Electromagnetic response during failure process including pre-phenomenon of gouge-bearing rock

破坏过程中的电磁响应，包括含泥岩的预现象

• 批准号: 23651173
• 负责人: NAKAGAWA Koichi
• 金额: $ 2.41万
• 依托单位: Osaka City 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 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23651173/
• 关键词: せん断分極; 断層粘土; 岩盤破壊; 震源過程; 地すべり; 間隙水の化学; 破壊予測; 年度の物理化学; ガウジ; スティックスリップ; 自然電位; 地震予知; せん断分局; 粘土特性; Shear-Induced Potential; 破壊予知; 粘土の物理化学作用

It has been clarified that the gouge is polarized electrically (SIP: Shear-induced Polarization) by shear deformation. To solve the mechanism of SIP, the time variation of electrolyte concentration was measured in pore water of the kaolinite squeezed out under the compaction loading. The changing manner of the electrolyte concentration depends on the magnitude of compaction load, however, the concentration decreases with time generally. On the other hand, in the large loading cycle, the rapid increasing of the concentration was observed during the primary consolidation. This rapid increasing of the electrolyte concentration is interpreted as result of the collapsing inter-particle bonding of the clay by the shearing. General decreasing of the concentration during the secondary consolidation may be recognized as result of structuring the inter-particle bonding in the clay.

已经明确的是，凿孔通过剪切变形而发生电极化（SIP：剪切诱导极化）。为了解决SIP的机理，测量了压实荷载下挤出的高岭石孔隙水中电解质浓度随时间的变化。电解质浓度的变化方式取决于压实载荷的大小，但是，浓度通常随着时间的推移而降低。另一方面，在大加载周期中，在初次固结过程中观察到浓度快速增加。电解质浓度的快速增加被解释为粘土颗粒间键合因剪切而瓦解的结果。二次固结过程中浓度的普遍降低可以被认为是粘土中颗粒间结合结构化的结果。

项目成果

ガウジの変わった性質とすべり破壊予測の可能性

凿孔的异常特性和预测滑动失效的可能性

• 发表时间: 2013
• 作者: 中川康一

Resistivity profiles and foundation structure of Central Tower, Bayon in Angkor

吴哥巴戎寺中央塔电阻率剖面及基础结构

• 发表时间: 2012
• 作者: K. Nakagawa;I. Shimoda;S. Yamada;R. Kanai;Y. Ogawa;Y. (Yasuda) Ohta;M. Fukuda;A. Jomori;T. Takahashi and Y. Iwasaki
• 通讯作者: T. Takahashi and Y. Iwasaki

仏念寺山断層帯に現れた断層露頭とその破砕特性

佛念寺山断裂带出现的断层露头及其断裂特征

• 发表时间: 2013
• 作者: 中川康一;Y. Iwasaki and K. Nakagawa;中川康一
• 通讯作者: 中川康一

Effects of vibration by demolition to nearby machine shop floor-wave measurement for dynamic property of ground

拆除振动对附近机加工车间地面动态特性的波测量的影响

• 发表时间: 2013
• 作者: 中川康一;Y. Iwasaki and K. Nakagawa
• 通讯作者: Y. Iwasaki and K. Nakagawa

Resistivity profiles and foundation structure of Central Tower, Bayon in Angkor, Geoengineering for construction and conservation of cultural heritage and historical sites

吴哥中央塔、巴戎寺的电阻率剖面和基础结构，文化遗产和历史遗迹建设和保护的地球工程

• 发表时间: 2012
• 作者: K. Nakagawa;I. Shimoda;S. Yamada;R. Kanai;Y. Ogawa;Y. (Yasuda) Ohta;M. Fukuda;A. Jomori;T. Takahashi and Y. Iwasaki
• 通讯作者: T. Takahashi and Y. Iwasaki