斜井一次扩挖成型工艺在海蓄电站的应用

Application of Inclined Shaft One-time Expansion Forming Technology in Hainan Pumped Storage Power Station

为保障施工安全和减少施工周期,海蓄将常规斜井开挖工艺调整为溜渣导井反拉成型后一次性自上而下全断面扩挖施工工艺,通过调整溜渣导井位置、爆破设计和开挖结构等工艺参数,最终确定一次扩挖施工工艺。应用该工艺海蓄电站提前36 d完成斜井开挖施工,效果显著。

To ensure the construction safety and short the construction period,the seawater will be regular storage slope excavation program guide well-adjusted to sneak slag after counter loop forming one-time top-down construction technology for whole section enlarge dig,by adjusting the sneak slag guide well location design and excavation blasting process parameters such as the structure,the final a expansion digging construction technology and application of the technology of sea hydroplant 36 days to complete the slope excavation construction in advance.