New technology of underground structures the framework of restrained urban conditions Mikhail Pleshko, Alexander Pankratenko, Alexey Revyakin, Ekaterina Shchekina and Svetlana Kholodova E3S Web Conf., 33 (2018) 02036 Published online: 06 March 2018 DOI: 10.1051/e3sconf/20183302036