GEOLOGICAL MODEL OF MOSCOW
Collection of engineering-geological maps and 3D-Geology
Throughout its history, Mosgorgeotrest has been engaged in engineering and geological surveying to ensure the urban development of Moscow. Boreholes descriptions, cross-sections, results of laboratory tests are carefully stored in the archives and used in the daily work of the organization. In order to develop the geological basis for Moscow urban development Mosgorgeotrest has been working on a project for large-scale geological mapping of Moscow territory for more than twenty years. In 2010-2012 a Geological Atlas of Moscow was released, including geological and hydrogeological maps at a scale of 1:10,000, including:
- geological map of Quaternary sediments
- geological map of pre-Quaternary sediments
- geological map of sub-terrane deposits
- map of man-made deposits
- maps of spreading and absolute levels of seven aquifers
- an integral hydrogeological map
- map of the distribution of geological hazards.
In 2017 Mosgorgeotrest conducted geological survey on the territory of the priority development of New Moscow. The work resulted in a hydrogeological map and hazard map of ancient karst forms and modern karst-suffusion processes that are used in urban development planning strategies for these territories.
The results of engineering and geological surveys added to a modern database after processing by machine algorithms form the "backbone" of a three-dimensional model of the geological structures of the city of Moscow. Interpretation and processing of newly obtained results is a matter of technique.
In the process of building the model not only the results of direct engineering surveys are used, but also information about the geomorphological structure of the city, geological processes, and even archival topographic data. When testing on renovation sites the technology of restoring the sole of Quaternary deposits using the results of archival geodesic surveys dated since the beginning to the middle of the XX century has shown its effectiveness. As a result of its application man-made over-dredging is mapped: filled-in reservoirs, ravines, including those located in the inter-borehole space.
Three-dimensional visualization of the construction site with the mouth of the burried clough identified using archival topographic survey.
These models exist in the internal format and can be exported into GIS and CAD formats. The opportunities of these programs allow to create maps - soil horizontal sections at specified depths or absolute marks, schemes of engineering and geological zoning according to specified criteria, and other analytical materials.
Nowadays, Mosgorgeotrest is conducting experiments on combining models of the geological structure and underground engineering infrastructure.
As the result of this work a Unified Model of Moscow's underground space is expected – the universal tool for urban planning of the city territory.