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Tunneling through landsliding zone; Jisuberi chitainai no tunnel seko

Journal Article:

Abstract

At the new tunnel construction site of the Shirakata tunnel on the Obama line in Yamaguchi Prefecture, a landsliding occurred at about 60 meters to the upper portion obliquely to the right hand side of the shaft when the excavation progressed to about 10 meters from the starting side. The landslide caused displacement at the shaft opening and change in the supports. As a result of the re-investigation, it was confirmed that the slide face went through the tunnel cross section. The measures taken were removal of the upper soil and an adoption of the all ground fastening (AGF) method (injection type long tip fastening method) as an auxiliary construction to stop loosening of the natural ground associated with the tunnel excavation. The result was a completion of tunneling the landsliding zone without a problem. This paper reports the AGF method adopted in the above construction, together with the construction works and natural ground conditions. The AGF method is about the same as the pipe roof method with regard to the natural ground accepting mechanism and the materials used. The difference is building an improved body in a limited area in the natural ground around the steel pipes by injecting  More>>
Authors:
Konbu, A; Hatabu, K; Kano, T [1] 
  1. Tekken Corp., Tokyo (Japan)
Publication Date:
Aug 01, 1994
Product Type:
Journal Article
Reference Number:
SCA: 422000; 540250; 320203; PA: NEDO-94:913656; EDB-95:058905; SN: 95001366474
Resource Relation:
Journal Name: Tsuchi To Kiso (Soil Mechanics and Foundation Engineering); Journal Volume: 42; Journal Issue: 8; Other Information: PBD: 1 Aug 1994
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; 54 ENVIRONMENTAL SCIENCES; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; LANDSLIDES; GEOLOGIC STRUCTURES; REGIONAL ANALYSIS; TUNNELS; TUNNELING; EXCAVATION; OPENINGS; RAILWAYS; DEFORMATION; SUPPORTS; PIPES; BOREHOLES; FOUNDATIONS; SOIL MECHANICS; GROUTING; GROUND SUBSIDENCE
OSTI ID:
27365
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Journal ID: TSTKAK; ISSN 0041-3798; TRN: 94:913656
Submitting Site:
NEDO
Size:
pp. 45-48
Announcement Date:

Journal Article:

Citation Formats

Konbu, A, Hatabu, K, and Kano, T. Tunneling through landsliding zone; Jisuberi chitainai no tunnel seko. Japan: N. p., 1994. Web.
Konbu, A, Hatabu, K, & Kano, T. Tunneling through landsliding zone; Jisuberi chitainai no tunnel seko. Japan.
Konbu, A, Hatabu, K, and Kano, T. 1994. "Tunneling through landsliding zone; Jisuberi chitainai no tunnel seko." Japan.
@misc{etde_27365,
title = {Tunneling through landsliding zone; Jisuberi chitainai no tunnel seko}
author = {Konbu, A, Hatabu, K, and Kano, T}
abstractNote = {At the new tunnel construction site of the Shirakata tunnel on the Obama line in Yamaguchi Prefecture, a landsliding occurred at about 60 meters to the upper portion obliquely to the right hand side of the shaft when the excavation progressed to about 10 meters from the starting side. The landslide caused displacement at the shaft opening and change in the supports. As a result of the re-investigation, it was confirmed that the slide face went through the tunnel cross section. The measures taken were removal of the upper soil and an adoption of the all ground fastening (AGF) method (injection type long tip fastening method) as an auxiliary construction to stop loosening of the natural ground associated with the tunnel excavation. The result was a completion of tunneling the landsliding zone without a problem. This paper reports the AGF method adopted in the above construction, together with the construction works and natural ground conditions. The AGF method is about the same as the pipe roof method with regard to the natural ground accepting mechanism and the materials used. The difference is building an improved body in a limited area in the natural ground around the steel pipes by injecting the fixing material. The use of this method caused no problems in subsidence and displacement in the surrounding ground, and completed the tunneling construction without an unusual event. 1 ref., 7 figs., 2 tabs.}
journal = {Tsuchi To Kiso (Soil Mechanics and Foundation Engineering)}
issue = {8}
volume = {42}
journal type = {AC}
place = {Japan}
year = {1994}
month = {Aug}
}