深埋实验厅预冷期热湿环境变化影响因素研究

Change of Heat and Humidity Environment and its Influencing Factors in the Pre-cooling Period of Ultra-deep Underground Laboratory

随着地下工程得到广泛的应用,地下建筑的热湿负荷特性得到越来越多的关注。针对超深地下建筑预冷阶段的热湿环境变化及其影响因素进行了研究,根据实际的地下建筑空气热湿变化过程建立了物理模型及数学模型,并利用Matlab编程实现求解。研究结果表明,岩体初始温度、送风量和送风温度3个因素对预冷时间有显著影响,3个因素每变化1%导致预冷时间变化依次为5.23%、5.16%和2.6%;岩体导热系数、内扰散热量和衬砌导热系数有一定影响,3个因素每变化1%导致预冷时间变化依次为0.63%、0.58%和0.25%;而对空气初始温度基本没有影响。

With the wide application of underground engineering, the heat and humid load characteristics of underground buildings have received more and more attention. The change of heat and humid environment and its influencing factors are studied in the pre-cooling stage of ultra-deep underground building. According to the actual change process of air heat and humidity in underground building, the physical and mathematical models are established, and the solution is realized by Matlab programming. The research results show that rock mass initial temperature, supply air volume and supply air temperature have a significant impact on the pre-cooling time. Each 1% change of the three factors leads to the change of the pre-cooling time to 5.23%, 5.16% and 2.6%. The thermal conductivity of the rock mass, the heat dissipation of internal disturbance and the thermal conductivity of the lining have a certain influence. Each 1% change of the three factors will cause the pre-cooling time to change sequentially by 0.63%, 0.58% and 0.25%, while the initial air temperature has basically no effect.