Arrangement structure and arrangement method for winch pressurization steel wire rope of rotary drilling rig

The invention discloses a rotary drilling rig winch pressurization steel wire rope arrangement structure and method, the steel wire rope arrangement structure comprises a drilling mast, a winch pressurization assembly, a power head assembly, a lifting pulley assembly and a pressurization pulley assembly, the winch pressurization assembly, the power head assembly, the lifting pulley assembly and the pressurization pulley assembly are arranged on the drilling mast, and a lifting steel wire rope and a pressurization steel wire rope are arranged on the winch pressurization assembly. The lifting steel wire rope penetrates through the power head assembly and the lifting pulley assembly and then is fixed on a pre-arranged tensioning oil cylinder in the drilling mast, the pressurizing steel wire rope penetrates through the power head assembly and the pressurizing pulley assembly and then is fixed on the drilling mast, and the power head assembly moves up and down along a drilling mast guide rail through winding and u