The invention relates to a high-pressure rotary jet drilling
machine capable of achieving directional swing jet at any
azimuth angle and a construction method. The high-pressure rotary jet drilling
machine comprises a power head and a
drill rod, wherein a multi-circle absolute value
encoder I is mounted on a driving shaft of a final driving stage of the
drill rod on the power head; a sliding frameassembly is arranged on the
drill rod; a multi-circle absolute value
encoder II is arranged on the sliding frame
assembly; the multi-circle absolute value
encoder I and the multi-circle absolute value encoder II are connected with an industrial
personal computer through CAN buses; and the drill rod is in a multi-section type, and all sections of the drill rod are connected through positioning connecting assemblies, so that the positions of all the sections of the drill rod are kept consistent. According to the high-pressure rotary jet drilling
machine, parameter setting is convenient, the
automation degree is high, a swing jet starting point and a swing jet returning point CAN be selected at will according to construction requirements, different
modes such as continuous rotary jet, continuous swing jet, fixed-point rotary jet, fixed-point swing jet and continuous fixed jet are obtained, the swing jet direction and angle are still kept after the number of the drill rod is increased ordecreased, and swing jet motion is reliably transmitted.