The calculation methods and formulae were shown in many standards fo designing hydraulic tunnel including sections of circle and hoof with considering the effect of elastic resistance.
水工隧洞设计（如圆形、马蹄形断面）在设计规范中给出了计算方法和公式，并考虑了围岩的抗力作用。
2
With the analysis on the size of the horse-hoof-shaped leg, the relationship of the typical size was shown.