Ключевые слова: development, development project, excavation, excavation development, excavation infrastructure, excavation project, excavation scale, infrastructure, infrastructure development, infrastructure project, large excavation, large infrastructure, large infrastructure project, large project, large scale, large scale excavation, large scale project, large tunnel, major, major development, major infrastructure, major project, project, scale, scale excavation, scale project, scale tunnel, tunnel, tunnel excavation, tunnel infrastructure, tunnel project, underground development, underground excavation, underground infrastructure, underground project, underground scale, underground tunnel,