2013 Fiscal Year Final Research Report

Challenge to propose a new erosion failure criteria of soil

Research Project

Project/Area Number	23656293
Research Category	Grant-in-Aid for Challenging Exploratory Research
Allocation Type	Multi-year Fund
Research Field	Geotechnical engineering
Research Institution	Tohoku University
Principal Investigator	KAZAMA MOTOKI 東北大学, 工学(系)研究科(研究院), 教授 (20261597)
Project Period (FY)	2011 – 2013
Keywords	浸透破壊 / パイピング / 土砂流失 / 拘束圧
Research Abstract	To study a phenomena of erosion failure of soils as a soil element, an experimental apparatus was developed. The apparatus make it possible to apply arbitrary confining pressure and internal water pressure, and to reproduce erosion failure of soils by spilling out soil particle from the opening of pipe. By using the apparatus, it is possible to evaluate the resistance of soil material against to erosion failure. As a result of the experiment, it was found that the larger the initial confining pressure, the smaller the erosion velocity of soil particles, and it was also found that the confining pressure effect on erosion failure experimentally.

(4 results)