Crawler type fully hydraulic tunnel drilling machines used in coal mines are mainly used for underground drilling, pumping (drainage) holes, grouting fire prevention holes, coal seam water injection holes, anti outburst and pressure relief holes, water exploration holes, geological exploration holes, and other engineering drilling. It can also be used for engineering geological exploration such as diamond, drilling, industrial and civil buildings, highways, railways, bridges, dams, and defense construction in the exploration of metal and non-metallic solid mineral deposits, as well as engineering drilling in hydrology, oil and gas field exploration, and dam grouting.