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本文综述了测定型砂透气性的一般方法;论述了用一种新方法——排气时间法测定型砂透气性的理论依据;设计了简易可行的模拟试验装置;通过多组标定试验,得到透气性值与排气时间之间的关系曲线。
In this paper, the general methods for measuring the permeability of sand are summarized. The theoretical basis for the determination of the permeability of sand by a new method is expounded. A simple and feasible simulation test device is designed. Through several sets of calibration tests, the permeability Value and exhaust time of the relationship between the curve.