Rotary jet grouting drilling equipment

The invention relates to rotary jet drilling equipment which comprises a chassis, a drilling machine platform, a porous rotary jet drilling rod and a power device, the drilling machine platform is arranged on the chassis, and the power device is arranged on the drilling machine platform; the multi-hole type rotary spraying drill rod comprises a first drill rod body, a second drill rod body, a third drill rod body and a first connecting assembly. The first drill rod body is arranged on the drilling machine platform. The third drill rod body is arranged on the power device; the multiple second drill rod bodies are arranged, every two adjacent second drill rod bodies are connected through a first connecting assembly, and the multiple second drill rod bodies are all located between the first drill rod body and the third drill rod body; the second drill rod body close to the first drill rod body is connected with the first drill rod body through a first connecting assembly, and the second drill rod body close to t