Risk evaluation of the earthquake triggered landslide on the land reclamation slope by three dimensional instability analysis of simplified RBSM

• HAMASAKI Eisaku

  Advantechnology Co., Ltd.

• MIYAGI Toyohiko

  Department of Faculty of Liberal Arts, Touhokugakuin Univ.

• TAKEUCHI Norio

  Department of Art and Technology, Hosei Univ.

• OHNISHI Yuzo

  Department of Urban and Environmental Engineering, Kyoto Univ.

Bibliographic Information

Other Title

• 簡易ＲＢＳＭ三次元試行球面すべり面法を用いた造成地盛土斜面の地震被害評価法
• カンイ RBSM 3ジゲン シコウ キュウメン スベリメンホウ オ モチイタ ゾウセイチ モリド シャメン ノ ジシン ヒガイ ヒョウカホウ

Abstract

The report discusses the methodology of the landslide risk evaluation of the earthquake triggered slope movement at the artificial land reclamation area. The two case studies are used to evaluate the adaptability of this method. One is the case of Takamachi New Residential area damaged by Mid Niigata Earthquake 2004 and the other is Tsurugaya New town damaged by the Miyagi-oki Earthquake 1978.<br>Recently, artificial land reclamation by civil earthwork in slope areas has been widely developed in and around urbanized area. Some area such as the valley filled with reclaimed soil is relatively weak compared with cut portion. In spite of the weakness of the ground, there were poor techniques of the evaluation of slope instability.<br>The authors have developed the risk evaluation technique titled “Three dimensional slope stability analysis based on the simplified RBSM” to apply to the artificial land reclamation area. This has the advantage of not only being simple but also including the earthquake force and direction of seismic wave for calculation. Thus, the technique will be used to get the spatial distribution of the degree of Safety Factor (Fs).<br>The Fs value distributions in the two case studies are evaluated by the analyses and well explain the real distributions of the slope damages.

Journal

• Journal of the Japan Landslide Society

  Journal of the Japan Landslide Society 43 (5), 251-258, 2007

  The Japan Landslide Society

Keywords

• artificial land reclamation slope
• three dimensional slope stability analysis
• RBSM
• risk evaluation
• earthquake disaster

Details

• CRID: 1390282680178480128
• NII Article ID: 10018538460
• NII Book ID: AA11837172
• DOI: 10.3313/jls.43.251
• ISSN: 18820034
• ISSN: 13483986
• NDL BIB ID: 8667880
• Web Site: http://hdl.handle.net/10114/4589
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8667880
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed