A study on the injection of particle into ground and its application by using the void diameter distribution

利用空隙直径分布研究颗粒注入地面及其应用

• 批准号: 07455189
• 负责人: UNO Takao
• 金额: $ 3.07万
• 依托单位: GIFU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07455189/
• 关键词: Void Diameter; Capillary Model; Air Intrusion Method; Particle Size; Injection Test; Jacking Method; Ring Shear Test; Fabric of Shear Band; 注入; 砂質土; 毛細管モデル

The distribution of soil void diameter is an important factor to express void structure and to select grout materials for the improvement of weak soils.For the air intrusion method proposed to measure the distribution of soil void diameter,(1) the adaptability of the method is verified on the measurement for both sand samples and artificial capillary tube model.For the comparison between the void diameter distribution by air intrusion method with the one estimated from moisture characteristic curve as three-dimensional evaluation,(2) the distributions by air intrusion method become more uniform than by moisture characteristic,(3) the mean void diameters by the method correspond to 80% to 90% of that by the moisture characteristic.Second, the relationship between sand void diameter measured by air intrusion method and sizes of injected particles are examined by injection test which particles are injected into sand column. As a result,(4) the sizes of injected particles is less than that of mean void diameter by 60%,(5) the sizes of the particles which stay uniformly through sand column is equivalent to 30% of the mean void diameter.Third, for the jacking method, the frictional resistance and the fabric, void diameter distribution of shear band occurring at the outskirts of jacking pipe are examined based on the ring shear test.

土的孔隙直径分布是表征孔隙结构和选择灌浆材料的重要因素，对于空气侵入法测量土的孔隙直径分布，（一）通过对砂样和人工毛细管模型的测量，验证了该方法的适用性，并将空气侵入法和（2）空气侵入法的分布比水分特征法的分布更均匀，（3）该方法的平均空隙直径相当于水分特征法的80%~ 90%，通过颗粒注入砂中的注入试验，研究了空气侵入法测得的砂体空隙直径与注入颗粒尺寸之间的关系柱结果表明：（4）喷射颗粒的粒径小于平均孔隙直径的60%，（5）在砂柱中均匀停留的颗粒的粒径相当于平均孔隙直径的30%。通过环剪试验，研究了顶进管外壁剪切带的空隙直径分布。

项目成果

中村 啓: "推進力に及ぼす地盤土質と管径の影響" 土木学会第51回年次学術講演会講演概要集第3部. 106-107 (1996)

Kei Nakamura：“土壤质量和管径对推进力的影响”第51届日本土木工程学会学术年会第3.106-107部分（1996）

UNO,Takao: "The Relationship between Particle size and Void Diameter for Sand" Proceedings of Geofilters '96. 67-74 (1996)

UNO，Takao：“沙子的粒径和空隙直径之间的关系”Geofilters 96 论文集。

Takao Uno: "The Relationship between Particle Size and Void Diameter for Sand" Proc. of 2nd Int. Conf. on Geofilters. (発表予定). (1996)

Takao Uno：“砂粒尺寸与空隙直径之间的关系”，第二届国际地质过滤器会议论文（即将发表）。

宇野 尚雄: "「空気圧入法」と水分特性曲線手法による砂の間隙径分布の対比" 第32回地盤工学研究発表会平成9年度発表講演集. (発表予定). (1997)

Nao Uno：“使用空气注入法和水分特征曲线法进行砂孔径分布的比较”1997年第32届岩土工程研究会议论文集（待发表）。

中村 啓: "推進力低下に及ぼす滑材とマニュキュア効果の考察" 第7回非開削技術研究発表会論文集. 53-60 (1996)

Kei Nakamura：“考虑润滑剂和指甲油对推进力降低的影响”第七届非开挖技术研究会议论文集 53-60 (1996)。