浮碴混凝土底板在宝兴水电站引水隧洞中的应用  

Application of floating ballast concrete floor slab at diversion tunnel of Baoxing Hydropower Project

作　　者：尹坤[1] 胡嘉航[1] 

机构地区：[1]华能西藏发电有限公司,西藏拉萨850000

出　　处：《广西水利水电》2014年第4期57-58,70,共3页Guangxi Water Resources & Hydropower Engineering

摘　　要：在宝兴水电站引水隧洞底板施工过程中,通过现场浮碴混凝土底板抗外水抬动试验,并参考类似工程经验,对原素混凝土底板施工方案进行了优化,在部分Ⅱ-Ⅲ类围岩洞段采用浮碴混凝土底板,简化了底板清理的施工工序,降低了底板混凝土厚度,增加了混凝土底板及边墙排水孔,对控制投资、加快施工进度起到了积极作用。For the diversion tunnel of Baoxing Hydropower Project,field floating ballast concrete floor slab lifting test against external water pressure was conducted during construction. With reference to the testing results and the experience of similar projects,the original plain concrete floor slab construction scheme was optimized and floating ballast concrete floor slab scheme was adopted for the tunnel sections with II^III category surrounding rock ,which had played an active role in cost control and accelerating construction progress due to simplified floor slab cleaning procedures,reduced concrete slab thickness,increased drainage holes on base slab and walls.

关 键 词：引水隧洞 浮碴 底板外水压力 抬动试验 宝兴水电站 

分 类 号：TV554[水利工程—水利水电工程]