Practical use of initial displacement monitoring for predicting support behavior with asymmetric deformation in deep tunnel

Abstract

Displacement monitoring provides essential information for safe and rational tunnel excavation. The data obtained allow engineers to analyze and predict tunnel behavior, facilitating the selection of appropriate supports and the evaluation of their effectiveness. In a recent tunnelling project in the Akaishi Mountains of central Japan, displacement monitoring was intensively implemented to ensure the stability of the 4.2-km-long Hirogawara adit, excavated to a maximum depth of 832 m. Analysis revealed a strong correlation between initial and final displacements. However, the tunnel experienced occasional support deformations. To address this, the trend of 3D absolute displacements was analyzed to predict and evaluate asymmetric deformation. The effective use of 1-cycle displacement monitoring proved critical for predicting final displacements and optimizing rock supports, particularly in cases with high overburden and limited geotechnical information.

Keywords

Displacement prediction / Initial and final displacement / Support application / Asymmetric deformation

Data availability

The data that support the findings of this study are available from the corresponding author upon reasonable request.

CRediT authorship contribution statement

Takeshi Sato: Writing - original draft, Methodology, Investigation, Data curation, Conceptualization. Fumiharu Nakahara: Investigation, Data curation. Kazuo Sakai: Writing - original draft, Investigation, Formal analysis, Data curation. Weiren Lin: Writing - review & editing, Methodology, Investigation. Kiyoshi Kishida: Writing - review & editing, Methodology.

Declaration of competing interest

Dr. Kiyoshi Kishida is an editorial board member for Underground Space and was not involved in the editorial review or the decision to publish this article. All authors declare that there are no competing interests.

Acknowledgement

This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

References

[1] Button, E. A. (2004). Characterization of Phyllites for Tunnelling. International. Journal of Rock Mechanics and Mining Sciences, 4 (Supplement 1), 215-220.

[2] Button, E.A., Leitner, R., Poetsch, M., & Schubert, W. (2006). Spatial relationships between discontinuity orientation and rock mass behaviour in underground excavations. In ARMA US Rock Mechanics/Geomechanics Symposium (pp. ARMA-06). ARMA.

[3] Carranza-Torres, C., & Fairhurst, C. (2000). Application of the conver-gence-confinement method of tunnel design to rock masses that satisfy the Hoek-Brown failure criterion. Tunnelling and Underground Space Technology, 15(2), 187-213.

[4] Funato, A., & Ito, T. (2017). A new method of diametrical core deformation analysis for in-situ stress measurements. International Journal of Rock Mechanics and Mining Sciences, 91, 112-118.

[5] Grossauer, K., Schubert, W., & Sellner, P. (2005). The importance of displacement prediction. In ITA-AITES World Tunnel Congress, Underground Space Use-Analysis of the Past Lessons for the Future, London (pp.1239-1244).

[6] Hoek, E. (2018). Support for very weak rock associated with faults and shear zones. In Rock support and reinforcement practice in mining (pp.19-32). Routledge.

[7] Ito, T., Funato, A., Lin, W., Doan, M. L., Boutt, D. F., Kano, Y., Ito, H., Saffer, D., McNeill, L. C., Byrne, T., & Moe, K. T. (2013). Determination of stress state in deep subsea formation by combination of hydraulic fracturing in situ test and core analysis: A case study in the IODP Expedition 319. Journal of Geophysical Research: Solid Earth, 118(3), 1203-1215.

[8] Kluckner, A., & Schubert, W. (2019). Study on the anisotropic displacement pattern at a conventional tunnel drive. In ISRM Young Scholars Symposium on Rock Mechanics (pp. ISRM-YSRM). ISRM.

[9] Lisjak, A., Garitte, B., Grasselli, G., Müller, H. R., & Vietor, T. (2015). The excavation of a circular tunnel in a bedded argillaceous rock (Opalinus Clay): short-term rock mass response and FDEM numerical analysis. Tunnelling and Underground Space Technology, 45, 227-248.

[10] Merlini, D., Stocker, D., Falanesca, M., & Schuerch, R. (2018). The Ceneri Base Tunnel: construction experience with the southern portion of the flat railway line crossing the swiss alps. Engineering, 4(2), 235-248.

[11] Mezger, F., Anagnostou, G., & Ziegler, H. J. (2013). The excavationinduced convergences in the Sedrun section of the Gotthard Base Tunnel. Tunnelling and Underground Space Technology, 38, 447-463.

[12] Mezger, F., & Anagnostou, G. (2015). On the non-uniformity of squeezing deformations in the Ceneri Base Tunnel. In ISRM EUROCK (pp. ISRM-EUROCK). ISRM.

[13] Mochizuki, T., Saito, Y., Ishiyama, K., & Kameoka, Y. (1990). Investigations with respect to rock burst occurred in excavation of Karisaka Tunnel. Proceedings of the 8th Japan Symposium on Rock Mechanics (in Japanese).

[14] Naji, A. M., Rehman, H., Emad, M. Z., & Yoo, H. (2018). Impact of shear zone on rockburst in the deep neelum-jehlum hydropower tunnel: A numerical modeling approach. Energies, 11(8), 1935.

[15] Panet, M., & Guenot, A. (1982). Analysis of convergence behind the face of a tunnel. Tunnelling (82) (pp. 197-204). Brighton: IMM.

[16] Sato, T., Nakahara, F., Aoki, T., & Kishida, K. (2021). Importance of initial displacement monitoring and its application to high overburden tunneling. Journal of Japan Society of Civil Engineers, Ser. F1 (Tunnel Engineering), 77(1), 17-31 (in Japanese).

[17] Schubert, W., Steindorfer, A., & Button, E. A. (2002). Displacement monitoring in tunnels-an overview. Felsbau, 20(2), 7-15.

[18] Schubert, W., & Grossauer, K. (2004). Evaluation and interpretation of displacements in tunnels. In Proceedings 14th international conference on engineering surveying.

[19] Schubert, W., Grossauer, K., & Sellner, P. (2005). Advances in the observational approach in tunnelling by new techniques of monitoring data evaluation. Moscow: Moscow State University of Civil Engineering.

[20] Sato, T., Nakahara, F., Aoki, T., Lin, W., & Kishida, K. (2022). Identifying anisotropic in-situ stress condition and its impact on displacement profiles for tunneling with high overburden. Journal of Japan Society of Civil Engineers, Ser. F1 (Tunnel Engineering), 78(1), 55-73 (in Japanese).

[21] Schubert, W., & Davila Mendez, J. M. (2017, June). Influence of foliation orientation on tunnel behavior. In ISRM EUROCK (pp. ISRMEUROCK). ISRM.

[22] Sellner, P. J., & Schubert, W. (2000). November). Prediction of displacements in tunnelling. In ISRM International Symposium..

[23] Sellner, P. J., Grossauer, K., & Schubert, W. (2002, November). Advanced analysis and prediction of displacements and system behaviour in tunnelling. In ISRM EUROCK (pp. ISRM-EUROCK). ISRM.

[24] Tsuchiya, T., Atsu, Y., & Takahashi, N. (2004). Analytical study to determine optimum intervals between successive constructions in the multiplied tunnel support system. Journal of Japan Society of Civil Engineers, 764, 121-131 (in Japanese).

[25] Sulem, J., Panet, M., & Guenot, A. (1987). Closure analysis in deep tunnels. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 24(3), 145-154. Pergamon.

[26] Terakawa, T., & Matsu'ura, M. (2010). The 3-D tectonic stress fields in and around Japan inverted from centroid moment tensor data of seismic events. Tectonics, 29(6), TC6008.

[27] Terzaghi, K., & Peck, R. B. (1967). Soil Mechanics in Engineering Practice (2nd edition). New York: John Willey and Sons (Chapter 7).

[28] Tynes, W.O. & McCleese, W.F. (1974). Investigation of shotcrete (Technical Report, Vol. 74, No. 5. p. 23). U.S. Army Engineer Waterways Experiment Station.

[29] Vitali, O. P. M., Celestino, T. B., & Bobet, A. (2019). Shallow tunnels misaligned with geostatic principal stress directions: analytical solution and 3D face effects. Tunnelling and Underground Space Technology, 89, 268-283.

[30] Vitali, O. P. M., Celestino, T. B., & Bobet, A. (2020). Tunnel misalignment with geostatic principal stress directions in anisotropic rock masses. Soils and Rocks, 43(1), 123-138.

[31] Vitali, O. P. M., Celestino, T. B., & Bobet, A. (2021). New modeling approach for tunnels under complex ground and loading conditions. Soils and Rocks, 44, e2021052120.