SAFETY SURVEILLANCE OF AN ARCH DAM UNDER CONSTRUCTION DURING SECONDARY COOLING AND GROUTING BY ACOUSTIC EMISSION

• MINEMURA Osamu

  JAPAN SOCIETY OF CIVIL ENGINEERS

• SAKATA Noboru

  JAPAN SOCIETY OF CIVIL ENGINEERS

• YUYAMA Shigenori

  JAPAN SOCIETY OF CIVIL ENGINEERS

• OKAMOTO Takahisa

  JAPAN SOCIETY OF CIVIL ENGINEERS

• MARUYAMA Kyuichi

  JAPAN SOCIETY OF CIVIL ENGINEERS

Bibliographic Information

Other Title

• アーチダムの二次クーリング時およびジョイントグラウティング時におけるAE法適用性の検討
• アーチダム ノ 2ジ クーリングジ オヨビ ジョイントグラウティングジ ニ オケル AEホウ テキヨウセイ ノ ケントウ

Abstract

Acoustic Emission (AE) was applied in order to ensure the safety of an arch dam under construction. AE was monitored during secondary cooling and grouting between dam blocks. Quantitative AE waveform analysis based on the moment tensor analysis was performed as well as conventional AE parameter measurement. Low frequency AE sensors (15kHz resonant) were employed to detect AE signals generated in the dam concrete. Twelve sensors were installed at the dam surface and four of them were mounted on the floor of an inspection gallery inside the dam blocks. Neither critical AE activity nor intense AE cluster was found during the AE monitoring. It was concluded that the dam was safe during the secondary cooling and the grouting.

Journal

• Doboku Gakkai Ronbunshu

  Doboku Gakkai Ronbunshu 1999 (634), 103-112, 1999-11-20

  Japan Society of Civil Engineers

Keywords

• acoustic emission
• arch dam
• joint grouting
• moment tensor analysis
• secondary cooling
• safety surveillance

Details

• CRID: 1390001205308641280
• NII Article ID: 130003801450
• NII Article ID: 10004445177
• NII Book ID: AN10014020
• DOI: 10.2208/jscej.1999.634_103
• ISSN: 18827187
• ISSN: 02897806
• NDL BIB ID: 4928965
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4928965
• Web Site: https://www.jstage.jst.go.jp/article/jscej1984/1999/634/1999_634_103/_pdf
• Data Source:
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  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed