Study On Earth Temperature Distribution And Its Abnormal In GuQiao Mine

The coal energy contians the most part of the total energy of China. With the deepening of mining depth and the development of economy and technology, the safety of coal mining is paid much attention, but the problems of heat harm are becoming much seriously. In order to study the distribution laws of temperature better, the control factors and the change rules of geothermal the mine of Gu Qiao, this paper selects AnHui HuaiNan GuQiao mine as the research object.1.According to proportion of the last and the second measure temperature of the steady or the approximative steady temperature measured hole, the simple temperature measured holes are adjusted. The temperatures are reflected the geothemal area better.2.Experimentation shows that the average proportion of the spreading of heat in GuQiao is 2.34W/(mk).And the average geothermal gradient is 3.12 Celsius every one hundred meters, the conclusion is the heat flow value is 73.008mV/m2 which is higher than the average heat flow value of the province of AnHui.3.According to the data of temperature measured hole,the result shows that the average geothermal gradient is 3.12℃/hm,which is belong to positive anomalies and the warming rate is 30.2 meters ever Celsius.4.On the basis of main coal seam and the each level same temperature line,the area is devided several parts by the temperature. The result shows the western temperature is higher than the eastern.5.The mine is diveded one and two grade heat harm. The heat harm contours show that the western area reaches the one and two grade heat harm is in the depth of 400 and 600 meters and the eastern is in the depth of 500 and 700 meters.6. Analysing the control factors on the distribution of geothermal,such as geological structural,the character of rock,radioactive content and groundwater activity. The result shows that the geothermal is higher in the axis of anticline than two wings and fracture can case high temperature anomaly and the active strongly groundwater’s temperatures are different from the surrounding rock’s, which can cause high or low temperature.