性铀资源评价的决策并付诸实施,为的是掌握铀资源的分布,便于长期规划,开辟新的资源基地。这类铀资源评价计划的特点是战略性强,完成此项工作需要大量投资和较长的时间。其他国家虽然没有这样的全面计划,但有相当多的国家开展了扎实的铀矿区调工作。航空γ能谱测量、航空磁测、水化学测量和遥感是铀矿区域调查中应用得最为广泛的方法,其特点是速度快、成本低。美国和加拿大的铀资源评价计划以航测和水化学方法为主。遥感在铀矿普查方面的应用尽管尚处于积累经验阶段,但由于数据的原始磁带易于获得,图
Uranium mining area evaluation in the late seventies has been generally valued abroad. The United States and Canada have made decisions to implement a national uranium resource assessment and put them into effect in order to grasp the distribution of uranium resources and facilitate long-term planning and opening up new resource bases. This type of uranium resource assessment program is characterized by its strategic nature and requires a substantial investment and long time to complete this task. Although other countries do not have such a comprehensive plan, a considerable number of countries have conducted sound uranium mining work. Aeronautical gamma spectrometry, aeromagnetic surveying, hydrochemical surveying and remote sensing are the most widely used methods for uranium regional surveys and are characterized by high speed and low cost. Uranium resources assessment programs in the United States and Canada are dominated by aerial survey and water chemistry methods. Although the application of remote sensing in uranium census is still in the stage of accumulation of experience, the original tape of data is easy to obtain.