丹达河水电站坝肩高边坡施工脚手架的设计与搭设

Scaffold design and erection for dam abutment high slope construction of Dandahe Hydropower Station

为解决丹达河水电站坝肩边坡地势陡峻、开挖后无马道、支护施工难度大等问题。经广泛讨论,确定采用悬臂支撑脚手架:首先搭设2 m宽人工马道,由支撑锚杆及钢管架搭设而成,然后再以人工马道为基础,再进行坡面施工脚手架搭设。实践证明:悬臂脚手架有效地避免了支护对开挖的影响,保证了施工工期。

The dam abutment construction of Dandahe Hydropower Station has problem of steep high slope,with out berm after excavation and difficult support construction etc.Scaffold with cantilever support was adopted based on discussion.One 2m-wide artificial berm was erected first with support anchor rod and steel pipe frame.Then scaffold was erected along slope surface on the basis of artificial berm.The results of practice demonstrate that canti lever scaffold effectively prevent impact of supports on excavation and ensure construction on schedule.