工作闸门局部开启下底板压力和底空腔长度规律研究

Study on Bottom Pressure and the Length Disciplmes of Bottom Cavity in Partial Opening of Working Gate

泄洪洞工作闸门在不同开度下底板压力和底空腔长度存有一定的变化规律.在工作闸门四种典型开度下,研究出口底板压力,空腔压力分布情况,分析其规律性;研究底空腔长度在四种开度下的变化规律,即工作闸门在不同开度下,底空腔的大小与压力峰值位置呈一定比例关系,比例系数与闸门开度也呈线性关系.

The pressure of bottom plate and the length of bottom cavity in spillway tunnel are different under different opening conditions of the working gate. Under four typical opening conditions of the working gate, the bottom pressure of outlet tunnel and the distribution of cavity pressure are studied for their disciplines. The variation of bottom cavity length is also analyzed in 4 partial openings. The results show that the size of bottom cavity keeps a certain proportion with the peak value of cavity press, while the proportion coefficient holds a linear relationship with the gate opening.