Separated DTH drilling rigs adopt a split modular design, separating the main drill unit, power and air compressor for easy transportation, favored in mountainous, narrow and remote construction sites. They are categorized by power source, chassis, drilling depth and usage. In terms of power configuration, pneumatic separated rigs connect external air compressors via hoses, with low maintenance costs and strong impact force for hard rock blasting holes. Choosing a high-performance separated DTH drilling rig driven by independent hydraulic power packs offers stepless speed and higher drilling efficiency without heavy air pipelines. By mobility modules, small split handheld units can be carried manually to steep hills. Skid-mounted separated rigs are towed by vehicles and stay stable on flat open-pit mines. Crawler matching split assemblies realize flexible movement on muddy slopes after assembly on site. Classified by working depth, light models drill holes under 25m for small stone quarries and slope anchoring. Medium types reach 25–60m for mine blasting and road slope stabilization. Heavy separated DTH drilling rigs support drilling over 60 meters for large open-pit mining projects. Their disassembled parts greatly reduce transport difficulty in inaccessible areas.