書誌事項
- タイトル別名
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- Calibration of AE Measuring System by Detonator Test
- ディトネータテストによる3軸AE計測系の校正
- ディトネータ テスト ニ ヨル 3ジク AE ケイソクケイ ノ コウセイ
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抄録
A simple technique to calibrate a downhole AE system to locate subsurface cracks is presented. Cross-hole detonation tests were employed for the calibration. In situ P-wave velocity in the formations is estimated from the P-wave arrival time. A simple formula associated with an appropriate filtering is proposed to equalize the difference of the frequency dependent coupling of tri-axial accelerometers set in a downhole AE sonde. Consideration ofthe ray path and the coupling compensation reduces the mapping error.<BR>Data measured at Higashi Hachimantai Field supports the validity of this technique. The accuracy achieved in the mapping of the AE source lies within 10 degrees in all directions.
収録刊行物
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- 日本鑛業會誌
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日本鑛業會誌 103 (1195), 537-542, 1987
一般社団法人 資源・素材学会
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詳細情報 詳細情報について
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- CRID
- 1390001205982189440
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- NII論文ID
- 130007256102
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- NII書誌ID
- AN00188932
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- ISSN
- 21856729
- 03694194
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- NDL書誌ID
- 3152176
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- データソース種別
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- JaLC
- NDL
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- 抄録ライセンスフラグ
- 使用不可