죽령터널에서의 TBM 굴착속도 및 커터수명 평가연구

Jook-Ryung roadway tunnel was constructed by drill-blast after pilot tunnelling by 2 TBMS. nis report analyzes the data for TBM performance in the total length of 7.3 km for the two pilot tunnels. Net penetration rates were recorded as high as 2.3 m/h and 2.0 m/h for the two different directions whi...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:터널과 지하공간, 15(5) 2005, 15(5), , pp.378-386
Hauptverfasser: 박철환(Chul-Whan Park), 신중호(Joong-Ho Synn), 박연준(Yeon-Jun Park), 전석원(Seok-Won Jeon), 안형준(Hyung-Jun An)
Format: Artikel
Sprache:kor
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Jook-Ryung roadway tunnel was constructed by drill-blast after pilot tunnelling by 2 TBMS. nis report analyzes the data for TBM performance in the total length of 7.3 km for the two pilot tunnels. Net penetration rates were recorded as high as 2.3 m/h and 2.0 m/h for the two different directions while degrees of operation were $31.4\%$ and $33.3\%$, respectively. The cutter lives for No.2 tunnel were evaluated $200\~280\;m^3/c$ and around 400 m/set as high as for Meraker 10 km tunnel in Norway. The relationship between net penetration rate and characteristics of rock mass which were obtained by RMR and TSP measurement, coincides with the prior studies. This kind of evaluation is expected to be used to design TBM tunnelling and to help to perform the TBM operation effectively 중앙고속도로의 죽령터널에서 상하행선 두개의 터널은 발파에 의한 굴착에 앞서 전단면터널 굴착장비로 선행 굴착되었다. 두 대의 TBM시공은 약 1년간 수행되었으며 총 연장은 7.3 km이다. 상하행선에서 순굴착속도는 각각 2.3 m/h 및 2.0 m/h 으로 분석되었으며, 가동률은 각각 $31.4\%$ 및 $33.3\%$로 분석되었다. 하행선에서 커터의 부피수명은 $200\~280\;m^3/c$이고, 길이수명은 약 400 m/set로 평가되었는데 이는 노르웨이의 메로케르 수로터널현장에서 얻어진 크기와 유사하다. 지보설계 및 TSP 측정을 통하여 얻어진 현지 암반특성에서 경암일수록 순굴착속도가 작아지는데 이는 과거의 여러 연구에서 분석된 경향과 같다. 이러한 평가연구는 TBM 굴착의 계획과 시공단계에서 원활한 굴착작업을 수행하는데 활용될 수 있을 것으로 판단된다.
ISSN:1225-1275
2287-1748