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Stress estimation around the survey wells in Hanshin-Awaji area by means of AE/DR and DSCA experiments; AE/DR ho to DSCA ho ni yoru Hanshin Awaji chiiki chosa kui shuhen no chikaku oryoku sokutei

Abstract

A total of 5 wells were excavated in the Hanshin-Awaji area (Ikeda, Takarazuka, Tarumi, Hirabayashi and Ikunami) to collect the core samples, which were analyzed by the AE/DR and DSCA methods to determine crustal stresses. For the AE/DR analysis, the core sample was cut in the vertical direction, and in the horizontal direction at intervals of 45{degree}. The sample of unknown orientation was provided with a datum line common for both methods, to compare the results by these methods. A load was applied to the sample, provided with an AE sensor and strain gauge on the sides, in the longitudinal direction. For the DSCA analysis, the core sample was cut into a cube having a side length of 33mm, with a pair of planes directed in parallel to the datum line. A total of 18 strain gauges, 10mm in gauge length, were attached to the cube. The AE/DR analysis gave the maximum and minimum principal stresses in the horizontal plane and stresses in the vertical direction, whereas the DSCA the maximum, intermediate and minimum principal stresses. 3 refs., 7 figs.
Authors:
Ito, H; Kuwahara, Y; Nishizawa, O; [1]  Yamamoto, K; [2]  Sano, O; [3]  Yokoyama, T; Kudo, R; [4]  Xue, Z [5] 
  1. Geological Survey of Japan, Tsukuba (Japan)
  2. Tohoku University, Sendai (Japan). Faculty of Science
  3. Yamaguchi University, Yamaguchi (Japan). Faculty of Engineering
  4. OYO Corp., Tokyo (Japan)
  5. Kiso-Jiban Consultants Co. Ltd., Tokyo (Japan)
Publication Date:
May 01, 1996
Product Type:
Conference
Report Number:
CONF-9605233-
Reference Number:
SCA: 580000; PA: NEDO-96:913438; EDB-96:173339; SN: 96001687044
Resource Relation:
Conference: 94. SEGJ (The Society of Exploration Geophysicists of Japan) Conference, Butsuri tansa gakkai dai 94 kai (1996 nendo shunki) gakujutsu koenkai, Tokyo (Japan), 15-17 May 1996; Other Information: PBD: May 1996; Related Information: Is Part Of Proceedings of the 94th SEGJ (The Society of Exploration Geophysicists of Japan) Conference; PB: 475 p.; Butsuri tansa gakkai dai 94 kai (1996 nendo shunki) gakujutsu koenkai koen ronbunshu
Subject:
58 GEOSCIENCES; STRESS ANALYSIS; EARTH CRUST; LOADING; WELL DRILLING; DRILL CORES; DEFORMATION; STRAIN GAGES; CRACKS; EARTHQUAKES
OSTI ID:
395474
Research Organizations:
Society of Exploration Geophysicists of Japan, Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE97709027; TRN: 96:913438
Availability:
Available from The Society of Exploration Geophysicists of Japan, 2-18, Nakamagome 2-chome, Ota-ku, Tokyo, Japan; OSTI as DE97709027
Submitting Site:
NEDO
Size:
pp. 36-38
Announcement Date:

Citation Formats

Ito, H, Kuwahara, Y, Nishizawa, O, Yamamoto, K, Sano, O, Yokoyama, T, Kudo, R, and Xue, Z. Stress estimation around the survey wells in Hanshin-Awaji area by means of AE/DR and DSCA experiments; AE/DR ho to DSCA ho ni yoru Hanshin Awaji chiiki chosa kui shuhen no chikaku oryoku sokutei. Japan: N. p., 1996. Web.
Ito, H, Kuwahara, Y, Nishizawa, O, Yamamoto, K, Sano, O, Yokoyama, T, Kudo, R, & Xue, Z. Stress estimation around the survey wells in Hanshin-Awaji area by means of AE/DR and DSCA experiments; AE/DR ho to DSCA ho ni yoru Hanshin Awaji chiiki chosa kui shuhen no chikaku oryoku sokutei. Japan.
Ito, H, Kuwahara, Y, Nishizawa, O, Yamamoto, K, Sano, O, Yokoyama, T, Kudo, R, and Xue, Z. 1996. "Stress estimation around the survey wells in Hanshin-Awaji area by means of AE/DR and DSCA experiments; AE/DR ho to DSCA ho ni yoru Hanshin Awaji chiiki chosa kui shuhen no chikaku oryoku sokutei." Japan.
@misc{etde_395474,
title = {Stress estimation around the survey wells in Hanshin-Awaji area by means of AE/DR and DSCA experiments; AE/DR ho to DSCA ho ni yoru Hanshin Awaji chiiki chosa kui shuhen no chikaku oryoku sokutei}
author = {Ito, H, Kuwahara, Y, Nishizawa, O, Yamamoto, K, Sano, O, Yokoyama, T, Kudo, R, and Xue, Z}
abstractNote = {A total of 5 wells were excavated in the Hanshin-Awaji area (Ikeda, Takarazuka, Tarumi, Hirabayashi and Ikunami) to collect the core samples, which were analyzed by the AE/DR and DSCA methods to determine crustal stresses. For the AE/DR analysis, the core sample was cut in the vertical direction, and in the horizontal direction at intervals of 45{degree}. The sample of unknown orientation was provided with a datum line common for both methods, to compare the results by these methods. A load was applied to the sample, provided with an AE sensor and strain gauge on the sides, in the longitudinal direction. For the DSCA analysis, the core sample was cut into a cube having a side length of 33mm, with a pair of planes directed in parallel to the datum line. A total of 18 strain gauges, 10mm in gauge length, were attached to the cube. The AE/DR analysis gave the maximum and minimum principal stresses in the horizontal plane and stresses in the vertical direction, whereas the DSCA the maximum, intermediate and minimum principal stresses. 3 refs., 7 figs.}
place = {Japan}
year = {1996}
month = {May}
}