梨园水电站面板堆石坝基础处理设计

梨园水电站混凝土面板堆石坝坝基地质条件复杂,基础开挖填筑量大。为做好基础处理,在坝基开挖设计中,通过研究趾板区的地形地质条件,将趾板地基及其上下游边坡开挖与防渗、坝体变形控制、工程量综合优化统筹考虑,兼顾全面。在坝基处理中,针对不同的地质缺陷采取相应的处理措施,以满足高混凝土面板堆石坝对地基的要求。工程实践表明坝基开挖处理设计符合质量要求且经济合理。

Design of foundation treatment of concrete faced rockfill dam of Liyuan Hydropower Station

The geological condition of the foundation of concrete faced rockfill dam of Liyuan Hydropower Station is complex and the excavation and filling volume is large. During the excavation design of the dam foundation, the excavation of toe slab foundation and the surrounding slopes at upstream and downstream and seepage control, deformation control of the dam body and comprehensive optimization of total engineering quantities were taken into consideration comprehensively through the study of the topographical and geological conditions. In the foundation treatment, the corresponding measures are taken to different geological defects to meet the requirement of high-performance concrete faced rockfill dam on the foundation. The engineering practice showed that the design of foundation treatment met the quality requirement and was economy.