Abstract
Seawater poses a great threat to the Xinli Mine, an undersea gold mine in China. A hydrochemical method was used to assess the risk of sea water inrush into the mine. A detailed hydrochemical survey and sampling were carried out and the concentrations of conservative ions in the mine water were analyzed. Principal component analysis indicated that the potential water inrush channels were located in the hanging wall of the ore-controlling fault. A composite principal component was calculated from the Na+, Cl−, Mg2+, SO4 2−, and K+ concentrations, which reflected the effects of potash feldspathization and cation exchange, to assess the risk of seawater inrush.
Zusammenfassung
Meerwasser stellt eine große Gefahr für die Unterwassergoldmine Xinli in China dar. Die Risiken des Eindringens von Meerwasser in die Mine wurden mittels hydrochemischer Methoden abgeschätzt. Eine detaillierte hydrochemische Erkundung und Probenahme wurde durchgeführt sowie die konservativen Elemente im Bergbauwasser bestimmt. Eine Hauptkomponentenanalyse der hydrochemischen Daten zeigte, dass die Klüfte im Deckgebirge der Vererzung die potentiellen Wege für eindringendes Wasser darstellen. Die Hauptkomponenten wurden aus der Konzentration von Na+, Cl−, Mg2+, SO4 2− und K+ berechnet, welche Effekte einer Kalifeldspatisierung und des Kationenaustausches anzeigen. Daraus wurde das Risiko von eindringendem Meerwasser abgeschätzt.
Resumen
El agua del mar es una gran amenaza en la mina Xinli que es una mina de oro bajo el mar en China. Se utilizó un método hidroquímico para evaluar el riesgo de irrupción de agua de mar en la mina. Se realizó una encuesta hidroquímica detallada y el muestreo correspondiente y se analizaron las concentraciones de iones en el agua de mina. El análisis de componentes principales indicó que los canales para una potencial irrupción de agua estaban localizados en la pared colgante de la falla controladora de la mineralización. El compuesto, que es uno de los componentes principales, fue calculado a partir de las concentraciones de Na+, Cl−, Mg2+, SO4 2− y K+, reflejando los efectos de feldespatización potásica e intercambio iónico, para relevar los riesgos de irrupción de agua de mar.
摘要
新立矿(中国)是一个生产中的海底金矿,海水对新立金矿的生产构成了很大威胁。采用水化学分析法评价了新立金矿海水突水风险。经矿井渗水调查、取样及水化学分析,获取了矿井水常量离子浓度数据。常量离子浓度的主成分分析结果表明新立金矿潜在海水突水通道位于控矿断裂的上盘。Na+、Cl−、Mg2+、SO4 2− 和K+浓度的复合主成分说明矿井水经历了钾长石阳离子交换作用,预示新立金矿有潜在海水突水风险。
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Acknowledgments
This study was financially supported by the Natural Science Foundation of the Hubei Province of China (Grant 2014CFB169), Shanxi Provincial Basic Research Program—Coal Bed Methane Joint Research Foundation (Grants 2015012014 and 2014012001), the National Science and Technology Major Project of the Ministry of Science and Technology of China During “13th Five-Year Plan” (Grants 2016ZX05067001-006, 2016ZX05067001-007 and 2016ZX05043001-001), the Fundamental Research Foundation for the National University (China University of Geosciences—Wuhan, Grant CUGL120258), the National Natural Science Foundation of China (Grant 41172145), and the China Scholarship Council. The authors thank the editors and anonymous reviewers.
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Li, G., Meng, Z., Wang, X. et al. Hydrochemical Prediction of Mine Water Inrush at the Xinli Mine, China. Mine Water Environ 36, 78–86 (2017). https://doi.org/10.1007/s10230-016-0405-5
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DOI: https://doi.org/10.1007/s10230-016-0405-5