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タイトル: | 生野鉱山内の山はねによる震動 |
その他のタイトル: | GROUND TREMORS CAUSED BY ROCK BURSTS IN THE IKUNO MINE |
著者: | 田中, 豊 西田, 良平 |
著者名の別形: | TANAKA, Yutaka NISHIDA, Ryohei |
発行日: | 1-Apr-1971 |
出版者: | 京都大学防災研究所 |
誌名: | 京都大学防災研究所年報. A |
巻: | 14 |
号: | A |
開始ページ: | 149 |
終了ページ: | 164 |
抄録: | Rock burst occurred at the Ikuno mine in the central part of Hyogo prefecture on Jan. 26, 1970.Coincidently, ground tremors were also observed by the network for micro-earthquake observationstations in the prefecture and it is evident that the origin of tremors coincided with the rock burstarea.Energy release in the origin estimated as 3 x 10" ergs from the analysis of microseismogram andthis value coincides almost with the strain energies estimated from the situation of the brokendomain and the strength of rocks.An exact source-mechanism for the tremors could not be obtained. However it seems that thedirection of the principal stress (E-W) inferred from the seismic data was perpendicular to thevein-plane near the scene and a null vector of focal sphere was within the plane.Moreover, the E-W direction was the same as that of the tectonic forces in the prefecture.It is interesting to note the frequency of the rock burst and the active epoch of the seismic belt nearIkuno coincided with each other. |
URI: | http://hdl.handle.net/2433/69537 |
関連リンク: | http://www.dpri.kyoto-u.ac.jp/nenpo/nenpo.html |
出現コレクション: | No.14 A |
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