Abstract Based on the case of the extra-long Erlangshan highway tunnel, a raise construction scheme is proposed for an inclined shaft when it is not useful for the construction of a main tunnel. And key techniques for construction of cross passage above the main tunnel, cutting of the top of underground fan room, construction of various intersections and breakthrough of the incline shaft are described in detail.
Abstract��
Based on the case of the extra-long Erlangshan highway tunnel, a raise construction scheme is proposed for an inclined shaft when it is not useful for the construction of a main tunnel. And key techniques for construction of cross passage above the main tunnel, cutting of the top of underground fan room, construction of various intersections and breakthrough of the incline shaft are described in detail.
.Raise Construction Techniques for Inclined Ventilation Shaft of the Long, Deep- Buried Erlangshan Tunnel[J] MODERN TUNNELLING TECHNOLOGY, 2017,V54(2): 202-206