Detection at the time of occurrence of sediment runoff and hydrological phenomena at that time in the Rokko mountain system

DOI Web Site
  • ISHIZUKA Tadanori
    Rokko Sabo Office, Kinki Regional Development Bureau, Ministry of Land, Infrastructure, Transport and Tourism
  • HATTORI Kouji
    Rokko Sabo Office, Kinki Regional Development Bureau, Ministry of Land, Infrastructure, Transport and Tourism
  • KUBO Masakazu
    Yodogawa River Office, Kinki Regional Development Bureau, Ministry of Land, Infrastructure, Transport and Tourism
  • UCHIDA Taro
    National Institute for Land and Infrastructure Management, Ministry of Land, Infrastructure, Transport and Tourism
  • KOSUGE Yasukazu
    Japan Conservation Engineers & Co., Ltd.
  • NAGATA Yoko
    Japan Conservation Engineers & Co., Ltd.
  • KOSUGI Ken'ichirou
    Graduate School of Agriculture, Kyoto University
  • MIZUYAMA Takahisa
    National Graduate Institute for Policy Studies

Bibliographic Information

Other Title
  • 六甲山系における土砂流出発生時刻の検知とその時の水文現象の検討
  • ロッコウ サンケイ ニ オケル ドシャ リュウシュツ ハッセイ ジコク ノ ケンチ ト ソノ トキ ノ スイモン ゲンショウ ノ ケントウ

Search this article

Abstract

<p>To understand the states of the groundwater level in soil layers and the trough discharge when sediment runoffs occur on a slope, numerous real-time landslide detection sensors have been deployed in a small basin in the Rokko mountain system and the groundwater level in soil layers and the trough discharge have been observed at multiple locations for about six years. During Typhoon No.11 in July 2015, real-time landslide detection sensors were activated and the data for the groundwater level in soil layers and the trough discharge at that time was obtained. Consequently, the following was revealed : 1) The sediment runoff during Typhoon No. 11 in July 2015 was not a surface failure but erosion and outflow of the surface soil owing to the traction force of stream. 2) The groundwater level in soil layers in the sediment runoff area was the highest groundwater level, causing sediment runoffs with a difference of a few centimeters in the groundwater level. 3) The rainfall that led to the highest groundwater level in soil layers varied depending on the location of the observation hole.</p>

Journal

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top