中文摘要：

当温度坡度足够地高时，在地球的上面的外壳以内在多孔的岩石和破裂中与毛孔液体的发行量联系的对流的热转移是实质的。以便在 Guangxi 的 Dachang 矿石区域理解 Sn-polymetallic 矿化作用的过程，一个有限元素方法在这研究被使用了在这个区域模仿毛孔液体流动和热转移。根据相关地质、构造、地球物理的限制，一个计算模型被建立。它使计算模拟和敏感分析能为调查可以在这个区域影响热水的矿石开始的形成矿石的毛孔液体流动和其它钥匙因素被执行。相关模拟结果显示了那：(1 ) 在矿石区域能为毛孔液体作为优先的小径服务的 Dachang 的可渗透的差错地区流动在上一地区性规模；并且(2 ) 毛孔液体流动能影响咸度分发。这个后者因素是 Sn-polymetallic 矿化作用发生在这个区域的原因的部分。

英文摘要：

Convective heat transfer associated with the circulation of porefluid in porous rocks and fractures within the upper crust of the Earth is substantial when the temperature gradient is sufficiently high. In order to understand the process of Snpolymetallic mineralization in the Dachang ore district of Guangxi, a finite element method has been used in this study to simulate both pore-fluid flow and heat transfer in this district. On the basis of related geological, tectonic and geophysical constraints, a computational model was established. It enables a computational simulation and sensitivity analysis to be carried out for investigating ore-forming pore-fluid flow and other key factors that may affect hydrothermal ore genesis in the district. The related simulation results have indicated that： （1） permeable fault zones in the Dacbang ore district can serve as preferential pathways for pore-fluid flow on a regional-scale; and （2） the pore-fluid flow can affect the salinity distribution. This latter factor is part of the reason why Sn-polymetallic mineralization has taken place in this district.