三次元有限要素浸透流解析に基づく排水ボーリング効果の定量的評価法  [in Japanese] Numerical evaluation of the effects of drainage pipes by the 3D-finite element seepage analysis  [in Japanese]

Access this Article

Search this Article

Author(s)

Abstract

排水ボーリング効果を定量的に評価し得る新たな三次元有限要素解析法を提案した。従来, 排水ボーリングは専ら圧力水頭ゼロの節点として取り扱われていたが, 提案手法では排水ボーリングを透水係数を有する一次元有限要素として表現している。室内モデル実験のシミュレーションと実規模仮想斜面への適用を通して, 提案手法の妥当性を確認した。さらに, 従来法では排水ボーリング効果を正確に評価できないことも確認された。

An evaluation method is presented for the effectiveness of horizontal/semi-horizontal drains to reduce ground-water pressures in soil slopes. A system of horizontal/semi-horizontal drains is commonly used to enhance the stability of slopes in which ground-water is the main cause of instability ; this is the usual case for almost all landslide slopes in Japan. Despite its quite frequent use, no design guidelines have been established. In this paper ground-water behavior is solved by the 3D-finite element saturated-unsaturated seepage analysis. One dimensional linear finite elements are incorporated into the 3D-finite element ground-water system to simulate the influence of the drains. An experiment was conducted on a model sandy ground in a metal tank in which perforated drainage pipes were installed. The observed results were compared with the numerical ones, and good agreements were obtained, indicating the usefulness of the proposed method.

Journal

  • Landslides

    Landslides 37(3), 1-9, 2000-12-15

    The Japan Landslide Society

References:  9

Cited by:  2

Codes

  • NII Article ID (NAID)
    10013010789
  • NII NACSIS-CAT ID (NCID)
    AN00332562
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    02852926
  • NDL Article ID
    6353973
  • NDL Source Classification
    ZM49(科学技術--地球科学--地質)
  • NDL Call No.
    Z15-405
  • Data Source
    CJP  CJPref  NDL  J-STAGE 
Page Top