掲載雑誌（和）：
岩盤力学に関するシンポジウム講演論文集
Vol：
21巻
年：
1989年
頁：
26-30頁
著者（和）：
浜島 良吉， 山田 俊雄， 小出 仁
タイトル（和）：
地震断層における雁行配列の形成
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抄録（和）：
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キーワード（和）：
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掲載雑誌（英）：
PROCEEDINGS OF THE SYMPOSIUM ON ROCK MECHANICS
著者（英）：
Ryoukichi HAMAJIMA, Toshio YAMADA, Hitoshi KOIDE
タイトル（英）：
FORMATION OF EN ECHELON ARRANGEMENT OF EARTHQUAKE FAULTS
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抄録（英）：
Most of earthquake faults appear as sets of numerous fractures arranged en echelon. Deformation experiments of rocks under tri-axial stresses and clay-model experiments, also, suggest the discontinuous propagation of faults in rocks under compression. The discontinuous portion of en echelon faukts stand against the displacement of rock bodies along the faults. the failure of discontinuity of en echelon faults triggers a large earthquake. In this study, numerical analyses by the Rigid-Body-Spring-Model(RBSM) were carried out to simulate the echelon propagation of earthquake faults. The RBSM is a kind of discrete elements connected each others with springs along their boundaries. The calculation results show the en echelon propagation of fractures similar to the earthquake faults and fracturing experiments. The results clearly suggest the formation of quiescent area of earthquake activity which is an important precursory phenomenon for large earthquake.
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キーワード（英）：
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記事区分：
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区分
委員会論文集