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本文通过实际水闸工程的大量试验资料,进行综合分析,认为在高淹没度堰流时,边界条件对淹没系数影响极小,可以不加考虑,而上游行近流速水头则不容忽略。在此基础上,提出淹没系数σ_s的经验公式为:σ_s=2.28H_2/H_0(1-H_2/H_0)0.4为便于实用,已将上式加以表格化,与苏联A.P.别列辛斯基的二元实验相比,具有较大的实用性和可靠性。又本文试验的最大淹没度达到0.995,完全满足平原地区水闸高淹没度的要求,精度也有保证。此外,本文建议高淹没度孔流流量的计算公式采用:Q=C_sLH_22g△Z~(1/3)式中,C_s为淹没孔流流量系数,通过大量模型与原型资料的分析计算,得出C_s的经验公式为:C_a=0.853(H_2/e)~(-1.086)上述成果经与原型实测流量验证结果,符合程度良好。
Based on a large amount of experimental data of actual sluice project, this paper considers that the boundary conditions have little effect on submergence when weir flows with high flooding degree, which can not be taken into account. On this basis, the empirical formula for submerging coefficient σ_s is given as: σ_s = 2.28H 2 / H 0 (1-H 2 / H 0) 0.4 For the sake of practicality, the above formula has been tabulated, Meta experiments, with greater practicality and reliability. In addition, the maximum submergence of this experiment reaches 0.995, which fully meets the requirement of high inundation degree of sluice in plain area and the accuracy is guaranteed. In addition, this paper suggests that the calculation formula of high submergence hole flow is as follows: Q = C_sLH_22g △ Z ~ (1/3) where C_s is the coefficient of submerged hole flow, through the analysis and calculation of a large number of models and prototype data, we get C_s The empirical formula is: C_a = 0.853 (H_2 / e) ~ (-1.086) The above results verified by the prototype flow test results, good agreement.