马尾山硫铁矿围岩温度特征及开采层地温计算

根据安徽马尾山硫铁矿矿区三个钻孔地下水的实测温度,分析了矿体围岩温度场的特征。通过温度数据拟合得到了实测地温梯度。结合地下水的运动修正地温梯度,最终计算得到了大地热流和开采层的温度。另外,根据区域地温下延公式对开采层温度进行了计算。计算结果表明,通过修正后的地温梯度计算得到的开采层的温度与应用区域地温下延公式计算得到的温度是一致的。开采层温度略高于安全标准,但不会产生热水危害。

Underground Temperature Calculation of Mined Bed in Pyrite Mine of Mawei Mountain according to Temperature Characteristics of Surrounding Rock

Based on measured the groundwater temperature of three drilled holes in Pyrite Mine of Mawei Mountain in Anhui Province, this article analyzes the characteristics of the ore body surrounding rock temperature field and obtains the measured geothermal gradient by fitting temperature data. Correct the geothermal gradient combined with groundwater movement, then finally reach the earth heat flow and the temperature of the mined layer. In addition, according to the downward-continuation formula of the regional geothermal temperature, we calculate the mining layer temperature, the calculation result shows that the mining layer temperature based on the amended geothermal gradient is coincident with the temperature obtained by the downward-continuation formula of the regional geothermal temperature. The temperature of the mined layer is slightly higher than the safety standards, but will not produce hot water hazards.