河西金矿深部热环境调查与分析

Investigation and analysis of deep thermal environment of Hexi gold mine

随着开采深度的不断增加,地下岩层温度显著升高,恶化了井下深部作业环境,使得采矿工程活动受到了矿井热害的影响。通过对河西金矿的热湿环境及地温条件现场调查,在河西金矿不同中段采集分析了风温(干湿球)、湿度、风速等相关数据;利用深孔测温法,测量了不同中段地温,绘制了地温梯度回归曲线,计算出平均地温梯度;实验测定了矿岩平均导热系数,计算了深部各水平中段的井下热源放热量,并确定了井下热源最大放热量,为河西金矿深部降温需风量的计算提供了数据支持和重要参考,为深部矿井的相关现场调查分析和数据应用处理提供了案例借鉴。

With the increasing mining depth,the underground rock temperature rises significantly,deteriorating the deep underground operating environment and making the mining engineering activities affected by the thermal damage of the mine.Through on-site investigation of the thermal and humid environment and ground temperature conditions of the Hexi Gold Mine,relevant data such as wind temperature(wet and dry bulb),humidity,and wind speed were collected and analyzed in different middle sections of the Hexi Gold Mine;Using deep-hole thermometry,ground temperature was measured in different middle sections,ground temperature gradient regression curves were plotted and the average ground temperature gradient was calculated;The average thermal conductivity of the ore rock was experimentally measured and the heat release from underground heat sources was calculated for each horizontal middle section of the deep mine.The maximum amount of heat release from underground heat sources was determined,which provides data support and important reference for the calculation of the cooling air requirement in the deep part of the Hexi Gold Mine,and provides a case study for the relevant field investigation and analysis and data application processing in the deep part of the mine.