贫胶凝粗粒料在功果桥水电站过水围堰坡面防护中的应用  

Application of Lean Cemented Aggregate in Slope Protection of Overflow Cofferdam for Gongguoqiao Hydropower Station

作　　者：张鹏飞[1] 张锦堂[1] 黄天润[1] 

机构地区：[1]中国水电顾问集团西北勘测设计研究院,陕西西安710065

出　　处：《水电能源科学》2013年第8期115-117,52,共4页Water Resources and Power

摘　　要：针对修筑在大流量、深厚覆盖层河道上的土石过水围堰过水期间的抗冲刷及整体稳定问题,采用贫胶凝粗粒料对堰后坡面进行防护,经过系统的试验研究,获得了较好的材料设计参数。在施工实践中通过现场质量检测以验证设计成果和应用效果。实践表明,经两年的过流检验围堰未发生破坏,实现了应用新材料、加快施工速度、降低过水度汛安全风险的预期目标。Aiming at the problems of the erosion resistance and overall stability of earth-rockfill overflow cofferdam built on the deep overburden river with large flow during the flood season, lean cement aggregate is selected for protection of the weir slope. After the systematical test study, we obtain the material design parameters. In construction practice, the design achievements and effect are verified by on-site quality test. After two years of flow test, the cofferdam does not damage. So, we achieve the target of application of new materials, acceleration of construction speed and reduction of the security risks in flood season.

关 键 词：贫胶凝粗粒料 土石过水围堰 施工工艺 功果桥水电站 

分 类 号：TV431.9[水利工程—水工结构工程] TV551.36