为探讨压砂条件下灰钙土水分垂直入渗特征,采用土柱模拟法,分别研究了压砂厚度、砂石粒径、土壤初始含水率及灌水量,对压砂条件下水分累计入渗量和土壤湿润锋的影响。结果表明:压砂条件下,土壤水分累计入渗量与入渗时间可以用正相关幂函数拟合。累计入渗量随着压砂厚度的增加呈增加趋势,入渗速率增加值的临界点是压砂厚度为15 cm;当砂石粒径为4.75~20 mm,明显促进水分垂直入渗过程,而砂石粒径20~40 m
The effects of heating rate (ranging from 50 to 300 ℃/s) during the final annealing process on microstructure evolution and magnetic properties of cold rolled