Enhancing production rates at El Teniente's black cave mine through optimizing HF hole distribution using discrete fracture network modeling and geostatistical simulation methods
April 2025
This study at the Esmeralda Mine, part of the El Teniente Division of CODELCO, investigates optimizing hydraulic fracturing (HF) holes’ spatial distribution to improve rock material production in one...
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Research on narrow coal pillar width optimization and surround rock control in Shiquan mine
April 2025
To address the issue of severe coal resource waste and substantial deformation of the surrounding rock caused by the retention of coal pillars for protective lanes during the excavation along the void...
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Prediction of rock fracture pressure in hydraulic fracturing with interpretable machine learning and mechanical specific energy theory
April 2025
Hydraulic fracturing stimulation technology is essential in the oil and gas industry. However, current techniques for predicting rock fracture pressure in hydraulic fracturing face significant challenges...
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Evolution of mechanical and rockburst parameters of gypsum-like rock under fatigue stress disturbance
April 2025
To investigate the deterioration of mechanical properties in engineering rock masses subjected to fatigue stress, this study conducted laboratory tests, theoretical analysis, and model building to analyze...
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A microscopic DEM investigation on fracture shearing characteristics of infilled grains with different geometrical shapes in rock discontinuities
April 2025
Rock discontinuities or faults often contain a layer of granular material. However, the evolutionary behavior (movement and breakage) of such infilled grains under shearing have not been comprehensively...
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Velocity effects on slip evolution of faults subjected to constant and cyclic normal stress derived from laboratory tests
April 2025
Understanding the slip-style evolution of tectonic faults is important for exploring the earthquake mechanisms. To reveal the fault slip characteristics under a complex stress state, we conducted a...
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Investigation on stress distribution and prestress loss model of prestressed anchor cables considering corrosion-induced debonding
April 2025
Corrosion can significantly impact the safety and stability of the entire structure by reducing the service life and load-bearing capacity of anchors. This study provides an in-depth examination of...
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Theoretical and numerical investigation of the effects of in-situ stresses and dual-borehole combinations in eccentric decoupled charge blasting
April 2025
Eccentric decoupled charge (EDC) blasting is a widely used technique for rock fragmentation and tunnel excavation, yet the underlying rock damage mechanisms, particularly in relation to in-situ stresses...
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The Phlogiston Theory of Rock Mass Classification: Philosophical and Mathematical Critique of Ordinal Data Usage
Available online 17 April 2025
The widespread use of rock mass classification systems in engineering practice relies on mathematical operations and assumptions that violate fundamental principles of measurement theory. This paper...
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Elastoplastic analysis of deep circular tunnels under the effect of blasting damaged zone and hydraulic flow
Available online 15 April 2025
In drill and blast method, due to uncontrolled blasting operations, the blast-induced damaged zone (BIDZ) is formed, whose mechanical and hydraulic properties are altered. This zone affects the behavior...
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Analysis of Spectrum Characteristics for Multi-attribute Seismic Data from Shaking Table Test of Tunnel Underpass Hauling Sliding Surface
Available online 3 April 2025
The objective of this research is to analyze the deformation characteristics in space and the dynamic reaction of tunnel underpass hauling sliding surfaces when subjected to potential seismic activities....
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Impact mechanism of fabric changes in different classes of redbeds under static water on their degradation of physical properties
Available online 28 March 2025
Deterioration of the physical properties of redbeds is one of the leading causes of geological disasters, engineering problems, and ecological damage. Fabric changes are internal factors leading to...
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A green coal mining method for protecting roadways and overlying strata
Available online 21 March 2025
The non-pillar mining method with automatically formed roadway (NPM-AFR) is an innovative mining method. This paper provides a detailed description of how this method achieves the cancellation of pillar...
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The Effect of Geometrical Parameters on Wedge Failure of Rock Slopes Using Physical and Numerical Modelling
Available online 20 March 2025
This study investigated the role of the geometrical parameters of a wedge block on its stability using physical and numerical modeling. For the purpose of physical modeling, a new experimental setup...
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Modeling of particle migration in piping based on an improved discrete element method
January 2025
Pore-scale particle migration in piping is the main reason of the suffusion-induced damage, which poses a significant threat to earth-rock dams. In order to investigate the micro-mechanism of piping...
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The effects of staggered and non-staggered joints on the ultimate bearing capacity, load settlement behavior, and failure mechanism with the change of excavation depths
January 2025
Extensive research is available on excavation walls in soils. However, very few studies address their performance in rocks and jointed rock masses. This study aimed to investigate the effect of staggered...
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Dynamic evolution of reservoir permeability and deformation in geothermal battery energy storage using abandoned mines
January 2025
Retasking existing subsurface abandoned mines as infrastructure for solar energy storage could be a feasible approach in overcoming the low thermal gradient present in shallow formations. In this work,...
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Manually directional splitting of in-situ intact igneous rocks into large sheets
January 2025
This paper presents a directional large-area rock fracturing method. The method had distinctive features compared with other common fracturing methods. The area of the fracturing surface could reach...
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Finite domain solution of a hydraulic fracture in a permeable rock
January 2025
In this work, we present a domain-based algorithm to simulate the propagation of a plane-strain hydraulic fracture in a zero-toughness permeable elastic medium. The algorithm utilizes a domain-based...
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Data-driven machine learning approaches for simultaneous prediction of peak particle velocity and frequency induced by rock blasting in mining
January 2025
The vibrations generated by rock blasting are a serious and hazardous outcome of these activities, causing harmful effects on the surrounding environment as well as the nearby residents. Both the local...
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Three-dimensional numerical study of DTH bit-rock interaction with HPWJ downhole slotting: Influence of bit design and bottom hole geometric conditions on rock breaking efficiency in percussive drilling
January 2025
The EU H2020 ORCHYD project seeks to enhance drilling efficiency in hard rock environments, particularly for deep geothermal wells, by integrating innovative rock weakening techniques. In this context,...
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Analysis of tunnel lining internal forces under the influence of S and P-waves: An analytical solution and quasi-static numerical method
January 2025
This paper employs analytical and pseudo-static approaches to analyze the tunnel response under the compression (P) and shear (S) waves. In the first step, Einstein and Schwartz’s method is revised...
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Numerical modeling of the long-term poromechanical performance of a deep enhanced geothermal system in northern Québec
January 2025
This study numerically investigates the thermo-poromechanical effects in a Canadian geothermal reservoir caused by long-term fluid production and injection. Using finite element modeling, it explores...
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Study on damage characteristics of iron ore under variable line density charge structure blasting
October 2024
Blasting test research was conducted on iron ore specimens with variable line density charging structures. Computer tomography (CT), digital image processing, and three-dimensional model reconstruction...
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Continuous-discontinuous analysis of bench blasting in open-pit mining: Influences of hole packing and caving holes
October 2024
Bench blasting is commonly used in open-pit mining. Some design parameters such as positions of hole packing and caving holes have great influences on the blasting effects. In this work, with a hybrid...
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