The underwater acoustic armor piercing machine has a water hammer. Its large boreholes include the first and second connecting valves, which connect the large boreholes with hammers, similar large boreholes or rotary devices; and Drilling rig.

摘要

Apparatus includes a hydraulically driven HAMMER DRILL, comprising a reciprocating piston, a Valve, an Accumulator, a connection Valve Hammer,A drill stem, which includes: First and second Connection valve device, method for Assembling a Driller.