改正调压室计算的一个公式

The Correction of a Formula of Surge Tank

水利电力出版社１９８９年出版的水工手册第７～１３５页，关于阻抗式调压室在丢弃全负荷时最高水位升高值的计算公式有错误，作者经过详细推导，给出了正确计算公式。

The formula for calculating maximum water level in a frictional surge tank during load thrownoff is given on page 7-135 of 'Handbook of Hydraulic Structure Design' by Hydraulic Publisher in May 1989. By the author′s opinion,the formula as mentioned above contains some mistakes.A new formula for correction is derived in this paper.