№58
June 2017
ISSN
1990-4126

Russian

«Architecton: proceedings of higher education» № 42 June 2013

City as ecosystem


Davydov Vadim A.

PhD. (Geology). Institute of Geophysics,
Ural Division of the Russian Academy of Sciences,
Ekaterinburg, Russia, e-mail: davyde@yandex.ru

STUDY OF DANGEROUS GEOLOGICAL PROCESSES LEADING TO DAMAGE TO URBAN BUILDINGS


The potentially dangerous factors influencing buildings are the exogenic physical geology phenomena and processes (karst, erosion, fracturing, etc.). These may be studied with the help of geophysical methods. The article describes practical examples and results of geophysical inspection of damaged projects in Berezovsky, Sverdlovsk region. The objectives of the study involved the underlying rock condition and the character of the covering soil, as well as possible causes of exogenic changes that have led to damage to city buildings. The principal research methods included combined low-depth seismic surveying, vertical electrical sounding, and gravimetry.

Inspection of a subsidence near a road by geophysical methods revealed abandoned mine workings of the Soimanovskaya dike. However, the principal cause of the hole was the washout in the loose sediments resulting from suffusion processes.

Geophysical inspection carried out to identify the cause of the cracks in the facade of a 9-storey block of flats did not confirm the presence of underground workings under its foundation. However, a tectonic contact between rocks of different structure, characterised by loose sediments of varying thickness, were found out. The cause of the cracks is likely to be the physical mechanical properties of the rocks on the different sides of the contact, leading to settlement phenomena.

The findings of the study suggest a conclusion he geophysical surveys are highly effective when studying dangerous geological processes in built up territories.

Bibliography

1. Gulyaev, А.N., Osipov, А.Yu., and Shchapov, V.A. (2011) Nonuniformity of soils in the foundation bed as the principal cause of damage to buildings in Ekaterinburg. Architecton, No. 36, pp. 187–194. Available at: http://archvuz.ru/2011_4/20  

2. Davydov, V.A. (2010) Use of low-depth seismic surveying for studying of subsided areas. Gorny Zhurnal, No. 4, pp. 111–116.

3. Davydov, V. А. (2012) Enhancing the effectiveness of geophysical methods in low-depth studies: author’s summary of PhD dissertation (Geology). Ekaterinburg: IRA UTK.

4. Gravisurveying instruction. (1980) Moscow: Nedra.

5. Instruction on topographic, geodesic and navigation support for geological prospecting. (1997) Novosibirsk: SNIIGGiMS.

6. Electrosurveying instruction. (1984) USSR Ministry of Geology. Leningrad: Nedra.

7. Potapova, O.A. (ed.) 1990. Interpretation of seisemic surveying data: Reference manual. Moscow: Nedra.

8. «Sinus-24М» seismic station. (2004) User’s Guide. Ekaterinburg: IGF UrO RAN.

9. SNiP 22-01-95. (1996) Geophysics of dangerous natural interactions. Moscow: Minstroy Rossii.

10. Park, C.B., Miller, R.D., and Xia, J. (1999) Multichannel analysis of surface waves. Geophysics, V. 64, No. 3, pp. 800–808.

Key words: ground settlement, underground hollows, suffusion, geological studies


Russian text of this article

ISSN 1990-4126  Registration MCM el. № ФС 77-50147 of 06.06.2012 © USUAA, 2004-2017  © Architecton, 2004-2017