黄花寨水电站建设关键技术问题

介绍了黄花寨水电站建设取得的工程经验以及在一些关键技术问题上取得的突破。黄花寨水电站大坝为碾压混凝土双曲拱坝,最大坝高110 m,所处地层为摆佐组硅质灰岩,岩性为硬质岩,但内部却发育有不均匀分布的囊状风化带,地表和地下岩溶极为发育。在精心勘察和设计的基础上,将碾压混凝土和外掺氧化镁混凝土两种技术结合,仅采取简易温控措施并设置4条缝,实现了通仓碾压和快速筑坝,满足了高拱坝建设的需要。

Key technical problems in construction of Huanghuazhai Hydropower Station

The engineering experiences acquired and the breakthroughs of some key technical problems obtained from the construction of Huanghuazhai Hydropower Station are described herein. The dam of Huanghuazhai Hydropower Station is a roller compacted concrete double curvature arch dam with the maximum height of 110m and located on the stratum of siliceous limestone of Baizuo formation with the lithology of hard rock consisting of some sack-like weathered zones unevenly distributed and developed inside，while both the surface and underground karst are well-developed therein. On the basis of elaborative investigation and design，the target of the whole-block rolling-compaction of concrete and quick construction of the dam is realized with the combination of both MgO concrete technology and RCC technology through the simplified temperature measures with a fewer contraction joints; which not only satisfies the demand of the construction of the high arch dam，but also provides some references for the similar project concerned in the days to come.