梁山县从1982年冬起,推广了砼圆锥闸门,经三年的使用,效果良好。砼圆锥闸门目前生产的有直径23、35、40、50、55厘米五种规格。整个结构由闸圈与闸体两部分组成(如图)。收缩率(d_1-d_2)/h可取20%。根据实践,收缩率不宜过大、过小,当超过20%(特别是达到25%以上)时,由于水的冲力,难以掌握平衡, Liangshan County from the winter of 1982, the promotion of concrete cone gate, after three years of use, the effect is good. Concrete conical gate currently produced diameter of 23,35,40,50,55 cm five specifications. The entire structure consists of gate brake and gate body of two parts (pictured). Shrinkage (d_1-d_2) / h may take 20%. According to practice, shrinkage should not be too large, too small, when more than 20% (especially to reach more than 25%), due to the impact of water, it is difficult to grasp the balance,