| The gold resources are more abundant in JiaoDong area, in the process of mining, there will be a problem of heat damage, this will not only have a serious impact on the physical and mental health of the underground workers, but also affect the production efficiency of the mine. In the development and utilization of geothermal energy, it can not only solves the problem of heat damage, but also can uses the geothermal resources. Water is the best carrier of geothermal heat, and the fracture in hot rock is the effective reservoir space and the main permeable channel, which control s the seepage system. Therefore, the research on the control of cracks in rock and the seepage of the earth has become a key problem in the development of the mine.This project is in the city of Peng Lai Jin Chuang group Da Liu Hang gold mine as the background, in the new model of the integrated use of geothermal energy in the mining area and the integration of the heat and heat treatment, rational utilization of geothermal resources in mines, reduces the hot and humid environment of mine, the mine of geothermal resources in the service of mine, maximizes the economic benefits of mining resources. The specific contents are as following:(1) Extensively accessed to domestic and international literature, the background and significance of the research on the geothermal resources in JiaoDong area were determined; The experimental base of Da Liu Hang gold mine in Shandong Province, field investigation, analyzed the utilization of geothermal resources, to master the hydrogeological conditions, the surrounding environment, the temperature and humidity, etc.(2)Determination of the original rock temperature of the abandoned well in the upper part of the Da liu Hang gold mine by using the method of shallow hole temperature measurement, builded a mathematical model for the effect of surface temperature variation on the variation of temperate zone, analyzed of the distribution gradient of temperature increase with depth of the original rock in the temperate zone, established a three dimensional model of shallow ground temperature field, based on the measured value of the three dimensional temperature field model, the distribution of shallow ground temperature under the geological conditions of the gold deposits in the Da Liu Hang gold deposit was observed.(3) On the basis of experiments, according to the law of non-Darcy flow, extended relationship model of mine rock mass deformation and water seepage flow, analyzed the influence of different factors on fracture seepage in rock mass quantitatively, established a control model of artificial fracture for nonlinear thermal rock mass, and solved it; Experimental verification of the model is carried out by single hole method.(4) Applicated of FLUENT software to simulate the influence of temperature on the air flow in the tunnel wall, discussed the influence of the wall temperature on the heat and moisture exchange of air flow; Analyzed the heat transfer of air and surrounding rock, according to the requirements of the working surface to air and temperature, calculated the relationship between the geometry size and the air flow rate of the new tunnel section.(5)According to the conditions of the Da Liu Hang gold mine area, to establish the model of the water use in the mining area, analyzed the model technically and economically, verified the feasibility of the model in theory. |
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