Blar i Institutt for geovitenskap og petroleum på forfatter "Panthi, Krishna Kanta"
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Fluid Flow and Leakage Assessment Through an Unlined/Shotcrete Lined Pressure Tunnel: A Case from Nepal Himalaya
Panthi, Krishna Kanta; Basnet, Chhatra Bahadur (Peer reviewed; Journal article, 2021)The use of unlined/shotcrete lined pressure tunnels and shafts are cost-efective solutions for a hydropower project and are being implemented worldwide. To implement this concept, the ground conditions at the area of concern ... -
Groundwater Effect on Faulted Rock Mass: An Evaluation of Modi Khola Pressure Tunnel in the Nepal Himalaya
Shrestha, Pawan Kumar; Panthi, Krishna Kanta (Journal article; Peer reviewed, 2014)Groundwater has a negative impact not only in construction activity, but also in stability of a tunnel. Severity increases particularly in tunnels passing through fault gouge and breccia, where rock material is completely ... -
Himalayan rock mass and possibility of limiting concrete lined pressure tunnel length in hydropower projects in the Himalaya
Panthi, Krishna Kanta (Journal article; Peer reviewed, 2015)In recent past, the development activity in hydropower sector got momentum in the Himalayan region. However, the investment cost is considered considerably higher than in other part of the world, and there is a strong need ... -
Hydraulic Transient Impact on Surrounding Rock Mass of Unlined Pressure Tunnels
Ghimire, Sanyam; Panthi, Krishna Kanta; Vereide, Kaspar Vatland (Peer reviewed; Journal article, 2023)The frequent pressure pulsations due to hydraulic transients in hydropower plants induce cyclic loading on the rock mass that may contribute to increased instances of block falls and increased risk of tunnel collapse over ... -
Hydrogeological Analysis of the Tellnes Mine, Norway
Rostad, Ragnhild (Master thesis, 2017)The main purpose of this MSc thesis work is to connect hydrogeological features of the mine which can be used to develop a Hydrogeological Model of the Mine. The analyses have been mainly focusing on the three subjects; ... -
In-depth assessment on the structural geological and engineering geological condition of the weakness zone at Svandalsflona HPP
Olvik Thorbergsen, Aleksander (Master thesis, 2019)Stutakvelven er en sjakt med 45 graders helning som fungerer både som innløpstunnel og svingesjakt. Den er en del av Svandalsflona vannkraftverk som er lokalisert i et område preget av deformerte kaledonske skyvedekker. ... -
Influence of slaking and disintegration effect on the stability of water tunnels for hydropower
Selen, Lena; Panthi, Krishna Kanta (Chapter, 2019)The manuscript presents initial results of a potential linkage between the mineral composition and structural strength in geological samples from a hydropower tunnel currently under construction. Changes in rock properties ... -
Ingeniørgeologisk evaluering og stabilitetsvurdering av Forbordsfjelltunnelen
Hauge, Dina Elisabeth Moter (Master thesis, 2022)I forbindelse med utbygging av ny E6 i Trøndelag skal det etableres toløpstunnel gjennom Forbordsfjellet. Ved utgraving av underjordsåpninger vil bergmassen rundt åpningen bli preget av endrede spenningsforhold og ... -
Ingeniørgeologisk vurdering av Vettakollen Høydebasseng
Berget, Eivind Sømme (Master thesis, 2013)Byggingen av Vettakollen Høydebasseng er et ledd i utbedringen av å sikre vannforsyningen til bydelene Vestre og Nordre Aker i Oslo. Høydebassenget består av to haller med bredde 17,5 meter, høyde 12 meter og en lengde på ... -
Instrumentation and pore pressure monitoring technique for unlined tunnels of Norwegian hydropower projects – a case study
Neupane, Bibek; Panthi, Krishna Kanta; Vereide, Kaspar (Chapter, 2019)The power market in Norway was deregulated in 1991 and have caused power plants to operate with more frequently varying loads within short time periods. Such operation causes significant pressure fluctuations and unsteady ... -
Interpretation of deformation characteristics at Kaligandaki headrace tunnel using tunnel monitoring records
Shrestha, Pawan Kumar; Panthi, Krishna Kanta (Chapter, 2015)Displacement of rock mass around a tunnel opening varies according to the rock mass properties, insitu stress conditions and applied support in the tunnel. Such displacement is also altered by presence of bands of rock ... -
Investigation on the Effect of Cyclic Moisture Change on Rock Swelling in Hydropower Water Tunnels
Selen, Lena; Panthi, Krishna Kanta; Vergara, Maximiliano R.; Mørk, Mai Britt Engeness (Peer reviewed; Journal article, 2021)This manuscript investigates the interaction between cyclic wetting and drying, material composition/structure and swelling potential of weathered rocks. Laboratory tests were performed at the Norwegian University of ... -
Leakage potential through a shotcrete lined high-pressure headrace tunnel - An analysis on a case from Nepal
Panthi, Krishna Kanta; Basnet, Chhatra Bahadur (Chapter, 2019)The use of unlined / shotcrete lined pressure tunnels and shafts are very cost effective solutions for the hydropower project and therefore are being implemented worldwide. However, the ground conditions at the area of ... -
Leakage prediction and post-grouting assessment in headrace tunnel of a hydropower project
Katuwal, Tek Bahadur; Panthi, Krishna Kanta; Basnet, Chhatra Bahadur; Adhikari, Sailesh (Chapter, 2024)In the Himalayan region, tunnels are often constructed through complex and varying geological formations having rock mass with higher degree of jointing, faulting, folding, and weakness/shear zones. Such rock mass condition ... -
Long-term impact on unlined tunnels of hydropower plants due to frequent start/stop sequences
Neupane, Bibek (Doctoral theses at NTNU;2021:400, Doctoral thesis, 2021)Abstract The concept of unlined pressure tunnel design is well-tested and has a history of more than 100 years. In Norway, more than 95% of hydropower pressure tunnels are unlined and most of it was built between 1950 ... -
Lysebotn 2 kraftverk - Vurdering av potensialet for hydraulisk splitting i trykktunnel samt stabilitetsanalyser av kraftstasjon i fjell
Eide, Lars Emil Solli (Master thesis, 2015)Oppgradering av Lysebotn II kraftverk er i gang fra eksisterende installert effekt på 210 MW til 370 MW. Det høytliggende reservoaret gir høyt vanntrykk på nesten 7MPa ved konus som gjør at faren for hydraulisk splitting ... -
Methods Applied in the Prediction of Brittle Failure in Tunnels and Underground Caverns
Panthi, Krishna Kanta (Journal article; Peer reviewed, 2018)Tunnels and underground caverns located at greater depth (high rock cover or overburden) are subjected to high in-situ stress environment. Those rock mass that are relatively unjointed and massive are exposed to the brittle ... -
Mineralogical assessment of rocks of hydropower tunnels subjected to swelling
Henriksen, Lisa Henrika (Master thesis, 2022)Vannkraft tunneler lokalisert i svakt og svellende bergmasse er utsatt for stabilitets problemer og kollaps. Samarbeidspartneren Statkraft ønsker å støtte videre forskning som skal identifisere og vurdere svellende mineraler ... -
Norwegian Design Principle for High Pressure Tunnels and Shafts: Its Applicability in the Himalaya
Panthi, Krishna Kanta (Journal article; Peer reviewed, 2014)Cost effective, safe and long term sustainable hydropower development is a key for the lasting economic growth in the Himalayan region. Increasing pressure towards the use of renewal and environmentally friendly energy for ... -
Numerical analysis of stresses and displacements for the Tafjord slide, Norway
Panthi, Krishna Kanta; Nilsen, Bjørn (Journal article; Peer reviewed, 2006)Numerical modelling has been used for analyzing stresses and displacements for the very steep and more than 1,000 m high Heggura rock slope near Tafjord, Norway where a disastrous 3 million m3 rock slide occurred in 1934. ...