Men-Made Borehole Digging - 2021
Most boreholes worldwide are drilled using a motorised drilling rig. There are different types of drilling rig and methods of drilling, and the most appropriate should be chosen to suit the local hydrogeological environment. There are two main motorised drilling techniques: cable tool percussion (also known as shell and auger); and rotary drilling. Rotary is the most common method used for water borehole drilling. Rotary drilling can be air flush, sometimes with down-the-hole hammer; mud flush; or reverse circulation. However, in Myanmar, many places were dug with a man-made borehole. #borehole #myanmar #laitubemtv
