When the steel dam is up or down, the water stopper cannot be separated from the surface of the circular shaft, and the water stopper is always in a sealed state.
當鋼壩向上或向下時，止水器無法與圓軸表面分離，止水器始終處于密封狀態。

The same principle as the side water stop valve, the water stop does not leave the side chest wall (stainless steel embedded parts), so mud (mud) does not affect the opening and closing of the steel dam gate
與側止水閥的原理相同，止水口不會離開側胸壁（不銹鋼嵌入式部件），因此淤泥（泥漿）不會影響鋼壩閘門的打開和關閉

In heavily silted areas, sand (mud) thresholds and bell openings are usually installed in front of steel DAMS.
在嚴重淤積的區域，通常在鋼壩前設置擋沙（泥）的門檻和鐘形口。

The first is to block large rocks effectively.
首先是有效地阻擋大石頭。

The second is to increase the speed at which the steel dam is positioned when the dam collapses to release water, effectively sending the mixture of sediment and water directly downstream with the flood.
第二個是增加大壩倒塌以泄洪時鋼壩位置的速度，以有效地使沉積物和水的混合物隨洪水而直接沖向下游。

The operation process of hydraulic steel dam is very complicated.
液壓鋼壩的運行過程非常復雜。

Due to the influence of drainage and wind waves, the water level in front of the gate often changes, with the change of the water level in front of the gate and the imbalance of the water system, the opening of the gate is also constantly changing, which will make the production of the gate more and more serious.
由于排水和風浪的影響，閘門前的水位經常變化，隨著閘門前水位的變化和水系統的不平衡，閘門的開度也不斷變化，這將使閘門的生產越來越嚴重。

The swing of the amplitude is difficult to control, so that the gate is out of balance and "jumping", which is easy to damage the gate sill structure and greatly shorten the service life of the flap gate and even destroy the gate and gate foundation, and hydraulic steel dam can effectively avoid this series of phenomena.
振幅的擺動難以控制，以至于閘門失去平衡并發生“跳動”，這很容易損壞閘門壩檻結構并大大縮短了襟翼閘門的使用壽命甚至會破壞閘門和閘門基礎，而液壓鋼壩可以有效避免這一系列現象。