Self-sealability of fractures in rock and its application to fracture and strength control

岩石裂缝的自封闭性及其在裂缝和强度控制中的应用

• 批准号: 22246114
• 负责人: KANEKO Katsuhiko
• 金额: $ 25.96万
• 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: 2010
• 资助国家: 日本
• 起止时间: 2010-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-22246114/
• 关键词: 地殻工学; 岩石; 自己修復; 亀裂; 破壊力学; 長期強度; X線CT; 亀裂充填; ３次元画像解析; EPMA; ３次元画像処理; ダブルトーション試験; 3次元画像処理

A series of experimental studies on the sealability of fracture has been performed and its application to geotechnical engineering has been discussed. Firstly, analyzing the influence of environments on the sub-critical crack growth in rock, the mechanism of crack growth has been clarified. Secondarily, the self-sealing process of fracture in the rocklike material in water was investigated and the mechanism of self-sealing was clarified. Thirdly, the process of fracture propagation was analyzed numerically and a design method to control fracture propagation, i.e., crack orientation and so on. From these results, a method to estimate the long-term strength of rock has been proposed. Furthermore it is pointed out that the strength of rock can be controlled by controlling the environmental condition.

对裂隙的封闭性进行了一系列的试验研究，并探讨了裂隙封闭性在岩土工程中的应用。首先，分析了环境对岩石亚临界裂纹扩展的影响，阐明了裂纹扩展的机理。其次，研究了岩石类材料在水中的裂缝自封闭过程，阐明了自封闭机理。再次，对裂缝扩展过程进行了数值分析，提出了控制裂缝扩展的设计方法，根据这些结果，提出了一种估算岩石长期强度的方法。指出岩石强度可以通过控制环境条件来控制。

项目成果

地盤注入工法分野での生分解性プラスチックを用いた注入管の適用性検討

可生物降解塑料注入管在地面注入方式领域的适用性研究

• 发表时间: 2010
• 期刊: 地盤工学ジャーナル
• 作者: 寺島麗;島田俊介;小山忠雄;川崎了
• 通讯作者: 川崎了

Electro-Biogrouting and Its Challenge

电生物灌浆及其挑战

• 发表时间: 2012
• 期刊: International Journal of Electrochemical Science
• 影响因子: 1.5
• 作者: H.A.Keykha;B.B.K.Huat;A.Asadi and S.Kawasaki
• 通讯作者: A.Asadi and S.Kawasaki

Estimation of regional stress state and Young’s modulus by back analysis of mining-induced deformation

• DOI: 10.1016/j.ijrmms.2013.05.007
• 发表时间: 2013-10
• 期刊: International Journal of Rock Mechanics and Mining Sciences
• 影响因子: 7.2
• 作者: J. Kodama;T. Miyamoto;S. Kawasaki;Y. Fujii;K. Kaneko;P. Hagan

Effects of relative humidity and temperature on subcritical crack growth in igneous rock

• DOI: 10.1016/j.ijrmms.2010.04.009
• 发表时间: 2010-06
• 期刊: International Journal of Rock Mechanics and Mining Sciences
• 影响因子: 7.2
• 作者: Y. Nara;N. Hiroyoshi;T. Yoneda;K. Kaneko

電解質濃度の異なる水中における白浜砂岩のサブクリティカルき裂進展

白滨砂岩在不同电解质浓度水中的亚临界裂纹扩展

• 发表时间: 2012
• 期刊: 材料
• 作者: 奈良禎太;広吉直樹;米田哲朗;金子勝比古
• 通讯作者: 金子勝比古