Abstract: The shaft excavated using the traditional mining method faces dangerous water inrush, geothermal, and insitu stress problems. The drilling method has limited adaptability to formations, and the caisson method is restricted by the excavation depth. To improve the construction efficiency, environment, safety, and mechanized level of shaft construction, a fullface shaft tunneling machine integrating excavation, mucking, and supporting is designed based on the tunnel boring machine technology and the shaft mining method. A hanging plate replaces the backup system, and multiple innovative designs, including rock breaking system while muck removing, muck discharge by multiinstitution, annular support propulsion system, special guiding system, and remote control system, are adopted considering the current shaft supporting method. A functional test has been conducted on a developed machine in a foundation pit, synchronous tunneling and mucking have been realized, and the shaft wall is of good quality. The results show the feasibility of the method for fullface shaft construction and promote the mechanized development of shaft tunneling.

Key words: fullface shaft boring machine, synchronous muck removal, multi-institution muck discharge, annular support propulsion system, shaft special guiding system