TY JOUR TI COMPARATIVE ANALYSIS AND SELECTION OF TECHNOLOGY OF DEVICE OF FENCING METAL STRUCTURES IN CONSTRUCTION OF UNDERGROUND STRUCTURES KW underground structure KW motor transport tunnel KW metal structures KW open method of construction KW closed method of construction JO Construction and Architecture AU Korol, E.A. AU Chipova, Z.K. PY 2021 IS 9 PB Publishing Center RIOR