Implementation of geological exploration works in the
environment of rocks mass with strong tectonics disturbance in
the area of Červený vrch/Bořislavka station on the new metro
line V.A in Prague

D 2013

Implementation of geological exploration works in the environment of rocks mass with strong tectonics disturbance in the area of Červený vrch/Bořislavka station on the new metro line V.A in Prague

TLAMSA, Jiří, Jiří ROUT and Martin KNÍŽEK

Basic information

Original name

Implementation of geological exploration works in the environment of rocks mass with strong tectonics disturbance in the area of Červený vrch/Bořislavka station on the new metro line V.A in Prague

Authors

TLAMSA, Jiří (203 Czech Republic), Jiří ROUT (203 Czech Republic) and Martin KNÍŽEK (203 Czech Republic, guarantor, belonging to the institution)

Edition

2013. vyd. Praha, 12th International Conference Underground construction Prague 2013, Proceedings, p. 1-5, 5 pp. 2013

Publisher

Česká tunelářská asociace ITA-AITES

Other information

Language

English

Type of outcome

Stať ve sborníku

Field of Study

10500 1.5. Earth and related environmental sciences

Country of publisher

Czech Republic

Confidentiality degree

není předmětem státního či obchodního tajemství

Publication form

storage medium (CD, DVD, flash disk)

RIV identification code

RIV/00216224:14310/13:00069017

Organization unit

Faculty of Science

ISBN

978-80-260-3868-9

Keywords in English

underground construction; geotechnics; geological exploration

Abstract

V originále

Červený Vrch/Bořislavka station is located on the new metro line V.A in Prague and was designed as one-vault mined station with a length of 193 m and cross section about 224 m2. The station with a total overburden of 15 - 22 m is situated under a busy street Evropská with central tram lane and many high buildings in close surrounding. In a short time before the scheduled start of the excava-tion additional exploration works in the area of the station were carried out. These exploration works, together with the results of the access adit geological mapping, discovered diametrically different geo-logical conditions than originally anticipated. Instead of the expected massive quartzites throughout the area of the station an occurrence of shales of varying degree of weathering and intensive tectonic disturbance with only rare quartzite layers was found out. Newly detected significantly less favourable geotechnical conditions led to a need to modify the project to ensure the stability of the underground excavation, to adaptation of excavation process and design of a number of other construction-technical measures. Evaluation of the results of comprehensive geotechnical monitoring and geological mapping of progressive excavation of the station enabled retrospectively evaluate the findings of the exploratory works in the form of structure-geological model of the rock mass and determination of its geotechnical parameters. The issue of project preparation and excavation process of Červený Vrch/Bořislavka sta-tion well illustrates the need to follow the basic rules for implementing of geological exploration works, especially to perform surveys in several successive stages in an adequate scale and sufficiently in ad-vance before the start of the construction.

Citovat

TLAMSA, Jiří, Jiří ROUT and Martin KNÍŽEK. Implementation of geological exploration works in the environment of rocks mass with strong tectonics disturbance in the area of Červený vrch/Bořislavka station on the new metro line V.A in Prague. In Butovič, A., Hilar, M., Škopková, I., Zlámal, J. 12th International Conference Underground construction Prague 2013, Proceedings. 2013th ed. Praha: Česká tunelářská asociace ITA-AITES, 2013, p. 1-5. ISBN 978-80-260-3868-9.

@inproceedings{1119386,
   author = {Tlamsa, Jiří and Rout, Jiří and Knížek, Martin},
   address = {Praha},
   booktitle = {12th International Conference Underground construction Prague 2013, Proceedings},
   edition = {2013},
   editor = {Butovič, A., Hilar, M., Škopková, I., Zlámal, J},
   keywords = {underground construction; geotechnics; geological exploration},
   howpublished = {paměťový nosič},
   language = {eng},
   location = {Praha},
   isbn = {978-80-260-3868-9},
   pages = {1-5},
   publisher = {Česká tunelářská asociace ITA-AITES},
   title = {Implementation of geological exploration works in the environment of rocks mass with strong tectonics disturbance in the area of Červený vrch/Bořislavka station on the new metro line V.A in Prague},
   year = {2013}
}

TY  - JOUR
ID  - 1119386
AU  - Tlamsa, Jiří - Rout, Jiří - Knížek, Martin
PY  - 2013
TI  - Implementation of geological exploration works in the environment of rocks mass with strong tectonics disturbance in the area of Červený vrch/Bořislavka station on the new metro line V.A in Prague
PB  - Česká tunelářská asociace ITA-AITES
CY  - Praha
SN  - 9788026038689
KW  - underground construction
KW  - geotechnics
KW  - geological exploration
N2  - Červený Vrch/Bořislavka station is located on the new metro line V.A in Prague and was designed as one-vault mined station with a length of 193 m and cross section about 224 m2. The station with a total overburden of 15 - 22 m is situated under a busy street Evropská with central tram lane and many high buildings in close surrounding. In a short time before the scheduled start of the excava-tion additional exploration works in the area of the station were carried out. These exploration works, together with the results of the access adit geological mapping, discovered diametrically different geo-logical conditions than originally anticipated. Instead of the expected massive quartzites throughout the area of the station an occurrence of shales of varying degree of weathering and intensive tectonic disturbance with only rare quartzite layers was found out. Newly detected significantly less favourable geotechnical conditions led to a need to modify the project to ensure the stability of the underground excavation, to adaptation of excavation process and design of a number of other construction-technical measures. Evaluation of the results of comprehensive geotechnical monitoring and geological mapping of progressive excavation of the station enabled retrospectively evaluate the findings of the exploratory works in the form of structure-geological model of the rock mass and determination of its geotechnical parameters. The issue of project preparation and excavation process of Červený Vrch/Bořislavka sta-tion well illustrates the need to follow the basic rules for implementing of geological exploration works, especially to perform surveys in several successive stages in an adequate scale and sufficiently in ad-vance before the start of the construction.
ER  -

TLAMSA, Jiří, Jiří ROUT and Martin KNÍŽEK. Implementation of geological exploration works in the environment of rocks mass with strong tectonics disturbance in the area of Červený vrch/Bořislavka station on the new metro line V.A in Prague. In Butovič, A., Hilar, M., Škopková, I., Zlámal, J. \textit{12th International Conference Underground construction Prague 2013, Proceedings}. 2013th ed. Praha: Česká tunelářská asociace ITA-AITES, 2013, p.~1-5. ISBN~978-80-260-3868-9.

Detailed Information on Publication Record