Sevket Durucan - Academia.edu (original) (raw)
Papers by Sevket Durucan
Energy Procedia, 2011
Abstract Loss of injectivity in the near wellbore region of coalbeds during CO 2 injection is a l... more Abstract Loss of injectivity in the near wellbore region of coalbeds during CO 2 injection is a limiting factor for its exploitation as potential reservoir for geological storage of CO 2. Current research investigated the potential of thermal stimulation (thermal fracturing through cyclic freezing and thawing) of coal at the wellbore in order to achieve better injectivity during enhanced coalbed methane (CBM) recovery and CO 2 storage. Moisture saturated coal samples were subjected to freezing and thawing cycles to establish the effects of this ...
Energy Procedia, 2009
Atzbach–Schwanenstadt natural gas field located in Upper Austria Molasse Foreland basin was one o... more Atzbach–Schwanenstadt natural gas field located in Upper Austria Molasse Foreland basin was one of the four European sites selected for subsurface CO2 storage feasibility/performance evaluation in the recently completed EU-funded research project CASTOR. The objectives of the coupled reservoir-geomechanical modelling effort at Aztbach-Schwanenstadt gas field were: 1) evaluation of the hydro-mechanical response of the reservoir rock and overburden formations to
Mining Science and Technology, 1991
Yal~ln, E. and Durucan, S., 1991. Methane capacities of Zonguldak coals and the factors affecting... more Yal~ln, E. and Durucan, S., 1991. Methane capacities of Zonguldak coals and the factors affecting methane adsorption. Min.
International Journal of Coal Geology, 2014
The authors have developed the Activity Accounting Technique for predicting far field noise level... more The authors have developed the Activity Accounting Technique for predicting far field noise levels due to operation of specific set of mining machinery. The technique is based on the breaking down of the mining operations into a number of activities and establishing their duration and average location. By estimating the noise levels due to these activities, the overall noise field near a surface mine can be predicted. Experiments were undertaken at a quarry to validate the model developed based on this technique. Results of these experiments are discussed in this paper. The Activity Accounting Technique has the scope of elaborate application for prediction of environmental noise near mining sites. In a system where the activities involved and their duration can be estimated one can develop a noise quality prediction model based on near field spectrum of the sound pressure levels due to the activities. However, this method will be more useful if an acoustic database can be evolved for all the possible activities for different alternative equipment system.
The oxy-fuel combustion CO2 capture route and post-combustion CO2 capture route involve different... more The oxy-fuel combustion CO2 capture route and post-combustion CO2 capture route involve different energy consumption rates and subsequent environmental impacts. The holistic perspective offered by Life Cycle Assessment (LCA) can help decision makers to compare alternative CO2 capture and storage technologies in a life cycle perspective. This paper, at first, introduces the principles of the dynamic LCA model developed for oxy-fuel combustion and post-combustion power generation with CO2 capture, transport and injection processes. Next, a comparative life cycle assessment of alternative CO2 capture technologies is presented. Results show that, at life-cycle level, the post-combustion and oxy-fuel combustion CCS cases can reduce the life-cycle Global Warming Potential (GWP) by 78.8% and 80.0% respectively compared to conventional power plant without CCS. Other environmental impacts, such as Ecotoxicity, Human toxicity and Acidification, vary significantly with the different CO2 capture routes employed. Finally, by comparing the results obtained with the most recent LCA studies of post-combustion power generation with CO2 capture and storage, it is shown that the plant level, gate-to-gate studies provide significantly variable results and generally overestimate life cycle environmental impacts.
In this study the theoretical and effective methane recovery and CO 2 storage potential of four c... more In this study the theoretical and effective methane recovery and CO 2 storage potential of four coal seams within a well characterised section of a CBM license in Scotland are estimated, considering different horizontal well patterns, the effect of permeability heterogeneity and the composition of the injected fluid. The study concerns the Airth area of the Clackmannan coalfield in the Scottish Midland Valley. The effort on building the static earth model and the history match results of the pre-existing vertical and newly drilled horizontal wells is briefly described. Initial simulations of the horizontal well primary methane production and CO 2 /flue gas enhanced recovery enabled the length, configuration and alignment of the horizontal wells to be optimised for the long-term simulations. This configuration was then used to estimate the Effective Capacity of a selected area within the Airth field for CBM, ECBM and CO 2 storage. To evaluate the impact of permeability heterogeneity and uncertainty on reservoir performance and Effective Capacity for methane recovery and CO 2 storage, multiple realisations of possible permeability distributions across the selected area were geostatistically generated. Initially, primary production runs were performed using 100 permeability distributions with a median value of around 1 mD. A number of realisations with different median permeabilities were then selected and used for flue gas (13 % CO 2 /87 % N 2 ) and mixed gas (50 % CO 2 /50 % N 2 ) enhanced CBM recovery and CO 2 storage runs.
Energy Procedia, 2009
This paper presents a numerical simulation study of a CO2 core flooding test performed on a Tako ... more This paper presents a numerical simulation study of a CO2 core flooding test performed on a Tako sandstone sample, which measured 14.5 cm long and 3.68 cm in diameter. During the test, supercritical CO2 (at 10 MPa and 40 ∘C) was injected into one end of the horizontal core and a X-ray CT scanner (with a resolution of 0.35 mm×0.35 mm) was employed
Energy Procedia, 2009
CO2GeoNet is a Network of Excellence on the geological storage of CO2, initiated by the EC’s 6th ... more CO2GeoNet is a Network of Excellence on the geological storage of CO2, initiated by the EC’s 6th research framework programme in 2004 and integrating Europe’s key research institutes to create a scientific reference body dedicated to the development of CO2 geological storage as a viable option for mitigating climate change. It has gained international recognition through bodies such as CSLF
Transport in Porous Media, 2008
A large diameter (∼70 mm) dry coal sample was used to study the competitive displacement of CH 4 ... more A large diameter (∼70 mm) dry coal sample was used to study the competitive displacement of CH 4 by injection of supercritical CO 2 , and CO 2 -CH 4 counter-diffusion in coal matrix. During the test, a staged loading procedure, which allows the calibration of the key reservoir modelling parameters in a sequential and progressive manner, was employed. The core-flooding test was history matched using an Enhanced Coalbed Methane (ECBM) simulator, in which Fick's Law for mixed gas diffusion and the extended Langmuir equations are implemented. The system pressure rise during the two loading stages and the CO 2 breakthrough time in the final production stage were matched by using the pair of constant sorption times (9 and 3.2 days) for CH 4 and CO 2 , respectively. The corresponding diffusion coefficients for CH 4 and CO 2 were estimated to be 1.6 × 10 −12 and 4.6 × 10 −12 m 2 /s, respectively. Comparison was made with published gas diffusion coefficients for dry ground samples (ranging from <0.063 to ∼3 mm) of the same coal at relatively low pressures (<4 MPa). The CO 2 /CH 4 gas diffusion coefficient ratio was well within the reported range (2-3), whereas the CH 4 diffusion coefficient obtained from history matching of the core-flooding test is approximately 15 times smaller than that arrived by curve-fitting the measured sorption uptake rate using a unipore diffusion model. The calibrated model prediction of the effluent gas composition was in good agreement with the test data for CO 2 mole fraction of up to 20%.
Transport in Porous Media, 2000
A model for pore pressure-dependent cleat permeability is presented for gas-desorbing, linear ela... more A model for pore pressure-dependent cleat permeability is presented for gas-desorbing, linear elastic coalbeds under uniaxial strain conditions experienced in producing reservoirs. In the model, changes in the cleat permeability of coalbeds, which are idealised to have a bundled matchstick geometry, is controlled by the prevailing effective horizontal stresses normal to the cleats. Variations in the effective horizontal stresses under uniaxial strain conditions are expressed as a function of pore pressure reduction during drawdown, which includes a cleat compression term and a matrix shrinkage term that have competing effects on cleat permeability. A comprehensive analysis has revealed that the shape of the stress -pore pressure curve is predominantly determined by the magnitude of recovery pressure and rebound pressure relative to the initial reservoir pressure. A total of five possible scenarios have been identified with regard to response of the horizontal stress function to reservoir drawdown. When applied to four coalbed wells at two separate sites in the fairway of the San Juan basin, the model predictions at one site, where the three wells have shown increased absolute permeability during gas production, are in excellent agreement with the published pore pressure dependent permeability changes that were obtained independently from history matching the field production data. At a separate site the model correctly predicts, at least qualitatively, a strong permeability rebound at lower drawdown pressures that has been inferred through history matching the production data. An analysis of the effects of initial reservoir pressure on the response of effective horizontal stress to drawdown was carried out, with reference to the range of pressure likely to be encountered in the San Juan basin. The implications of this in terms of pore pressure dependent permeability are discussed.
SPE Reservoir Evaluation & Engineering, 2005
Science of The Total Environment, 2008
Concern about increasing levels of trace elements in the environment has led to the development a... more Concern about increasing levels of trace elements in the environment has led to the development and implementation of a global programme to determine the current baseline levels of these chemicals in the Earth&amp;amp;amp;amp;amp;amp;amp;#39;s surface. The FORum of European Geological Surveys (FOREGS) has recently published a geochemical database for Europe, while progress on similar databases is continuing in other major regions of the world. The FOREGS database comprises multimedia samples collected at a resolution of approximately 72x72 km from 26 European countries. This enables the investigation of the factors governing geochemical variation on a continental scale, potentially allowing contributions of natural processes to be appreciated prior to setting environmental quality standards. This paper investigates the variation in European topsoil geochemistry using factorial kriging analysis, which performs principal components analysis at different spatial scales. The results are interpreted with the aid of a GIS database. Four spatial scales were identified: a nugget component representing variation over a range less than the sampling density; a &amp;amp;amp;amp;amp;amp;amp;#39;short&amp;amp;amp;amp;amp;amp;amp;#39; scale component with a range of 296 km; an &amp;amp;amp;amp;amp;amp;amp;#39;intermediate&amp;amp;amp;amp;amp;amp;amp;#39; scale component (875 km); and a &amp;amp;amp;amp;amp;amp;amp;#39;long&amp;amp;amp;amp;amp;amp;amp;#39; scale component (1750 km). The first three principal components (PCs) of the nugget covariance matrix explained 22.2% of the overall variance, representing local variation in geology, land use, weathering and organic matter content. The first two PCs of the short range structure explained 12.6% of the variance, representing variation according to the major structural divisions of Europe, and to carbonate content. The first PC of the intermediate structure explained 7.2% of the variance and was found to relate to glacial history and Quaternary deposition. Finally, the first three PCs of the long range structure explained 29.6% of the variance and represented variation due to mineralisation, soil texture, climate and possibly anthropogenic contamination.
Oil & Gas Science and Technology, 2005
Oil & Gas Science and Technology, 2005
Journal of Hydrology, 2000
Artificial neural networks (ANNs) provide a quick and flexible means of creating models for river... more Artificial neural networks (ANNs) provide a quick and flexible means of creating models for river flow prediction, and have been shown to perform well in comparison with conventional methods. However, if the models are trained using a dataset that contains a limited range of values, they may perform poorly when encountering events containing previously unobserved values. This failure to generalise
Journal of Cleaner Production, 2006
It is common practise in mining Life Cycle Assessment (LCA) studies to use a predefined set of da... more It is common practise in mining Life Cycle Assessment (LCA) studies to use a predefined set of data to represent mining production systems. Besides this, very little is added to improve data quality, and essential mining process details which affect the ultimate environmental impacts is rarely taken into account. Some significant omissions include exploration and development work, mining method used, production, ore losses, location and the mining/processing method dependent factors that govern the nature of discharges to the environment. The mining system is often represented as a black-box, not lending itself to the interpretation of different processes used in minerals production. The generic data used are often inadequate for a mining LCA, and cannot be used as an accurate account of mining environmental burdens contributing to more complex systems ''down-stream'', such as metals, building, chemical or food industries. Therefore, the main objective of the mining LCA model presented in this paper was to develop a tool that is able to represent the mining system in a comprehensive way. To attain this objective, the mining system was studied in more detail, as it is commonly practised during mine feasibility and design stages. It (LICYMIN) was developed as part of an international research project led by Imperial College London. The model integrates the mine production, processing, waste treatment and disposal, rehabilitation and aftercare stages of a mine's life within an LCA framework. The development work was carried out in collaboration with several industrial partners in Europe, including Bakonyi Bauxitba´nya Kft. in Hungary. The model structure, database development and examples of field applications from industrial sites are presented.
International Journal of Surface Mining, Reclamation and Environment, 2000
The main objective of the diamond wire sawing tests presented in this paper was to investigate th... more The main objective of the diamond wire sawing tests presented in this paper was to investigate the diamond wire performance when sawing different granites in different orientations with respect to the rock microstructure. The work reported was carried out at the stoneyard, using stationary machines, and by sawing granite blocks free from major discontinuities. The test blocks were cut in
Energy Procedia, 2011
Abstract Loss of injectivity in the near wellbore region of coalbeds during CO 2 injection is a l... more Abstract Loss of injectivity in the near wellbore region of coalbeds during CO 2 injection is a limiting factor for its exploitation as potential reservoir for geological storage of CO 2. Current research investigated the potential of thermal stimulation (thermal fracturing through cyclic freezing and thawing) of coal at the wellbore in order to achieve better injectivity during enhanced coalbed methane (CBM) recovery and CO 2 storage. Moisture saturated coal samples were subjected to freezing and thawing cycles to establish the effects of this ...
Energy Procedia, 2009
Atzbach–Schwanenstadt natural gas field located in Upper Austria Molasse Foreland basin was one o... more Atzbach–Schwanenstadt natural gas field located in Upper Austria Molasse Foreland basin was one of the four European sites selected for subsurface CO2 storage feasibility/performance evaluation in the recently completed EU-funded research project CASTOR. The objectives of the coupled reservoir-geomechanical modelling effort at Aztbach-Schwanenstadt gas field were: 1) evaluation of the hydro-mechanical response of the reservoir rock and overburden formations to
Mining Science and Technology, 1991
Yal~ln, E. and Durucan, S., 1991. Methane capacities of Zonguldak coals and the factors affecting... more Yal~ln, E. and Durucan, S., 1991. Methane capacities of Zonguldak coals and the factors affecting methane adsorption. Min.
International Journal of Coal Geology, 2014
The authors have developed the Activity Accounting Technique for predicting far field noise level... more The authors have developed the Activity Accounting Technique for predicting far field noise levels due to operation of specific set of mining machinery. The technique is based on the breaking down of the mining operations into a number of activities and establishing their duration and average location. By estimating the noise levels due to these activities, the overall noise field near a surface mine can be predicted. Experiments were undertaken at a quarry to validate the model developed based on this technique. Results of these experiments are discussed in this paper. The Activity Accounting Technique has the scope of elaborate application for prediction of environmental noise near mining sites. In a system where the activities involved and their duration can be estimated one can develop a noise quality prediction model based on near field spectrum of the sound pressure levels due to the activities. However, this method will be more useful if an acoustic database can be evolved for all the possible activities for different alternative equipment system.
The oxy-fuel combustion CO2 capture route and post-combustion CO2 capture route involve different... more The oxy-fuel combustion CO2 capture route and post-combustion CO2 capture route involve different energy consumption rates and subsequent environmental impacts. The holistic perspective offered by Life Cycle Assessment (LCA) can help decision makers to compare alternative CO2 capture and storage technologies in a life cycle perspective. This paper, at first, introduces the principles of the dynamic LCA model developed for oxy-fuel combustion and post-combustion power generation with CO2 capture, transport and injection processes. Next, a comparative life cycle assessment of alternative CO2 capture technologies is presented. Results show that, at life-cycle level, the post-combustion and oxy-fuel combustion CCS cases can reduce the life-cycle Global Warming Potential (GWP) by 78.8% and 80.0% respectively compared to conventional power plant without CCS. Other environmental impacts, such as Ecotoxicity, Human toxicity and Acidification, vary significantly with the different CO2 capture routes employed. Finally, by comparing the results obtained with the most recent LCA studies of post-combustion power generation with CO2 capture and storage, it is shown that the plant level, gate-to-gate studies provide significantly variable results and generally overestimate life cycle environmental impacts.
In this study the theoretical and effective methane recovery and CO 2 storage potential of four c... more In this study the theoretical and effective methane recovery and CO 2 storage potential of four coal seams within a well characterised section of a CBM license in Scotland are estimated, considering different horizontal well patterns, the effect of permeability heterogeneity and the composition of the injected fluid. The study concerns the Airth area of the Clackmannan coalfield in the Scottish Midland Valley. The effort on building the static earth model and the history match results of the pre-existing vertical and newly drilled horizontal wells is briefly described. Initial simulations of the horizontal well primary methane production and CO 2 /flue gas enhanced recovery enabled the length, configuration and alignment of the horizontal wells to be optimised for the long-term simulations. This configuration was then used to estimate the Effective Capacity of a selected area within the Airth field for CBM, ECBM and CO 2 storage. To evaluate the impact of permeability heterogeneity and uncertainty on reservoir performance and Effective Capacity for methane recovery and CO 2 storage, multiple realisations of possible permeability distributions across the selected area were geostatistically generated. Initially, primary production runs were performed using 100 permeability distributions with a median value of around 1 mD. A number of realisations with different median permeabilities were then selected and used for flue gas (13 % CO 2 /87 % N 2 ) and mixed gas (50 % CO 2 /50 % N 2 ) enhanced CBM recovery and CO 2 storage runs.
Energy Procedia, 2009
This paper presents a numerical simulation study of a CO2 core flooding test performed on a Tako ... more This paper presents a numerical simulation study of a CO2 core flooding test performed on a Tako sandstone sample, which measured 14.5 cm long and 3.68 cm in diameter. During the test, supercritical CO2 (at 10 MPa and 40 ∘C) was injected into one end of the horizontal core and a X-ray CT scanner (with a resolution of 0.35 mm×0.35 mm) was employed
Energy Procedia, 2009
CO2GeoNet is a Network of Excellence on the geological storage of CO2, initiated by the EC’s 6th ... more CO2GeoNet is a Network of Excellence on the geological storage of CO2, initiated by the EC’s 6th research framework programme in 2004 and integrating Europe’s key research institutes to create a scientific reference body dedicated to the development of CO2 geological storage as a viable option for mitigating climate change. It has gained international recognition through bodies such as CSLF
Transport in Porous Media, 2008
A large diameter (∼70 mm) dry coal sample was used to study the competitive displacement of CH 4 ... more A large diameter (∼70 mm) dry coal sample was used to study the competitive displacement of CH 4 by injection of supercritical CO 2 , and CO 2 -CH 4 counter-diffusion in coal matrix. During the test, a staged loading procedure, which allows the calibration of the key reservoir modelling parameters in a sequential and progressive manner, was employed. The core-flooding test was history matched using an Enhanced Coalbed Methane (ECBM) simulator, in which Fick's Law for mixed gas diffusion and the extended Langmuir equations are implemented. The system pressure rise during the two loading stages and the CO 2 breakthrough time in the final production stage were matched by using the pair of constant sorption times (9 and 3.2 days) for CH 4 and CO 2 , respectively. The corresponding diffusion coefficients for CH 4 and CO 2 were estimated to be 1.6 × 10 −12 and 4.6 × 10 −12 m 2 /s, respectively. Comparison was made with published gas diffusion coefficients for dry ground samples (ranging from <0.063 to ∼3 mm) of the same coal at relatively low pressures (<4 MPa). The CO 2 /CH 4 gas diffusion coefficient ratio was well within the reported range (2-3), whereas the CH 4 diffusion coefficient obtained from history matching of the core-flooding test is approximately 15 times smaller than that arrived by curve-fitting the measured sorption uptake rate using a unipore diffusion model. The calibrated model prediction of the effluent gas composition was in good agreement with the test data for CO 2 mole fraction of up to 20%.
Transport in Porous Media, 2000
A model for pore pressure-dependent cleat permeability is presented for gas-desorbing, linear ela... more A model for pore pressure-dependent cleat permeability is presented for gas-desorbing, linear elastic coalbeds under uniaxial strain conditions experienced in producing reservoirs. In the model, changes in the cleat permeability of coalbeds, which are idealised to have a bundled matchstick geometry, is controlled by the prevailing effective horizontal stresses normal to the cleats. Variations in the effective horizontal stresses under uniaxial strain conditions are expressed as a function of pore pressure reduction during drawdown, which includes a cleat compression term and a matrix shrinkage term that have competing effects on cleat permeability. A comprehensive analysis has revealed that the shape of the stress -pore pressure curve is predominantly determined by the magnitude of recovery pressure and rebound pressure relative to the initial reservoir pressure. A total of five possible scenarios have been identified with regard to response of the horizontal stress function to reservoir drawdown. When applied to four coalbed wells at two separate sites in the fairway of the San Juan basin, the model predictions at one site, where the three wells have shown increased absolute permeability during gas production, are in excellent agreement with the published pore pressure dependent permeability changes that were obtained independently from history matching the field production data. At a separate site the model correctly predicts, at least qualitatively, a strong permeability rebound at lower drawdown pressures that has been inferred through history matching the production data. An analysis of the effects of initial reservoir pressure on the response of effective horizontal stress to drawdown was carried out, with reference to the range of pressure likely to be encountered in the San Juan basin. The implications of this in terms of pore pressure dependent permeability are discussed.
SPE Reservoir Evaluation & Engineering, 2005
Science of The Total Environment, 2008
Concern about increasing levels of trace elements in the environment has led to the development a... more Concern about increasing levels of trace elements in the environment has led to the development and implementation of a global programme to determine the current baseline levels of these chemicals in the Earth&amp;amp;amp;amp;amp;amp;amp;#39;s surface. The FORum of European Geological Surveys (FOREGS) has recently published a geochemical database for Europe, while progress on similar databases is continuing in other major regions of the world. The FOREGS database comprises multimedia samples collected at a resolution of approximately 72x72 km from 26 European countries. This enables the investigation of the factors governing geochemical variation on a continental scale, potentially allowing contributions of natural processes to be appreciated prior to setting environmental quality standards. This paper investigates the variation in European topsoil geochemistry using factorial kriging analysis, which performs principal components analysis at different spatial scales. The results are interpreted with the aid of a GIS database. Four spatial scales were identified: a nugget component representing variation over a range less than the sampling density; a &amp;amp;amp;amp;amp;amp;amp;#39;short&amp;amp;amp;amp;amp;amp;amp;#39; scale component with a range of 296 km; an &amp;amp;amp;amp;amp;amp;amp;#39;intermediate&amp;amp;amp;amp;amp;amp;amp;#39; scale component (875 km); and a &amp;amp;amp;amp;amp;amp;amp;#39;long&amp;amp;amp;amp;amp;amp;amp;#39; scale component (1750 km). The first three principal components (PCs) of the nugget covariance matrix explained 22.2% of the overall variance, representing local variation in geology, land use, weathering and organic matter content. The first two PCs of the short range structure explained 12.6% of the variance, representing variation according to the major structural divisions of Europe, and to carbonate content. The first PC of the intermediate structure explained 7.2% of the variance and was found to relate to glacial history and Quaternary deposition. Finally, the first three PCs of the long range structure explained 29.6% of the variance and represented variation due to mineralisation, soil texture, climate and possibly anthropogenic contamination.
Oil & Gas Science and Technology, 2005
Oil & Gas Science and Technology, 2005
Journal of Hydrology, 2000
Artificial neural networks (ANNs) provide a quick and flexible means of creating models for river... more Artificial neural networks (ANNs) provide a quick and flexible means of creating models for river flow prediction, and have been shown to perform well in comparison with conventional methods. However, if the models are trained using a dataset that contains a limited range of values, they may perform poorly when encountering events containing previously unobserved values. This failure to generalise
Journal of Cleaner Production, 2006
It is common practise in mining Life Cycle Assessment (LCA) studies to use a predefined set of da... more It is common practise in mining Life Cycle Assessment (LCA) studies to use a predefined set of data to represent mining production systems. Besides this, very little is added to improve data quality, and essential mining process details which affect the ultimate environmental impacts is rarely taken into account. Some significant omissions include exploration and development work, mining method used, production, ore losses, location and the mining/processing method dependent factors that govern the nature of discharges to the environment. The mining system is often represented as a black-box, not lending itself to the interpretation of different processes used in minerals production. The generic data used are often inadequate for a mining LCA, and cannot be used as an accurate account of mining environmental burdens contributing to more complex systems ''down-stream'', such as metals, building, chemical or food industries. Therefore, the main objective of the mining LCA model presented in this paper was to develop a tool that is able to represent the mining system in a comprehensive way. To attain this objective, the mining system was studied in more detail, as it is commonly practised during mine feasibility and design stages. It (LICYMIN) was developed as part of an international research project led by Imperial College London. The model integrates the mine production, processing, waste treatment and disposal, rehabilitation and aftercare stages of a mine's life within an LCA framework. The development work was carried out in collaboration with several industrial partners in Europe, including Bakonyi Bauxitba´nya Kft. in Hungary. The model structure, database development and examples of field applications from industrial sites are presented.
International Journal of Surface Mining, Reclamation and Environment, 2000
The main objective of the diamond wire sawing tests presented in this paper was to investigate th... more The main objective of the diamond wire sawing tests presented in this paper was to investigate the diamond wire performance when sawing different granites in different orientations with respect to the rock microstructure. The work reported was carried out at the stoneyard, using stationary machines, and by sawing granite blocks free from major discontinuities. The test blocks were cut in