It is believed that the great turbulent energy at low Froude numbers acting on the downstream river bed is the main cause of the erosion The length of river bed to be protected downstream of a stilling basin is recommended.

• 认为较大紊动能的频繁作用是造成下游河床冲刷破坏的主要因素,并提出消力池下游最需要保护的河段长度。