| 范剑,苏超,曹朋军,林星,马为,李世斌,王茜,雷清,吴晓飞.地-井方多方位激电测量在铜多金属矿勘查中的应用:以广东玉水铜矿外围勘查为例[J].矿产勘查,2026,17(4):673-681 |
| 地-井方多方位激电测量在铜多金属矿勘查中的应用:以广东玉水铜矿外围勘查为例 |
| Application of multi directional induced polarization survey from ground to well in copper polymetallic ore exploration: A case of exploration in surrounding area of the Yushui copper deposit, Guangdong Province |
| 投稿时间：2024-09-03 |
| DOI：10.20008/j.kckc.202604009 |
| 中文关键词: 井中激发极化法 地-井方式 盲矿体 铜多金属矿 玉水铜矿 |
| 英文关键词: induced polarization method in borehole ground-well method concealed orebody copper-rich polymetallic deposit the Yushui copper mine |
| 基金项目:本文受天津华北地质勘查局科研项目(HK2019-B5)资助。 |
|
| 摘要点击次数: 168 |
| 全文下载次数: 48 |
| 中文摘要: |
| 在金属矿普查和勘探中，井中激发极化法可帮助判断钻孔中已知矿化体或矿体的空间展布，特别是井旁盲矿体。为查明玉水铜矿外围一在施钻孔井旁是否存在盲矿体及空间分布特征，本文开展了地-井多方位激电测井工作，利用井中激电测量数据和各方位曲线特征分析确定了北方位具有最强的极化异常值，由此判断出极化体的方位分布。结合岩矿石电性参数特征、地质及钻孔资料判断该极化异常为矿致异常，通过异常半定量计算推断出盲矿体下底板距离井壁的距离约为 3m，并计算出了其中心平面投影位置，同时结合异常曲线上下开口宽度判断该盲矿体规模较小，由此确定了井旁盲矿体的地下空间分布特征，为指导合理部署地质钻孔提供了科学依据。 |
| 英文摘要: |
| In metal ore prospecting and exploration, the in-well induced polarization method can help deter.mine the spatial distribution of known mineralized bodies or ore bodies in the boreholes, especially those blind orebodies near the well. To investigate whether there is a blind ore body and its spatial distribution characteristics neara drilling hole being drilled on the periphery of the Yushui Copper Mine, this paper conducted multi-directionalgeoelectric logging work in the ground and around the well. By analyzing the polarization anomaly values from thein-well induced polarization measurements and the characteristics of the curves in all directions, the north directionwas determined to have the strongest polarization anomaly value. Thus, the orientation distribution of the polariza.tion body was determined. Combined with the electrical parameters of rocks and minerals, geological and boreholedata, it was judged that this polarization anomaly was a mineral-induced anomaly. Through semi-quantitative calcu.lation of the anomaly, it was inferred that the distance from the bottom of the blind ore body to the well wall was ap.proximately 3 meters, and the central plane projection position was calculated. At the same time, by judging theopening width of the anomaly curve up and down, it was determined that the scale of the blind ore body was small.Thus, the underground spatial distribution characteristics of the blind ore body near the well were determined, pro.viding a scientific basis for guiding the rational deployment of geological boreholes. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|