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针对矿山含水构造的岩体温度法预报,建立了相应的三维数值模型,应用有限差分软件FLAC3D对含低温水构造影响下的热扩散效应进行了模拟,分析了岩体温度场的响应规律,得出水体的温度影响范围为25 m。定性研究了巷道的开挖过程、岩体的导热性、监测点的埋设位置与埋设深度和巷道作业环境温度对地温场的影响,提出了最佳监测深度为4~6 m,并通过对比不同位置温度曲线的变化斜率来初步判断含水体的位置,总结了岩体温度场拟合曲线的经验公式。为岩体温度法探水提供了可靠依据。
Aiming at the prediction of rock mass temperature in the water-bearing structure of mine, a corresponding three-dimensional numerical model was established. The finite element software FLAC3D was used to simulate the thermal diffusion effect under the influence of low-temperature water structure. The response rule of rock mass temperature field was obtained The temperature of the effluent body is affected by 25 m. The influence of tunnel excavation process, thermal conductivity of rock mass, embedding location and buried depth of monitoring point and working ambient temperature on geothermal field are qualitatively studied. The optimal monitoring depth is 4 ~ 6 m. The slope of the location temperature curve to initially determine the location of the water body, summed up the empirical formula of the fitting curve of rock temperature field. It provides a reliable basis for rock temperature water exploration.