The estimation features of vulnerability and desintegration оf subway construction materials in Saint Petersburg
- post-graduate student Saint Petersburg State Mining Institute (Technical University)
Abstract
In this paper the features of subway construction materials degradation depending on engineering-geological, hydro-geological and geoecological conditions of Saint Petersburg underground space are considered. The basic types of subway construction placing and their destruction specificity depending on influence of water-bearing horizons hydrodynamic and hydro chemical conditions, natural and natural-technogenic gas bio-production and microbial activity are analyzed. The examples of the disintegrated materials and new growths (salt efflorescence, stalactites and others) chemical compound features depending on the content of ground waters basic components affecting on tunnels lining are resulted.
References
- Dashko R.E., Kotyukov P.V., Shatskaya E.Ju. The influence of gas generation in quaternary deposits of Saint-Petersburg on service conditions of metro tunnels // Proceedings of annual session of RAS (Russian academy of science) scientific council owing to problems of geoecology, engineering geology and hydrogeology. Moscow: GEOS, 2008. Issue 10. P.208-213.
- Dashko R.E., Kovaleva E.N. Geoecological factors of engineering geological and geotechnical conditions formation in underground space of Saint-Petersburg // Development of Urban Areas and Geotechnical Engineering/NPO "Georeconstruction-Fundamentproject". Saint Petersburg, 2008. V.4. P.491-496.
- Dashko R.E., Norova L.P., Rudenko E.S. Evolution. of geoecological conditions of Saint-Petersburg underground space // Exploration and conservation of mineral resources. 1998. № 7-8. P.57-59.