Challenge to propose a new erosion failure criteria of soil

挑战提出新的土壤侵蚀破坏标准

• 批准号: 23656293
• 负责人: KAZAMA MOTOKI
• 金额: $ 2万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23656293/
• 关键词: 浸透破壊; パイピング; 土砂流失; 拘束圧; 土粒子の流失; 侵食; せん断破壊; 細粒分; 破壊基準; 要素試験; 陥没事故

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.

为了研究作为土元的土的侵蚀破坏现象，研制了一种试验装置。该装置可以施加任意围压和内水压，并通过从管道开口溢出土壤颗粒来重现土壤的侵蚀破坏。通过使用该仪器，可以评估土壤材料对侵蚀破坏的抵抗力。实验结果发现，初始围压越大，土壤颗粒的侵蚀速度越小，围压对侵蚀破坏也有实验影响。

项目成果

破損管路部からの土粒子流出による地盤の陥没破壊に対する水理及び拘束圧境界条件の影響に関する実験的研究

水力学和围压边界条件对破碎管段土粒流出地面塌陷破坏影响的试验研究

• 发表时间: 2014
• 作者: 稲垣和哉;森 友宏;河井 正;風間基樹
• 通讯作者: 風間基樹

破損管路部からの土粒子の流出特性に及ぼす拘束圧の影響について

围压对破管土颗粒流出特性的影响

• 发表时间: 2014
• 作者: 稲垣和哉;山崎智哉;風間基樹;森友宏;河井正
• 通讯作者: 河井正

Effects of Stress State and Hydraulic Conditions on Soil Erodibility for Cohesionless Soils in Contact with Damage Pipes

应力状态和水力条件对与损坏管接触的无粘性土的土壤侵蚀性的影响

• 发表时间: 2013
• 期刊: Advances in Geotechnical Infrastructure
• 作者: R.Moncada;Y. Nakajima;T. Mori;T;Kawaiand M. Kazama
• 通讯作者: Kawaiand M. Kazama

EFFECTS OF STRESS STATE AND HYDRAULIC CONDITIONS ON SOIL ERODIBILITY FOR COHESIONLESS SOILS IN CONTACT WITH DAMAGED PIPES

应力状态和水力条件对与损坏管道接触的无粘性土壤侵蚀性的影响

• 发表时间: 2013
• 作者: R. Moncada;Y. Nakajima;T. Mori;T. Kawai and M. Kazama
• 通讯作者: T. Kawai and M. Kazama