Study on the influence of fracture flow on the temperature field of rock mass with high temperature

摘要

For the development of deep resources, the temperature fieldof deep rock mass is an unavoidable problem. In order to understand the law of redistribution of temperature fieldin deep rock mass disturbed by fssure water, this paper simulates the heat transfer process of smooth and rough fractured rock mass with groundwater ?ow, and analyzes the in?uence of fracture opening, seepage velocity and roughness on the redistribution of temperature feld. The results show that: the larger the fracture opening is, the smaller the growth rate of rock wall temperature is, and the larger the range of slow increase is of water temperature;seepage velocity has a gradual effect on the increase of rock wall temperature, the greater the seepage speed is, the smaller the water temperature is at the same position;when the roughness is between 0% and 20%, the rock wall temperature has a sudden drop, and the maximum rock wall temperature decreases by 20.56%. Compared with the ?ow velocity, changing the fracture roughness can improve the cooling effciency of rock wall. With the increase of roughness, the water temperature in the same position is lower.