Tunnel and Underground Space (터널과지하공간)

Korean Society for Rock Mechanics and Rock Engineering (한국암반공학회)
권호 표지

Characteristics of in situ stress regime measured by hydraulic fracturing technique and its application on tunnel design

현지암반 초기지압의 분포특성 및 암반터널설계에의 적용

  • 최성웅 (한국자원연구소 자원개발연구부)
  • Published : 1997.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

A rock mass is usually classified by the results of geological survey and laboratory tests on rock specimens in order to obtain the adequate properties for the numerical analysis. For these purposes a rock mass strength is estimated based on the empirical criterion proposed by Hoek and Brown and a modulus of deformation is taken with the empirical relations developed by Bieniawski, Serafim and Pereira. In addition, the $K_o$ value which is the ratio of the horizontal stress to the vertical stress is one of the most important input data in the numerical analysis. Its role on a tunnel stability analysis could be verified with the numerical results taken by a finite difference code or a distinct element code. However, a deduced value used to be applied for the $K_o$ value in most of tunnel designs, even though the patterns of stress tensor are variable with regions and depths. Thus in situ stresses were measured by a hydraulic fracturing technique on several tunnel sites and applied directly to the tunnel design for the enhancement of its precision. With those informations on in situ stresses, the safe design should be obtained economically on the road or subway tunnels.

Keywords

References

  1. Annual Book of ASTM Standards, 4.08 Standard test method for determination of the in-situ stress in rock using the hydraulic fracturing method ASTM Desination D4645-87
  2. Int. J. Rock Mech. Min. Sci. & Geomech. Abstr. v.15 Determining rock mass deformability : Experience from case histories Bieniawski, Z. T.
  3. Proc. the Korea-Japan Joint Symp. on Rock Engineering In-situ stress measurement by hydraulic fracturing for highway tunnel Choi, S. O.;K. C. Han;C. Park;H. S. Shin
  4. Introduction to rock mechanics(2nd ed.) Goodman, R. E.
  5. Proc. 4th ISRM Congress Field measurements and laboratory tests for the design of energy storage caverns Haimson, B. C.
  6. Trans. Am. Geophys. U. v.69 Current hydraulic fracturing interpretation, How correctly does it estimate the maximum horizontal crustal stress? Haimson, B. C.
  7. Proc. of 15th Canadian Rock Mechanics Symp. The Hoek-Brown Failure Criterion-a 1988 Update, Rock Engineering for Underground Excavation Hoek, E.;E. T. Brown
  8. Int. J. Rock Mech. Min. Sci. & Geomech. Abstr. v.24 Suggested methods for rock stress determination ISRM
  9. Fundamentals of rock mechanics(2nd Ed.) Jaeger, J. C.;N. G. W. Cook
  10. Trans. Am. Geophys. U. v.66 Stress measurement in the Red River Fault Region of Yunnan province, China Li, F.;Q. Zhai;M. D. Zoback;B. C. Haimson;M. Y. Lee
  11. Proc. Hydaulic Fracturing Stress Measurements, Monterey Hydraulic fracturing stress measurements along the eastern boundary of the SW-German Block Rummel, F.;Baumg rtner, J.;Alheid, H.J.
  12. Proc. the Korea-Japan Joint Symp. on Rock Engineering Development of intergrated hydrofracturing data processing program by statistical approach Ryu, D. W.;H. K. Lee;S. O. Choi
  13. Proc. of Int. Symp. on Engineering Geology and Underground Construction v.1 Considerations of the geomechanical classification of Bieniawski Serafim, J.L.;J.P. Pereira
  14. J. Geophys. Res. v.87 In situ study of the physical mechanisms controlling induced seismicity at Monticello Reservoir, South California Zoback, M. D.;S. H. Hickman
  15. 한국자원연구소 보고서 곤지암 지하암반 저장시설 신축 제시험 및 안정성 해석
  16. 한국자원연구소 보고서;과학기술처 연차보고서 지하에너지 저장시설 구축 및 유지기술연구