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Seismic Velocity Structure of the EDZ Around Drifts at the Kamaishi and Tono Mines in Japan

Published online by Cambridge University Press:  10 February 2011

T. Sato ,
H. Matsui ,
T. Kikuchi ,
K. Sugihara  and
S. Okubo
T. Sato
Affiliation:
Tono Geoscience Center, Power Reactor and Nuclear Fuel Development Corporation
H. Matsui
Affiliation:
Tono Geoscience Center, Power Reactor and Nuclear Fuel Development Corporation
T. Kikuchi
Affiliation:
Tono Geoscience Center, Power Reactor and Nuclear Fuel Development Corporation
K. Sugihara
Affiliation:
Tono Geoscience Center, Power Reactor and Nuclear Fuel Development Corporation
S. Okubo
Affiliation:
Geo-System Engineering, The University of Tokyo
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Abstract

The excavation disturbed zone (EDZ) is defined as the rock zone where rock properties and conditions have been changed due to the processes induced by excavation, such as excavation damage, stress redistribution and desaturation. In-situ excavation disturbance experiment has been performed to determine the rock properties and width of the EDZ at the Kamaishi and Tono mines in Japan. Rock mass fails when blasting vibration velocity exceeds limit velocity so that we can estimate excavation damaged zone from vibration measurement. The width of the zone where blasting vibration velocity exceeded the limit velocity is roughly consistent with the width of low seismic velocity layer detected from the seismic refraction survey at both mines.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 506: Symposium – Scientific Basis for Nuclear Waste Management XXI , 1997 , 813
Copyright
Copyright © Materials Research Society 1998

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References

REFERENCES

[1] Sato, T., Sugihara, K. and Matsui, H. (1995):Geoscientific Studies at the Tono Mine and the Kamaishi Mine in Japan, Proc. 8th, ISRM Congress on Rock Mechanics, Tokyo, pp. 47.Google Scholar
[2] Sugihara, K. et al. (1996): Study on excavation Disturbance in the Kamaishi Mine, Japan, EDZ Workshop, Int. Conference on Deep Geological Disposal of Radioactive Waste, pp. 15.Google Scholar
[3] Olsson, O. L. and Winberg, A. (1996):Current Understanding of Extent and Properties of the Excavation Disturbed Zone and Its Dependence of Excavation Method:EDZ Workshop, Int. Conference on Deep Geological Disposal of Radioactive Waste, Winnipeg, pp. 101.Google Scholar
[4] Read, R. S. (1996):Characterizing Excavation Damage in Hightly-Stressed Granite at AECL‘s Underground Research Laboratory (Canada). EDZ Workshop, Int. Conference on Deep Geological Disposal of Radioactive Waste, Winnipeg, pp. 35.Google Scholar
[5] Frieg, B. and Marschall, P. (1993):The Grimsel Test Site:Results from Phase-Ill and proposals for Phase- IV. Proceedings of Int. Symp. on In-situ Experiments, Kamaishi, Japan.Google Scholar
[6] Matsui, H., Sato, T. and Sugihara, K. (1997):Comparison of the results of stress measurements determined by various methods at the Kamaishi mine, Proc. of the Int. Symp. on Rock Stress, Kumamoto, pp.95.Google Scholar
[7] Holmberg, R. and , Perssson, P-A. (1980):Design of tunnel perimeter blasthole patterns to prevent rock damage, Trans. Inst. Min. Metall., London, Vol.89, pp. A37.Google Scholar
[8] Industrial Explosives Society (1976):Blasters‘ Handbook, in Japanese.Google Scholar
[9] Hagiwara, Takahiro (1938):JISIN, Journal of the Seismological Society of Japan., No.10 pp. 463, in Japanese.Google Scholar