地下侵食が関連した結晶片岩地すべりの移動機構  [in Japanese] The movement mechanism of crystalline-schist landslide associated with underground erosion  [in Japanese]

Access this Article

Search this Article

Author(s)

Abstract

本研究では, 善徳地すべりで地下侵食土砂の自記観測, 土層変形の観測, そして土層内部の地下水流動層の探査を行い, 岩屑質の結晶片岩地すべりの移動機構について検討した。その結果から地すべりの移動機構は, 地すべり活動に起因した地下侵食と地下侵食に起因した地すべり活動が連鎖する構造であることが明らかになった。

It has been estimated that creep movement is caused by underground erosion in the crystalline-schist debrismass landslide. However, it is not sufficient to explain the movement mechanism of landslide.<BR>Then, the authors carried out monitoring of sediment discharge caused by underground erosion, landslide mass deformation and measurement of underground water paths in Zentoku landslide mass, Tokushima prefec-ture, Japan, to clarify the movement mechanism of such type of landslide. From the results of analysis about the factor affected to underground erosion using these monitoring and measurement results, it is considered that (1) water paths are formed along/above the shear zones, where underground erosion is caused (2) sediment discharge caused by under ground erosion is affected by the factors of not only groundwater discharge but also landslide activity (3) high landslide activity makes the debris mass structure subjected to underground erosion in the landslide mass. Consequently, the investigation has made clear that the mechanism of creep movement consists of the link of two processes, one is underground erosion caused by landslide activity, and another islandslide activity caused by underground erosion.

Journal

  • Landslides

    Landslides 35(1), 1-8, 1998-06-15

    The Japan Landslide Society

References:  17

Cited by:  3

Codes

  • NII Article ID (NAID)
    10013624545
  • NII NACSIS-CAT ID (NCID)
    AN00332562
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    02852926
  • NDL Article ID
    6357014
  • 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