Miroslav Marence

Miroslav Marence
IHE Delft Institute for Water Education | UNESCO-IHE · Department of Water Science and Engineering

Dr. techn. Dipl.-Ing.

About

75
Publications
58,791
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
306
Citations
Citations since 2017
23 Research Items
186 Citations
20172018201920202021202220230102030405060
20172018201920202021202220230102030405060
20172018201920202021202220230102030405060
20172018201920202021202220230102030405060
Introduction
Miroslav Marence currently works at the Department of Water Science and Engineering, IHE Delft Institute for Water Education as associate professor in Dam and Hydropower. Additionally Miroslav works in Poyry Energy and a consaltant in field of hydropower. He research in Engineering Education, Structural Engineering with special concer on dam and power water way design. His current project is 'implementation of hydropower energy generation in existing hydraulic structures'
Additional affiliations
September 2009 - present
IHE Delft Institute for Water Education
Position
  • Professor (Associate)
Description
  • Associate professor in Hydropower, Dams, Reservoirs and Rock Mechanics

Publications

Publications (75)
Article
The energy transition requires large-scale storage to provide long-term supply and short-term grid stability. Though pumped hydro storage is widely used for this purpose, regions without natural topography do not have the potential for traditional high-head pumped hydro storage. To address this, multiple projects for low-head and seawater pumped hy...
Article
Full-text available
To counteract a potential reduction in grid stability caused by a rapidly growing share of intermittent renewable energy sources within our electrical grids, large scale deployment of energy storage will become indispensable. Pumped hydro storage is widely regarded as the most cost-effective option for this. However, its application is traditionall...
Chapter
This article discusses three increasingly-used approaches for more sustainable operations and management of hydropower dams: environmental flows, small hydropower, and dam decommissioning. For each topic, we illustrate the management approach drawing on examples from global case studies, discuss evidence for improved sustainability, and identify be...
Chapter
Application of seawater pumped storage systems with special implementation on Small Island Developing States (SIDS). Whole document could be uploaded from https://www.hydropower.org/publications/innovative-pumped-storage-hydropower-configurations-and-uses
Article
In the last few decades, the energy demand is increasing globally which, given the present dependency of the energy generation on fossil fuels, results in a continuous increase in CO2 emissions. In an isolated electric grid system like in the SIDS, the majority of the electricity is produced by fossil fuels, therefore most of the SIDS nations are n...
Conference Paper
Full-text available
Capacity building is the process allowing individuals, interested groups and organizations to obtain, improve, and retain skills, knowledge, tools, equipment, and other resources needed to do their jobs competently. Capacity building mobilises the capability of a society or a community to identify and understand its development issues, to act to ad...
Conference Paper
Full-text available
Composite membrane linings are a possible and economical alternative to steel linings in hydraulic pressure tunnels. The system consists of a sheet of plastic material (geomembrane) that is placed between the shotcrete that stabilizes the rock (primary lining) and the inner concrete ring (final lining). Traditionally, the design of hydraulic pressu...
Conference Paper
In the Lower Rhine river two hydro-power plants have been built at weirs. The third, most upstream weir at Driel was considered as well, but at the time (1988) could not be made feasible due to the low head difference at Driel. Developments in low-head hydro-power have given new possibilities and reason for reassessment. Locations such as Driel, wh...
Conference Paper
Full-text available
Myanmar is rich in water resources with four main rivers: Ayeyarwady, Chindwin, Sittaung, Thanlwin rivers. It has a great potential for a number of hydropower projects with its abundant water resources and topographical feature of a high difference in elevation. The hydropower potential is estimated to be more than 100,000 MW in terms of installed...
Article
Full-text available
Climate change with extreme hydrological conditions, such as drought and flood, bring new challenges to seepage behavior and the stability of earthfill dams. Taking a drought-stricken earthfill dam of China as an example, the influence of drought-flood cycles on dam seepage behavior is analyzed. This paper includes a clay sample laboratory experime...
Presentation
Introductory presentation for the event Towards the circularization of hydroelectricity using the existing hydraulic infrastructure, organized by Mário Franca and Miroslav Marence (IHE Delft)
Article
Full-text available
Run-of-River (RoR) hydropower plants are one of the most viable and environmentally friendly energy sources. The development of this type of hydropower projects is highly dictated by technical feasibility and financial viability of the project which reflects in the optimal configuration of the system. These, technical feasibility and financial viab...
Preprint
Full-text available
This article outlines some engineering aspects of the Beyhan Kaleköy HEPP Cascade on the Murat River, a tributary of the Euphrat River in Eastern Turkey. The cascade consists of four dams in an area with medium to high seismic loads. The projects are located in a zone influenced by the East Anatolian Fault Zone (EAF). High emphasis has been placed...
Conference Paper
Full-text available
Hydropower potential is widely recognizable as the most important low-carbon electricity source. Nevertheless, implementation struggles with restrictions and negative image. High construction cost and social and environmental impact additionally discourage new developers. Installation of new hydropower plants in existing water infrastructures, with...
Conference Paper
Full-text available
Structural reliability design is not a common used analysis and safety assessment method in concrete dam design. Uncertainties in the material behavior definition and also in loading are mostly neglected and the structure is validated based on the deterministic approach resulting in the deterministic safety factor determination. Probability-based m...
Conference Paper
Full-text available
Safety of dams is a matter of national importance and the dams represent one of the most surveillance civil structures. Continuous monitoring and evaluation of the measured values are part of the dam safety measurement systems. The arch dam deformations are mostly driven by the fluctuation of the water load and seasonal change of the water and air...
Conference Paper
Full-text available
Water resources systems are expected to be affected due to climate change with consequences on sustainable operation and management of reservoirs. Here with assessed the impacts of climate change on the reservoir operation of hydropower dams in the Citarum River Basin in Indonesia. There are three cascade dams operating in this river basin: Sagulin...
Article
Full-text available
This paper presents the mechanical and hydraulic behaviour of passively prestressed concrete-lined pressure tunnels embedded in elastic transversely isotropic rocks subjected to non-uniform in situ stresses. Two cases are distinguished based on whether the in situ vertical stress in the rock mass is higher, or lower than the in situ horizontal stre...
Article
Full-text available
Dams are essential for water storage and hydropower generation, but change river flow patterns and endanger local environments. Dam projects may further exacerbate already existing problems in trans-boundary rivers. We consider three scenarios of institutional factors: (1) each country pursues its own interests, (2) efficient cooperation along the...
Chapter
Full-text available
Most of the best feasible hydropower sites in Europe have been developed and only half of technically feasible potential is still available for development. Construction of each new hydropower plant in Europe is loaded by very strong opposition and restrictive existing environmental and administrative procedures. These restrictions caused nearly fu...
Research
Full-text available
This article presents the response of an elastic cross anisotropic rock mass to circular excavation by using analytical and numerical method.
Conference Paper
Full-text available
Power tunnel of Arkun Dam is one of the longest energy tunnels in Turkey with approximately 14 km of length and 6,4 m inner diameter, lined by a concrete lining. Pre-stressing by grouting was used to increase the bearing capacity of the concrete lining against internal water pressure loads, to reduce cost and the duration of construction. The high...
Conference Paper
Full-text available
Concrete gravity dams are commonly used on sites where the valley shape and foundation is not appropriate (strength and stiffness) for an arch dam. For such dams mostly simple 2D calculations, including linear dynamic analyses by pseudo-static and - more sophisticated - response spectra analyses, are carried out for the dam structure stability eval...
Chapter
Full-text available
Based on the non-linear finite element analysis, the maximum bearing capacity of a plain circular concrete lining subjected to external and internal pressure is investigated. Numerical results regarding elastic stresses and deformations are compared with those calculated using the classical thick-walled cylinder theory. Referring to the discrete cr...
Conference Paper
Full-text available
The paper presents a short review on modelling method for a circular tunnel excavated in the dry rock mass where the in situ state of stress is uniform. The rock mass was assumed to behave elastically and two cases were examined: whether the rock mass has an isotropic elastic property or not. A two-dimensional plain strain elastic-plastic Jointed...
Conference Paper
Full-text available
Based on the non-linear finite element analysis, the maximum bearing capacity of a plain circular concrete lining subjected to external and internal pressure is investigated. Numerical results regarding elastic stresses and deformations are compared with those calculated using the classical thick-walled cylinder theory. Referring to the discrete cr...
Article
Full-text available
The bearing capacity of prestressed concrete-lined pressure tunnels is governed by the in situ stress of rock mass, which generally has different magnitudes in the vertical and horizontal direction. Two cases were distinguished, based on whether the vertical stress is greater than the horizontal stress or not. By means of a finite element model (FE...
Article
Full-text available
T he effectiveness of the internal water pressure at the lining extrados in a pressure tunnel depends predominantly on the number of cracks and the width of the crack openings. The width of cracks can be estimated based on the total circumferential deformation of the rock mass, which is governed not only by mechanical boundary pressures, but also b...
Article
Full-text available
Pressure tunnels are in operation subjected to internal water pressure. When the hoop tensile stress acting at the lining intrados exceeds the tensile strength of concrete, longitudinal cracks occur in the concrete lining. As a consequence of crack openings, the internal water pressure will act at the lining extrados and cause high local water loss...
Article
Full-text available
In this study, a two-dimensional plane strain finite element model is used for the prediction of mechanical and hydraulic behaviour of pre-stressed concrete-lined pressure tunnels. Results obtained from numerical models are presented and compared with the one calculated using analytical solutions.
Conference Paper
Full-text available
In this paper, the design of concrete-lined pressure tunnels prestressed by grouting and situated above the groundwater level is presented. The bearing capacity of pressure tunnels is improved by injecting high pressure cement grout into the circumferential gap between the concrete lining and the rock mass. The study deals with the quantification o...
Article
Full-text available
Plain concrete lining of pressure tunnels are not absolutely tight and water can seep out of the tunnel. Seeped water is lost of energy in hydropower system, but can also cause serious stability problems in the surrounding rock mass. If the rock mass around the tunnel is tight (originally or tighten by grouting) seeped water, however, stays in the...
Conference Paper
Full-text available
Seepage is one of the major causes of failure of irrigation headworks constructed on permeable foundation in the Terai (plain) Region of Nepal. There is an urgent need to upgrade these schemes in order to meet the increasing food demand. A seepage problem was seen at the headwork of Chanda Mohana Irrigation Scheme, Sunsari situated at the confluenc...
Article
Full-text available
Seepage is one of the major causes of failure of irrigation headworks constructed on permeable foundation in the Terai (plain) Region of Nepal. There is an urgent need to upgrade these schemes in order to meet the increasing food demand. A seepage problem was seen at the headwork of Chanda Mohana Irrigation Scheme, Sunsari situated at the confluenc...
Article
Full-text available
The Hydropower Plant Ermenek (300 MW with 1000 GWh/a) is under construction by an Austrian-Turkey Consortium under the supervision of General Directorate of State Hydraulic Works (DSI). Pressure Tunnel Excavation Works: The pressure tunnel of the HEPP Ermenek with a length of 8028 m was excavated by TBM, which had an excavation diameter of 6.60 m....
Conference Paper
Full-text available
Understanding of the ground complexity and rock mass behaviour are essential for optimal geotechnical design of underground structures. The recommendations of the Austrian Geotechnical Society define procedure and parameters important for underground design, with special concern on the parameters vital for the excavation and the primary support. Th...
Article
Full-text available
The Ermenek Dam & Hydroelectric Power Plant Project (300 MW installed output) together with the Ermenek Tunnel is one of several, whose contracts were agreed on between Turkey and Austria. Whereas some of them are still being executed, others have been completed. In the following article various sections of the project are presented by different me...
Conference Paper
Full-text available
The Ermenek hydro power plant, currently under construction, with numerous underground facilities represents a big challenge the rock mechanics and tunneling works, especially for the pressure tunnel situated in the very heterogeneous rock mass with exchanging of weak and hard rock units. The tunnel is excavated by TBM, lined with concrete lining a...
Conference Paper
Full-text available
Practical examples of rock mechanical design are shown from the Ermenek hydro power plant which is currently under construction in Turkey. It is demonstrated how the design procedure was carried out. The first example demonstrates the unusual case of rock mass characterisation based upon Lugeon tests in karstic limestone and reports about the exper...
Conference Paper
Full-text available
The paper compares the Austrian “guideline for geomechanical design of underground excavations” with standardized rock mass classification systems which are commonly used in other countries. Contrary to the former practice of “design by experience” the Austrian guideline presents a comprehensible way of design and has the advantage of being more pr...
Conference Paper
Full-text available
The Mostarsko blato hydroelectric power plant is an optimised hydro-energetic solution using existing water resources with minimised structural facilities. During design special consideration is given to environmental impacts and to the improvement of the standard of living in the region. The selected solution yields an optimal energy production wi...
Conference Paper
Full-text available
Increase of population in urban areas coupled with the desire to settle and live in exposed, alpine areas are causing tensions between surface and underground constructions and geogene risks. Geoscientists and engineers making use of new methodical approaches are playing an inmportant role when dealing with natural hazards and risks influencing inf...
Conference Paper
Full-text available
The Mostarsko blato hydroelectric power plant is an optimised hydro-energetic solution using existing water resources with minimised structural facilities. During design special consideration is taken of environmental impacts and of improvement of the living standard in the region. The selected solution yields an optimal energy production with l...
Conference Paper
Full-text available
The north portal of Selzthal tunnel was built in an active landslide. The portal structure is designed as a stiff structure that should hold back the sliding movement during construction and operation. The two-dimensional finite element model verifies a selected design solution with cut-off lamellas and gives after correlation with the measured res...
Conference Paper
Full-text available
Introduction of the probabilistic safety determination based on partial safety factors defined in the European Code represents, a difficult problem for geotechnical structures. Because of the incompleteness of the subsurface investigations, the underground heterogeneity and specificity in comparison to the other construction materials, it is not po...
Article
Full-text available
The completion of the missing section of the railway line between Kumanovo and the Bulgarian border presents an important connection to the eastern neighbours for the new Republic of Macedonia. The railway route has a total length of 71 km with 31 tunnel sections. Due to the time schedule the tunnel design had to start, with few site investigations...
Article
Full-text available
The stability of any underground structure during and after excavation is the most important question for designers, because any kind of collapse may destroy large parts of a finished tunnel, causing major repairs and time loss. Preliminary calculations are therefore of great importance. A calculation is only useful, however, when the underlying nu...
Article
Full-text available
In addition to shotcrete, rockbolt anchors are the best and simplest way of protecting an excavation in the rock mass. In numerical analyses, the anchors are most often simulated using bar elements. Thus the anchor, being a steel bar, is rigidly connected to the surrounding rock material. The numerical model has been tested through a standard pull-...
Article
Full-text available
The stability of a slope during and after excavation is always of great concern in the field of rock engineering. The limiting equilibrium approach is still quite often employed in the stability analysis, despite all questionable assumptions. Finite element calculations generate better solutions for stability problems, but they are only useful when...
Article
Full-text available
Until a few years ago tunnel construction was based exclusively on experience. Numerical methods, however, constitute a very valuable supplement. Particularly the finite element method has now become a standard feature in calculation stresses and displacements in tunnels. But a calculation is only useful when the underlying numerical model correctl...
Article
Full-text available
Rockbolts are still the best known method to increase the strenght of jointed rock arround a tunnel, especially in combination with a shotcrete lining. The effect of rock bolts was simulated up to now mainly with simple bar elements, which means that only the tension effect of the bolt is considered. Based on the rock bolt element of Aydan a new mo...
Article
Full-text available
Article
Full-text available
The paper describes the practical procedure for calculation of the foundation soli and structure interaction. The procedure is based on sucessive approxiamation of deformable foundation ground by coontinous Winkler springs. The stiffness of the elastic supported foundation beams is calculated from actual contact stresses and reactive deformations....

Network

Cited By

Projects

Projects (12)
Project
Storage to stabilize water resource availability is necessary to increase water, food and energy security, reduce hazards, and adapt to climate change. Regulation of water resources using dams and reservoirs played a major role in socioeconomic development during the 20th Century, but practices of the time often led to undesired environmental and social impacts. Thousands more dams and reservo