Stability evaluation of volcanic slopes in cold regions

寒冷地区火山边坡稳定性评价

• 批准号: 23241056
• 负责人: MIURA SEIICHI
• 金额: $ 25.88万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-23241056/
• 关键词: 地盤工学; 土砂災害; 防災; 火山灰質土; 凍結融解履歴; 斜面崩壊; 現地計測

The aim of this study is to reveal the failure mechanism of volcanic slopes in cold regions and to propose a prediction method on failure. To achieve the purposes, full-scale embankments were constructed under several conditions in Sapporo, Japan. A typical volcanic soil in the field was adopted as a soil material. After construction of embankments, changes in soil moisture, temperature, pore water pressure were investigated using devices such as soil moisture meters, etc. Simultaneously, a series of model tests was performed on small size slopes formed by the same material as that in the field to compare with the mechanical behavior of embankments. A series of triaxial tests was also conducted on compacted volcanic soils subjected to freeze-thaw cycles using a new apparatus. As a result, a reasonable prediction method of failure was proposed based on changes in water content, and its validity was confirmed.

这项研究的目的是揭示寒冷区域中火山斜率的故障机制，并提出了一种关于失败的预测方法。为了实现目的，在日本萨波罗的几个条件下建造了全尺寸路堤。该田间的典型火山土壤被用作土壤材料。建造路堤后，使用诸如土壤水分仪等设备等设备研究了土壤水分，温度，孔隙水压的变化。同时，对与野外相同材料形成的小型斜率进行了一系列模型测试，以与田间相同的材料与托架的机械行为相比。还对使用新设备进行冻融周期的压实火山土壤进行了一系列三轴测试。结果，根据水含量的变化提出了合理的预测方法，并确认了其有效性。

项目成果

Mechanical properties and soil fabric of compacted embankment

压实路堤力学特性及土结构

• 发表时间: 2012
• 期刊: Proceedings of International conference on gound improvement and ground control (IGCI Wollongong 2012)
• 作者: Shoji Yokohama;Seiichi Miura and Satoshi Matsumura
• 通讯作者: Seiichi Miura and Satoshi Matsumura

Field monitoring of volcanic slope subjected to freezing and thawing and its evaluation

冻融作用下火山坡的现场监测与评价

• 发表时间: 2012
• 期刊: Geotechnical Special Publications, ASCE
• 作者: S.Kawamura;S.Miura
• 通讯作者: S.Miura

盛土材の非排水せん断特性に及ぼす締固め条件の影響

压实条件对路堤材料不排水剪切性能的影响

• 发表时间: 2012
• 期刊: 地盤工学会北海道支部技術報告集
• 作者: 伊藤啓介;横浜勝司;三浦清一;松村聡
• 通讯作者: 松村聡

echanical properties and soil fabric of compacted embankment

压实路堤的力学特性和土结构

• 发表时间: 2012
• 作者: Aramaki O;Chalermsarp N;Otsuki M;Tagami J;Azuma M;S.Yokohama
• 通讯作者: S.Yokohama

締固め度管理された盛土の耐震性能評価に関する研究

控制压实度路堤抗震性能评价研究

• 发表时间: 2012
• 期刊: 地盤工学会北海道支部技術報告集
• 作者: 松村聡;三浦清一;横浜勝司;高田諒平
• 通讯作者: 高田諒平