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通过工程实际向大家详细介绍了脉动压强的量测技术与测量方法.在乌江构皮滩水利枢纽整体模型水垫塘底板上的应用与实验研究,就是利用点式脉动压力传感器通过放大器放大后,送给A/D转换器进行转换,然后通过计算机进行数据采集及数据处理.由此获得水垫塘底板上冲击区的时均压强及脉动压强特性:(l)在各种不同工况组合时,底板的时均动水压强值△Pmax/γ都小于165kPa(16.5m水柱),可作为动水冲击压强的控制指标;(2)水垫塘底板上的脉动压强最大均方根水柱σp,/γ=4.23m,发生在表孔单独泄流校核洪水工况1,最大均方根值与最大时均压强值都发生在冲击点处,并沿程有规律的衰减.
Through the actual engineering to everyone details of the pulsating pressure measurement techniques and measurement methods. The application and experimental research of the whole model Cushion Pool floor in the Goupitan Hydropower Project in Wujiang River is to use the point-type pulsating pressure sensor to amplify the signal and send it to the A / D converter for conversion. Then, the data acquisition and data deal with. Thus, the average pressure and pulsating pressure characteristics of the impact zone on the bottom of the plunge pool are obtained: (1) When the combination of various conditions, the average dynamic pressure value of floor (Pmax / γ) is less than 165kPa (16.5m Water column), which can be used as the control index of hydrodynamic impact pressure; (2) The maximum rms water column pressure σp, / γ = 4.23m on the floor of the plunge pool, 1, the maximum RMS value and the maximum pressure are occurred at the impact point, and along the process of regular attenuation.