THE EFFECT OF REINFORCEMENT OF TUNNEL SUPPORTS LEGS BEFORE EXCAVATION FOR TUNNEL SETTLEMENT IN SOFT GROUND

DOI

Bibliographic Information

Other Title
  • 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.

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Details 詳細情報について

  • CRID
    1390282680378706688
  • NII Article ID
    130004387323
  • DOI
    10.11532/journalte1991.7.185
  • ISSN
    18849091
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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