Single bit
2022/02/18

Drilling a Single Hole in a Non-Self-Supporting Mountain | What We Gain from Challenging Sites

Hello, everyone. This is Enta. I’m really stuck on this job right now, lol. It’s supposed to be single-pipe drilling, but this isn’t the kind of slope where you can actually drill with a single pipe—it can’t be done without double-pipe drilling! If I try to drill with a single pipe, it just collapses right away. The borehole walls in the natural ground start to…