掲載雑誌(和): 土木学会論文集 III 巻: -巻 号: 382/III-7号 頁: 73‐82頁 年: 1987年 月: 6月 著者(和): 柳谷俊,寺田まこと, 山田浩陽 タイトル(和): 弾性波CTでみた岩石の断層形成過程 抄録(和):
- キーワード(和): - 掲載雑誌(英): JOURNAL OF GEOTECHNICAL ENGINEERING 著者(英): タイトル(英): The observation of faulting process in rock by computer tomography. 抄録(英):
Seismic CT was emproyed to observe how dilatancy of rock localizes before faulting. The seismic CT can map the spatial distribution of P wave velocities. Since P wave velocity is determined by the extent of dilatancy (dencity, orientation, and aspect ratio of microcracks), mapping the seismic pofile is useful for observing nondestructively the progressive deplopment of dilatancy. The specimen of Ohshima granite was compressed at a constant deformation rate under uniaxial stress.The reconstructions were made within the plane perpendicular to the loading axis. The maps clealy show the metamorphic changes of dilatany before faulting ; at first the formation of diffuse dilatancy occured, the localization of dilatancy to a few near-surface areas followed at the next stage キーワード(英): - 記事区分 - 区分     論文集