钢衬底板, 接触灌浆, 施工工艺

All sections of the pressurized flood discharge hole along the axis are in pressure flow state, so full lining with steel is required. Due to the limitation of construction conditions, local void will happen to the baseplate of steel lining after pouring, so the contact grouting method shall be adopted to fill the void to ensure the safe operation of dam. This paper mainly introduces the construction technology and quality control points of contact grouting for the steel lining baseplate of pressurized flood discharge hole in hydropower station dam. The practice has proved that the technology is feasible, economical and reason⁃ able, and the grouting quality meets the design and specification requirements.

baseplate of steel lining, contact grouting, construction technology