已知b m Q求临界水深
3019.1
假设水深面积水面宽度A3/B Q2/g=
1.1 3.3311.97937.22551
1.2 3.6315.552
1.3 3.9319.773
1.4 4.2324.696
1.5 4.5330.375
1.6 4.8336.864
1.605 4.815337.21068
正常水深h0 1.124
临界水深hk 1.605
a1型雍水曲线用试算法计算临界水深