地质与勘探2017，Vol.53Issue(5)：960-967,8.
成矿后构造破坏对矿床勘查类型的影响及勘查类型系数优化
Analysis of the Influence of Structural Complexity on the Exploration Type and Optimization of the Exploration Type Coefficient
摘要
Abstract
The current exploration code is based on five geological factors to classify exploration,in which the influence weight of structural complexity is about 10%. Through analysis of multiple types of mineral deposits and exploration experience summary, this work has studied the influence of structural complexity on the type deposit exploration, and found that the influence degree of structural destruction on the classification of ore deposits may be under-estimated. This paper presents a case study of the Xiangtan manganese mine on this subject, which is featured by complicated structure after mineralization and intense destruction of ore bodies. During the exploration, this deposit was classified into type II, and surveyed at a corresponding grid of the project, failing to control ore bodies effectively. If the post-mineralization structural complexity and the actual situation of the ore-body destruction had been fully recognized in advance, then their weights in classification of the survey type should be raised and the mine should be viewed as type III, which are more consistent with the real geological conditions and favorable for effective controlling of ore bodies. As an attempt, this work raised the weight for the mine to 25%, and the exploration type coefficient is changed from 0. 1~0. 3 to 0. 1~0. 9, namely the sums of coefficients of five geological factors for survey types I, II, and III are changed from 2. 5~3. 0, 1. 8~2. 4, 1. 0~1. 7, 2. 2~2. 9, 1. 0~2. 1 into to 3. 0~3. 6, 2. 2~2. 9, 1. 0~2. 1, respec-tively. By such changes, the effect of structural complexity on the exploration type has been adequately considered, which permits to further optimize the type coefficients of mineral deposits, reasonably determine the types of exploration, and better evaluate the degrees of control and prospecting to the mine.关键词
矿床勘查类型/类型系数/地质因素/成矿后构造破坏/湘潭锰矿Key words
type of deposit prospecting/type coefficient/geological factors/post-mineralization structure/structural destruction degree/Xiangtan manganese ore分类
天文与地球科学引用本文复制引用
毛党龙,傅群和,刘敏,周旭林,吴盛..成矿后构造破坏对矿床勘查类型的影响及勘查类型系数优化[J].地质与勘探,2017,53(5):960-967,8.基金项目
国家矿产资源储量技术标准体系建设项目之子课题《重要有色金属与贵金属及稀土稀有矿床合理勘查程度研究》(课题编号:CB2015-2-5)资助. （课题编号:CB2015-2-5）
