This study investigated the temperature field distribution of a freezing inclined shaft. Thus, a three-dimensional physical simulation test system was developed, and the system consists of six parts, which are simulation box and shaft model, loading system, freezing system, external environment simulation system, and data acquisition system. From the results of physical and mechanical property test of artificially frozen sand, in the range of 25°C to -20°C, the heat capacity of sand decreases first, then increases, decreases, and finally tends to be stable; the thermal conductivity of sand gradually increases and finally becomes stable; and the cohesion, internal friction angle, uniaxial compressive strength, and elastic modulus of artificially frozen sand all increase as the freezing temperature decreases. The three-dimensional physical simulation test and field measurement showed that the distance from the freezing pipe is the main factor affecting freezing wall temperature, and the closer to the freezing pipe, the faster the cooling rates. Comparison of theoretical calculation results and field measurement results shows that the calculation formula of freezing wall temperature with time of the inclined shaft can reflect the general law of freezing wall temperature cooling. Therefore, the 3D physical simulation test system is reliable and the test method is feasible.

中文翻译：

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人工直立多排冷冻斜井温度场分布物理模拟试验

本研究调查了冻结斜井的温度场分布。为此，研制了一套三维物理仿真试验系统，该系统由仿真箱体和轴模型、加载系统、冻结系统、外部环境仿真系统、数据采集系统六部分组成。从人工冷冻砂的物理力学性能试验结果来看，在25℃～-20℃范围内，砂的热容量先减小，然后增大，减小，最后趋于稳定；砂的导热系数逐渐增大，最终趋于稳定；人工冻结砂的内聚力、内摩擦角、单轴抗压强度和弹性模量均随着冻结温度的降低而增大。三维物理模拟试验和现场实测表明，距冷冻管的距离是影响冷冻壁温的主要因素，距离冷冻管越近，冷却速度越快。理论计算结果与现场实测结果对比表明，斜井冻结壁温随时间的计算公式可以反映冻结壁温降温的一般规律。因此，3D物理仿真测试系统是可靠的，测试方法是可行的。理论计算结果与现场实测结果对比表明，斜井冻结壁温随时间的计算公式可以反映冻结壁温降温的一般规律。因此，3D物理仿真测试系统是可靠的，测试方法是可行的。理论计算结果与现场实测结果对比表明，斜井冻结壁温随时间的计算公式可以反映冻结壁温降温的一般规律。因此，3D物理仿真测试系统是可靠的，测试方法是可行的。