Blar i NTNU Open på forfatter "Li, Charlie Chunlin"
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3D BEM Modelling of Tala Hydroelectric Powerhouse Complex, Bhutan
Ingólfsson, Jónas Thor (Master thesis, 2014)The utilization of the vast hydropower potential the Himalayas possess is growing in the Kingdom of Bhutan. Export of electricity to India is now the largest contributor to the economic well being of the country and an ... -
A review on the performance of conventional and energy-absorbing rockbolts
Li, Charlie Chunlin; Stjern, Gisle; Myrvang, Arne M. (Journal article; Peer reviewed, 2014)This is a review paper on the performances of both conventional and energy-absorbing rockbolts manifested in laboratory tests. Characteristic parameters such as ultimate load, displacement and energy absorption are reported, ... -
An experimental and multiscale numerical study of mechanical and tribological behavior of cemented tungsten carbides and hard rocks in percussive drilling
Tkalich, Dmitry (Doctoral theses at NTNU;2016:284, Doctoral thesis, 2016)Presented research is about deep rotary-percussive drilling (RPD) in hard rock formations. RPD is recognized as an effective method for tunnel excavation and well boring in hard igneous rocks. Rock fragmentation and chipping ... -
Analyse av vibrasjonsmålinger fra Eiganestunnelen og numerisk modellering av internkrysning ved E39 Rådal-Nordås-Flyplassvegen og krysning av Folldalstunnelen.
Kolden, Hilde Lund (Master thesis, 2016)Prosjektet Rådal Nordås Flyplassveien skal forbedre og effektivisere transportveien mellom Os og Bergen. Prosjektet omfatter vegtunneler i en trekantforbindelse, med flere tunnelkrysninger, der to av dem har svært liten ... -
Bergmekanisk analyse av Haukeland holdeplass - Numerisk modellering i programvarene RS2 og UDEC
Bergum, Anders (Master thesis, 2019)Bybanen i Bergen skal utvides med en ny linje fra Bergen sentrum til Fyllingsdalen. I denne sammenheng skal det bygges en underjordisk holdeplass ved Haukeland universitetssykehus. Dette vil by på komplekse bergtekniske ... -
Bergmekanisk undersøkelse av spenningsrelaterte problem i Drammenstunnelen
Hommedal, Ådne Einarsson (Master thesis, 2022)I forbindelse med utbyggingen av jernbanetunnelen Drammenstunnelen fra Drammen stasjon til Skoger, møtte drivende entreprenør Veidekke på flere spenningsrelaterte problemer. Lav overdekning og høye horisontalspenninger ... -
Bæreevnen til utvidbare friksjonsbolter ved varierende installasjonstrykk, borehullruhet og borehulldiameter. Basert på uttrekkstester fra betongblokk og utviding av bolter i friluft
Aure, Andreas (Master thesis, 2022)18 uttrekkstester ble utført på utvidbare friksjonsbolter installert i en betongblokk. Boltene er av Swellex-typen som installeres med vanntrykk, og ikke behøver mørtel eller polyester. Ved uttrekkstestene ble deformasjonen ... -
Conceptual models for rock burst and energy transformations in strain burst
Li, Charlie Chunlin (Chapter, 2020)The occurrence of a rock burst event depends on two requisites: the secondary stresses after rock excavation must be beyond the rock strength and there are excessive energy releases from the rock mass in addition to the ... -
Dagbruddsstabilitet i Norcem Kjøpsvik
Thoresen, Sverre Paulsen (Master thesis, 2019)Sammendrag Dagbruddsområdet til Norcem Kjøpsvik er i en situasjon hvor en optimalisering av dagbruddets vegg er av interesse. Denne oppgavens mål er å undersøke total- og detaljstabilitetsforholdene for endelig planlagt ... -
Discussions on rockburst and dynamic ground support in deep mines
Li, Charlie Chunlin; Mikula, P; Simser, B; Hebblewhite, B; Joughin, W; Feng, X.W.; Xu, N.W. (Peer reviewed; Journal article, 2019)The paper is a summary of discussions on four topics in rockburst and dynamic ground support. Topic1 is the mechanisms of rockburst. Rockburst events are classified into two categories in accordancewith the triggering ... -
Dynamic rock support in burst-prone rock masses
Li, Charlie Chunlin (Chapter, 2018)Rockburst occurs in hard and strong rock after excavation when the in situ rock stresses are high. The “driving force” for rockburst is the energy released from the rock mass. The released strain and seismic energy is ... -
Effects of Confining Stress on the Post-Peak Behaviour and Fracture Angle of Fauske Marble and Iddefjord Granite
Zhang, Huijian; Li, Charlie Chunlin (Peer reviewed; Journal article, 2019)In general, the strength of rock and rock mass is non-linearly associated with the confining stress. Thus, the non-linear Hoek–Brown strength criterion (Hoek and Brown 1980, 1982) is more appropriate than the linear ... -
Estimating the roughness factor using Lidar scanning system: Comparison of tunnel surfaces before and after applied shotcrete
Selmer, Ann-Kristin (Master thesis, 2014)This thesis gives a suggestion of a method for extracting the roughness factor for estimating the sprayed concrete volume in tunnel applications. The determination of the roughness factor today is based on experience and ... -
Failure criterion of hard rock and laboratory research of rockburt
Tie, Yi (Master thesis, 2018)In deep excavation, typical instability subjected to the high induced stress is commonly controlled by the crack initiation, propagation, and accumulation in the rock mass. The surrounding rock mass in the region of stress ... -
Forankring av kunstig sjøbunn - Stabilitet av berg mot uttrekking
Bjørnsrud, Håkon Walter (Master thesis, 2016)Et nytt konsept, utviklet av ÅF Reinertsen, for kryssing brede og dype fjorder går ut på å etablere en kunstig sjøbunn 30 meter under havnivå som overliggende broløsninger kan forankres mot. Den kunstige sjøbunnen spennes ... -
Full-scale pullout tests of rock anchors in a limestone quarry focusing on bond failure at the anchor-grout and grout-rock interfaces
Grindheim, Bjarte; Li, Charlie Chunlin; Høien, Are Håvard (Peer reviewed; Journal article, 2023)Rock anchors are a common safety measure for stabilising large-scale infrastructure, such as bridge towers, retaining walls, rock slopes and windmills. There are four principal failure modes for rock anchors: (a) tensile ... -
Influence of ice to the stability of engineering rock slopes and ice securing measures in Cold Regions
Sánchez Moreno, Miguel Angel (Master thesis, 2018)In cold regions, freezing is an important factor for weathering processes in rock slopes. The presence of ice in discontinuities can contribute to maintain the stability of rock slopes. But degrading permafrost and thawing ... -
Ingeniørgeologisk kartlegging og analyse av berggrunnen for ny E18 Bambletunnel
Strømsvåg, Jone (Master thesis, 2013)For ny E18 Bambletunnel gjennom Høgenhei er det gjennomført en ingeniørgeologisk kartlegging og analyse. Tunnelen går gjennom Oslofeltets kambrosilurske avsetninger, hovedsakelig leirskifer og kalkstein som er omdannet til ... -
Investigating Load Arches and the Uplift Capacity of Rock Anchors: A Numerical Approach
Grindheim, Bjarte; Trinh, Nghia Quoc; Li, Charlie Chunlin; Høien, Are Håvard (Journal article; Peer reviewed, 2024)Rock anchors, which can withstand substantial forces and are essential for securing the foundations of the built environment, can fail due to steel tensile failure, bond detachment, or rock mass fracturing through uplift. ... -
ISRM Suggested Method for Determining the Basic Friction Angle of Planar Rock Surfaces by Means of Tilt Tests
Alejano, L.R.; Muralha, Jose; Ulusay, R.; Li, Charlie Chunlin; Pérez-Rey, I.; Karakul, H.; Chryssanthakis, Panayiotis; Aydan, Ömer (Peer reviewed; Journal article, 2018)The basic friction angle plays a key role when estimating the shear strength of discontinuities for rock engineering projects, since a large body of research has shown that rock joint shear strength models that consider ...