摘要
糯扎渡心墙堆石坝最大坝高261.5 m,为强震区建设的超高心墙堆石坝,具有上下游坝坡较陡、地形地质条件复杂,天然土料颗粒级配细、粘粒含量偏高等特点。根据工程特点,从坝料、坝体结构、抗震措施、坝基处理等方面进行了设计。糯扎渡工程特有的设计主要有防渗土料采用人工掺砾石土料、上游坝壳采用含软岩堆石料填筑、坝体顶部采用堆石内加不锈钢钢筋的抗震措施、坝基构造软弱岩带采用高压干磨细水泥固结灌浆等。
The core rockfill dam in Nuozhadu Hydropower Station has a maximum height of 261.5 m, and is an ultra-high core rockfill dam in meizoseismal region. The dam has several characteristics, such as relative steep dam slope in upstream and downstream, complex geological conditions and fine natural soil material particle gradation with higher clay content. The dam material, dam structure, seismic measures and foundation treatment are focused in engineering design because of the special characteristics of dam. The special designs of Nuozhadu Dam include taking natural clay soft mixed with artificial gravel as impervious soil material, upstream dam shell being filled with rockfill containing soft rock, adding stainless steel bars in top rockfill area as an aseismic measure, and adopting high-pressure consolidation grouting with dry grinding thin cement in weak rock zones of dam foundation.
出处
《水力发电》
北大核心
2012年第9期27-30,共4页
Water Power
关键词
心墙堆石坝
坝体断面
基础处理
抗震
糯扎渡水电站
core rockfill dam
dam section
foundation treatment
seismic resistance
Nuozhadu Hydropower Station
