【摘要】 为探究裂隙倾角对三山岛金矿多裂隙围岩流热耦合的影响，基于三山岛海底矿体测量数据建立多裂隙围岩流热耦合模型，应用COMSOL Multiphysics将三维裂隙降维简化，分析裂隙倾角在流热耦合过程中对渗流场中裂隙出口流量、渗流速度以及对温度场中的传热时间、温度分布、裂隙出口温度的影响。结果表明：离散裂隙的倾角对渗流场和温度场有明显的控制作用。地热水的渗流速度随着与入口处距离的增加总体呈现先减小后平稳流动最后增大的趋势，随着时间的推移裂隙出口流量皆呈现出不断减小的趋势；裂隙围岩距离巷道越远温度越高，不同裂隙倾角附近围岩的等温线分布明显不规则。更多还原

【Abstract】 In order to study the effects of fracture dip angle on the flow-thermal coupling of multi-fractured surrounding rocks, a model of flow-thermal coupling of multi-fractured surrounding rocks in metal mines was established with Sanshan Island submarine metal mine as the engineering background. COMSOL Multiphysics was used to simplify the dimensionality reduction of three-dimensional fracture. What’s more, the influence of the fracture dip angle on the outlet flow rate and seepage velocity of the fracture in the seepage field was studied, as well as the heat transfer time, temperature distribution and fracture outlet temperature in the temperature field during the flow-thermal coupling process. The results show that the dip of discrete fractures have obvious control on the seepage and temperature field of surrounding rock. The seepage velocity of geothermal water shows an overall trend of first decreasing, then flowing steadily, and finally increasing with the increase of the distance from the inlet. As time goes on, the flow rate at the crack outlet shows a continuous decreasing trend. The farther the fractured surrounding rock is from the roadway, the higher the temperature is, and the isotherm distribution of surrounding rock near different fracture dip angles is obviously irregular.更多还原