关键词: 裂隙岩体, 流-热耦合, 数学模型, 数值模拟

Abstract: By analyzing hydrogeological conditions of Panxi coal, temperature field and seepage field distributions of fractured rock mass are described based on the fluid-heat coupled model. Combined with boundary condition and parameters, the numerical simulation and analysis are carried out by using numerical software. The results of numerical simulation show that the heat transfer resulted from fracture flow has major impact on the temperature field distribution of fractured rock mass. The fault zone and ground water flow's existence change the original temperature field distribution of the rock mass. In the initial period, the vector of temperature gradient flows along the transfusion direction to the both sides. Because the permeability coefficient of rock in the both sides is lower than the fault zone place; the right isothermal line and the temperature gradient vector direction gradually move to the transfusion direction. At the same time, temperature field distribution of the both sides is changed. By the reduction of permeability coefficient, the change of permeability coefficient has impact on the temperature field distribution of fractured rock mass. The permeability coefficient is larger, the thermal migration is larger, the influence on temperature field distribution is also larger.

Key words: fractured rock mass, fluid-heat coupling, mathematical model, numerical simulation