Verification of the bidirectional drilling and blasting method using TBM pilot tunnels

Chan Woo Lee, Gyu Jin Bae, Moon Kyum Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper deals with the possibility of the new drilling and blasting method which involves drilling of charge holes performed radially in advance on the wall of a pilot tunnel. Verification of the dynamic response between the existing method and the new one is performed to compare the relative decreasing effects of the vibration on the ground surface. Three dimensional dynamic analysis for the representative single blasting hole of the two blasting methods is Performed to compare the relative decreasing effects of the vibration on the ground surface. The results show that vibration due to the bidirectional drilling and blasting method is comparatively smaller than the vibration due to the existing blasting method at the surface of the ground directly above the tunnel. It is also analyzed that the dynamic response of the ground are influenced by the direction of the blasting holes. Therefore, it is concluded that the vibration can be reduced by controlling the direction of blasting holes according to the location of the ground structures which may be influenced.

Original languageEnglish
Title of host publicationISRM International Symposium - EUROCK 1996
Editors Barla
PublisherInternational Society for Rock Mechanics
Pages741-748
Number of pages8
ISBN (Print)9054108436, 9789054108436
Publication statusPublished - 1996 Jan 1
EventISRM International Symposium - EUROCK 1996 - Turin, Italy
Duration: 1996 Sep 21996 Sep 5

Publication series

NameISRM International Symposium - EUROCK 1996

Conference

ConferenceISRM International Symposium - EUROCK 1996
CountryItaly
CityTurin
Period96/9/296/9/5

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All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Geology

Cite this

Lee, C. W., Bae, G. J., & Kim, M. K. (1996). Verification of the bidirectional drilling and blasting method using TBM pilot tunnels. In Barla (Ed.), ISRM International Symposium - EUROCK 1996 (pp. 741-748). (ISRM International Symposium - EUROCK 1996). International Society for Rock Mechanics.