Browse > Article

Characteristics of Excessive Horizontal Stress in ]Korea by Hydraulic Fracturing Stress Measurement  

Bae Seong-Ho (Geogeny Consultants Group Inc)
Jeon Seok-Won (School of Civil, Urban & Geosystem Engrg., Seoul National Univ)
Kim Hag-Soo (Geogeny Consultants Group Inc)
Kim Jae-Min (Geogeny Consultants Group Inc)
Publication Information
Journal of the Korean Geotechnical Society / v.21, no.5, 2005 , pp. 103-110 More about this Journal
Abstract
In this paper, the characteristics of excessive horizontal stress components in Korea were studied using more than five hundred measured data set of in-situ hydraulic fracturing test. Based on the in-situ testing data, the magnitude and orientation of the horizontal stress component and variation of stress ratio (K) with depth were investigated. And also horizontal stress magnitude versus depth relationships and distribution limits of stress ratio components were suggested. For the depth less than 310 m in the entire territory, the stress ratio has a tendency to diminish and stabilize with depth, but fur some areas, it was revealed that the excessive horizontal stress fields with stress ratio close to 3.0 below 200 m in depth have formed. The results from the investigation of excessive horizontal stress regions showed that there existed several regions where the localized excessive horizontal stress was big enough to potentially induce brittle failure around the openings at less than 300 m in depth.
Keywords
Brittle failure; Excessive horizontal stress; Hydraulic fracturing test; Stress ratio (K);
Citations & Related Records
연도 인용수 순위
  • Reference
1 Hoek, E. and Brown, E.T. (1980), Underground Excavation in Rock, The Institute of Mining & Metallurgy, London, pp.183-220
2 Diederichs, M.S. (1999), Instability of hard rockmass : The Role of Tensile Damage and Relaxation, Doctorial Thesis, University of Waterloo, Canada, pp.1-13
3 Hoek, E, Kaiser, P.K., Bawden, W.F. (1995), Support of Underground Excavation in Hard Rock, A.A. Balkema, Rotterdam, pp.99-105
4 배성호 (2005), 수압파쇄법에 의해 측정된 국내 초기응력의 자체 구조구별 분포 특성에 관한 연구, 공학박사학위논문, 서울대학교 대학원, pp.120-128
5 Martin, C.D., Kaiser, P. K., and McCreath, D. R. (1999), 'HoekBrown Parameters for Predicting the Depth of Brittle Failure Around Tunnels', Can. Geotech. J., pp.136-151
6 Kaiser, P.K., Diederichs, M.S., Martin, C.D. and Steiner, W. (2000), 'Underground Works in Hard Rock Tunnelling and Mining', Proc. of GeoEng2000, pp.841-926
7 Lee, M.Y., Haimson, B.C. (1989), 'Statistical evaluation of hydraulic fracturing stress measurement parameters', Int. J. Rock Mech. Min. Sci. & Geomech., Vol.26, No.6, pp.447-456   DOI   ScienceOn