不同风量及围岩温度下围岩传热的实验研究
Experimental Study on Heat Transfer of Surrounding Rock Under Different Air Volumes and Surrounding Rock Temperatures
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摘要: 针对深井地下围岩传热大、不稳定的难题,结合围岩传热的基本原理,采用“模拟巷道通风系统+围岩温度模拟实验系统+数据采集系统”的方式,实现了对围岩传热模拟巷道实验系统的设计,详细介绍了围岩传热实验系统的构成、工作原理以及实验系统相关的硬件及软件,并通过多组实验验证了不同围岩温度及不同风量下的模拟巷道进出口温度变化特性,定性、定量分析了围岩传热的机理,为井下通风降温及制冷降温提供技术支撑。Abstract: Aiming at the problem of large heat transfer and instability of deep underground rock, this paper combines the basic principle of heat transfer of surrounding rock and adopts the method of “simulating tunnel ventilation system + surrounding rock temperature simulation test system + data acquisition system” to realize the design of the heat transfer simulation roadway test system; the composition, working principle and hardware and software related to the test system of the surrounding rock heat transfer test system are introduced in detail, and the simulation of different surrounding rock temperatures and different air volumes is verified by multiple sets of tests. The temperature change characteristics of the inlet and outlet of the roadway are qualitatively and quantitatively analyzed to analyze the heat transfer mechanism of the surrounding rock, which provides technical support for down-hole ventilation and cooling.
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