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A platform for research: civil engineering, architecture and urbanism
Tunnelling Challenges in Himalayas
https://orcid.org/http://orcid.org/0000-0002-1921-2973
Tunnelling activities are increasing nowadays in developing countries like India. The tunnels are mainly being constructed for hydropower projects, roadways and railways in hilly areas. Most of the tunnel constructions are housed in the Himalayan region. Due to tectonic activities, the rock masses of the Himalayan region are highly stressed. The high in situ stresses pose severe tunnelling problems in the Himalayan region. For example, the squeezing problem encounters in case of weak rock mass and rock burst problem occurs in strong rock mass under the influence of high in situ stresses. Tunnels of hydro projects like Maneri Stage I and II, Giri Bata, Chibro-Khodri, Tala, Kaligandaki-AKhimti-1 experienced squeezing ground behaviour, whereas Udhampur rail tunnel (T1) and Chenani-Nashri tunnel (now Dr. Shyama Prasad Mukherjee tunnel) experienced squeezing condition in some stretches. On the other hand, the tunnels of Nathpa Jhakri, Dul Hasti, Parbati and Tapovan Vishnugad hydro projects experienced rock bursts. The high in situ stresses result in tunnel stability problems of various degrees depending upon phenomenal severity. In addition to the aforementioned tunnelling problems, other issues like high seismicity, shear zones, and high water inrush are influenced also indirectly by the high in situ stresses. The present study highlights the critical findings and solutions to the tunnelling problems associated with mountain-building activities.
Tunnelling Challenges in Himalayas
https://orcid.org/http://orcid.org/0000-0002-1921-2973
Tunnelling activities are increasing nowadays in developing countries like India. The tunnels are mainly being constructed for hydropower projects, roadways and railways in hilly areas. Most of the tunnel constructions are housed in the Himalayan region. Due to tectonic activities, the rock masses of the Himalayan region are highly stressed. The high in situ stresses pose severe tunnelling problems in the Himalayan region. For example, the squeezing problem encounters in case of weak rock mass and rock burst problem occurs in strong rock mass under the influence of high in situ stresses. Tunnels of hydro projects like Maneri Stage I and II, Giri Bata, Chibro-Khodri, Tala, Kaligandaki-AKhimti-1 experienced squeezing ground behaviour, whereas Udhampur rail tunnel (T1) and Chenani-Nashri tunnel (now Dr. Shyama Prasad Mukherjee tunnel) experienced squeezing condition in some stretches. On the other hand, the tunnels of Nathpa Jhakri, Dul Hasti, Parbati and Tapovan Vishnugad hydro projects experienced rock bursts. The high in situ stresses result in tunnel stability problems of various degrees depending upon phenomenal severity. In addition to the aforementioned tunnelling problems, other issues like high seismicity, shear zones, and high water inrush are influenced also indirectly by the high in situ stresses. The present study highlights the critical findings and solutions to the tunnelling problems associated with mountain-building activities.
Tunnelling Challenges in Himalayas
https://orcid.org/http://orcid.org/0000-0002-1921-2973
Tunnelling activities are increasing nowadays in developing countries like India. The tunnels are mainly being constructed for hydropower projects, roadways and railways in hilly areas. Most of the tunnel constructions are housed in the Himalayan region. Due to tectonic activities, the rock masses of the Himalayan region are highly stressed. The high in situ stresses pose severe tunnelling problems in the Himalayan region. For example, the squeezing problem encounters in case of weak rock mass and rock burst problem occurs in strong rock mass under the influence of high in situ stresses. Tunnels of hydro projects like Maneri Stage I and II, Giri Bata, Chibro-Khodri, Tala, Kaligandaki-AKhimti-1 experienced squeezing ground behaviour, whereas Udhampur rail tunnel (T1) and Chenani-Nashri tunnel (now Dr. Shyama Prasad Mukherjee tunnel) experienced squeezing condition in some stretches. On the other hand, the tunnels of Nathpa Jhakri, Dul Hasti, Parbati and Tapovan Vishnugad hydro projects experienced rock bursts. The high in situ stresses result in tunnel stability problems of various degrees depending upon phenomenal severity. In addition to the aforementioned tunnelling problems, other issues like high seismicity, shear zones, and high water inrush are influenced also indirectly by the high in situ stresses. The present study highlights the critical findings and solutions to the tunnelling problems associated with mountain-building activities.
Tunnelling Challenges in Himalayas
Indian Geotech J
Mishra, A. K. (author)
Indian Geotechnical Journal ; 54 ; 1821-1833
2024-10-01
13 pages
Article (Journal)
Electronic Resource
English
Tunnelling Challenges in Himalayas
| Springer Verlag | 2024
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