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Jumelet, Daan (author), van Gent, M.R.A. (author), Hofland, Bas (author), Kuiper, C. (author)Physical model tests have been performed to study static stability of rock-armoured mild slopes. Current stability design formulae for steeper rock-armoured slopes focus on plunging and surging waves. Slopes of 1:6 and milder usually have more spilling breakers which decreases the load. Also, on mild slopes displaced rocks more often remain...journal article 2024
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Xu, Fuqiang (author), Song, Xianzhi (author), Li, Shuang (author), Shi, Yu (author), Song, G. (author), Lv, Zehao (author), Yi, Junlin (author)In the long-term mining of geothermal resources in hot dry rock (HDR), the change of thermal stress and pore pressure will increase fracture conductivity evolution, further improving production performance. The optimization and decision-making of the development scheme based on the impact of damage from fractures have yet to be reported. The...journal article 2024
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Ji, Jiayan (author), Song, Xianzhi (author), Yi, Junlin (author), Song, G. (author), Wang, Gaosheng (author)Fractures and caves are the main flow and storage channels for the karst geothermal reservoirs, and the water-rock reaction within them significantly affects the thermal performance. Most previous studies concentrated on the fractures, disregarding the impact of the pore water-rock reaction. The objective of this study is to explore the...journal article 2024
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Yong, Wen Pin (author), Menke, Hannah (author), Maes, Julien (author), Geiger, S. (author), Bakar, Zainol Affendi Abu (author), Lewis, Helen (author), Buckman, Jim (author), Bonnin, Anne (author), Singh, Kamaljit (author)Microporosity is commonly assumed to be non-connected porosity and not commonly studied in geoengineering industry. However, the presence of micropores plays a key role in connecting macropores and it can contribute significantly to the overall flow performance. In this study, targeted CO<sub>2</sub> storage carbonate fields in Southeast Asia...conference paper 2024
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Xu, Fuqiang (author), Shi, Yu (author), Song, Xianzhi (author), Wu, Wei (author), Song, G. (author), Li, Shuang (author)The development of hot dry rocks (HDRs) is of great significance to adjusting energy structure, alleviating energy shortage, reducing pollution, etc. Low-permeability granite is the predominant rock type in deep HDRs, making fractures the primary pathways for fluid circulation and heat extraction. The production of HDRs is significantly...journal article 2024
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Shafabakhsh, Paiman (author), Cordonnier, Benoît (author), Pluymakers, Anne (author), Le Borgne, Tanguy (author), Mathiesen, Joachim (author), Linga, Gaute (author), Hu, Yi (author), Kaestner, Anders (author), Renard, François (author)In many geological systems, the porosity of rock or soil may evolve during mineral precipitation, a process that controls fluid transport properties. Here, we investigate the use of 4D neutron imaging to image flow and transport in Bentheim sandstone core samples before and after in-situ calcium carbonate precipitation. First, we demonstrate...journal article 2024
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Hijaze, Eman (author), Gildor, Tsvia (author), Seidel, Ronald (author), Layous, Majed (author), Winter, M.R. (author), Bertinetti, Luca (author), Politi, Yael (author), Ben-Tabou de-Leon, Smadar (author)Biomineralization had apparently evolved independently in different phyla, using distinct minerals, organic scaffolds, and gene regulatory networks (GRNs). However, diverse eukaryotes from unicellular organisms, through echinoderms to vertebrates, use the actomyosin network during biomineralization. Specifically, the actomyosin remodeling...journal article 2024
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van Donselaar, Kevin (author)Large parts of the Netherlands lay below mean sea level. An extensive network of flood protection measures is in place to prevent flooding. Periodic safety assessment and reinforcement are required to guarantee a resilient system. Currently, in the Netherlands, an extensive sea dike reinforcement program is underway to meet the safety standards...master thesis 2023
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Verhagen, Ties (author)In the field of offshore engineering, subsea rock installation has emerged as a pivotal technique. As offshore operations extend to greater water depths, the deployment of a versatile fallpipe has become a cornerstone for precise rock particle placement. A comprehensive determination of the overall rock material volume required for installation...master thesis 2023
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SKORDILIS, VASILEIOS (author)The stability of rock engineering projects is tightly related to the mechanical behaviour of rock discontinuities. Although the mechanical behaviour of a discontinuity is often associated with shearing (sliding), experimental data have shown that it can be accompanied by more complex phenomena such as dilation and post-peak strength reduction....master thesis 2023
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- Hogenhuis, Tim (author) master thesis 2023
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van Alphen, Krijn (author)This thesis describes the investigation of the lateral monopile response in weak rock and the effect of a zone of crushed rock that is induced by driven installation. The goal of the investigation is to study the impact of the weaker zone around a monopile on the lateral response. The thesis focuses on the modelling of a monopile in a finite...master thesis 2023
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Fontijn, Jasper (author)Subsea rock installation is an offshore engineering process where rocks are placed on the seabed as protection of cables and pipelines and as scour protection. The inclined fallpipebis a new piece of equipment specifically designed to install rocks close to submerged structures. This thesis investigates the processes of the rock flow in and...master thesis 2023
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Redondo Garcia, Elara (author)The level of advancement in the understanding of the mechanical properties of volcanic rocks is comparatively lower than that of sedimentary rocks. As part of the SUCCEED Project (Synergetic Utilisation of CO2 Storage Coupled with Geothermal Energy Deployment), which aims to investigate the feasibility of injecting captured and produced CO2 into...master thesis 2023
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Zwarts, Sijmen (author)The first part of the thesis explores the process of homogenization, particularly for the permeability properties of rock samples. The Hill-Mandel postulate of energy consistency throughout the transitioning of scales is revisited since traditional homogenization methods rely on applying specific boundary conditions to enforce energy consistency...master thesis 2023
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Bui, Tuan Anh (author), Cammarata, Giuseppe (author), Choudary Kancharla, Varun (author), Brinkgreve, R.B.J. (author), Brasile, Sandro (author)Rock bolting plays an important role in different geo-engineering applications and its numerical modelling is crucial for the analysis and design of rock structures. Continuum modelling simulation of bolt-reinforced rock masses requires specific techniques to properly model the reinforcement system and its interaction with the rock mass, which...conference paper 2023
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Hofland, Bas (author), Houtzager, Daan (author), Caldera, Ganga (author), Antonini, A. (author), van Gent, M.R.A. (author), Bakker, Pieter (author), van der Lem, Cock (author)Single layer randomly placed armour units are used in many rubble mound breakwaters around the world. For these armour layers first extraction of units starts at high loads and can then progress quickly. Before the first extraction of a unit, typically no quantitative description of damage can be given. But additional to extraction, breakage of...journal article 2023
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A state-of-the-art review of Natural bitumen in pavement: Underlining challenges and the way forwardAnupam, K. (author), Akinmade, O.D. (author), Kasbergen, C. (author), Erkens, S. (author), Adebiyi, Festus (author)The demand for alternative bitumen which could fully/partially replace Petroleum sourced bitumen for pavement construction is globally increasing. The increase in demand can be associated with several factors: depletion in crude oil resources, advances in crude oil refining processes, increased demand for highway infrastructure, and regional...review 2023
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Koohmishi, Mehdi (author), Guo, Y. (author)Parent rock strength and crumb rubber modification are two critical mechanical parameters that significantly decide the ballast layer degradation subjected to train dynamic loading. Using machine learning to predict ballast degradation considering these two parameters is helpful for deciding ballasted track maintenance cycle. In the current...journal article 2023
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Xu, Fuqiang (author), Shi, Yu (author), Song, Xianzhi (author), Song, G. (author), Li, Shuang (author)Hot dry rocks (HDRs), as an essential renewable energy source, its development has received widespread attention, especially for heat extraction. The fracture is the main seepage and heat transfer channel of circulating fluid in dense HDR reservoirs, and its conductivity evolution significantly affects the production performance. Most...journal article 2023