Study on physical and mineralogical factors that affect residual strength of landslide soil

影响滑坡土剩余强度的物理矿物学因素研究

• 批准号: 22780221
• 负责人: NAKAMURA Shinya
• 金额: $ 2.58万
• 依托单位: University of the Ryukyus
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22780221/
• 关键词: 残留強度; 配向性鉱物; 比表面積; リングせん断; 配向性粘度鉱物; 配向性粘土鉱物

In this study, we examined the physico-mineralogical properties, specific surface area and residual strength of soils collected from different landslides. The plotting of residual strength parameter as a function of total mineral content formed a chair-shaped curve, based on which we classify landslide soils into three distinct groups. The residual strength parameter had a tendency to decrease as the specific surface area increased. The statistical relationship that emerges out of this analysis allows all soils examined in the present study to be plotted near the regression curve. The results conclusively show that these relationships can elucidate the controlling factors and the mechanism of residual strength, and be used for predicting the residual strength parameter of a wide range of landslide soils that differ in terms of geology, soil type, mineralogical properties and shear strength.

在这项研究中，我们研究了物理矿物学性质，比表面积和剩余强度的土壤收集从不同的滑坡。剩余强度参数作为总矿物含量的函数的绘图形成椅子形曲线，在此基础上，我们将滑坡土分为三个不同的组。随着比表面积的增加，残余强度参数有降低的趋势。从这种分析中出现的统计关系允许在本研究中检查的所有土壤被绘制在回归曲线附近。研究结果表明，这些关系式可以阐明滑坡土剩余强度的控制因素和机理，并可用于预测不同地质、土类、矿物学性质和抗剪强度的滑坡土的剩余强度参数。

项目成果

Recovered strength of landslide soils and its relationship with re-consolidation time

滑坡土的恢复强度及其与再固结时间的关系

• 发表时间: 2011
• 作者: Eguchi;Y.;Nakamura;S.;Kimura;S. and Vithana;S. B.
• 通讯作者: S. B.

Estimation of average shear strengths along the slip surface of rainfall induced mudstone landslides

降雨引起的泥岩滑坡沿滑面平均剪切强度的估计

• 发表时间: 2011
• 作者: Nakamura;S.;and Kimura;S.
• 通讯作者: S.

Correlation of large displacement drained shear strength of landslide soils measured by direct shear and ring shear devices

• DOI: 10.1007/s10346-011-0301-9
• 发表时间: 2012-09-01
• 期刊: LANDSLIDES
• 影响因子: 6.7
• 作者: Vithana, Shriwantha Buddhi;Nakamura, Shinya;Kimura, Sho
• 通讯作者: Kimura, Sho

Shear Strength of Landslide Soils and its Measurement by Direct and Ring Shear Techniques

滑坡土的抗剪强度及其用直剪和环剪技术测量

• 发表时间: 2011
• 作者: Vithana;S. B.;Nakamura;S. and Yoshinaga;A.
• 通讯作者: A.

地すべり形態に応じたすべり面平均強度定数の合理的決定

根据滑坡形态合理确定滑面平均强度常数

• 发表时间: 2010
• 作者: 中村真也;木村匠;ヴィタナブッディシワンタ;宜保清一
• 通讯作者: 宜保清一