The equipment including hydraulic power station,drilling rig and hydraulic leg,three parts.The power station hose connection is 5-20m.The specifications are YYTZ28-1—YYTZ28-22,respectively express: one power station with one to twenty-two drilling rigs,and can flexible combine,in order to apply to a variety workshop or tunnel section. This equipment in order to apply to hard ,middle,soft terranes,and expansive soil,cobblestone,tablets stone with mud,under water and so on special formation;and also can be used fo construction,road broken project.The advance way is by hydraulic leg,hand or guide;the hydraulic power station can moved by track,car or automatic. Select standard 22*108 drill rod, hole-diameter is Φ32-Φ50，Max depth is 10m
