Down-the-hole drilling RIGS in the excavation of underground powerhouses of hydropower stations
In hydropower station underground powerhouse excavation, large space and complex structure demand high from drilling equipment. Down-the-hole (DTH) drills become essential equipment for underground powerhouse excavation with their strong drilling capacity and flexible adaptability.down the hole drilling rig
DTH drills function in construction links like roof arch excavation, sidewall excavation, and floor slab excavation of underground powerhouses. They can drill blast holes of different specifications according to various excavation parts and rock characteristics.
For example:
- During roof arch excavation, they drill 90-120mm diameter and 2-3m deep pre-splitting blast holes to reduce blasting disturbance to surrounding roof arch rocks.
- In sidewall excavation, they create 100-150mm diameter and 3-5m deep blast holes for loosening blasting, improving excavation efficiency.
- Their adaptability to different excavation positions ensures precise drilling and supports the smooth progress of underground powerhouse construction.down the hole drilling rig