Monitoring of Cut-Slope Behavior with Consideration of Rock Structure and Failure Mode

개착사면의 구조적 특성과 파괴양상을 고려한 계측 해석

  • Published : 2006.12.31

Abstract

Analysis of slope behavior concerning the structural characteristics of field rock mass can be processed by virtue of borehole information of joint orientation and position acquired from DOM drilled core. Anticipated sliding potential of pre-failed rock slope is analyzed and the regional slope instability is investigated by inspecting the hazardous joints and blocks the traces of which is projected on the cut-face. Cross section has been set at the center of rock slope and the traces of both joints and tetrahedral blocks, which potentially can induce the slope failure, are drawn to investigate the failure modes and the triggering mechanism. Automated monitoring system has been established to measure the slope movement and especially, inclinometer has been installed inside DOM borehole to analyze the slope movement by considering the internal rock structure. Algorithms for predicting the slope failure time have been reviewed and the significance of heavy rainfall on the slope behavior has been investigated.

References

  1. 이호문, 2005, 절개사면에 설치된 활동억지 시스템의 거동에 관한 연구. 중앙대학교 석사학위 논문
  2. 조태진, 유병옥, 원경식, 2003, Discontinuity Orientation Measurement(DOM) 시추장비 및 코어절리 해석모델 개발. J. of Korean Society for Rock Mech. Vol. 13, No. I, p33-43
  3. 조태진, 이창섭, 정진호, 2005, 개착면 내부에서의 절리분포 예측을 통한 사면 해석, J. of Korean Society for Rock Mech Vol. 14, p391-398
  4. Cho, T.F., K. Won, B. You and S. Lee., 2004, Application of a discontinuity orientation measurement drilling system to the characterization of an in situ rock mass and the prediction of cut-slope stability. International Journal of Rock Mechanics and Mining Sciences. 41(3)
  5. Fisher, R., 1953, Dispersion on a sphere. Proceedings of the Royal Society of London, A2l7, p295-305
  6. Crosta, G.B. and F. Agliardi, 2002, How to obtain alert velocity thresholds for large rockslides, Physics and Chemistry of the Earth, Vol. 27, p1557-1565 https://doi.org/10.1016/S1474-7065(02)00177-8
  7. Fukuzono, T., 1990, Recent Studies on Time Prediction of Slope Failure. Landslide News, No.4, p9-12
  8. Lollino, G., M. Arattano and M. Cuccureddu, 2002, The use of the automatic inclinometric system for landslide early warning: the case of Cabella Ligure(NorthWestern Italy). Physics and Chemistry of the Earth, Vol. 27, p1545 -1550 https://doi.org/10.1016/S1474-7065(02)00175-4
  9. Mahtab, M.A. and T.M. Yegulalp, 1982, A rejection criterion for definition of clusters in orientation data. In R. E. Goodman and F. E. Heuze (eds),. In Issues in Rock Mechanics Proceedings of the 22nd Symposium on Rock Mechanics, Berkeley. American Institute of Mining Metallurgy and Petroleum. Engineers, New York: p116-23
  10. McMahon, B.K., 1968, Indices related to the mechanical properties of jointed rock. Proceedings of the Ninth Symposium on Rock Mechanics - Status of Practical Rock Mechanics, Colorado, p117-133
  11. Petley, D.N. and D.J. Petley, 2004, On the intiation of large rock-slides: perspectives from a new analysis of the Vaiont movement record, in : Large Rock slope failures. edited by Paper Evans, S., Balkema, Rotterdam
  12. Read, S., L. Richards, and G. Cook 2003, Rock mass defect patterns and the Hoek-Brown failure criterion., Proc. 10th Cong. ISRM, South Africa
  13. Voight, B., 1988, A method for prediction of volcanic eruption. Nature, Vol. 332, No. 6140, p125 -130 https://doi.org/10.1038/332125a0
  14. Woodcock, N. H., 1977, Specification of fabric shapes using an eigenvalue method. Bulletin of the Geological Society of America, Vol.88, p1231-1236 https://doi.org/10.1130/0016-7606(1977)88<1231:SOFSUA>2.0.CO;2
  15. Yoon, K.S., T.F. Cho, B.O. You, B.O. and K.S. Won, 2003, A new approach for borehole joint investigation Development of Discontinuity Orientation Measurement drilling system. Proc. 10th Congress of the ISRM: p 1355-1358