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Tracing U Mobility in Deep Groundwater Using Ra Isotopes 利用Ra同位素追踪地下水中铀的迁移率
Procedia Earth and Planetary Science
Pub Date : 2017-01-01 DOI: 10.1016/J.PROEPS.2016.12.122
Lindsay Krall, L. Auqué, E. Tullborg, J. Suksi, G. Trezzi, J. García-Orellana, P. Andersson, D. Porcelli
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引用次数: 1
Metal/loid Release from Cyanidation Wastes in Response to Rainfalls 降雨对氰化废物中金属/样物质释放的影响
Procedia Earth and Planetary Science
Pub Date : 2017-01-01 DOI: 10.1016/J.PROEPS.2016.12.110
C. R. Cánovas, F. Macías, C. González, R. Pérez-López, J. Nieto
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引用次数: 1
Porosity and Permeability Evolution Induced by Precipitation of Silica under Hydrothermal Conditions 热液条件下二氧化硅沉淀诱导的孔隙度和渗透率演化
Procedia Earth and Planetary Science
Pub Date : 2017-01-01 DOI: 10.1016/j.proeps.2016.12.046
Atsushi Okamoto , Ryo Yamada , Hanae Saishu , Noriyoshi Tsuchiya

Water-rock interaction provides significant influences on evolution of hydrological properties within the crusts. Especially, dissolution and precipitation of silica in fractures play essential roles on permeability evolution. In this study, we conducted hydrothermal-flow through experiments on silica precipitation within porous media (alumina inner tube packed with alumina balls) for investigating how a fracture is clogged by silica precipitation. We used high Si supersaturated solution for precipitation under vapor (390 °C and 20 MPa) or supercritical condition (420 °C and 30 MPa), and the porosity structure was examined by X-ray CT. Under the vapor condition, fine-grained quartz was nucleated and immediately deposited on the bottom. In contrast, under the supercritical condition, spherical silica particles, which are composed of opal-A, opal-C and quartz, were formed in fluids, transported and covered the surface of alumina balls uniformly. In the latter case, a characteristic fluid pressure (permeability) oscillation was observed; which is probably explained by repeated clogging and break of pore throats.

水岩相互作用对地壳内部水文性质的演化具有重要影响。特别是裂缝中二氧化硅的溶解和沉淀对渗透率的演化起着至关重要的作用。在这项研究中，我们对多孔介质(填充氧化铝球的氧化铝内管)中的二氧化硅沉淀进行了热液流动实验，以研究二氧化硅沉淀如何堵塞裂缝。采用高硅过饱和溶液在蒸汽(390°C, 20 MPa)和超临界(420°C, 30 MPa)条件下进行沉淀，并通过x射线CT检测孔隙结构。在蒸汽条件下，细晶石英立即成核沉积在底部。而在超临界条件下，由蛋白石a、蛋白石c和石英组成的球形二氧化硅颗粒在流体中形成，均匀地运移并覆盖在氧化铝球表面。在后一种情况下，观察到特征流体压力(渗透率)振荡;这可能是由于孔喉反复堵塞和破裂造成的。
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引用次数: 5
Learning from nature: Solvothermal crystallization of zirconium in volcanic ejecta and its relevance for technical applications 向自然学习:火山喷出物中锆的溶剂热结晶及其与技术应用的相关性
Procedia Earth and Planetary Science
Pub Date : 2017-01-01 DOI: 10.1016/J.PROEPS.2016.12.145
D. Aßbichler, D. Müller, S. Heuss-Aßbichler
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引用次数: 1
Equilibrium of Different Water Types of the Tomsk Region, Western Siberia, with Carbonate and Aluminosilicate Minerals 西伯利亚西部托木斯克地区不同水类型的平衡与碳酸盐和铝硅酸盐矿物
Procedia Earth and Planetary Science
Pub Date : 2017-01-01 DOI: 10.1016/J.PROEPS.2016.12.181
O. Naymushina
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引用次数: 2
Weathering of Zinc-(Zn)-bearing Mine Wastes in a Neutral Mine Drainage Setting, Gunnerside Gill, Yorkshire 含锌(Zn)矿山废弃物在中性矿井排水环境中的风化作用，约克郡Gunnerside Gill
Procedia Earth and Planetary Science
Pub Date : 2017-01-01 DOI: 10.1016/j.proeps.2016.12.056
C. Tame , K.A. Hudson-Edwards , H.A.B. Potter

Numerous areas throughout the world are affected by circum-neutral pH, low iron (Fe) drainage with high concentrations of zinc (Zn) arising from discharges from, and weathering of, mine wastes. Gunnerside Gill, a small upland tributary in the headwaters of the River Swale in Yorkshire, is such a site affected by historic lead and zinc mining. The aim of the study is to assess the controls on Zn mobilisation from the mine tailings and floodplain sediments to the river water through a column leaching experiment. Sphalerite has been identified as the primary Zn mineral in the bedrock within Gunnerside Gill. However, there is more evidence of secondary phases of Zn were including Fe oxides and phosphates present within the samples and the BCR data suggests it is these phases that appear to be undergoing the majority of the Zn dissolution.

世界各地的许多地区都受到周围中性pH值、低铁(Fe)排放和高浓度锌(Zn)的影响，这些排放是由矿山废物的排放和风化引起的。Gunnerside Gill是约克郡斯维尔河(River Swale)源头的一个小高地支流，就是这样一个受历史上铅锌矿开采影响的地方。本研究旨在通过柱淋试验，评价锌从尾矿和漫滩沉积物向河水中运移的控制措施。闪锌矿是Gunnerside Gill矿区基岩中的主要锌矿物。然而，有更多的证据表明，锌的次级相包括铁氧化物和磷酸盐存在于样品中，BCR数据表明，这些相似乎经历了大部分锌的溶解。
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引用次数: 7
Modelling Sulfide Fluxes and Cu Canister Corrosion Rates in the Engineered Barrier System of a Spent Fuel Repository 在乏燃料储存库的工程屏障系统中模拟硫化物通量和铜罐腐蚀速率
Procedia Earth and Planetary Science
Pub Date : 2017-01-01 DOI: 10.1016/J.PROEPS.2016.12.183
P. Wersin, P. Alt‐Epping, M. Pękała, P. Pitkänen, M. Snellman
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引用次数: 3
Investigating Potential Additional Sources of Groundwater Flow into a Defined Watershed 调查流入指定流域的潜在额外地下水来源
Procedia Earth and Planetary Science
Pub Date : 2017-01-01 DOI: 10.1016/J.PROEPS.2016.12.138
A. Watson, J. Miller, W. Clercq
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引用次数: 1
Porewater Chemistry in Claystones in the Context of Radioactive Waste Disposal 放射性废物处理中的粘土孔隙水化学
Procedia Earth and Planetary Science
Pub Date : 2017-01-01 DOI: 10.1016/J.PROEPS.2016.12.182
P. Wersin, D. Traber, U. Mäder, M. Mazurek, H. Waber, D. Rufer, T. Gimmi, V. Cloet
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引用次数: 9
Disparity of Adsorbed Arsenic Species and Fractions on the Soil and Soil Colloids 土壤和土壤胶体吸附砷的种类和组分差异
Procedia Earth and Planetary Science
Pub Date : 2017-01-01 DOI: 10.1016/J.PROEPS.2016.12.172
Jie Ma, Huaming Guo, M. Lei
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引用次数: 5
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