Experiences and lessons from the use of TBM in the Himalaya – A review |
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| Affiliation: | 1. Geotechnical and Structural Engineering Research Center, Shandong University, Jinan 250061, China;2. School of Qilu Transportation, Shandong University, Jinan 250061, China;3. School of Highway, Chang’an University, Xi’an 710064, China;1. CNNC Beijing Research Institute of Uranium Geology, Beijing 100029, China;2. Ecole Polytechnique Federalede Lausanne (EPFL), Lausanne CH-1015, Switzerland;3. Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing 100124, China;1. School of Geology, College of Science, University of Tehran, Tehran, Iran;2. School of Mining and Geosciences, Nazarbayev University, Nur-Sultan city, 010000, Kazakhstan;3. Earth Mechanics Institute, Colorado School of Mines, Colorado, USA;1. Department of Mining and Metallurgical Engineering, Amirkabir University of Technology, Tehran, Iran;2. Department of Geological Engineering, Engineering Faculty, Pamukkale University, Denizli 20020, Turkey;3. Industrial Engineering Department, Amirkabir University of Technology, Tehran, Iran |
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| Abstract: | Tunnel boring machine (TBM), with its many advanced features, is being regularly planned now for the excavation of long tunnels in the difficult geology of the Himalayan region. The experience, so far, with the TBMs in three tunnels of Himalayas in India has not been encouraging. However, efforts are being made to overcome the problems and make the TBM a successful venture in the difficult grounds of Himalaya in India. The recent successful completion of 14.75 km long TBM portion of head race tunnel in Kishanganga hydroelectric project in J&K state has shown that the TBM can be used in the Himalayan tunnels as well.In the paper the experiences of TBM in four Himalayan tunnels are briefly highlighted. In case of Tapovan-Vishnugad head race tunnel, the variation of ground in terms of difficulty in managing the TBM thrust and penetration rate has also been highlighted. At the end, some issues have been presented which seems to be important for the success of TBM in the difficult grounds. |
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| Keywords: | TBM Himalayan tunnelling Varying geology Geological investigations Probe drilling Risk sharing |
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