About the causes of the accidents in deep foundation pits

Purpose. Scientific research of the causes of the numerous accidents in the calculation and construction of the deep foundation pits in the conditions of the compact urban development. Methodology. The accidents in the foundation pits more than 15 meters depth were selected as a material for the analysis. Findings. Aftercarrying out the analysis of the various errors that leads to the accidents, the main causes and consequences of these accidents have been investigated. Three main groups of causes of accidents were classified as: errors in carrying out of the geological, errors in the calculation and designing, and errors in the construction and the irregular running. Also the subgroups of errors have been identified with the examples of the accidents have happened in the world. Practicalvalue. The article presents the results of the complex analysis of the accidents in deep foundation pits and their consequences. The main causes of the destruction of foundation pits were classified, which allows increasing the level of the understanding on the issue of the accidents in deep foundation pits and avoiding making similar mistakes in the future.