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Core Damage Caused by Locked-in Residual Stresses in a Shallow High-strength Rock Formation
Residual stresses refer to those stresses from sources other than contemporary tectonic forces that are locked within the rock formation. These...
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Novel Sub-core Extraction Method Using CNC Milling for Water-Sensitive and Fragile Rock
Extraction of sample from core using computer numerical control milling in fragile and water sensitive rock formations at any orientation.
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Investigation of the usability of wide wheel abrasion test on rock core samples
In this study, the usability of the wide wheel abrasion test (W A ) on rock cores using a newly designed core holder apparatus is investigated. The W A ...
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Chlorinated ethenes characterization using high-resolution rock core analysis in a weathered crystalline rock aquifer in São Paulo, Brazil
Most of the contaminant conceptual models in weathered crystalline bedrock aquifers in Brazil rely on data collected using conventional site...
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Investigation of the rock failure effect on overcoring stress relief test in deep hard rock
The failure of a rock core will result in the inaccuracy of in situ stress tests when the overcoring stress relief method is used in deep rock...
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Performance evaluation of asphalt concrete core earth-rock fill dam relative to clay core earth-rock fill dam in the case of Megech Dam, Ethiopia
Seepage control is one of the important requirements in the design of embankment dams. This requirement can be accomplished by using different...
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Study on the Influence of Brine-Rock Reaction on Rock Physical Property and Seepage Characteristics
In the process of CO2 flooding, the complex brine-rock reaction occurs as the reservoir rock in the acidic circumstance formed by CO2 and brine,...
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Investigation of the rock drilling performance of rotary core drilling
The specific drilling energy and penetration rate are very important performance parameters for drilling. The main objective of this study was to...
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Evaluation of the Rock Mass Strength for Hard Rock Pillar Design Using Bonded Block Models
The estimation of rock mass strength is a crucial step in pillar design. While the tri-linear (or S-shaped) failure criterion has been proposed to...
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Quantification of rock heterogeneity and application in predicting rock mechanical properties
Heterogeneity is an essential feature of rock, while most rock mechanics models only adopt conventional rock physical properties and ignore the...
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Automatic Estimation Of Rock Quality Designation Based On An Improved YOLOv5
Rock quality designation (RQD) characteristics for assessing the degree of rock mass fracture make it a key parameter in rock grading or other rating...
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A modified experimental approach to determine formation porosity from rock cuttings
As a cost-effective method for formation evaluation, analysis of rock cuttings provides essential information on petrophysical rock properties that...
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Surrounding rock instability mechanism for fault-crossing tunnels in water-rich soft rock
The stability assessment of a potential tunnel, especially a tunnel excavated under complicated geological conditions, is an essential task in tunnel...
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The influence of the heterogeneity of rock mass for surrounding rock stability evaluation of a tunnel
In this study, we reviewed the influence of various heterogeneity factors of rock mass on the displacement of the tunnel. We derived the critical...
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Evaluation of the Diametrical Core Deformation and Discing Analyses for In-Situ Stress Estimation and Application to the 4.9 km Deep Rock Core from the Basel Geothermal Borehole, Switzerland
The in situ state of rock mass stresses is a key design parameter, e.g., for deep engineered geothermal systems. However, knowledge of the stress...
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Core sample selection based on MRGC method utilizing geomechanical units
Coring is essential for understanding subsurface rock properties and optimizing reservoir characterization. This study explores the application of...
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Experimental Research on Dynamic Failure of Rock–Cemented Material–Rock Interface Considering Strain Rate Effect
Due to the presence of natural joints and weak interlayer interfaces in the rock mass, the rock mass will be damaged or even deformed to high degree...
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Numerical simulation and theoretical analysis of coal-rock meso-mechanics on core discing
During deep drilling in the high in situ stress area, the core discing phenomenon often occurs. Numerical simulations have been used to consider the...
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The Effect of Rock Type and Test Method on the Relationship Between MODE I Fracture Toughness and Rock Tensile Strength
Mode I fracture toughness is an important rock property in fracture mechanics. Due to its challenging test procedures, empirical formulas, in terms...
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3D Printing for Core Flooding Tests Evaluating
To assess the properties of natural reservoirs, direct tests of cores from wells are carried out. The use of a core has its own characteristics and...