ABSTRACT
The development of historical cities naturally consists in the development of underground space. The article considers an integrated approach to the preservation of buildings - monuments on the example of the city of St. Petersburg, which has a large capacity of weak soils in its geological structure and a significant building area, which is a World Heritage Site protected by UNESCO. The article analyzes the experience of using various geotechnologies to minimize the impact of underground construction on the surrounding buildings. The high role of geotechnical monitoring for the preservation of monuments located near the site of underground construction is noted. The use of modern laser scanning systems and traditional methods of assessing deformations of buildings allow us to take into account the features of a unique object during monitoring. Prospects for the use of high-precision spatial monitoring of architectural monuments suggest the introduction of a new tool for monitoring the state and risk analysis of historical heritage. The data on the implementation of the described studies are confirmed by the successful implementation of the construction of an underground space on weak soils in the historical districts of the city of St. Petersburg.
