Research on sustainable slope stability system by combined earth reinforcement technology against mainly infiltration of rainfall

主要针对降雨入渗的组合土加固技术边坡可持续稳定体系研究

• 批准号: 19310123
• 负责人: YASUFUKU Noriyuki
• 金额: $ 12.73万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19310123/
• 关键词: 地盤災害; 斜面安定; モニタリング; 非破壊健全度診断; 地盤補強; 地盤改良; 防災システム; 併用型補強; 補強技術; 豪雨災害; 気候変動

In this study, experimental and numerical pullout are carried out in order to investigate the influence of infiltration on the interaction between soil-geogrid paying attention to the compaction effect and confining effect, together with a series of erosion protecting tests of soil chemical improved ground due to rainfall. The compaction could enhance the pullout strength of embedded geogrid efficiently, and the chemical improved ground with proper compaction could give a proper resistance against erosion. However, the compaction could not mitigate the influence of infiltration on the pullout strength. In addition, the falling weight deformation apparatus (FWD) which has been developed at geotechnical engineering laboratory of Kyushu University was improved to evaluate the degree of slope soundness. The apparatus has a light weight and has also an advantage as a non destructive way for slopes. It is instrumented with a drop-weight machine to measure the deformation modulus. The effectiveness of the improved FWD was verified by measuring the surface deformation modulus of model and actual slope due to rainfall , paying attention to the degree of compaction.

本研究以土工格栅为研究对象，在考虑压实效应和围护效应的基础上，进行了入渗对土工格栅-土工格栅相互作用影响的试验和数值拔出试验，并对降雨作用下的土壤化学改良地基进行了一系列防蚀试验。压实能有效地提高埋入土工格栅的抗拔强度，适当压实的化学改良地基具有较好的抗冲刷能力。但压实不能缓解渗透对土体抗拔强度的影响。此外，对九州大学岩土工程实验室研制的落锤式变形仪(FWD)进行了改进，以评价边坡的安定性。该仪器重量轻，作为一种非破坏性的斜坡检测方法也具有优势。用落锤机测量变形模数。通过测量模型和实际边坡在降雨作用下的地表变形模数，并考虑压实度，验证了改进后的FWD方法的有效性。

项目成果

携帯型の非破壊斜面健全度評価装置の特色とその用途に関する検討

便携式无损边坡健康评价装置的特点及应用研究

• 发表时间: 2009
• 作者: 二宮;安福;大嶺;小林
• 通讯作者: 小林

CORRELATION OF EROSION RATES WITH THE STRENGTH OF HIGH ERODIBLE VOLCANIC ASH SANDY SOIL

侵蚀速率与高侵蚀性火山灰砂土强度的相关性

• 发表时间: 2008
• 作者: 二宮;安福;大嶺;小林;安福 規之(代表)
• 通讯作者: 安福 規之(代表)

Erosion Rates of Soils Improved by Chemical Additives for Protection against Overland Flow

通过化学添加剂提高土壤侵蚀率以防止地表径流

• 发表时间: 2007
• 期刊: Memoirs of the Faculty of Engineering, Kyushu University 67(4)
• 作者: A. Islam;N. Yasufuku
• 通讯作者: N. Yasufuku

Developing of Automatic Soil Water Retention Test System

土壤保水性自动测试系统的研制

• 发表时间: 2010
• 作者: Islam Awad;et. al.,;二宮久;安福;新開・安福・大嶺・小林;劉強・安福・大嶺・小林
• 通讯作者: 劉強・安福・大嶺・小林

締め固め度に着目した降雨浸透における斜面の健全度評価に関する基礎的研究

以压实度为重点的降雨入渗边坡健康评价基础研究

• 发表时间: 2010
• 作者: Islam Awad;et. al.,;二宮久
• 通讯作者: 二宮久