Solution of problem on SIP (Shear-induced Polarization) in fault gouges and the development to the field observations.

断层泥中SIP（剪切诱发极化）问题的解决及现场观测的发展。

• 批准号: 15310132
• 负责人: NAKAGAWA Koichi
• 金额: $ 9.22万
• 依托单位: Osaka City University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15310132/
• 关键词: SIP(Shear-induced polarization); Fault gouge; Spontaneous potential; Landslide; Earthquake prediction; Electromagnetic anomaly; Shear deformation of clay; Electric double layer; ガウジ; 断層破壊; せん断分極(SIP); 岩石物性; 破壊予知; SIP(Shear Induced Polarizatio

An experimental study on the electrical potential induced in fault gouge materials accompanying with their shear deformation have been carried out. Some electrical polarizations could be observed in common saturated fine aggregates, such as clay during the shear deformation test in laboratory. This phenomenon is called SIP (Shear-induced Polarization). This phenomenon of SIP can be interpreted in terms of physicochemical interaction between fine particle and interstitial water with electrolyte. However, the SIP was not detected in the remolded clay for handicraft-use which treated with some non-dipole oil.The plane shear strain test was performed to clarify the relation of the polarity of induced potential with deformation and the sense of strain. Sign of electric charge generated on the plane of maximum strain axis (tensional) was plus, that on the plane of minimum strain axis was minus and that on the plane of intermediate strain axis was neutral. This characteristic property was confirmed in gouge sample by the other kind of deformation test.We observed SIP at sites of landslide by measurement of the spontaneous potential. The sites locate at large scale of landslide areas of Busuno landslide area in Jouetsu City, Niigata Prefecture, Northeast Japan and Nuta Yone landslide area in Nagaoka, Kochi Prefecture, Shikoku, Japan. The spontaneous potential changes with increasing the displacement of landslide. The large discontinuity of the electric potential distribution was observed at the boundary of landslide blocks. The senses of electric potential observed at landslide fields coincided with those senses obtained from the model experiments in the laboratory.

对断层泥材料中伴随剪切变形的感应电势进行了实验研究。在实验室剪切变形试验中，可以在常见的饱和细骨料（例如粘土）中观察到一些电极化。这种现象称为 SIP（​​剪切诱导极化）。这种 SIP 现象可以用细颗粒和间隙水与电解质之间的物理化学相互作用来解释。然而，在经过一些非偶极油处理的工艺品用重塑粘土中没有检测到SIP。通过平面剪应变试验来阐明感应电势的极性与变形和应变感的关系。最大应变轴（张力）平面上产生的电荷符号为正，最小应变轴平面上产生的电荷符号为负，中间应变轴平面上产生的电荷符号为中性。这种特性在凿岩样品中通过另一种变形试验得到了证实。我们通过测量自发电位来观察滑坡现场的SIP。这些地点位于日本东北部新泻县上越市的Busuno滑坡地区和日本四国高知县长冈市的Nuta Yone滑坡地区的大规模滑坡地区。自发电位随着滑坡位移的增加而变化。在滑坡块的边界处观察到电位分布的大的不连续性。在滑坡场观察到的电势感与实验室模型实验获得的电势感相一致。

项目成果

Acquisition, processing and interpretation of shallow seismic reflection profile across Uemachi Fault, along Yamato River, Osaka. Japan,

大阪大和河沿岸上町断层浅层地震反射剖面的采集、处理和解释。

• 发表时间: 2003
• 期刊: Jour. Geosci., Osaka City University, 46
• 作者: Rashed;M.;et al.
• 通讯作者: et al.

中川 康一: "近畿地方の地質と地質構造"基礎工. 32・2. 2-5 (2004)

中川浩一：“近畿地区的地质和地质结构”基础工程32・2（2004）。

Integration of a nine-kilometer long seismic section from several seismic profiles along the Yamato River, Osaka, Japan,

日本大阪大和河沿岸多个地震剖面的九公里长地震剖面的整合，

• 发表时间: 2004
• 期刊: Jour. Geosci., Osaka City University 47
• 作者: NakagawaK.;RashedM.;SugiyamaY.
• 通讯作者: SugiyamaY.

近畿地方の地質と地質構造

近畿地区的地质和地质构造

• 发表时间: 2004
• 期刊: 基礎工 32(3)
• 作者: Fukuzumi T.;Nemoto H.;Nakagaewa K.;中川康一
• 通讯作者: 中川康一

Acquisition, processing and interpretation of shallow seismic reflection profile across Uemachi Fault, along Yamato River, Osaka, Japan

日本大阪大和河沿岸上町断层浅层地震反射剖面的采集、处理和解释

• 发表时间: 2003
• 期刊: Jour.Geosci., Osaka City University vol.46
• 作者: Rashed;M.;Kawamura;D.;Nakamukae;M.;Fukuzumi;T.;Nishino;H.;Yamada;S.;Nemoto H.;Nakagawa;K.;Tonoko;N.;Fujii;T.;Ono;N.
• 通讯作者: N.