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通过对潘西煤矿水文地质条件的分析,基于裂隙岩体的流-热耦合数学模型,描述了裂隙岩体渗流场分布和水流及岩体的温度场分布,并结合边界条件及计算参数对裂隙岩体的流-热耦合传热进行了数值模拟和分析。数值模拟结果表明,岩体内裂隙水流所引发的热量迁移,对裂隙岩体的温度场分布有重要影响。断裂带及地下水流的存在改变了岩体的原有温度场分布。在渗流初期,温度梯度矢量沿渗流方向向两侧岩体方向流动,由于两侧岩体的渗透性系数低于断裂带处的渗透性系数,右侧等温线及温度梯度矢量方向逐渐向渗流方向移动,改变了两侧岩体的温度场分布。通过对断裂带内裂隙水流渗透性系数的折减,分析渗透性系数发生变化时对岩体温度场分布的影响,渗透性系数越大,伴随的热量迁移增大,对岩体的温度场分布的影响也越大。
Based on the analysis of hydrogeological conditions in Panyi coal mine, based on the mathematical model of flow-heat coupling in fractured rock mass, the seepage field distribution and flow field of rock mass and the temperature field distribution of rock mass are described. Combining with the boundary conditions and calculation parameters, The flow-heat coupling heat transfer in rock mass is numerically simulated and analyzed. The numerical simulation results show that the heat transfer caused by the fissure water flow in the rock mass has an important influence on the temperature field distribution of the fractured rock mass. The existence of fault zone and groundwater flow changed the original temperature field distribution of rock mass. At the initial stage of seepage, the temperature gradient vector flows along the seepage direction to both sides of rock mass. Because the permeability coefficient of rock mass on both sides is lower than the permeability coefficient at fault zone, the right isothermal line and temperature gradient vector direction gradually turn to the direction of seepage Moving, changing the temperature field distribution of rock mass on both sides. By reducing the permeability coefficient of fractured water flow in fractured zone, the influence of permeability coefficient on temperature field distribution is analyzed. The larger the permeability coefficient is, the larger the heat transfer is. The distribution of temperature field in rock mass The greater the impact.