Introduction. In this study, effects of umbrella arch and face bolt applications over ground settlements are examined at densely populated Poligon district (km: 2 + ...
Tunneling in Difficult Ground Study on Pre-support methods in conventional tunneling
Prepared by “M. Taromi”
Islamic Azad University - Islamshahr Branch Department of Geotechnical Engineering
INDEX Introduction Improving face stability with Sequential Excavation Method (SEM) Improving face stability with Umbrella Arc Method (UAM) Improving face stability with jet-grouting arch Improving face stability with Face Bolting Improving face stability with Combined Method Islamic Azad University - Islamshahr Branch Department of Geotechnical Engineering
Chapter 1: Introduction Soil Reinforcement Types in Conventional Tunneling Method
Islamic Azad University - Islamshahr Branch Department of Geotechnical Engineering
Chapter 2: Improving face stability with Sequential Excavation Method (SEM)
Hakim tunnel, 2015, Tehran, Iran
Islamic Azad University - Islamshahr Branch Department of Geotechnical Engineering
Tartaiguille tunnel (France, Marseilles 1998)
Chapter stability with Sequential Method Chapter23:Improving Improvingface face stability with SequentialExcavation Excavation Method(SEM) (SEM) Effects of reducing face size : • Face extrusion is proportional to size • 3-D effects (face arching – horiz. plane)
Islamic Azad University - Islamshahr Branch Department of Geotechnical Engineering
Chapter 2: Improving face stability with Sequential Excavation Method (SEM) Performance mechanism of full face excavation
Islamic Azad University - Islamshahr Branch Department of Geotechnical Engineering
Chapter 2: Improving face stability with Sequential Excavation Method (SEM) • • •