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阎王鼻子水库溢流坝段溢流面由上游椭圆段、中部幂曲线段、直线段和下游反弧段组成．施工分为三部分：首先ail下游消力麻（D．O＋27·125～＋·O＋3561）；再施工上游椭圆段（D．0＋0．OO～D．0＋3．774）；最后施工中部幂曲线段、直线段和反弧段．溢流面设两个施工缝即：D．O
Yan Wang nose reservoir overflow dam section overflow surface from the upper oval section, the central power curve section, the straight line segment and the downstream anti-arc component. The construction is divided into three parts: first, the downstream ail hemp (D.O + 27 · 125 ~ + · O + 3561); re-construction of the upstream oval (D.0 +0.OO ~ D.0 + 3.774) Straight section and anti-arc section. Spillway set up two construction joints namely: D. O