| 掲載雑誌（和）： | 岩盤力学に関するシンポジウム講演論文集 |
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| Vol： | 31巻 |
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| 年： |
2001年
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| 頁： |
176-180頁
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| 著者（和）： |
林 宏一，斎藤 秀樹
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| タイトル（和）： |
トンネル施工中の切羽起振点を用いた高精度屈折法地震探査による切羽前方予測
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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 OF ROCK MECHANICS
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| 著者（英）： |
Koichi HAYASHI,Hideki SAITO
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| タイトル（英）： |
PREDICTION AHEAD OF THE TUNNEL FACE BY HIGH RESOLUTION SEISMIC REFRACTION METHOD WITH SOURCES PLACED IN THE TUNNEL
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| 抄録（英）： |
The new data acquisition and analysis method has been introduced into the seismic refraction method in order to estimate the velocity ahead of the tunnel faces. The approach is the expansion of the high resolution seismic refraction method by using sources at the tunnel faces. At first, the surface seismic refraction method using sources and receivers only on the surface is performed in the investigation phase. Next, the data acquisition and analysis using in-tunnel sources are repeated in the construction phase. The data acquired in the investigation and construction phases is analyzed simultaneously. The numerical experiments of seismic refraction method including in-tunnel sources have been performed in order to show the efficiency of the method. The data without in-tunnel sources cannot delineate the velocity model clearly. As the number of in-tunnel sources increased, the resolution of reconstructed model increased. Specially, the velocity just ahｅａｄ of the tunnel faces can be estimated precisely.The method was applied to a tunnel site, and the analysis results agreed with the excavation records.
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| キーワード（英）： |
tunnel face,seismic refraction method,numerical and field examples
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| 記事区分： |
-
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| 区分： |
委員会論文集 |
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