hammerboring
Hammerboring, also called hammer drilling or percussive drilling, is a drilling method that uses a hammering action to fracture the target material while the drill bit is rotated to advance the borehole. The technique is used for hard materials such as rock, concrete, or dense soil where purely rotary drilling would be inefficient.
Equipment and variants vary by application, but common configurations include rotary hammer drills, pneumatic or hydraulic
The basic process involves converting stored energy into short, high-amplitude impacts on the bit, breaking material
Applications span construction and geotechnical work, including foundations, rock coring, mineral exploration, tunneling support, and demolition