Petr Demenkov

Saint Petersburg Mining University · Department of Building

In modern megacities, every day, people are faced with the problem of finding a place to park the cars, this problem is especially acute in the city center. The number of existing parking spaces is sorely lacking in view of the rapid growth in the number of cars. Therefore, the optimal solution for the construction and reconstruction of buildings i...

The purpose of the work is to review the existing techniques for evaluating the stability of rock around the vertical shaft and to make the comparative analysis of the effect of using different rating techniques on the assessment of the strength and stability of the massif, as well as on the results of stress calculation on the inner contour of the...

The study has been aimed at development of a new method of constructing a geotechnical barrier (enclosing structures) when excavating pits, being more rigid compared with a sheet pile and a wall made of bore-secant piles and having less labor content and less cost than a diaphragm wall. The method is mainly aimed at ensuring the stability of the wa...

This article discusses possible variants of underground parking lot in complex engineering and geological environment of St Petersburg, namely: soil excavation in open pit and excavation with solid supports. These methods were analyzed with regard to reasonability for preset construction conditions. A series of predictions were performed using Plax...

When constructing buildings and structures for industrial and civil purposes, it is important to ensure safe working conditions for the tower crane operator and contractors of construction and installation works on the construction site, since these conditions largely determine the performance of the tower crane and the pace of construction in gene...

The paper presents the results of numerical experiments on the simulation of compensatory injection for the protection of the buildings while tunneling performed in the Plaxis software. A comparison is made of the change in the maximum surface subsidence and up heaving during compensation measures during and after tunneling. The regularities of the...

The article presents the calculation of the pit construction and possible settlement from the buildings erected in the conditions of compact city development in St. Petersburg. The analysis of the most effective types of shoring walls for support of excavation pits under complex engineering and geological conditions is performed. Geotechnical inves...

In this paper the technique of determination of rational values of tunnel face pressure in the bottom of the tunnel in a massif of soft soils based on the analysis of the geomechanical processes occurring in the bottom part of the tunnel during the tunneling with the use of tunnel-boring mechanized complex (TBMC) with active tunnel face pressure (T...

The paper presents a methodology for predicting the stress-strain state of deep foundation constructions of subway stations. The methodology is based on an open dynamic system «rock mass - construction technology - subway station». This system takes into consideration the structural features of the stations and stages of their construction, that in...

The paper is dedicated to the development and geomechanical substantiation of new design solutions of deep-laid subway of columned stations without side platforms. The authors have developed a new design of figure metal tubing that fits into the tunnel clearance. This solution allows the through tunnel boring with high performance shield complexes....

The article presents the results of the evaluation of design and technological risks when considering the project of water-saturated soil mass stabilization in order to prevent the settling of the earth’s surface at the emergency site between Lesnaya and Ploschad Muzhestva stations in the period from 2005 to 2016. The analysis of the main causes of...

The paper presents the analysis of errors in the process of pit excavation and the causes of their occurrence. A method for the assessment of the impact of the pit on the surrounding buildings is submitted. The classification of accidents is given according to their liquidation costs. The importance of engineering and geological surveys on the site...