摘要
利用热质流体输运动力学模型与石英溶解、沉淀的化学动力学模型,以及多孔介质的本构关系建立了一个组分浓度、热质输运、反应动力学耦合模型。针对银山多金属矿床成因有关成矿模型,假设银山多金属矿床形成除与浅部次火山岩岩枝的侵入有关外,在其底部可能还存在一个大的隐伏岩体,并模拟了成矿系统的温度场、孔隙流体组分(硅酸)浓度场、流场(流函数)和二氧化硅沉淀量。初步结论是:对于银山多金属矿床这样大型、特大型矿床,一种合理的情况是下部可能存在隐伏的大岩基,其所提供的巨大热能和矿质驱使整个热液成矿系统的长期活动,并使得大矿量聚集成为可能。
We have made a dynamic model about the coupling of heat and mass transportation and chemical interaction, by the dynamic model of heat and mass transportation, chemical interaction in porous media, and the porosity and permeability models on a spherical close pack arrangement of grains. According as the model of the Yinshan' polymetal deposit, a huge concealed intrusion may occur beneath the deposit and accordingly the temperature field of the metallogenic system, concentration field of interstitial fluid components (silicon acid), flow field (function) and precipitation volume of silica are simulated. The huge batholith would supply huge heat energy and ore materials and make hydrothermal system active in a long term and large volume accumulation of ore materials.
出处
《地质找矿论丛》
CAS
CSCD
2005年第2期87-92,共6页
Contributions to Geology and Mineral Resources Research
关键词
热质输运-反应
银山
隐伏矿体
预测
heat and mass transportation and chemical interaction
Yinshan
concealed ore-bodies
forecast
