Determination of the parameters of local reinforced zones under the protection means Serhii Nehrii, Tetiana Nehrii, Oksana Zolotarova, Khairulla Aben and Khalidilla Yussupov E3S Web Conf., 280 (2021) 08018 Published online: 30 June 2021 DOI: 10.1051/e3sconf/202128008018