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概述龙羊峡水电站中、深、底孔泄水道系由坝上进口、穿过坝体、出坝后傍山布置而成.位于坝身部分为有压孔道,压力段断面形式采用了从进口到出口逐渐收缩的直角矩形孔口.具体布置是(见图1):中孔位于左岸6~#坝段内,底坎高程2540米,设计水头60米,最大水头67米,压力段全长50.5米.进口尺寸为12×14.11米~2,由顶曲线为x~2/9.9~2+y~2/3.3~2=1的部分椭圆,侧曲线为x~2/6~2+y~2/2~2=1的1/4椭圆,底曲线为半径2米的1/4隅角小圆弧所组成.进口末端设8×11米~2的事故平面闸门,闸槽后为一半径44米、转角21°37′34″的平面
Overview Longyangxia Hydropower Station, deep, bottom drain drains from the dam on the import, through the dam body, out of the dam after the mountain layout is located in the dam part of the pressure tunnel, the pressure section of the cross-section from imported To the outlet gradually shrinking rectangular rectangular orifice. The specific layout is (see Figure 1): the hole located in the left bank 6 ~ # dam section, the bottom ridge elevation of 2540 meters, the design head of 60 meters, the maximum head of 67 meters, the total length of the pressure section 50.5 meters, with an inlet size of 12 × 14.11 m ~ 2 and partial ellipses with top curves x ~ 2 / 9.9 ~ 2 + y ~ 2 / 3.3 ~ 2 = 1 with side curves of x ~ 2/6 ~ 2 + y ~ 2/2 ~ 2 = 1 1/4 ellipse, the bottom curve is a radius of 1/2 corner of a small corner of the composition of the corner of the entrance 8 × 11 m ~ 2 accident plane gate, after the gate A radius of 44 meters, the corner of 21 ° 37’34 "of the plane