This method is suitable for drilling into hard rock layers, and the drilling is not easy to deflect, and it is more advantageous to use in water-deficient areas. It is used to drill into hard rock layers and pebble layers, and the drilling efficiency can be increased several times to ten times compared with conventional rotary drilling and mechanical impact drilling, and has been promoted as an advanced technology. Its application fields are constantly expanding. In the past, it was mainly used for drilling blasting holes in mines. At present, it has been used in hydropower, railways, highways, water wells, building foundation piles, and geological exploration.
