Abstract: Compared with other shielded tunnel excavation methods, the shielded excavation through empty gullies using mining method is more complicated and no similar construction technique could be followed. The construction becomes more complicated in groundwater rich with complicated tunnel alignments. This paper summarizes the construction procedures of shielded excavation through the empty gullies. Key technical points are discussed in details.

Key words: Shielded Excavations, Urban Metro, Shielded Excavation Through Empty Gullies, Mining Method, Construction Technique