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ISSN: 2773-2304
CN: 10-1987/O3
p-ISSN: 2097-4671

The Influence of Faults on Adjacent Rock Mechanical Behavior and Acoustic Emission Characteristics: A Case Study of the Xianshuihe Fault Zone

Tensile strength is a crucial parameter for assessing rock stability and fracture characteristics, which play a significant role in the prediction and engineering design of geohazards. However, fault...

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Coupling effect of temperature and confining pressure on fracture toughness of transversely isotropic shale: Insights from a thermal-mechanical DEM model

The coupling effect of temperature and confining pressure on fracture toughness is a critical issue in deep shale gas development that cannot be overlooked. Field and laboratory studies have shown that...

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Variable elastic anisotropy controls stress in shallow crown pillars

As easily accessible natural resources become depleted, it is necessary to extract material from deeper levels and so mines may opt to develop a process of transition from open-pit to underground mining...

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Data-driven machine learning approaches for predicting the shear strength of rock joints

Accurate prediction of the shear strength of rock joints is crucial for assessing the stability of civil and mining engineering projects. Traditional methods for determining the shear strength of rock...

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Enhancing production rates at El Teniente's black cave mine through optimizing HF hole distribution using discrete fracture network modeling and geostatistical simulation methods

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

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

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

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

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

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

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

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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Forecasting Maximum Magnitude of Fluid-Induced Earthquakes: Bridging Statistical Extrapolation and Physics-Based Forecasting

The forecasing of maximum magnitude (Mmax) for fluid-induced seismicity is a critical challenge in risk management for geothermal energy development, unconventional hydrocarbon extraction, and wastewater...

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Definition and Classification of Rockburst

The rockburst is a violent failure in rock during mining and tunneling operations. Since tunnel constructions for hydropower and transportation purposes and mining operations in deep rock masses have...

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The Phlogiston Theory of Rock Mass Classification: Philosophical and Mathematical Critique of Ordinal Data Usage

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

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

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

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

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

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

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

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

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

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

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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