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THE EFFECT OF REINFORCEMENT OF TUNNEL SUPPORTS LEGS BEFORE EXCAVATION FOR TUNNEL SETTLEMENT IN SOFT GROUND
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- SHIROMA Hiromiti
- 日本道路公団新潟建設局上越工事事務所
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- EGUTI Kazuyoshi
- 日本道路公団新潟建設局上越工事事務所
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- TAKADA Kunihiko
- 田建設工業 (株) 北陸支店春日山作業所
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- INOUE Hiroyuki
- 田建設工業 (株) 技術本部技術研究所
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- SAKURAI Takaomi
- 田建設工業 (株) 土木本部土木設計部
Bibliographic Information
- Other Title
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- 軟弱地山での支保工脚部先行改良工法によるトンネル沈下抑制効果について
Description
To restrain the tunnel settlement in soft ground, the reinforcement method of tunnel supports legs with jet-grouting before excavation were adapted. The uniaxial compressive strength of ground which the tunnel was excavated are about 0.2-2.OMpa. The effect of reinforcement was as follows.<BR>1) The settlement of tunnel supports legs were reduced to approximately 50 % compared with no reinforcement pattern at the same ground condition.<BR>2) The settlement were increased as the rock strength was more soft, but the velocity of the settlement were lower. So the next reinforcement method was adapted, before the rock condition was very bad.
Journal
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- PROCEEDINGS OF TUNNEL ENGINEERING, JSCE
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PROCEEDINGS OF TUNNEL ENGINEERING, JSCE 7 185-190, 1997
Japan Society of Civil Engineers
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Details 詳細情報について
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- CRID
- 1390282680378706688
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- NII Article ID
- 130004387323
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- ISSN
- 18849091
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed