摘要
随着我国核电产业与国防建设对铀资源需求的持续增长,砂岩型铀矿因其规模大、可地浸开采成本低的优势,已成为铀资源勘查的战略重点。本研究通过讨论高密度电法在二连盆地川井地区砂岩型铀矿勘查中的实际应用,对二连盆地川井地区勘查区凹陷特征、构造发育等情况进行解译推断。共施工高密度电法3条剖面G1、G2和G3,并对该方法在川井地区砂岩型铀矿探测中的应用效果进行了分析研究,为地质找矿和综合研究提供了较为可靠的物探依据。结合野外钻探地质资料验证,结果表明:低阻异常区对应氧化-还原过渡带为铀富集有利区,条带状中高阻异常体指示砂体或古河道推断为铀成矿有利部位,垂向低阻带反映断裂构造解释为铀的有效运移通道,三者耦合共同控制该地区铀矿空间定位。
With the increasingly growing demand for uranium resource in China’s nuclear power industry and national defense construction,sandstone type uranium deposits have become a strategic focus for uranium resource exploration due to their large scale and low cost of in-situ leaching extraction.This study discusses the practical application of high-density electrical methods in the exploration of sandstone type uranium deposits in the Chuanjing area of the Erlian Basin.It interprets and infers the characteristics of depressions and structural development in the exploration area.Three profiles G1,G2,and G3 of high-density electrical method were constructed,and the effectiveness of this method in sandstone type uranium exploration in the Chuanjing area was analyzed in this study.The study provides a reliable geophysical basis for geological exploration and comprehensive research.Based on field drilling geological data for verification,the results show that the low resistance anomaly zone corresponds to the oxidation-reduction transition zone,which is a favorable area for uranium enrichment.The strip-shaped medium-to-high resistance anomaly body indicates that the sand body or ancient river channel,which is inferred to be a favorable location for uranium mineralization.The vertical low resistance zone reflects the fault structure,which is interpreted as an effective migration channel for uranium.The coupling of the three factors jointly controls the spatial positioning of uranium deposits in this area.
作者
康阿木古楞
陈松
张超
孙大鹏
吕瑞龙
Kang Amuguleng;Chen Song;Zhang Chao;Sun Dapeng;Lyu Ruilong(Hohhot General Survey of Natural Resources Center,China Geological Survey,Hohhot Inner Mongolia 010010,China;Innovation Base for Gold Exploration Technology in the Northern Margin of North China Carton China Geological Survey,Hohhot Inner Mongolia 010010,China)
出处
《工程地球物理学报》
2025年第4期560-567,共8页
Chinese Journal of Engineering Geophysics
基金
中国地质调查局项目(编号:DD20242746,DD20211549)。
关键词
高密度电法
铀矿勘查
二连盆地
川井地区
high-density electrical method
uranium depositsexploration
Erlian Basin
Chuanjing area
