老挝南俄3水电站垫层料生产工艺优化

Production Process Optimization of Cushion Material for Nam Ngum 3 Hydropower Project in Laos

鉴于南俄3水电站面板堆石坝原有垫层料的制备强度制约了大坝填筑强度,根据原人工砂石系统的特点,通过调节颚式破碎机、反击式破碎机排料口口径,形成了一套独立的垫层料生产线,取代了原“平铺立采”垫层料生产工艺,使垫层料的生产强度得以大大增加,满足了大坝填筑强度要求。阐述了对老挝南俄3水电站垫层料生产工艺进行优化的过程。

The backfilling speed for the concrete face rockfill dam of Nam Ngum 3 Hydropower Project is limited by the production efficiency of cushion material.By taking advantage of the characteristics of the original artificial aggregate system and adjusting the crumbling gap of jaw crusher or impact crusher,an independent production line of cushion material is formed.It has replaced the original production process of cushion material that used"spreading and vertical excavation method(method of artificial aggregate production by spreading different proportion of aggregate in layers and excavating vertically to get the desired aggregate)",and greatly improved the production efficiency of cushion material and satisfied the backfilling speed requirement of the dam.