The monitoring of the deformation of the slope and the time prediction Based on the stress-dilatancy of the soil

基于土体应力剪胀的边坡变形监测及时间预测

• 批准号: 23658130
• 负责人: SASAHARA Katsuo
• 金额: $ 2.41万
• 依托单位: Kochi 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 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-23658130/
• 关键词: 斜面崩壊; モニタリング; せん断ひずみ; ダイレイタンシー; 垂直ひずみ; 降雨; 土工; 切り土掘削; ひずみ増分比; 間隙水圧

The measurement of the deformation of the sandy model slope under artificial rainfall or cutting were conducted to examine whether the strain increment ratio (=compression strain increment/shear strain increment ratio) can shows the stress state in the slope before the failure. In the experiment with artificial rainfall, the compression strain increment at the bottom of the slope decreased with the increase of the shear strain and then became zero just before the failure of the slope. This fact shows the strain increment ratio can be a indicator of the instability of the slope.

通过对桑迪模型边坡在人工降雨和人工切割作用下的变形测量，检验了应变增量比（=压应变增量/剪应变增量比）能否反映边坡破坏前的应力状态。在人工降雨试验中，坡底压应变增量随剪应变的增加而减小，在边坡破坏前趋于零。这说明应变增量比可以作为边坡失稳的一个指标。

项目成果

Shear Deformation Development and the Increase of Pore Pressure due to Rainfall Infiltration in Sandy Model Slope under Different Inclination

不同倾角下砂模型边坡剪切变形发展及降雨入渗孔隙压力增大

• 发表时间: 2011
• 期刊: Int. J. of GEOMAT
• 作者: *Watanabe;S.(Ryukyu Univ.);Jones;T.(SCION-NewZealand);Isigaki;K.(Ryukyu Univ.);Imura;S.(Ryukyu Univ.);Baba;S.(Ryukyu Univ.);K.Sasahara & N.Sakai;笹原克夫,酒井直樹;笹原克夫;K.Sasahara;K.Sasahara;笹原克夫;伊藤和也;Sasahara K. and Sakai N.
• 通讯作者: Sasahara K. and Sakai N.

変位量計測に基づく斜面の安定度評価と崩壊発生予測のための新たな考え方

基于位移测量的边坡稳定性评价与破坏预测新思路

• 发表时间: 2013
• 作者: Naoki SAKAI;Katsuo SASAHARA;Tomohiro ISHIZAWA and Teruki FUKUZONO;Sasahara K.and Sakai N;笹原克夫;Katsuo Sasahara and Naoki Sakai;笹原克夫;笹原克夫
• 通讯作者: 笹原克夫

Shear deformation distribution and the variation of pore pressure in a sandy model slope during rainfall

降雨期间砂质模型边坡剪切变形分布及孔隙压力变化

• 发表时间: 2012
• 期刊: PROCEEDINGS OF THE 11th INTERNATIONAL AND 2nd NORTH AMERICAN SYMPOSIUM ON LANDSLIDES AND ENGINEERED SLOPES, BANFF, CANADA, 3-8 JUNE 2012
• 作者: *Watanabe;S.(Ryukyu Univ.);Jones;T.(SCION-NewZealand);Isigaki;K.(Ryukyu Univ.);Imura;S.(Ryukyu Univ.);Baba;S.(Ryukyu Univ.);K.Sasahara & N.Sakai;笹原克夫,酒井直樹;笹原克夫;K.Sasahara
• 通讯作者: K.Sasahara

Shear strain development and pore pressure distribution in sandy model slope under repeated rainfall

反复降雨条件下砂质模型边坡剪应变发展及孔隙压力分布

• 发表时间: 2012
• 期刊: Advances in transportation Geotechnics II (PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TARNSPORTATION GEOTECHNICS (2ND ICTG), HOKKAIDO, JAPAN, 10-12 SEPTEMBER 2012)
• 作者: *Watanabe;S.(Ryukyu Univ.);Jones;T.(SCION-NewZealand);Isigaki;K.(Ryukyu Univ.);Imura;S.(Ryukyu Univ.);Baba;S.(Ryukyu Univ.);K.Sasahara & N.Sakai;笹原克夫,酒井直樹;笹原克夫;K.Sasahara;K.Sasahara
• 通讯作者: K.Sasahara

降雨履歴が湿潤線降下に伴う斜面変形挙動に与える影響

降雨历史对与湿线下降相关的边坡变形行为的影响

• 发表时间: 2011
• 作者: 石澤友浩;笹原克夫,酒井直樹,福囿輝旗
• 通讯作者: 笹原克夫,酒井直樹,福囿輝旗