| 半合管钻探工艺在滇东南建水普雄稀土矿床勘查中的应用 |
| 投稿时间：2021-01-19 修订日期：2021-03-30 点此下载全文 |
| 引用本文：张子军,倪光清,瞿亮,等.半合管钻探工艺在滇东南建水普雄稀土矿床勘查中的应用[J].钻探工程,2021,48(10):62-69.ZHANG Zijun,NI Guangqing,QU Liang,et al. Application of the split tube core barrel in the exploration of the Puxiong rare earth deposit in Jianshui， southeast Yunnan[J]. Drilling Engineering, 2021,48(10):62-69. |
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| 基金项目:2017年云南省高新技术产业发展项目计划(201704)；云南省地质勘查(K2016015)。第一作者：张子军,男,1986年12月生,云南省大理市人,地质工程师,长期从事地质矿产调查、矿产勘查工作。电话：13529391013。E-mail：562337090@qq.com通信作者：倪光清,男,1975年10月生,云南省永胜县人,高级工程师,长期从事钻探工程、研究及管理工作。电话：13888558448。E-mail：1213835731@qq.com |
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| 中文摘要:滇东南建水普雄稀土矿是一个超大型风化壳离子吸附型稀土矿床，矿体赋存于长岭岗碱性岩体的全风化层和半风化层中。不同于花岗岩风化壳离子吸附型稀土矿，该矿品位高，厚度大，用一般的浅井和赣南钻等取样工程无法揭穿稀土矿体。本文介绍了建水普雄矿区用半合管钻探工艺和浅井工程在相邻位置的施工情况。根据相同的取样层位和样品长度，对比了矿体的品位变化情况，利用品位的相对误差和正负偏差进行了统计，结果表明，单一对应样品品位相对误差合格率为100%；品位<0.07%的正偏差样品占样品总数的78.57%，负偏差样品占样品总数的21.43%；品位≥0.07%的正偏差样品占样品总数的52.17%，负偏差样品占样品总数的47.83%，正负偏差在可控范围内；单工程平均品位相对误差合格率为100%。说明半合管钻探工艺能够有效地应用于风化壳离子吸附型稀土矿勘查，实现资源评价。 |
| 中文关键词:离子吸附型稀土矿 半合管钻具 植物胶 小泵量 底喷钻头 滇东南建水普雄 |
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| Application of the split tube core barrel in the exploration of the Puxiong rare earth deposit in Jianshui， southeast Yunnan |
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| Abstract:The Jianshui Puxiong rare earth deposit in southeast Yunnan is a super-large weathered crust ion adsorption rare earth deposit discovered and identified by the No.209 Geological Team，Geological Bureau of Yunnan Nuclear Industry. The ore body occurs in the fully weathered layer and semi-weathered layer of the Changlinggang alkaline rock body. The ore has high grade and large thickness which is different from the ion-adsorbed rare earth ore in the weathered granite crust； thus， conventional shallow wells and the Gannan drills cannot be used to expose the rare earth ore body. In this paper， the split tube core barrel and the construction of shallow wells in adjacent locations are used to compare the grade changes of the ore body in the Jianshui Puxiong mining area for the same sampling layer and sample length with calculation of the relative error， and positive and negative deviation of the grade. The results show that the relative error qualification rate of a single corresponding sample is 100%； the samples with grade positive deviation <0.07% account for 78.57% of the total number of samples，while those with grade negative deviation account for 21.43% of the total number of samples. The samples with grade positive deviation ≥0.07% account for samples 52.17% of the total，while those with negative deviation account for 47.83% of the total number of samples， indicating positive and negative deviations within the controllable range. The single project average grade relative error qualification rate is 100%. It shows that the split tube core barrel can be effectively applied to the exploration of weathered crust ion-adsorbed rare-earth minerals to realize resource evaluation. |
| keywords:ion adsorption type rare earth ore split tube tool vegetable glue small pump volume bottom jet drill bit Jianshui Puxiong in southeast Yunnan |
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