Browsing NTNU Open by Author "Basnet, Chhatra Bahadur"
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3D in-Situ Stress Model of Upper Tamakoshi Hydroelectric Project Area
Basnet, Chhatra Bahadur; Panthi, Krishna Kanta (Journal article; Peer reviewed, 2017)Reliable estimation of in-situ stress state is very important in implementing the shotcrete lined/unlined tunnels and shafts. The in-situ stress state of the area of concern is mainly governed by the gravityinduced stress, ... -
A dynamic analysis of in-situ stress state at the Upper Tamakoshi Hydroelectric Project area
Panthi, Krishna Kanta; Basnet, Chhatra Bahadur (Journal article; Peer reviewed, 2018)The in-situ stress condition in the rock mass is influenced by both tectonic and geological environment such as faulting and shearing in the rock mass. This influence is of considerable magnitude in the Himalayan region ... -
A dynamic stress state analysis at the pressure tunnel of Upper Tamakoshi HPP, Nepal
Panthi, Krishna Kanta; Basnet, Chhatra Bahadur (Chapter, 2018)In theory, in-situ stress state of an area of concern is mainly governed by gravity-induced stress, tectonic ac-tivity and topographic condition of that area. The tectonic and geological environment such as faulting and ... -
Analysis of Squeezing Phenomenon in the Headrace Tunnel of Chameliya Project, nepal
Basnet, Chhatra Bahadur; Shrestha, Pawan Kumar; Panthi, Krishna Kanta (Journal article; Peer reviewed, 2013)The headrace tunnel of Chameliya Hydroelectric Project, Nepal has faced severe squeezing problems from chainage 3+100m to 3+900m. Due to the severe squeezing and deformation, the tunnel cross section has narrowed considerably ... -
Analysis of unlined pressure shafts and tunnels of selected Norwegian hydropower projects
Basnet, Chhatra Bahadur; Panthi, Krishna Kanta (Journal article; Peer reviewed, 2018)Norwegian hydropower industry has more than 100 years of experiences in constructing more than 4000 km-long unlined pressure shafts and tunnels with maximum static head of 1047 m (equivalent to almost 10.5 MPa) reached at ... -
Applicability of Unlined/Shotcrete Lined Pressure Tunnels for Hydropower Projects in the Himalaya
Basnet, Chhatra Bahadur (Doctoral theses at NTNU;2018:357, Doctoral thesis, 2018)Nowadays, unlined or shotcrete lined pressure tunnels and shafts are used in hydropower projects worldwide. The prime requirements for these tunnels and shafts are that they should be economically attractive and should be ... -
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 ... -
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 ... -
Evaluation of earthquake impact on magnitude of the minimum principal stress along a shotcrete lined pressure tunnel in Nepal
Panthi, Krishna Kanta; Basnet, Chhatra Bahadur (Journal article; Peer reviewed, 2019)In situ stress condition in rock mass is influenced by both tectonic activity and geological environment such as faulting and shearing in the rock mass. This influence is of significance in the Himalayan region, where the ... -
Evaluation of in-situ stress state along the shotcrete lined high-pressure headrace tunnel at a complex Himalayan geological condition
Basnet, Chhatra Bahadur; Panthi, Krishna Kanta (Peer reviewed; Journal article, 2021)The Himalayan region is renowned with its complex topography and active tectonic movement, which causes accumulation and sudden release of strain energy instigating changes in the in-situ stress state. This paper evaluates ... -
Evaluation on the Squeezing Phenomenon at the Headrace Tunnel of Chameliya Hydroelectric Project, Nepal
Basnet, Chhatra Bahadur (Master thesis, 2013)Growing demand of electricity in Nepal can be fulfilled by hydropower generation. The huge potentiality of hydropower generation in Nepal is mainly due to abundant water resources and available geographical head due to ... -
Evaluering av hydraulisk splitting på Bjørnstokk kraftverk
Solli, Snorre Anneson Ledsaak (Master thesis, 2018)Bruken av uforede trykktunneler og -sjakter har en nesten 100 år lang historie i Norge. Dette har bidratt til utviklingen av designkriterier, kjent som norske tommelfingerregler. Hovedutfordringene ved uforede trykktunneler ... -
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 ... -
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 ... -
Planning and support estimation of underground powerhouse in the Himalayas
Adhikari, Sailesh; Panthi, Krishna Kanta; Basnet, Chhatra Bahadur; Katuwal, Tek Bahadur (Chapter, 2024)Underground structures like tunnels and caverns have major advantages in hydropower projects. Tunnels are used for transporting the water from the intake to the tailrace outlet through the turbines whereas caverns primarily ... -
Review on the Major Failure Cases of Unlined Pressure Shafts/Tunnels of Norwegian Hydropower Projects
Panthi, Krishna Kanta; Basnet, Chhatra Bahadur (Journal article; Peer reviewed, 2016)The Norwegian hydropower industry has more than 100 years of experience in constructing the unlined pressure shafts and tunnels. Most of the hydropower projects have long waterway systems consisting unlined high pressure ... -
Rock cut slope excavated for Settling basins of Seti Khola Hydropower Project
Panthi, Krishna Kanta; Basnet, Chhatra Bahadur (Chapter, 2023)Stability of a cut-slope at the headworks area of the hydropower projects is very important for smooth operation of hydropower plant. Underestimation during construction period may bring a catastrophic consequence. This ... -
Roughness evaluation in shotcrete-lined water tunnels with invert concrete based on cases from Nepal
Basnet, Chhatra Bahadur; Panthi, Krishna Kanta (Journal article; Peer reviewed, 2018)Most of the existing roughness estimation methods for water tunnels are related to either unlined or concrete/steel-lined tunnels. With the improvement in shotcrete technology, advancement in tunneling equipment and cost ...