高频电磁测深法在内蒙古某盆地铀矿勘查中的应用研究

发布时间：2018-02-11 21:23

本文关键词： 高频电磁测深 EH4 铀矿勘查盆地　出处：《东华理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：随着我国环境污染问题的日益突显,迫切需要更新能源结构。核能的开发利用,为我们提供一种新的契机,而作为主要核燃料的铀,其勘探开发就显得极为迫切。如何利用地球物理方法进行深部铀资源勘查,是当前研究的热点之一。高频电磁测深法(EH4)自上世纪引入国内以来,经过近三十年的发展,在我国的各类矿产的勘查中发挥了重要的作用。本文依托内蒙古某盆地铀矿勘查项目,利用EH4开展高频电磁法勘查,解决研究内沉积盆地找矿目的层结构及构造形态等问题。在充分收集勘查区区域地质、已有物探资料的基础上,通过对采集数据的处理和解释,定性分析划分了电性层,对比分析电性层与地层岩性的对应关系,建立了该区地质解释标志,在此基础上对实测剖面的反演电阻率断面进行了地质推断解释。分析了该盆地盖层的结构特征,推断解释出断裂构造3条,并分析了构造格局特征、查明了控矿位置及地层特征,为研究区铀矿找矿工作部署提供了重要的参考依据。
[Abstract]:With the increasingly prominent environmental pollution problem in China, the urgent need to update the energy structure, nuclear energy development and utilization, provide us with a new opportunity, and as the main nuclear fuel uranium, How to make use of geophysical methods to explore deep uranium resources is one of the current research hotspots. High frequency electromagnetic sounding method (EH4) has been developed for nearly 30 years since it was introduced into China in 0th century. It has played an important role in the exploration of all kinds of mineral resources in our country. Based on the uranium exploration project of a basin in Inner Mongolia, this paper uses EH4 to carry out high frequency electromagnetic exploration. In order to solve the problems of studying the structure and structure of the ore-prospecting target layer in the inner sedimentary basin, on the basis of fully collecting the regional geology in the exploration area and existing geophysical data, through processing and interpreting the collected data, the electric layer is qualitatively analyzed and divided. The corresponding relationship between electric layer and stratigraphic lithology is analyzed, and the geological interpretation mark in this area is established. On the basis of this, the inversion resistivity section of measured section is interpreted by geological inference, and the structural characteristics of the caprock in the basin are analyzed. Three fault structures are inferred and interpreted, and the structural pattern characteristics are analyzed. The ore-controlling position and stratigraphic characteristics are identified, which provides an important reference for uranium prospecting in the study area.
【学位授予单位】：东华理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P631.325;P619.14

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