浅析某引水隧洞深竖井导渣井开挖施工技术

Analysis on the Construction Technology of Excavating the Slag Guide Shaft in a Deep Shaft of a Diversion tunnel

本文以导渣井施工为例,分析了其可行性和导渣井的作用。导渣井是根据输水隧洞和竖井施工的先后性,而设计的导渣井形式。其通过合理的爆破半径和炸药量一次爆破成形,通过导渣井和竖井底部5 m段一次性爆破技术,成功地解决了竖井底部悬空状态施工,保证了施工安全和施工进度,大大地减少了施工成本。

This article takes the construction of the slag guide well as an example to analyze its feasibility and the role of the slag guide well.The slag guide well is designed according to the sequence of the construction of the water tunnel and the shaft.Through the reasonable blasting radius and explosive quantity,it is formed by one-time blasting,and through the one-time blasting technology of the 5 m section of the bottom of the slag guide shaft and the shaft,it has successfully solved the suspended construction at the bottom of the shaft,ensuring construction safety and construction progress,and greatly reducing Construction cost.