6月21日,海蓄电站3号施工支洞堵头段Ⅰ期混凝土全部浇筑完成。3号施工支洞堵头段全长36.40m,桩号:3支1+181.943~1+145.543,混凝土分2期进行浇筑,为满足上斜井下弯段衬砌施工通道需求,Ⅰ期采取上下游边墙、顶拱分开浇筑,上下游边墙各分3仓完成浇筑,钢管段分2仓每仓13.20m,廊道段13m整仓浇筑,采用拉筋固定模板方式进行,顶拱采用 June 21, No. 3 construction of the sea power station plug hole section I concrete pouring all completed. The length of plugging section of No. 3 construction branch hole is 36.40m, and the stake No. 3 is 1 + 181.943-1 + 145.543. The concrete is divided into two phases for pouring. In order to meet the demand of lining construction of downcomer section, Side walls, roof arch separately pouring, the upstream and downstream side walls of the 3 positions to complete the pouring, steel pipe sections 2 positions each warehouse 13.20m, gallery section 13m pouring the whole position, the use of fixed reinforcement panel mode, the roof arch