论文部分内容阅读
本文利用可模拟自然环境的土壤热质迁移实验装置,就自然气候条件下风速、日照、大气温度与湿度等因素对土壤中水、盐、热等要素的一维动态迁移的影响进行了多种条件下的实验研究,揭示了土壤内温度、水分和盐分的分布动态与外界气候因素之间的联系,获得了土壤热质迁移过程中各主要参数的变化规律。对于本文实验中的砂土而言,发现土表以下存在吸水、过渡和释水三个自然分区,并分析了热渗透深度和平衡时间等主要的热质迁移特征,从而为各种理论模型提供了可靠的验证。
In this paper, we use a soil heat and mass transfer experimental device that can simulate the natural environment to study the effects of wind speed, sunshine, atmospheric temperature and humidity on the one-dimensional dynamic migration of water, salt and heat in soil under natural climatic conditions The experimental study reveals the relationship between the dynamic distribution of temperature, moisture and salinity in the soil and the external climate factors, and obtains the variation rules of the main parameters in the process of soil heat and mass transfer. For the sandy soil in this paper, three natural zones of water absorption, transition and water release are found below the soil surface, and the main heat and mass migration characteristics such as the depth of heat penetration and the equilibrium time are analyzed, so as to provide various theoretical models Reliable verification.