Blar i Institutt for geovitenskap og petroleum på forfatter "Panthi, Krishna Kanta"
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Assessment on the in-situ rock stress condition along an unlined pressure tunnel/shaft of a Norwegian Hydropower Project using numerical modeling
Chaudhary, Bikash; Panthi, Krishna Kanta; Trinh, Nghia Quoc (Chapter, 2023)Confinement is a pre-requisite in the “Norwegian state-of-art design principles” for unlined pressure tunnels/shafts where the minimum principal stress must exceed internal water pressure. Reliable estimation of in-situ ... -
ASSESSMENT ON THE POTENTIAL USE OF SHOTCRETE LINED HIGH PRESSURE TUNNEL AT RASUWAGADHI HYDROELECTRIC PROJECT, NEPAL
K.C., Ramesh Kumar (Master thesis, 2016)In this thesis, Rasuwagahdi Hydroelectric Project located in central region of Nepal, has been taken as the case study. In this project, approximately 4.2 Km long headrace tunnel with 138m long vertical shaft has been ... -
Assessment on the swelling and disintegration potential of weak and weathered rocks in water tunnels of hydropower projects - a contribution based on use of laboratory testing methods
Selen, Lena (Doctoral theses at NTNU;2020:354, Doctoral thesis, 2020)Swelling of rocks is a time-dependent phenomenon and a result of multiple and interactive rock characteristics interplaying in a complex picture. Further, the swelling responses of the rock mass are conditioned on the ... -
Capacity Enhancement in Rock and Tunnel Engineering in Nepal
Panthi, Krishna Kanta (Journal article, 2022)In the recent past, infrastructure development activities have gained momentum in Nepal. Many roads are being and will be upgraded to enhance transport efficiency. The hydropower development activities are in full momentum. ... -
Challenges associated with the construction of vertical and inclined shafts in the Himalayan Region
Katuwal, Tek Bahadur; Panthi, Krishna Kanta; Basnet, Chhatra Bahadur (Chapter, 2023)In the Nepal Himalayas, hydropower projects having an installed capacity of over 10MW usually consist of underground waterways. Most of these underground waterways consist of vertical or inclined pressure shafts, which are ... -
Compositional Features and Swelling Potential of Two Weak Rock Types Affecting Their Slake Durability
Selen, Lena; Panthi, Krishna Kanta; Mørk, Mai Britt Engeness; Sørensen, Bjørn Eske (Journal article, 2021)Weak and weathered rocks are well known for their sensitivity to changes in moisture content. Degrading behavior is common in weak rocks with moisture-sensitive mineral components and present numerous stability problems. ... -
Cyclic fatigue in unlined hydro tunnels caused by pressure transients
Neupane, Bibek; Panthi, Krishna Kanta; Vereide, Kaspar (Peer reviewed; Journal article, 2021)Regulated hydropower is currently the most capable load balancing technology for the future renewable energy system which will be characterized by a large share of unregulated energy from solar and wind power. Increased ... -
Cyclic oedometer swelling tests on rocks from North-Central Luzon, Philippines
Selen, Lena; Vergara, Maximiliano R.; Panthi, Krishna Kanta (Chapter, 2020)Tunnels passing through swelling rocks are subjected to stability problems as moisture changes affect the material properties of the rocks. The drying out process during construction may cause local contraction stresses ... -
Design review of the headrace system for the Upper Tamakoshi project, Nepal
Panthi, Krishna Kanta; Basnet, Chhatra Bahadur (Journal article; Peer reviewed, 2017)One way to reduce the cost of construction of hydroelectric projects with underground waterway systems is to allow the rock mass to act as natural concrete and to adopt unlined/shotcrete-lined pressure tunnels to the extent ... -
Detailed engineering geological assessment of a shotcrete lined pressure tunnel in the Himalayan rock mass conditions: a case study from Nepal
Basnet, Chhatra Bahadur; Panthi, Krishna Kanta (Peer reviewed; Journal article, 2020)The complex topography, geology, and tectonicenvironment prevailingin the Himalaya are the mainchallengeswhile applying theunlinedorshotcretelinedpressuretunnelconcept for hydropowerprojects.Inaddition,rockmassesintheHim ... -
Development of a 3D structural model of a mine by consolidating different data sources
Morales, Mario Orlando Cardenas; Panthi, Krishna Kanta; Botsialas, Konstantinos; Holmøy, Kristin Hilde (Journal article; Peer reviewed, 2017)Joints and faults are inherent parts of the rock mass. In the vast majority of mining slopes, discontinuity structures play an important role in slope stability and may trigger a slope failure. The most important step in ... -
Development of in-situ rock stress map of south-western part of Norway
Ghimire, Sanyam; Panthi, Krishna Kanta (Chapter, 2024)Knowledge of in-situ rock stress is important for underground projects like mining, nuclear repository, hydropower and other utility tunnels and caverns for the assessment of stability condition. Specifically, it is very ... -
Earthquake and Monsoon Induced Slope Failure Effects on Hydropower Projects - An Analysis Along the Sunkoshi Valley, Nepal
Basnet, Nabin (Master thesis, 2016)Due to various reasons like fragile geology, steep topography, highly varying climate and rainfall, many slope failures of varying sizes are very common in Nepal. Every year a lot of those events occur which cause a huge ... -
Effect of pressure fluctuations in long-term stability of unlined pressure shaft at Svandalsflona Hydropower project, Norway
Neupane, Bibek; Panthi, Krishna Kanta (Chapter, 2019)The main design principle of unlined pressure tunnels/shafts in a hydropower scheme is to provide sufficient confinement (minor principal stress) to withstand the internal hydrostatic water pressure. Rock support is only ... -
Effectiveness of applied support in tunnels in plastically deformed rock mass - an analysis based on a tunnelling project from the Nepal Himalaya
Shrestha, Pawan Kumar; Panthi, Krishna Kanta (Chapter, 2014)Potentiality of plastic deformation in tunnels in the Himalayan rock mass is considerable. Tun-nel convergence and squeezing phenomena have therefore been serious issues for successful tunnelling in the region. Large tunnel ... -
Effectiveness of Post-injection Grouting in Controlling Leakage: A Case Study
Panthi, Krishna Kanta (Journal article; Peer reviewed, 2011) -
Engineering Geological and Stress Induced Instability Evaluation Along Middagselvfjell Railway Tunnel
Thorgilsdóttir, Thórhildur Vala (Master thesis, 2015)Ofotbanen is over 100 years old and was originally constructed for transporting ore from iron mine in Kiruna (northern Sweden) to Narvik harbour. The traffic today is composed of ore trains, freight trains and passenger ... -
Engineering geological assessment and structural comparison of the Vollan and Ivasnasen rock slopes at Sunndal, Norway
Dreiås, Gudrun Majala (Master thesis, 2012)This master thesis has interest in analyzing the two unstable rock slopes Ivasnasen and Vollan. These rock slopes are located in a U-shaped valley in Sunndal municipally (Møre & Romsdal, western Norway). The analyses are ... -
Engineering Geological Assessments of a Tunnel for the Proposed High Speed Railway Link Between Oslo and Bergen
Hagen, Anniken (Master thesis, 2012)Today, the larger cities in Norway are linked with railways, but the rail transport system is in need of an upgrade in order to compete with other means of transport. Long journey times associated with the Norwegian railway ... -
Engineering geological design of underground works for Upper Madi Hydroelectric Project
Krishna, K.C., Prem; Panthi, Krishna Kanta (Journal article; Peer reviewed, 2011)