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深部围岩调热圈参数(半径和温度)的确定是开展热害防控技术研究的基础。笔者提出了一种适用于现场实测的深孔固定埋设式测温方法,给出了孔深预判公式,在调热圈温度与半径一般数学模型基础上推导了调热圈半径计算公式。根据孔深是否满足测量要求,分别讨论各情况下的调热圈温度参数处理计算公式,建议在孔深满足测量要求时调热圈温度采用实测数据计算,在孔深不满足测量要求时调热圈温度采用温度与半径一般数学模型计算。以广西某深部岩体工程为背景,设计了埋深660m处CWSK1、CWSK2两测孔参数。应用深孔固定埋设式测温方法,对测孔进行封孔作业与定期收集深孔温度测量数据。通过对实测数据分析处理,确定出CWSK1测孔和CWSK2测孔的围岩调热圈参数分别为29.8 m、33.45℃与34.3 m、33.31℃。
The determination of parameters of radius circle and radius of deep surrounding rock (radius and temperature) is the basis for the research on thermal hazard prevention and control technology. The author puts forward a deep hole fixed buried temperature measurement method which is suitable for on-the-spot measurement. The prediction formula of hole depth is given. Based on the mathematical model of the temperature and radius of the heat transfer coil, the formula of the radius of the heat transfer coil is deduced. According to whether the hole depth meets the measurement requirements, the calculation formulas of the parameters of the torch temperature in each case are discussed respectively. It is suggested that the temperature of the torch be calculated by using the measured data when the hole depth satisfies the measurement requirement. When the hole depth does not meet the measurement requirements, Circle temperature is calculated using the general mathematical model of temperature and radius. Taking a deep rock mass project in Guangxi as the background, two parameters of CWSK1 and CWSK2 are measured at a depth of 660m. Application of deep hole fixed buried temperature measurement method, the hole sealing work and regular collection of deep hole temperature measurement data. Through the analysis and processing of the measured data, the parameters of surrounding rock heat circle of CWSK1 and CWSK2 are determined to be 29.8 m, 33.45 ℃ and 34.3 m, 33.31 ℃ respectively.