Abstract
The arching effect is the most universal phenomenon which exist in an underground engineering due to excavation, encountered by Terzaghi in 1943. The arch theory was widely used in the underground tunnel. A numerical investigations were performed using 3D finite element method (MIDAS GTS NX) to study the formation of arches above the tunnel roof in rock mass. In this case study, a 5-km-long-circular twin tunnel between Range hill and Swargate is being excavated by tunnel boring machine (TBM) to improve traffic system of Pune city, Maharashtra, India is consider. Rock types encountered during tunnelling are amygdaloidal basalt, vesicular basalt and compact basalt. In this study, numerical analysis is performed for prediction of arching action. Arch action is studied with the help of transfer of stresses around tunnel. Various model tests are carried out to analyse the differences of the arch action above tunnel face between dry rock mass and saturated rock mass with varying overburden depth (2D, 2.5D, 3D, 3.5D, 4D, 4.5D, 5D) “D” is diameter of the tunnel. 14 numerical models are studied in which 7 are for dry rock mass and 7 for saturated rock mass. Analysis shows that forming process of arch. Furthermore, factors affecting formation of pressure arch, i.e. overburden depth and water table effect on arch formation, are defined. Overburden depth factor has less influence on the arching action. Test results show that the arching coefficient can be decreased 10–15% by groundwater. The results obtained from this study will increase the ability to deal with similar ground conditions during tunnelling using TBM.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Terzaghi K (1946) In: Proctor RV, White T (eds) Rock defects and load on tunnel supports rock tunneling with steel supports. Commercial Shearing and stamping Co, Youngstown, Ohio, pp 15–99
Lee CJ, Wu BR, Chen HT, Chiang KH (2006) Tunnel stability and arching effects during tunneling in soft clayey soil. Tunn Undergr Space Technol 21:119–132
Chen CN, Huang WY, Tseng CT (2011) Stress redistribution and ground arch development during tunnelling. Tunn Undergr Space Technol 26(1):228–235
Song J, Gao Y, Liu S (2018) Analysis of the effect of groundwater on soil arch in shield tunneling. Arab J Geosci 11:534. https://doi.org/10.1007/s12517-018-3829-3
Anagnostou G, Kovari K (1996) Face stability conditions with earth-pressure-balanced shields’s. Tunn Undergr Space Technol 11(2):165–173
Mohammed (2017) Numerical modelling for circle tunnel under static and dynamic loads for different depth. Res J Min 1(1):1–11
Zhang ZX, Xu Y, Kulatilake PHSW, Huang X (2012) Physical model test and numerical analysis on the behaviour of stratified rock masses during underground excavation. Int J Rock Mech Min Sci 49:134–147. https://doi.org/10.1016/j.ijrmms.2011.11.001
Jia P, Tang CA, Wang SH (2006) Destroy mechanism of tunnel with stratified roof. J Chin Coal Soc 31(1):11–15
He L, An XM, Zhao ZY, Zhao J (2015) Development of a unified rock bolt model in discontinuous deformation analysis. Int J Rock Mech Min Sci (in preparation)
Wang SR, Li N, Li CL, Cao C (2015) Distribution characteristics analysis of pressure-arch in horizontal stratified rocks under coal mining conditions. Int J Rock Mech Min Sci ISSN 1330-365
Wang SR, Li N, Li CL, Hagan P (2014) Mechanics evolution characteristics analysis of pressure-arch in fully mechanized mining field. J Eng Sci Technol Rev 7(4):40–45
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2023 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Khule, T.K., Dalvi, R.S. (2023). Study of Arch Formation in Basalt Rock—A Case Study. In: Agnihotri, A.K., Reddy, K.R., Chore, H.S. (eds) Proceedings of Indian Geotechnical and Geoenvironmental Engineering Conference (IGGEC) 2021, Vol. 1. IGGEC 2021. Lecture Notes in Civil Engineering, vol 280. Springer, Singapore. https://doi.org/10.1007/978-981-19-4739-1_11
Download citation
DOI: https://doi.org/10.1007/978-981-19-4739-1_11
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-19-4738-4
Online ISBN: 978-981-19-4739-1
eBook Packages: EngineeringEngineering (R0)