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本文对于井筒和通风巷道的气体,根据多变定律流动时所得出的一些结果,给予了一个简单的理论分析处理。这可以表示成:在井筒任一位置上,作用在 U 型玻璃管负压计两弯头(管臂)上的绝对压力的比率为一常数(负压计两弯头用管子连到井口和井底)。另外,还研究了垂直和水平的有摩擦流动的气流的多变关系以及在测量管里的静态无摩擦的空气柱的多变关系,并对水平有摩擦的多变定律进行了演算。用 U 型负压计和管子联合测量表明:垂直井筒与假想的处于水平状态的井筒,在同一点上用 U 型管测得的摩擦流动的能量损失是相同的(在每一情况下,温度和其他条件应是相同的)。得出了静态空气柱和摩擦流动气流柱的温度、绝对压力和比重(或密度)与井深之间的关系式。井筒中气体流动所得到的结果曲线,用PV 图示之。
In this paper, we give a simple theoretical analysis of the gas flow in wellbores and ventilation tunnels according to some results obtained when the flow is changing according to the variable law. This can be expressed as: the ratio of the absolute pressure acting on the two bends (tube arm) of the U-shaped glass tube vacuum gauge is a constant at any position of the well bore (the two bends of the negative pressure gauge are connected to the well head and Bottom). In addition, the changing relationship between vertical and horizontal flow of frictional flow and the changing relationship of the static frictionless air column in the measuring tube are studied, and the horizontal and variable friction law is calculated. The joint measurement with a U-negative manometer and a pipe shows that the energy loss of the frictional flow measured by a U-tube at the same point is the same for the vertical wellbore and the hypothetical horizontal wellbore (in each case, the temperature And other conditions should be the same). The relationship between temperature, absolute pressure and specific gravity (or density) of static air column and frictional flow column and well depth is obtained. The resulting gas flow in the wellbore is plotted with PV.