Development of continuous measuring bedload sensor and its applicability

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K07502
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Forest science
• Research Institution: Research and Development Center, Nippon Koei Co., Ltd.
• Principal Investigator: ITOH Takahiro 日本工営株式会社中央研究所, 総合技術開発第1部, 課長 (80334035)
• Research Collaborator: FUJITA Masaharu 京都大学防災研究所, 教授 ; TSUTSUMI Daizo 京都大学・防災研究所, 穂高砂防観測所, 准教授 ; MIYATA Syusuke 京都大学・防災研究所, 穂高砂防観測所, 助教 ; UTSUNOMIYA Rei JFEアドバンテック(株), 課長
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 掃流砂量 / 荷重計 / 相互相関 / 連続計測 / LVPセンサー

Outline of Final Research Achievements

Bedload sensor was developed, and the applicability was confirmed experimentally. The sensor was mechanically developed and countermeasure for internal pressure was conducted to keep measurements by submerged loadcell. Bedload discharge rate was calculated by weight measured by loadcell and the correlation in velocity between water on the bed and representative velocity of sediment layer. The relation in bedload rate between calculation and measurement was evaluated and the universal constants between them were obtained experimentally. LVP sensor, which was consisted from loadcell, pressure sensor and vibration sensor, was also developed through the knowledge of bedload sensor, and the sensor was for debris flow detections. The developed LVP sensor was confirmed for filed measurement usage.

Free Research Field

土砂水理学