Peer-reviewed articles 17,970 +


Kosta Prodanov
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
For the most risky sections in the metro construction, the postulates of the mining methods using steel structures have to be used. With the classic settings of these methods, innovative technical solutions can be achieved, to which this report is dedicated. It is necessary to search for simplified, safe and durable tunnels and shafts when crossing existing subway lines. On this basis, the statements of the specific geomechanical tasks were formulated. In the case of shafts, the fundamental differences in the application of the classical statements of earth mechanics and the theoreticalexperimental methods for determining earth pressure have been clarified. The specifics between temporary and permanent steel fasteners used in subway construction, as well as the place of shafts in the contact between existing and newly constructed infrastructure, are discussed. The conditions of application of the steel mine fasteners in subway construction and the specifics when constructing the main details of the support frames are clarified. A mixed method between mining and New Austrian is proposed for crossing risk zones with saturated urban infrastructure. The basic principles of modeling and construction of cross tunnels between pipes of metro diameters are considered. The report with examples from practice discusses both the geomechanical problems using steel structures and their engineering solution with specific examples of implemented facilities. They bring out recommendations for practice.
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[2] Austin, S. A., Robins, P. J. and Gooder, C. I. (2000). Construction and Repair with Wet-process Sprayed Concrete and Mortar. The Concrete Society, Technical report 56(Draft), Growthorne, Berkshire.
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[4] Pacher, F. (1977). Undergroung openings and tunnels in Design Methods in Rock Mechanics. ASCE. Reston, Virginia.
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[6] Taylor, R. N.(1998). Modelling of tunnel behavior. Proc. ICE Geotechnical Engineering 131, July, pp.127-132.
[7] Zhechev, N. “Geological Problems In The Realization Of Underground Geotechnical Structures In Urban Environment”; World Mining Congress and Expo, Istanbul, 2014.
[8] Zhechev N., “Conceprual design solution of a pedestrian tunnel connection between the first and the second line of sofia metro geozone”, February 2012, Official Journal of the BAGTC.
[9] Zhechev N., “Mining solutions in central urban areas and under main streets”, World Mining Congress and Expo, Istanbul, 2011.
[10] Zhechev N., Relationship between Efficiency and Risk in the Connection between Two Tunnel Levels, Under CITY 2012 Dubrovnik, Croatia
[11] Zhechev, N. (2018). Problems of ecology and security in the contact area between old and new tunnels. Paper presented at the International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM, 18(1.2) 585-592. doi:10.5593/sgem2018/1.2/S02.074 Retrieved from
[12] Bulychev N.S., Mechanics of underground structures, ed. Nedra, 1982/ Булычев Н.С., Механика подземных сооружений, изд. Недра, 1982г.
Proceedings of 23rd International Multidisciplinary Scientific GeoConference SGEM 2023
23rd International Multidisciplinary Scientific GeoConference SGEM 2023, 03 - 09 July, 2023
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference-SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Russian Acad Arts; Turkish Acad Sci.
03 - 09 July, 2023
mine, tunnel, subway, risk, infrastructure

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