保温保压浇筑蜗壳二期混凝土的施工对策

Block-out Placement for Spiral Cases under Desirable Water Temperature and Pressure Conditions

蜗壳二期混凝土被称为电站厂房混凝土的“心脏” ,是最关键和最难浇筑的部位。三峡左岸电站厂房采用对蜗壳充水保温保压模拟运转状态浇筑二期混凝土是一项新技术 ,目前在国内外属首例 。

The spiral cases, as a heart of a power plant, are the key locations with difficulties in concrete placement. The block out placement around the spiral cases of the left power plant at the Three Gorges project, under potential operational water temperature and pressure conditions, is a new concrete construction technique that may be unprecedented in the world. The construction quality will be of great importance to the safe operation, vibration and stability of the units.