隐伏铜矿元素迁移模拟实验及机理研究

项目名称： 隐伏铜矿元素迁移模拟实验及机理研究

项目编号： No.41203038

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 地球化学

项目作者： 张必敏

作者单位： 中国地质科学院地球物理地球化学勘查研究所

项目金额： 25万元

中文摘要： 随着发现出露矿的难度加大，深穿透地球化学技术必将越来越多地应用到隐伏矿勘查中，元素迁移机理问题作为此类技术的理论基础，一直未得到很好的解释，这已成为制约其发展并推广的瓶颈。考虑到我国铜矿资源相对稀缺，急需在铜矿勘查理论和方法上有所突破。本项目拟在两类景观地区建立隐伏铜矿元素迁移模拟实验监测点，每处埋置多个铜矿模拟迁移柱，通过野外定期采样观测的手段，研究模拟迁移柱上方覆盖层土壤中元素含量和理化性质的垂向变化、模拟迁移柱上方与背景区土壤中元素含量和理化性质的水平变化、气固介质中纳米金属微粒特征、元素含量变化与气候条件及地气流的关系等，并结合已建立的室内模拟迁移柱元素迁移情况，达到揭示隐伏铜矿中元素在不同景观类型条件下的迁移过程及迁移机理的目的。本项目的成功实施将进一步为深穿透地球化学方法的发展打下更坚实的理论基础，对隐伏矿勘查工作的推进和矿产资源问题的解决，具有重要的理论和现实意义。

中文关键词： 隐伏铜矿；元素迁移；模拟实验；迁移机理；纳米微粒

英文摘要： With the discovery of outcropping ore deposits becoming more difficult, deep-penetrating geochemical techniques will increasingly be applied to the exploration of blind deposits. The mechanism of element migration, as the theoretical basis of such technology, has not been well explained, which has become a bottleneck restricting its development and promotion. Considering relative scarcity of copper resources in China, breakthrough on the theories and methods of copper exploration is urgent. This project intends to create monitoring points for simulation experiment of element migration in concealed copper deposits in two types of landscape areas; several simulated migration columns will be buried in each point. Through the methods of observation and sampling regularly in the field, the project will investigate the vertical variation of element contents and physicochemical properties in the overburden soil over the simulated migration columns, the horizontal changes of element contents and physicochemical properties between the upper part of columns and background soil, the characteristics of nano-metal particles in gas-solid media, the relationship of the changes of element contents with climatic conditions and earthgas, et al., and combine the element migration situations of simulated indoor columns established,

英文关键词： Concealed copper deposit；Elements migration；Simulation experiment；Migration mechanism；Nanoparticles