【摘要】 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。更多还原

【Abstract】 A three-dimensional numerical model was built for the rock temperature method for a water forecast.The thermal diffusion effect was simulated with the help of the finite difference software FLAC3D.The temperature response feature of a rock mass was analyzed and the distance affected by the water temperature was concluded to be around 25m.The impact of the roadway excavation process,the thermal conductivity of rock,the location of monitoring points,the buried depth of the monitoring points and the roadway environment temperature were also qualitatively studied.The best monitoring depth was about 4~6m,and the location of a water-bearing structure was determined by comparing the slope of temperature curves at different positions.Finnally,the temperature fitting curve of a rock mass was found.It provides the theoretical foundation for forecasting water with rock mass temperature.更多还原