Construction equipment and construction process for tunnel primary support

The invention discloses construction equipment and a construction process for primary supporting of a tunnel, which are realized on the basis of the construction equipment for primary supporting of the tunnel, the construction equipment comprises a cab, a special engineering chassis system, a sliding system and an arm support system, the cab comprises a cab I and a cab II, and the special engineering chassis system is located at the bottom layer of the equipment; a sliding system is arranged above the special engineering chassis system, a whole set of arm support system is connected above the sliding system, a walking system, a hydraulic system and a power system are arranged in the special engineering chassis system, and an electric control system is arranged on the side, close to a first cab, of the upper surface of the special engineering chassis system. The equipment has the beneficial effects that the equipment provided by the invention is simple in structure, relatively short in vehicle body, good in ad