Blar i NTNU Open på forfatter "Li, Charlie Chunlin"
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Laboratory tests and numerical modeling of block models for evaluation of rock mass behaviour when subject to an anchoring load
Aasbø, Karsten Sannes (Master thesis, 2021)Bergankere består av lastbærende komponenter, oftest stag eller kabler, og benyttes til å forankre konstruksjoner eller til å forsterke grunnen, eksempelvis til forankring av demning og brofundamenter samt forsterkning av ... -
A New Method for Predicting the Crack Propagation Process of Brittle Rock under Thermo-Hydro-Mechanical Loading Conditions
Yi, W.; Rao, Qiuhua; Li, Z.; Li, Charlie Chunlin (Peer reviewed; Journal article, 2021)Prediction on the crack propagation process of brittle rock under Thermo-Hydro-Mechanical (THM) loading conditions is very important for crack-arrest design and disaster prevention in deep rock engineering. Although currently ... -
Numerical Modeling of the Underground Machine Halls in Tala and Chukha Hydropower Plants
Ligård, Magnus Aune (Master thesis, 2013)The Kingdom of Bhutan is part of South Asia. It is located at the eastern end of the Himalayas, encircled by India in the south, east, west, and China in the North. A major part of the electricity consumed in Bhutan ... -
Performance of a fully grouted GFRP rock bolt under combined pull and shear loading
Hovgaard, M.B.; Li, Charlie Chunlin; Mikkelsen, L.P. (Chapter, 2020)Glass Fiber Reinforced Polymer (GFRP) rock bolts is gaining attention, as an alternative to steel bolts, for permanent rock support in civil underground infrastructures like road tunnels. GFRP holds many advantages for ... -
Performance of Fully Grouted GFRP Rock Bolt in Combined Pull and Shear
Hovgaard, Mikkel Baastrup (Master thesis, 2019)Glass Fiber Reinforced Polymer (GFRP) bjergsikringsbolte har fået opmærksomhed, som et alternativ til stålbolte for permanent bjergsikring. GFRP har mange fordele til dette formål, herunder lavere vægt og miljøbelastning ... -
Performance of Identical Rockbolts Tested on Four Dynamic Testing Rigs Employing the Direct Impact Method
Li, Charlie Chunlin; Hadjigeorgiou, J.; Mikula, P; Knox, G.; Darlington, B.; Royer, R.; Pytlik, A.; Hosp, M. (Peer reviewed; Journal article, 2021)Impact drop tests are routinely used to examine the dynamic performance of rockbolts. Numerous impact tests have been carried out in the past decades on independently designed, constructed and operated testing rigs. Each ... -
Physics of Strain Burst in Hard Rock – Fracture characteristics and influences of the stiffness of the host rock mass
Wan, Wenkai (Doctoral theses at NTNU;2022:242, Doctoral thesis, 2022)Rock burst is a phenomenon in which rock disintegrates, accompanied by the ejection of debris. Strain burst is a type of rock burst. It is directly associated with stress concentration after rock excavation. Overstressed ... -
Potential applications of deep learning in automatic rock joint trace mapping in a rock mass
Chiu, Ka Yi; Li, Charlie Chunlin; Mengshoel, Ole Jakob (Peer reviewed; Journal article, 2023)In blasted rock slopes and underground openings, rock joints are visible in different forms. Rock joints are often exposed as planes confining rock blocks and visible as traces on a well-blasted, smooth rock mass surface. ... -
Principles and methods of rock support for rockburst control
Li, Charlie Chunlin (Peer reviewed; Journal article, 2021)This paper presents the principles of rock support for rockburst control and three rockburst support systems used in deep metal mines. Before the principles of rock support are presented, rock fracture related to strain ... -
Principles of rockbolting design
Li, Charlie Chunlin (Journal article; Peer reviewed, 2017)This article introduces the principles of underground rockbolting design. The items discussed include underground loading conditions, natural pressure zone around an underground opening, design methodologies, selection of ... -
Pull-out and critical embedment length of grouted rebar rock bolts - mechanisms when approaching and reaching the ultimate load
Høien, Are Håvard; Li, Charlie Chunlin; Zhang, Ning (Peer reviewed; Journal article, 2021)Rock bolts are one of the main measures used to reinforce unstable blocks in a rock mass. The embedment length of fully grouted bolts in the stable and competent rock stratum behind the unstable rock blocks is an important ... -
Reservoir slope stability assessment for the Moglicë Hydropower Project in Albania
Eidset, Tonje Mek (Master thesis, 2019)Statkraft investerer i albansk vasskraft og har gjort dette sidan 2007. Dei eig og driv prosjektselskapet Devoll Hydropower Sh.A, eit dotterselskap som byggjer Devoll vasskraftprosjekt (DHPP). Prosjektet er lokalisert i ... -
Rock bolting and pull out test on rebar bolts
Kristjánsson, Gunnar (Master thesis, 2014)Pull out tests were carried out in the laboratory of rock mechanics at Norwegian University of Science and Technology (NTNU) for the purpose of determining the critical embedment length of fully grouted rebar bolts. The ... -
Rock Breaking under Rolling TBM Disc Cutters in Hard Rock Conditions – Visualization and documentation of cracks
Vassenden, Solveig (Doctoral theses at NTNU;2019:100, Doctoral thesis, 2019)Tunneler kan drives med boring og sprengning eller ved bruk av en tunnelboremaskin (TBM). Tunneboremaskinen har et roterende sirkulært hode med påmonterte kuttere av stål og kalles kutterhodet. Berget brytes ved at kutterene ... -
Small Block Model Tests for the Behaviour of a Blocky Rock Mass Under a Concentrated Rock Anchor Load
Grindheim, Bjarte; Aasbø, Karsten Sannes; Høien, Are Håvard; Li, Charlie Chunlin (Peer reviewed; Journal article, 2022)Rock anchors are used to stabilise large-scale infrastructure such as the foundations of high buildings or road cuts, and their failure could lead to severe economic and social consequences. A rock anchor can fail in one ... -
Stabilitetsanalyse av bergskjæringer med vurdering av passiv og aktiv bergsikring
Austad, Johanne (Master thesis, 2022)Ved etablering av bergskjæringer vil analyse og vurdering av stabilitet være nødvendig for å opprettholde sikkerheten langs veien. For at resultatene fra stabilitetsberegningene skal være pålitelige er det avgjørende med ... -
Stabilitetsanalyse og bergsikringstiltak for produksjonstunnelen på Vassfjell Pukkverk
Hansen, Marit Lucy Bergsland (Master thesis, 2020)I nærmere 50 år har Franzefoss Pukk AS driftet et dagbrudd og pukkverk på Vassfjell i Trøndelag. Spenningsforholdene i bergmassen endrer seg i takt med uttak av bergmasser, som kan påvirke stabiliteten til en produksjonstunnel ... -
Stability Analysis for Underground Power House at Tala Hydroelectric Power Project, Bhutan
Dorji, Gorab (Master thesis, 2012)Concerning socio-economic development of Bhutan, Hydropower development plays a vital role. Envisaging a total theoretical potential of 30,000 MW, according to Power System Master Plan, 2002, the government now has taken ... -
Stability analysis of an olivine quarry at Åheim, Western Norway
Åstebøl, Hedvig (Master thesis, 2020)Denne oppgaven presenterer en stabilitetsanalyse av Sibelco Nordics olivinbrudd på Aheim. Analysen undersøkte stabiliteten til dagens bakvegg og bakveggen i det endelige bruddet. Analysen ble utført ved bruk av numerisk ... -
Updated in situ rock stresses in Norway based on recent estimations and measurements
Simonsen, Aurora; Li, Charlie Chunlin (Chapter, 2019)This paper presents the current in situ rock stresses in Norway. Information about the stress state was obtained by estimations from focal mechanism, borehole breakout and drilling-induced fractures, and via overcoring and ...