Abstract
Nepal is a sensitive earthquake zone. On April 25, 2015, there was an Earthquake of 7.8 Mw. After that, more than 30 aftershocks of above 5 Mw occurred. One of the aftershocks was of 7.3 Mw which occurred on May 12. In this paper, the damages in the tunnel of the Melamchi water supply project due to this earthquake were assessed. Cracks were observed on the inside surface, wall, and crown of the tunnel. Distribution and characteristics of these seismic damages were investigated and summarised to assess potential influencing factors. The damages are categorized into the following patterns: lining cracks and spalling. Lining cracks are further divided into longitudinal cracks, transverse cracks, ring cracks, and inclined cracks. Influencing factors are discussed with respect to Earthquake parameters mainly being magnitude, depth and distance to epicenter. This paper presents the pattern of seismic damages occurred for different overburden depths and different rock types. Here, the analysis is done by observation and categorization of damages for different aspects of considered factors and there are some unusual results in damages for varying overburden depths. There were few unusual results as in the damage distribution for overburden depth and also for different rock types. The reason may be the occurrence of many considerable aftershocks and epicenter being very near, so the damages may have been accumulated after each shock. Also the distribution of rock types have influenced the damages. So one influencing factors may have its effects on the results while considering the other factor.
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References
Asakura T, Sato Y (1998) Mountain tunnels damage in the 1995 Hyogoken-Nanbu earthquake. Q Rep Rtri 39:9–16
Aydan O, and Ulusay R (2015) A quick report on the 2015 Gorkha (Nepal) earthquake and its geo-engineering aspects. Iaeg, 26 pp
Barton N, Lien R, Lunde J (1974) Engineering classification of rock masses for the design of tunnel support. Rock Mech 6:189–236
Bhattarai -Executive G, Lees D, Niaz A (2015) The melamchi water supply project
Chen Z, Shi C, Li T, Yuan Y (2012) Damage characteristics and influence factors of mountain tunnels under strong earthquakes. Nat Hazards 61:387–401
Dhital MR (2015) Geology of the Nepal Himalaya Regional perspective of the classic collided Orogen. Springer, Berlin
Dowding CH, Rozan A (1978) Damage to rock tunnels from earthquake shaking. J Geotech Eng Div 104:175–191
Edco (2001) East Drilling Company Ltd. .Melamchi Diversion Scheme, Geotechnical Investigation Report
Goda K, Kiyota T, Pokhrel RM, Chiaro G, Katagiri T, Sharma K, Wilkinson S (2015) The 2015 Gorkha Nepal earthquake: insights from earthquake damage survey. Front Built Environ 1:8
Hashash YM, Hook JJ, Schmidt B, John I, Yao C (2001) Seismic design and analysis of underground structures. Tunnel Underg Sp Technol 16:247–293
Huang T, Ho T, Chang C, Yao X, Chang Q, Lee H (1999) Quick investigation and assessment on tunnel structures after earthquake report for the public construction commission, Taipei, Taiwan And The Relevant Reinforced Methods
Okamoto S, Tamura C (1972) Behaviour of subaqueous tunnels during earthquakes. Earthq Eng Struct Dyn 1:253–266
Rajyaswori S, Li X, Luo Y, Kumar MA, Xu K (2020) The effect of overburden depth on the damage of underground structure during earthquake. E&Es 455:012067
Sharma S, Judd WR (1991) Underground opening damage from earthquakes. Eng Geol 30:263–276
Shen Y, Gao B, Yang X, Tao S (2014) Seismic damage mechanism and dynamic deformation characteristic analysis of mountain tunnel after wenchuan earthquake. Eng Geol 180:85–98
Towhata I (2008) Geotechnical earthquake engineering. Springer Science & Business Media, Berlin
Usgs Center For Engineering Motion Data (2015) Cesmd-A Cooperative Effort
Wang Z, Zhang Z (2013) Seismic damage classification and risk assessment of mountain tunnels with a validation for the 2008 Wenchuan earthquake. Soil Dyn Earthq Eng 45:45–55
Wang W, Wang T, Su J, Lin C, Seng C, Huang T (2001) Assessment of damage in mountain tunnels due to the Taiwan Chi-Chi earthquake. Tunnel Underg Sp Technol 16:133–150
Wang Z, Gao B, Jiang Y, Yuan S (2009) Investigation and assessment on mountain tunnels and geotechnical damage after the Wenchuan earthquake. Sci China Ser E Technol Sci 52:546–558
Yashiro K, Kojima Y, Shimizu M (2007) Historical earthquake damage to tunnels in Japan and case studies of railway tunnels in the 2004 Niigataken-Chuetsu earthquake. Q Rep Rtri 48:136–141
Zhang X, Jiang Y, Sugimoto S (2018) Seismic damage assessment of mountain tunnel: a case study on the Tawarayama tunnel due to the 2016 Kumamoto earthquake. Tunnel Undergr Sp Technol 71:138–148
Acknowledgements
The authors would like to acknowledge the Melamchi Water supply Project for providing related datas. The authors also thank deputy executive director Ramakanta Duwadi, Project director Surya lal Kadel, deputy team leader Pradyumna lal Pradhan and geologist Sahana joshi for their cooperation and contribution towards this research.
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Shrestha, R., Li, X., Yi, L. et al. Seismic Damage and Possible Influencing Factors of the Damages in the Melamchi Tunnel in Nepal Due to Gorkha Earthquake 2015. Geotech Geol Eng 38, 5295–5308 (2020). https://doi.org/10.1007/s10706-020-01364-9
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DOI: https://doi.org/10.1007/s10706-020-01364-9