DG水电站蜗壳混凝土施工优化与温控实践

Concrete Construction and Temperature Control of the Spiral Case in DG Hydropower Station:Optimization and Practice

针对西藏高寒高海拔地区对混凝土施工不利的自然因素,通过对混凝土材料到浇筑施工全过程的分析研讨、经验总结、探寻优化施工工艺,形成了一套综合性的蜗壳层混凝土温控技术专项措施,采用最优的蜗壳层混凝土浇筑施工方案,提高了施工效率,有效防止了表面性和贯穿性的裂缝出现,优良的施工质量为后续蜗壳层混凝土浇筑施工奠定了坚实的基础。

In view of the unfavorable natural factors on the concrete construction in high altitude and cold area,the overall process of the concrete construction from the concrete materials to the concrete pouring is analyzed and optimized.A set of comprehensive and specific temperature control measures is developed for the spiral case concrete construction.With the optimized concrete construction scheme,the construction efficiency is greatly improved and the occurrence of surficial and penetrating cracks of the concrete is effectively avoided.The good construction quality provides a solid foundation for the subsequent concrete pouring construction of the spiral case layer.