Use of Polymer Fiber (HPP) Reinforced ShotCrete instead of Final Lining in Khomary Tunnel

摘要

Khomary tunnel, with the length of 2 Kilometer, is one of the most important tunnels existing in Bandar Abbas – Mashhad railway in Iran. This railway, with the length of 1000 km, connects Persian Gulf to middle Asia. Almost a quarter of the tunnel lining is composed of ordinary reinforced concerte and the rest includes shotcrete layer reinforced with polymer fibers (HPP). This paper deals with shotcrete practical executive operations and its advantages to the ordinary reinforced concrete lining.