Academic literature on the topic 'Fractured rock massif'

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Journal articles on the topic "Fractured rock massif"

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Rozov, Konstantin, Vyacheslav Rumynin, Anton Nikulenkov, and Polina Leskova. "Sorption of 137Cs, 90Sr, Se, 99Tc, 152(154)Eu, 239(240)Pu on fractured rocks of the Yeniseysky site (Nizhne-Kansky massif, Russia)." E3S Web of Conferences 98 (2019): 10007. http://dx.doi.org/10.1051/e3sconf/20199810007.

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The study demonstrates the effect of sorption properties of fractured host rocks from the Yeniseysky site (Nizhne-Kansky rock massif, Krasnoyarsk region) on the migration of dissolved radioactive components (137Cs, 90Sr, 79Se, 99Tc, 152(154)Eu, 239(240)Pu) in the deep geological conditions of a high-level radioactive waste repository. Estimates of radionuclide distribution coefficients between the aqueous solution and fractured rocks obtained from sorption experiments. The influence of various petrographic types and fracture-filling substances on the retardation of radioactive components has b
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Malkovsky, Victor I., Vladislav A. Petrov, Sergey V. Yudintsev, Michael I. Ojovan, and Valeri V. Poluektov. "Influence of Rock Structure on Migration of Radioactive Colloids from an Underground Repository of High-Level Radioactive Waste." Sustainability 15, no. 1 (2023): 882. http://dx.doi.org/10.3390/su15010882.

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Studies of leaching of vitrified simulated high-level radioactive waste (HLW) evidence that most of actinides or their simulators enter leaching water in a colloidal form. In this paper, we consider a mechanism of colloid-facilitated migration of radionuclides from an underground repository of HLW located at a depth of a few hundreds of meters in fractured crystalline rocks. The comparison between data of field and laboratory measurements showed that the bulk permeability of the rock massif in field tests is much greater than the permeability of rock samples in laboratory experiments due to an
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Gabov, Viktor V., Denis A. Zadkov, Andrey Yu Kuzkin, and Aleksandr S. Elikhin. "Fractured-Laminar Structure of Formations and Methods of Coal Loosening." Key Engineering Materials 836 (March 2020): 90–96. http://dx.doi.org/10.4028/www.scientific.net/kem.836.90.

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The paper analyzes the structure of coal beds. It is noted that coal beds belong to laminar massifs with characteristic oriented structure and pronounced anisotropy of strength properties, and include rock layers and consolidated hard inclusions. The quality criteria of the coal loosening process are highlighted. A selective method of separating coal from a massif by cutting along weakened surfaces is proposed as an alternative to the existing combine technology with continuous cutting of a massif from the surface.
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Bezruchko, K. A., H. I. Larionov, O. V. Prykhodchenko, and M. O. Hladka. "Methodology for determining relative linear deformations in a rock massif of the sedimentary strata." Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, no. 6 (December 30, 2024): 13–20. https://doi.org/10.33271/nvngu/2024-6/013.

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Purpose. To develop a method for predicting fractured zones in a massif of sedimentary rocks formed due to the folding, by determining relative linear deformations that exceed those critical ones for discontinuity of rock massif. Methodology. The task of identifying fractured zones is to determine areas in the rock massif where tensile deformations, under the action of tectonic processes, have exceeded the critical limit. The determination requires the map construction of the researched area with the help of trend analysis and a series of mathematical calculations, namely, finding the distance
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Vergelska, N. V., L. І. Pуmonenko, and I. M. Skopychenko. "MINING AND GEOLOGICAL FEATURES OF FORECASTING DYNAMIC PHENOMENA IN COAL MINES." Mining Geology & Geoecology, no. 1(4) (June 8, 2022): 5–15. http://dx.doi.org/10.59911/mgg.2786-7994.2022.1(4).273777.

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The issues of forecasting and preventing dynamic phenomena in coal mines, despite decades of research, remain insufficiently studied. The nature of dynamic phenomena is far from being known, and as the depth of mining of coal seams increases, the phenomena become more and more formidable and, as a rule, unpredictable.Most of the dynamic phenomena are related to the stress state of the massif and the peculiarity of its gas saturation, which is partly explained by the state of sedimentary rocks. In sedimentary rocks or crystalline fractured, the number of parameters characterizing the stress sta
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Pilipenko, Yurii, Serhii Kurnosov, Serhii Makeiev, Iryna Konstantynova, and Mariusz Ptak. "The method of geosystem state control for making risk-oriented technical decisions to increase the mine workings stability." IOP Conference Series: Earth and Environmental Science 1491, no. 1 (2025): 012020. https://doi.org/10.1088/1755-1315/1491/1/012020.

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Abstract In this article, a problem of determining rock fracturing in layered anisotropic massifs is considered. Electrokinetic and transient processes occurred at roof destruction in structurally disturbed rocks in a zone of discontinuous dislocations were studied by the method of induced polarization. A novelty of this work is that anisotropy of rocks is used as a diagnostic parameter for studying the massif fracturing. The idea of the work was to study an electrisation of the fractured rocks in an electric field and to use the transient characteristics of the induced polarization effect as
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Kazakov, Aziz, Bobur Bobarakhimov, Muzaffar Haqberdiyev, Shuhrat Muhitdinov, and Hasan Qurbonov. "Rating assessment of rocks and ores in the conditions of the Kyzyl-alma deposit of Angren mine department." E3S Web of Conferences 462 (2023): 03028. http://dx.doi.org/10.1051/e3sconf/202346203028.

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A comparative analysis of assessing the stability of rock masses was carried out based on rating indicators that are used at foreign underground mining enterprises. An assessment of the state of the rock mass at the Razvedochnaya and Kyzyl Alma mines of the Angren mine was carried out. The method for determining the category of disturbance of an ore and rock massif is effective, gives a quick assessment of the state of the massif - the international Barton rating system is recommended to be used in problem areas (unstable, stressed, weakened, fractured, disturbed (tectonic faults), watered mas
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Ait-Ssi, Lahcen, Jean-Pierre Villeneuve, and Alain Rouleau. "Utilisation d'un modèle stochastique de réseaux de fractures pour étudier les propriétés hydrauliques d'un massif fissuré." Canadian Geotechnical Journal 26, no. 2 (1989): 313–23. http://dx.doi.org/10.1139/t89-040.

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This study of the hydraulic properties of a fractured rock mass is based on data from field injection tests and fracture measurements, and on simulations of the fracture system in the bedrock upstream from the Daniel Johnson dam at Manic 5. Analysis of water injection tests indicates that the bedrock can be divided into two zones with respect to the permeability. The more permeable zone, which is the object of this study, shows a log-normal distribution of the hydraulic conductivities.Using several stochastic simulations of fracture networks, the fracture aperture has been adjusted gradually t
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Rodionova, Anastasiya A., Vladimir G. Petrov, Irina E. Vlasova, et al. "Sorption and Spatial Distribution of 137Cs, 90Sr and 241Am on Mineral Phases of Fractured Rocks of Nizhnekansky Granitoid Massif." Energies 15, no. 19 (2022): 7440. http://dx.doi.org/10.3390/en15197440.

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The sorption behavior and spatial microdistribution of Cs-137, Sr-90 and Am-241 onto the surface of a fractured rock sample from the R-11 borehole of the exocontact zone of the Nizhnekansky granitoid massif were studied. The sorption efficiency of the fractured sample increases in the row of Sr < Cs < Am, where americium is the most retained radionuclide. Based on the image processing of radiograms and scanning electron microscopy data, the mineral relative sorption efficiency (RSE) values were determined to quantify the contribution of the mineral phases of the fractured sample to radio
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Colegial-Gutiérrez, Juan Diego, María Camila Forero-Quintero, María Alejandra Fuentes-Rueda, and Sully Gomez Isidro. "Characterization of weathering profiles of the crystal rocks of eastern Bucaramanga and definition of hydrogeological properties." Boletín de Ciencias de la Tierra, no. 41 (January 1, 2017): 16–30. http://dx.doi.org/10.15446/rbct.n41.59347.

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In the process of improving the knowledge of the hydrogeological potential of weathered zones in crystalline rocks and compounds that can behave as aquifers, this article is performed whose area of study is located east of the metropolitan area of Bucaramanga, Santander Massif consists of two main lithological units; the Neis of Bucaramanga and Santander Group plutonic (diorite, granodiorite-tonalite gray quartz monzonite and monzogranite). These rocks have undergone brittle deformation, physico-chemical weathering mainly influenced by the tropical atmosphere of the area also are jointed and f
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Dissertations / Theses on the topic "Fractured rock massif"

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El, Khattabi Mohamed. "Etude et gestion des risques liés aux glissements de terrain en milieu urbain : application à la ville d'Al Hoceima (Nord du Maroc)." Electronic Thesis or Diss., Université de Lille (2022-....), 2023. http://www.theses.fr/2023ULILN047.

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Les glissements de terrain représentent des phénomènes extrêmement dangereux, influencés par divers paramètres et critères fréquemment observés dans différents endroits dans le monde. Leur gestion se révèle complexe, d'autant plus s'ils sont localisés en milieu urbain, en raison des risques qu'ils présentent pour la population et les habitations, ainsi que de la difficulté des mesures correctives à mettre en place. Cette thèse se concentre sur l'étude des glissements de terrain appliquée à la ville d'Al Hoceima, au nord du Maroc. L'objectif est d'analyser leurs origines ou leur réactivation, l
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SAVELY, JAMES PALMER. "PROBABILISTIC ANALYSIS OF FRACTURED ROCK MASSES." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184249.

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Stability analysis of rock masses composed of small, discrete rock blocks that are in-place and interlocked should consider four components of failure: (1) Sliding between blocks. (2) Shearing through rock blocks. (3) Rolling blocks in a shear zone. (4) Crushing of rock blocks. Statistical rock mass description is used to define the characteristics of the rock blocks and the block assemblage. Clastic mechanics is one method of predicting stresses produced by the arrangement of rock blocks and the loading conditions. Failure begins at a point of maximum stress behind the slope. Progression of t
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Min, Ki-Bok. "Fractured Rock Masses as Equivalent Continua - A Numerical Study." Doctoral thesis, KTH, Land and Water Resources Engineering, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3742.

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<p>In this thesis, fractured rock masses are treated asequivalent continua for large-scale analyses of rockengineering projects. Systematic developments are made for thedetermination of equivalent mechanical and hydraulic propertiesof fractured rock masses using a hybrid discrete fracturenetwork - distinct element method (DFN-DEM) approach. Thedetermined equivalent properties are then used for a far-fieldfinite element analysis of the thermo-mechanical impacts on thestress, deformation and permeability of fractured rockssurrounding a hypothetical geological repository of nuclearwaste. The geol
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ALVARENGA, JULIO ERNESTO MACIAS. "COMPUTATIONAL ANALYSIS OF THE STABILITY OF FRACTURED ROCK MASSES." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1997. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=1929@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>O presente trabalho apresenta aplicações das técnicas de Relaxação Dinâmica e Análise Limite ao estudo da estabilidade de maciços rochosos fraturados. O maciço é modelado como um meio descontínuo formado por blocos rígidos com deformação concentrada nas juntas. A técnica de Relaxação Dinâmica é usada para a solução do problema de equilíbrio resultante, através do programa BLOCO. As expressões desenvolvidas para a matriz de rigidez tangente, usando o modelo de Barton & Bandis, foram implementadas no programa BLOCO. Exemplos
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Priscu, Doina Maria. "Double-porosity modelling of groundwater flow through fractured rock masses." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ37280.pdf.

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Abdallah, Ghassan. "La convection thermique dans les milieux fracturés : modélisation avec la méthode des éléments distincts." Vandoeuvre-les-Nancy, INPL, 1994. http://www.theses.fr/1994INPL126N.

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L’étude des phénomènes couplés thermo-hydro-mécaniques intéresse la communauté scientifique aujourd'hui confronté au problème du stockage des déchets. La modélisation est un outil essentiel pour prédire l'évolution complexe du milieu hôte et de ces déchets. Parmi les approches numériques existants, on distingue les approches de types éléments finis et les approches de type éléments distincts. Si la première, plus ancienne, a déjà donné lieu à de nombreux développement et applications, elle rend mal quelquefois la réalité du massif rocheux fracturé. Nous avons souhaité cette dernière approche e
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Baghbanan, Alireza. "Scale and Stress Effects on Hydro-Mechanical Properties of Fractured Rock Masses." Doctoral thesis, KTH, Teknisk geologi och geofysik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4772.

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In this thesis, the effects of size and stress on permeability, deformability and strength of fractured rock masses are investigated. A comparison study was carried out to examine the effects of considering, or not considering, the correlation between distributions of fracture apertures and fracture trace lengths on the hydro-mechanical behavior of fractured rocks. The basic concepts used are the fundamental principles of the general theory of elasticity, Representative Elementary Volume (REV), the tensor of equivalent permeability, and the strength criteria of the fractured rocks. Due to the
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Saetta, Valeria. "Micro-seismicity and hydro-mechanics of fractured rock masses : experiments and numerical simulations." Vandoeuvre-les-Nancy, INPL, 2004. http://www.theses.fr/2004INPL039N.

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Un massif rocheux fracturé, dont le comportement géo-hydromécanique a été étudié depuis plusieurs années, a été instrumenté sismiquement. L'intérêt du site réside dans le fait qu'on peut induire artificiellement une charge hydraulique connue et mesurer des déplacements, des pressions hydrauliques sur plusieurs points significatifs. Les résultats des essais in-situ mettent en évidence l'existence d'une micro-sismicité induite par une variation de pression avec une grande repétitivité. A partir des résultats des essais in-situ, a été formulée l'hypothèse que l'activité micro-sismique est associé
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Styles, Thomas Daniel. "Numerical modelling and analysis of slope stability within fracture dominated rock masses." Thesis, University of Exeter, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.496103.

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Numerical modelling of rock slopes can involve a number and variety of techniques, the selection and requirement of which depends on the factors deemed to control the potential for Instability. This thesis presents a number of case studies involving slopes in fractured rock, encompassing a range of scales. The case study slopes have provided a means to question the way in which particular slope instabilities should be analysed. Currently there are few methods available for analysing the complex behaviour within slopes of fractured rock. A review of available techniques is given within this the
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Mehrapour, Mohammad Hadi, and Mohammad Hadi Mehrapour. "Development of a Failure Criterion for Rock Masses Having Non-Orthogonal Fracture Systems." Diss., The University of Arizona, 2017. http://hdl.handle.net/10150/625679.

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Two new three-dimensional rock mass strength criteria are developed in this dissertation by extending an existing rock mass strength criterion. These criteria incorporate the effects of the intermediate principal stress, minimum principal stress and the anisotropy resulting from these stresses acting on the fracture system. In addition, these criteria have the capability of capturing the anisotropic and scale dependent behavior of the jointed rock mass strength by incorporating the effect of fracture geometry through the fracture tensor components. Another significant feature of the new rock m
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Books on the topic "Fractured rock massif"

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Bouteca, Maurice. Fracturation hydroulique: Calcul de propagation d'une fracture induite dans un massif rocheux. Éditions Technip, 1987.

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Bles, J. L. Fracturation profonde des massifs rocheux granitiques. Editions du Bureau de recherches géologiques et minières, Service géologique national, 1986.

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Loiseau, Philippe. Etude structurale et géostatistique des gneiss de la région du Cézallier, Massif central français: Modélisation tridimensionnelle de réseaux de fractures : application à l'écoulement des fluides. Editions du BRGM, 1988.

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Book chapters on the topic "Fractured rock massif"

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Zhao, Yu, Kun Zheng, and Chaolin Wang. "Mixed-Mode I/II Fracture." In Rock Fracture Mechanics and Fracture Criteria. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-5822-7_4.

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AbstractAs the inherent nature of rocks, natural cracks play a remarkable part in controlling the mechanics and permeability responses in rock masses. Due to the intense stress concentration at their neighborhoods, these cracks are extensively recognized as the initial locations for the initiation, extension, and convergence of cracking.
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Mackie, Bruce E. "Interconnectivity Study of a Fractured Rock Aquifer." In Remediation in Rock Masses. American Society of Civil Engineers, 2000. http://dx.doi.org/10.1061/9780784400159.ch05.

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Bai, M., H. I. Inyang, C. C. Chien, and C. Bruell. "Factors for Assessing Flow and Transport in Fractured Porous Media." In Remediation in Rock Masses. American Society of Civil Engineers, 2000. http://dx.doi.org/10.1061/9780784400159.ch02.

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Chen, Jun, Ning Liu, Chaoyi Wang, and Yaohui Gao. "Research on the Fracture Evolution Characteristics and Mesoscopic Fracture Mechanism of Fissured Basalt Based on PFC2D." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4090-1_19.

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AbstractThe surrounding rock of large underground engineering projects is often composed of hard rock, and defects such as mineral particles and micro-cracks in the hard rock, significantly affect the mechanical properties of the rock. To investigate the influence of micro-crack distribution on the mechanical behavior, damage evolution, and fracture mechanism of rock, a numerical simulation model of basalt with single crack was established using the particle flow code PFC2D, based on the widely distributed cryptocrystalline basalt in the Baihetan Hydropower Station. In this study, the laws of
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Reitsma, Stanley, and Bernard H. Kueper. "Alcohol Flooding to Remediate Rock Fractures Containing a DNAPL." In Remediation in Rock Masses. American Society of Civil Engineers, 2000. http://dx.doi.org/10.1061/9780784400159.ch16.

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Li, Chunhong, and John L. Wilson. "Heuristic Theory on Diffusive Mixing Behavior at Fracture Junctions." In Remediation in Rock Masses. American Society of Civil Engineers, 2000. http://dx.doi.org/10.1061/9780784400159.ch03.

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Bai, M., Y. Abousleiman, H. I. Inyang, H. Mo, and J. C. Roegiers. "Analysis of Capture Zone and Pump-and-Treat Method in Fractured Rocks." In Remediation in Rock Masses. American Society of Civil Engineers, 2000. http://dx.doi.org/10.1061/9780784400159.ch04.

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Mackiewicz, Scott M., Bruce H. Kjartanson, and John M. Pitt. "Gasoline Transport and Air Venting Removal in a Fractured Clayey Till: A Laboratory Study." In Remediation in Rock Masses. American Society of Civil Engineers, 2000. http://dx.doi.org/10.1061/9780784400159.ch10.

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Paillet, Fredrick L. "Using Borehole Wireline Methods to Delineate Fracture Flow Paths in Bedrock Formations." In Remediation in Rock Masses. American Society of Civil Engineers, 2000. http://dx.doi.org/10.1061/9780784400159.ch07.

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Middleman, Bruce, and Rob Earle. "Development of a Conceptual Groundwater Recovery System in a Fractured Bedrock Aquifer: A Case Study from the Wissahickon Formation." In Remediation in Rock Masses. American Society of Civil Engineers, 2000. http://dx.doi.org/10.1061/9780784400159.ch06.

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Conference papers on the topic "Fractured rock massif"

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Gupalo, T. A., V. P. Beygul, and V. Yu Konovalov. "Comparative Quantitative Estimation of Engineered and Natural Barriers Influence on Ecological Safety of Long-Lived Radwaste Underground Disposal." In ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation. ASMEDC, 2003. http://dx.doi.org/10.1115/icem2003-4533.

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The paper presents quantitative estimations of the effect of containers, matrix materials, bentonite barrier and hard rock massif on ecological safety during geologic isolation of longlived RW. The estimations were obtained on the basis of mathematical modelling of radionuclides (Np-237, Tc-99, Pu-239, Zr-93) migration in bentonite barrier, forecasting contaminated underground water migration in fractured zones, experimental data on leaching rates of radionuclides immobilized in boron silicate glasses and mineral-like ceramics. Preliminary data obtained at one of the sites of the Nizhnekansky
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Bulegenov, Kanat, Sayat Rais, and Daulet Muratkhanov. "GEOLOGY OF PERMIAN GRANITES OF THE KARATAU-NARYN ZONE AND THEIR PROSPECTIVE FOR RARE METALS (SOUTH KAZAKHSTAN)." In 23rd SGEM International Multidisciplinary Scientific GeoConference 2023. STEF92 Technology, 2023. http://dx.doi.org/10.5593/sgem2023/1.1/s01.07.

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The studied intrusive massif is an ellipse elongated in the sublatitudinal direction. Only the eastern part, 2.2x4 km in size, is exposed on the earth surface. Under the sediments, the intrusion was traced by boreholes and aeromagnetic survey. The intrusion is a sheetlike body of a fractured nature, inclined to the southwest. A zone of marmorized limestones, as well as tremolite and wolastonite hornfelses, formed at the contact with the intrusion. Among the intrusive rocks that make up the massif, three successive igneous phases are distinguished. The first phase is represented by pyroxenites,
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Tang, J. Z., G. M. Zhao, J. C. Chang, Z. Q. Yin, M. K. Duan, and T. Wang. "Mechanical Responses and Dynamic Seepage Evolution Laws of Rock Mass Containing Inclined Rough Fracture Under Three-Dimensional Stress." In 58th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2024. http://dx.doi.org/10.56952/arma-2024-0762.

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ABSTRACT: The stress-seepage tests are conducted on sandstone samples that containing inclined rough fracture under three-dimensional stress conditions. The surface scanners are utilized to scan and analyze the morphology of the fractures before and after the tests, studying the relationship between morphology and mechanical and seepage characteristics. The research results demonstrate that: (i) Confining pressure has a significantly strengthening effect on the peak stress and crack damage threshold, while pore pressure has the opposite effect; (ii) As the confining pressure increases, the JRC
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Wang, S. F., Z. X. Zhang, X. Huang, and Q. H. Lei. "Numerical Simulation of Elastic Wavefield Evolution in Heterogeneous Fractured Media Based on a Combined Displacement Discontinuity-Discrete Fracture Network Model." In 58th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2024. http://dx.doi.org/10.56952/arma-2024-0399.

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ABSTRACT: The evolution of elastic waves in heterogenous fractured rocks is studied based on numerical simulations. We use the discrete fracture network method to represent the distribution of a natural fracture system and employ the displacement discontinuity method to compute the propagation of elastic waves across individual fractures. The variability of matrix Young's modulus is assumed to obey the Weibull distribution, which is characterized by a homogeneity index m. The rock matrix becomes more heterogeneous as m decreases. The results indicate that the dimensionless angular frequency ῶ
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Li, W., B. KC, M. Meng, L. P. Frash, C. W. Neil, and P. H. Stauffer. "Laboratory Replication of Gas Mixture Transport in Fractured Porous Tuff Following a Subsurface Explosion." In 58th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2024. http://dx.doi.org/10.56952/arma-2024-0849.

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ABSTRACT: Detection of underground nuclear explosions (UNEs) require a sophisticated understanding of gas transport through fractured geological media. This is because surface detection of some signature gaseous radionuclides, such as xenon, is a strong indicator of a subsurface nuclear event. The complicated physics involved in gas transport in explosively generated cavities results in remaining questions about the accuracy of predictions of gaseous radionuclides transport through fractured geological media. For example, there is a limited understanding of breakthrough time of each gaseous sp
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McLean, M. L., D. N. Espinoza, and B. Ahmmed. "Evolution of Hydraulic Fracture Permeability in EGS Considering Natural Fracture Compressibility and Strength of the Surrounding Rock." In 58th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2024. http://dx.doi.org/10.56952/arma-2024-0853.

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ABSTRACT: The long-term success of an Enhanced Geothermal System (EGS) project requires distributed fluid flow in created fractures, ideally each with uniform and moderate permeability to avoid early thermal breakthrough. Yet, thermal depletion causes fracture opening, increasing the likelihood of flow channeling in areas with high fracture permeability. Furthermore, the effective reservoir rock stiffness (including natural fracture compliance) has a first-order impact on thermally induced stress changes, and thus fracture permeability. The objective of this work is to explore the role of ther
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Yu, Jiayi, Jiehao Wang, Yan Li, et al. "Permeability-Friction Relationships for Propped Fractures in Shale." In 56th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2022. http://dx.doi.org/10.56952/arma-2022-2242.

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ABSTRACT: We investigate controls on fluid transfer into massive hydraulic fractures due to reactivation of, and proppant penetration into, oblique fractures transecting the main fracture face during long-term reservoir depletion through tightly constrained laboratory experiments. Permeability evolution of fracture-contained proppant permeability/conductivity is highly sensitive to both normal stress and proppant loading concentration and less sensitive to shear displacement rate. By experimentally examining the shale and steel fractures – as an analog to end-member manifestations of soft/weak
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Choi, J., J. Kim, and J. J. Song. "Investigation on the Spatial Variation in Fracture Orientation and its Impact on Hydraulic Behavior of Rock Mass." In 58th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2024. http://dx.doi.org/10.56952/arma-2024-0661.

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ABSTRACT: The consideration of spatial variation in fracture distribution within a rock mass is crucial for enhancing the reliability of Discrete Fracture Network (DFN) modeling because, in nature, fracture properties exhibit non-uniformly distributed characteristics. Few studies have explored the degree of spatial variation within rock masses and its relationship with hydraulic performance. This study investigates the spatial variation of fracture orientation using outcrop data collected from various regions. Twenty-one trace maps were divided into several sub-domains, and the spatial variati
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Yang, H., H. F. Duan, Q. Zhao, and J. B. Zhu. "Dynamic Stress Wave Behaviors Across Single Fluid-Filled Rock Fractures." In 58th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2024. http://dx.doi.org/10.56952/arma-2024-0783.

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ABSTRACT: Dynamic stress waves are commonly encountered in geoengineering operations (e.g., rock blasting and hydraulic fracturing) and natural events (e.g., earthquake ruptures and volcanic eruptions), strongly influencing the deformation and failure of rock masses and rock infrastructures. Understanding dynamic stress wave behavior across rock fractures is essential for mining, tunneling, geothermal energy extraction, and hydrocarbon exploitation. The present study conducted considerable dynamic impact tests on synthetic fluid-filled rock fractures under different saturation conditions throu
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Yu, Jiayi, Jiehao Wang, Yan Li, et al. "The Role of Shear Deformation on Shale Fracture Reactivation and Conductivity Evolution." In 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0830.

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ABSTRACT In this study, we conduct laboratory experiments reproducing fracture slip on both propped and unpropped fractures in Marcellus shale to explore the role of shear deformation as a primary control on permeability evolution and its correlation with initial stress state, shear stress magnitude and loading rate, and proppant loading concentration. For tests on unpropped fractures, we incorporate the complexity in both form and response of natural fracture topography by using pristine natural fractures directly split along bedding planes. Under low shear stress, unpropped fracture is prohi
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Reports on the topic "Fractured rock massif"

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Peter, J. M., and M. G. Gadd. Introduction to the volcanic- and sediment-hosted base-metal ore systems synthesis volume, with a summary of findings. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/328015.

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This volume presents results of research conducted during phase 5 of the Volcanic- and Sedimentary-hosted Base Metals Ore Systems project of the Geological Survey of Canada's Targeted Geoscience Initiative (TGI) program. The papers in this volume include syntheses and primary scientific reports. We present here a synopsis of the findings during this TGI project. Research activities have addressed several mineral deposit types hosted in sedimentary rocks: polymetallic hyper-enriched black shale, sedimentary exhalative Pb-Zn, carbonate-hosted Pb-Zn (Mississippi Valley-type; MVT), and fracture-co
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Fatehi Marji, Mohammad, Arash Pashapour, and Mohsen Masihi. Effect of fracture dip angle on the aperture and fluid flow under in-situ stresses in deep fractured rock masses. Cogeo@oeaw-giscience, 2011. http://dx.doi.org/10.5242/iamg.2011.0190.

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Ahn, Joonhong. Mass transfer and transport of radionuclides in fractured porous rock. Office of Scientific and Technical Information (OSTI), 1988. http://dx.doi.org/10.2172/7132953.

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Klavetter, E. A., and R. R. Peters. Estimation of hydrologic properties of an unsaturated, fractured rock mass. Office of Scientific and Technical Information (OSTI), 1986. http://dx.doi.org/10.2172/59907.

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Wang, H. F. Poroelasticity of fractured rock masses. Final report, August 1, 1991--October 31, 1997. Office of Scientific and Technical Information (OSTI), 1998. http://dx.doi.org/10.2172/615657.

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Bower, Kathleen Marie. A numerical model of hydro-thermo-mechanical coupling in a fractured rock mass. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/285475.

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Drozhko, E. G., Yu G. Mokrov, Yu V. Glagolenko, and L. M. Samsonova. Determination of Hydrologic Parameters of Fractured Rock Mass Based on Regional Groundwater Level Data in the Lake Karachai Area. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/760314.

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Lacerda Silva, P., G. R. Chalmers, A. M. M. Bustin, and R. M. Bustin. Gas geochemistry and the origins of H2S in the Montney Formation. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329794.

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The geology of the Montney Formation and the geochemistry of its produced fluids, including nonhydrocarbon gases such as hydrogen sulfide were investigated for both Alberta and BC play areas. Key parameters for understanding a complex petroleum system like the Montney play include changes in thickness, depth of burial, mass balance calculations, timing and magnitudes of paleotemperature exposure, as well as kerogen concentration and types to determine the distribution of hydrocarbon composition, H2S concentrations and CO2 concentrations. Results show that there is first-, second- and third- or
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