某一级水电工程高线混凝土拌和系统质量控制管理经验

关 键 词：锦屏一级水电工程；高线拌和系统；混凝土；质量控制管理 

abstract: china’s water conservancy and hydropower project construction, the concrete as a major building materials, its quality is good or bad, directly determine the safety of the main structure, but also to some extent affect the cost of the project. therefore, the quality of the concrete is one of the key factors related to the success or failure of each project, and the stability of the concrete mixing system of concrete production quality is a key condition to ensure the quality of concrete construction of hydropower project. this article by the summary of the the jinping line the concrete mixing system of production and quality control experience, from the concrete mix to determine and optimize the concrete control and management of raw materials, the concrete production process, quality control, brief description of the concrete quality of concrete mixing system of the high line control points. 

key words: jinping i hydropower project; high-line mixing system; concrete; quality control management 

中图分类号：tu377.1 文献标识码：a 文章编号：2095-2104（2012） 

锦屏一级水电站位于四川省凉山彝族自治州盐源县和木里县境内，是雅砻江干流下游河段的控制性水库梯级电站，其下游梯级为锦屏二级、官地、二滩和桐子林水电站。 

锦屏一级水电站规模巨大，开发河段内河谷深切、滩多流急、不通航，沿江人烟稀少、耕地分散，无重要城镇和工矿企业，工程的开发任务主要是发电，结合汛期蓄水兼有减轻长江中下游防洪负担的作用。 

枢纽建筑物主要由混凝土双曲拱坝（坝身设4个表孔和5个深孔）、水垫塘和二道坝、右岸1条有压接无压泄洪洞、右岸岸塔式进水口、引水系统、地下厂房及开关站等组成。大坝坝顶高程1885.00m，建基高程1580.00m，最大坝高305m，电站装机容量3600mw。水库正常蓄水位1880.00m，死水位1800.00m，正常蓄水位以下库容77.6亿m3，调节库容49.1亿m3，属年调节水库，对下游梯级电站的补偿效益显著。 

大坝主体工程混凝土由右岸高线混凝土拌和系统供应，锦屏一级右岸高线混凝土拌和系统位于大坝右岸坝肩1885.00m高程附近，配置2座2×7m3的强制式拌和楼，拌和楼选用hl340-2s5000l型二座，配用4台dkx 7.00 的双卧轴强制式搅拌机。主要供应大坝、垫座以及导流底孔封堵混凝土。根据施工总进度安排，本系统承担混凝土供应总量约600万m3，需满足混凝土月高峰浇筑强度20万m3，系统生产能力600m3/h，配置骨料预冷设施和制冰楼。混凝土预冷系统需满足制冷混凝土浇筑高峰期月平均强度约16万m3的供应，设计生产能力480m3/h。要求混凝土出机口温度为7℃及10℃，7℃混凝土生产能力为480m3/h。三班制生产。混凝土拌