Browsing Institutt for geovitenskap og petroleum by Journals "Bulletin of Engineering Geology and the Environment"
Now showing items 1-13 of 13
-
Analysis of the plastic deformation behavior of schist and schistose mica gneiss at Khimti headrace tunnel, Nepal
(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 ... -
Analysis of the stabilising effect of ribs of reinforced sprayed concrete(RRS) in the Løren road tunnel
(Journal article; Peer reviewed, 2018)The Løren tunnel is a road tunnel at Ring road 3 in Oslo, Norway. The tunnel has a length of 915 m in rock, has two tubes with three lanes and breakdown fields, and was first opened in 2013. For rock support in the case ... -
Assessment of the effect of stress anisotropy on tunnel deformation in the Kaligandaki project in the Nepal Himalaya
(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 ... -
Detailed engineering geological assessment of a shotcrete lined pressure tunnel in the Himalayan rock mass conditions: a case study from Nepal
(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
(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 ... -
Evaluation of rock bursting phenomena in a tunnel in the Himalaya
(Journal article; Peer reviewed, 2012)Tunnels passing beneath deep rock cover(overburden) are subject to instabilities caused by induced rock stresses. In a relatively unjointed massive rock mass the instability is associated with rock spalling/rock bursting, ... -
Experimental triaxial testing of swelling gouge materials
(Journal article; Peer reviewed, 2019)Adequate rock support in weakness zones that may contain swelling minerals poses one of the main challenges of excavating tunnels in hard rock conditions. Deformations under such conditions are influenced by several factors, ... -
Fouling and clogging surveillance in open loop GSHP systems: A systematic procedure for fouling and clogging detection in the whole groundwater circuit
(Journal article; Peer reviewed, 2020)Fouling and clogging are some of the major water quality problems encountered in open loop ground source heat pump (GSHP) systems and aquifer thermal energy storage (ATES) systems. Here we present a surveillance strategy ... -
How to avoid gas clogging in groundwater heat pump systems: a case study from the Lena terrasse system in Melhus, Norway
(Peer reviewed; Journal article, 2022)Vacuum pressures are unfavorable in water pipes since they pose a risk to degassing dissolved gases from the water and air in-leakage. If the water flow rate through the pipeline is too low, gas bubbles will rise to local ... -
Large-size aggregates for road construction – a review of standard specifications and test methods
(Peer reviewed; Journal article, 2019)Construction aggregates are essential structural components in road structures, whether in unbound form or combined with cement or bitumen. Specifications and test methods for aggregates are standardised, but current ... -
Numerical analysis of stresses and displacements for the Tafjord slide, Norway
(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. ... -
Online remote-controlled and cost-effective fouling and clogging surveillance of a groundwater heat pump system
(Peer reviewed; Journal article, 2021)Fouling and clogging of groundwater wells and heat exchangers are among the major operational challenges for groundwater heat pump (GWHP) and aquifer thermal energy storage (ATES) systems. This article presents the application ... -
Slope stability assessment of an open pit mine using three-dimensional rock mass modeling
(Journal article; Peer reviewed, 2019)Rock mass classification systems are commonly used to evaluate the likelihood of instability in mining environments. Most frequently used classification systems are the rock mass rating (RMR), geological strength index ...