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本文研究了底孔通气的基本问题,并分别按不同水流形态和通气方式加以论述。在试验研究中,通气管的能量损失和底孔断面积对需气量的影响可用一个无量纲参数来反映。用所得需气量公式计算了几个底孔的需气量,所得结果与原型观测资料甚为吻合。必须注意通气装置初始紊动的研究,特别是考虑到比尺的影响,更显得重要。
This paper studies the basic problems of bottom hole ventilation, and discusses them according to different water flow patterns and aeration patterns respectively. In the experimental study, the influence of the energy loss of the ventilation tube and the sectional area of the bottom hole on the air demand can be reflected by a dimensionless parameter. Using the obtained air demand formula, the air requirement of several bottom holes was calculated, and the result is in good agreement with the prototype observation data. Care must be taken to study the initial turbulence of the aerator, which is more important, especially considering the effect of scale.