ANALYSIS OF THE PARAMETERS OF THE TUNNEL PRIMARY LINING

Nevena Ivaylova Babunska-Ivanova

Scientific paper ID 1851 : 2019/3

ANALYSIS OF THE PARAMETERS OF THE TUNNEL PRIMARY LINING

Nevena Ivaylova Babunska-Ivanova

In the construction of tunnels, in order to prevent the destruction of the underground excavation under the influence of rock pressure and to ensure safe working conditions until building of the permanent lining of the facility, the tunnel profile needs to be supported.

Modern rock supports are d as main part of the permanent lining and in this sense they are defined as a primary lining. As the main element of the tunnel construction, the primary lining must perform its purpose for secure and reliable supporting of the tunnel profile.

The type of the rock support is chosen mainly according to the parameters and characteristics of the rock massif. The primary lining consists of different rock supports, according to the category and the quality of the rocks.

The latest trends in the development of tunnel construction inculcate increased safety ments for the construction of underground facilities. Implementation of the primary lining after excavation has a key role in tunnels. It is essential to select the correct rock support, to analysis its parameters to fully meet the geological conditions of the massif. Therefore, it is necessary to compare different parameters of the primary lining, according to the category and the quality of the rocks at different widths of the tunnel profile. This is also the subject of this research. The most recent developments in the field of tunnel construction, including RMR and Q rock classification systems, have been used in the analysis. Statistical analyzes were performed. According to the comparison between the parameters of the different types of primary lining, are made the relevant conclusions.

• Reload article • Open/Download as PDF

тунели първична облицовка крепежна конструкция RMR Q.Key word: tunnels primary lining support system RMR Q.Nevena Ivaylova Babunska-Ivanova

BIBLIOGRAPHY

[1] Nikolov V. Proektirane i stroitelstvo na patishta, 588 s., ISBN–10:954-12-0124-4, Sofiya, VTU “T. Kableshkov“, 2012.
( [1] Николов В. Проектиране и строителство на пътища, 588 с., ISBN–10:954-12-0124-4, София, ВТУ “Т. Каблешков“, 2012. )

[2] Zafirova M. Proektat “Via Karpatiya“ i Operativna programa “Transport i transportna infrastruktura”, Mezhdunarodna nauchna konferentsiya “TRANSPORT – 2017“, sp. “Mehanika Transport Komunikatsii“, tom 15, broy 3, statiya №1497, str. VIII-1÷VIII-6, ISSN 1312-3823, Sofiya, 2017.
( [2] Зафирова М. Проектът “Виа Карпатия“ и Оперативна програма “Транспорт и транспортна инфраструктура”, Международна научна конференция “ТРАНСПОРТ – 2017“, сп. “Механика Транспорт Комуникации“, том 15, брой 3, статия №1497, стр. VIII-1÷VIII-6, ISSN 1312-3823, София, 2017. )

[3] Valkov R. Zhelezopatno stroitelstvo i sazdavane na zhelezopatna mrezha v Republika Balgariya, Sbornik dokladi 12-ta mezhdunarodna nauchna konferentsiya VSU 2012, str. VI-60÷VI-64, ISSN 1314-071X, 2012.
( [3] Вълков Р. Железопътно строителство и създаване на железопътна мрежа в Република България, Сборник доклади 12-та международна научна конференция ВСУ 2012, стр. VI-60÷VI-64, ISSN 1314-071X, 2012. )

[4] Kolev Ch. Naturno izsledvane za vliyanieto na geolozhkite usloviya varhu deformatsiite na tunelnata oblitsovka, Mezhdunarodna konferentsiya „Rolyata na geomehanikata za ustoychivo razvitie na minnata industriya i grazhdanskoto stroitelstvo”, Sbornik dokladi, ІІІ – str.17÷24, Nesebar, 2007.
( [4] Колев Ч. Натурно изследване за влиянието на геоложките условия върху деформациите на тунелната облицовка, Международна конференция „Ролята на геомеханиката за устойчиво развитие на минната индустрия и гражданското строителство”, Сборник доклади, ІІІ – стр.17÷24, Несебър, 2007. )

[5] Kolev Ch. Kompleksni sistemi za geozashtita, Tehnika, ISBN 978-954-03-0677-3, str. 44÷50, Sofiya, 2007.
( [5] Колев Ч. Комплексни системи за геозащита, Техника, ISBN 978-954-03-0677-3, стр. 44÷50, София, 2007. )

[6] Bieniawski Z.T. Engineering Rock Mass Classifications: A Complete Manual for Engineers and Geologist in Mining, Civil, and Petroleum Engineering, Wiley, 1989.

[7] Barton N., R. Lien, J. Lunde. Engineering classification of rock masses for the design of tunnel support. Rock Mechanics 6, pp.189-236, Springer-Verlag, 1974.

[8] Babunska-Ivanova N. Opredelyane na vzaimovrazkata mezhdu RMR i Q sistemite pri stroitelstvoto na tuneli. XXII Mezhdunarodna nauchna konferentsiya “TRANSPORT – 2017“, sp. “Mehanika Transport Komunikatsii“, tom 15, broy 3, statiya №1503, str. VIII-35÷VIII-40, ISSN 1312-3823, Sofiya, 2017.
( [8] Бабунска-Иванова Н. Определяне на взаимовръзката между RMR и Q системите при строителството на тунели. XXII Международна научна конференция “ТРАНСПОРТ – 2017“, сп. “Механика Транспорт Комуникации“, том 15, брой 3, статия №1503, стр. VIII-35÷VIII-40, ISSN 1312-3823, София, 2017. )

[9] Bieniawski Z.T. Tunnel Design by Rock Mass Classifications, Technical Report, 1990.

[10] Romana M. Update of 1989 Bieniawski’s RMR guidelines for tunnel excavation and support. Proceedings of EUROCK 2014 ISRM European Symposium, pp.1139÷1144, 2014.

[11] Grimstad E., N. Barton. Updating of the Q-System for NMT. Proceedings of the International Symposium on Sprayed Concrete, Fagernes, pp.46-66, Norway, 1993.

[12] Grimstad, E. i kolektiv. Rock Mass Quality Q Used in Designing Reinforced Ribs of Sprayed Concrete and Energy Absorption, NGI Pub., 2000.
( [12] Grimstad, E. и колектив. Rock Mass Quality Q Used in Designing Reinforced Ribs of Sprayed Concrete and Energy Absorption, NGI Pub., 2000. )

[13] Norwegian Geotechnical Institute. Using the Q-system. Rock mass classification and support design, 54p., NGI, Oslo, Norway, 2015, www.ngi.no.