Browsing NTNU Open by Author "Shrestha, Pawan Kumar"
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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 the plastic deformation behavior of schist and schistose mica gneiss at Khimti headrace tunnel, Nepal
Shrestha, Pawan Kumar; Panthi, Krishna Kanta (Journal article; Peer reviewed, 2014)The Khimti headrace tunnel experienced instability related to tunnel deformations in several tunnel stretches through mica schist and schistose mica gneiss rock mass. The monitored convergence pattern indicated that the ... -
Assessment of the effect of stress anisotropy on tunnel deformation in the Kaligandaki project in the Nepal Himalaya
Shrestha, Pawan Kumar; Panthi, Krishna Kanta (Journal article; Peer reviewed, 2015)Most of the analytical approaches that are available for assessing plastic deformation in tunnels that pass through weak, schistose, and foliated rock masses assume an isostatic stress state. However, in situ stresses are ... -
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 ... -
Estimating Tunnel Strain in the Weak and Schistose Rock Mass Influenced by Stress Anisotropy: An Evaluation Based on Three Tunnel Cases from Nepal
Panthi, Krishna Kanta; Shrestha, Pawan Kumar (Journal article; Peer reviewed, 2018)Total plastic deformation in tunnels passing through weak and schistose rock mass consists of both time-independent and time-dependent deformations. The extent of this total deformation is heavily influenced by the rock ... -
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 ... -
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 ... -
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 ... -
Plastic deformation behavior in tunnel in schist and Schistose Mica Gneiss based on a case from Nepal Himalaya
Shrestha, Pawan Kumar; Panthi, Krishna Kanta (Chapter, 2012)Plastic deformation in tunnels is one of the few tunnel stability challenges that are being faced in the Himalayan region. Severe tunnel deformations have been recorded, particularly when tunnel passed through plastically ... -
STABILITY ASSESSMENT OF THE UNDERGROUND CAVERNS FOR THE ETALIN HYDROELECTRIC PROJECT, INDIA
Seemakurti, Naga Venkata Satish (Master thesis, 2014)In this thesis an attempt has been made to apply the Norwegian design principles for alternate design of unlined / shotcrete lined tunnel for Head Race Tunnels of Etalin Hydroelectric project, India. The detailed stability ... -
Stability of tunnels subject to plastic deformation – a contribution based on the cases from the Nepal Himalaya
Shrestha, Pawan Kumar (Doktoravhandlinger ved NTNU, 1503-8181; 2014:305, Doctoral thesis, 2014)The purpose of excavating a tunnel is not fulfilled unless it is stable. One of the major causes of instability in tunnels is induced stresses around it. Tunnels excavated in weak and schistose rock mass below high overburden ...