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ISSN: 2949-9305

Quantitative characterization of hydraulic fractures propagating through rock layers in shale-sandstone interbedded formation

The special geological conditions of shale-sandstone interbedded reservoirs pose great challenges to fracturing design. Insufficient understanding of their hydraulic fracturing behavior can easily lead...

Progress, trend, and challenges in testing and field monitoring of energy-absorbing rockbolts

Subterranean construction, like other types of geotechnical structures, necessitates ground support systems to prevent rock failure; one of the most prevalent is rockbolt. Rockbolts have evolved through...

Influence of initial stress difference on the hard rock fracture mechanism under stepwise unloading during large high-stress underground powerhouse layered excavation

With the continuous advancement of deep resource exploitation and underground engineering construction, the mechanical behavior and failure mechanisms of hard rock under stepwise unloading during Layered...

Response induced by transient blasting or seismic P-wave around a diversion tunnel with an imperfect rock-liner interface

The work focuses on transient response of a deep-buried circular lined diversion tunnel with an imperfect rock-liner interface, which is full of water, subjected to an aperiodic blasting or seismic...

Numerical and experimental studies of the natural mixing behavior between an uncemented paste backfill and dumped waste rock in stopes from laboratory toward field conditions. Part II: Application and prediction of the validated and calibrated numerical model

Directly dumping waste rocks (WR) underground produced into mine stopes being filled with cemented paste backfill offers several advantages. However, this practice can also present certain risks, especially...

A machine learning based attitude control model for open-type TBMs on the spiral ramp of Beishan underground research laboratory

Precise attitude control of Tunnel Boring Machines (TBM) is critically important for ensuring tunneling quality and safety, especially in tunnels with steep slopes, long curves, or small turning radii....

A caprock integrity assessment to optimize CO2 storage using coupled geomechanics: A case study of the Angostura Field

Long-term storage of carbon dioxide (CO2) in depleted hydrocarbon reservoirs or deep saline aquifers heavily depends on the sealing performance of the caprock. Therefore, it is crucial to evaluate the...

Calculation model of overburden pressure of large diameter mounded storage tanks under different overburden slope angles

Hazardous chemical horizontal tanks are widely used owing to their reliable storage capacity. To guarantee the safety and concealment of horizontal tanks, overburden is used to achieve effective isolation...

Raiseboring in Highly Stressed Grounds: Operational Guidance and Considerations to Mitigate Potential Reamer Failures

This study details the excavation of a 580m long, 3m diameter bored raise completed at Glencore’s Craig Mine in Sudbury, Ontario, Canada, at depths between 1915 and 2490m. During the excavation of the...

A novel approach for modeling rock permeability under varying stress and temperature conditions based on tortuous fracture network

Quantitatively characterizing the relationship between permeability, effective stress, and temperature is of critical importance for energy extraction and underground engineering applications. Since...

A prediction model for rockburst dominated by locked segments based on renormalization group theory

Rockburst stands as a frequent dynamic disaster occurring in deep underground engineering, characterized by their abrupt onset, substantial energy release, and considerable destructive power. It brings...

Effect of mining geometry on mining induced burst events – A case study

Rockburst is a complex problem that underground mines face around the world as they reach deposits at greater depths. Based on literature, it is well established that rockbursts can be caused by numerous...

Experimental investigations on tensile mechanical behavior and real-time thermal damage analysis of granite subjected to high temperature

Understanding the tensile mechanical characteristics and damage mechanisms of granite suffering thermal loading is of vital significance to the construction and safe operation of various deep underground...

An integrated intelligent long-term device for the borehole monitoring of deformation and evolution of fractures in rock masses

To solve the problems of complex operation, low efficiency, and lagging information collection in rock mass disaster monitoring, an integrated monitoring device is developed, which can simultaneously...

Numerical study on the mechanism of tool impact fragmentation in heterogeneous rock under confining pressure

To address the problems of damage observation and stress extraction during the impact breaking of granite by tools under confining pressure, a numerical model for the fragmentation of heterogeneous...

Dynamic responses of coal-rock-bolt composite with axial pre-stress and confining pressure

The stability of coal-rock-bolt composite (CRB) structures is critical in deep coal mining, particularly concerning damage mechanisms under combined static and dynamic loading conditions. This study...

Mechanism of transient phase transition in liquid oxygen with different absorbent media

This study captures transient phase change reaction images of dual liquid oxygen charges with different absorbent media in the same frame using a high-speed camera. Based on grayscale image temporal...

Insight into undercut-induced ground deformations in cave mines

As underground cave mines transition to greater depths, they face the unavoidable challenge of managing stress-driven instabilities on the extraction level, particularly those resulting from high abutment...

A micromechanics-based multiscale modeling of heterogeneous rocks with a complex microstructure

For the micromechanical analysis of heterogeneous materials, this study develops a new macroscopic yield criterion tailored to composites exhibiting a porous matrix-inclusion microstructure. At the...

Analysis of the influence mechanisms of key operational parameters on underground hydrogen storage

Underground hydrogen storage (UHS) is an emerging method to mitigate energy waste caused by the intermittency of renewable energy sources. Currently, the practical application of UHS in real sites remains...

Application of soft computing methods in underground mine stability: A PRISMA-based systematic review

Geological uncertainties make the prediction of rock mass behavior highly challenging, emphasizing the need for continuous advances in excavation stability and risk mitigation. Soft computing algorithms,...

Microseismic characteristics of a protective layer working face and roof pre-splitting prevention technology in high-risk areas

To reveal the role of protective layers in the prevention and control of rockburst during the mining of lower coal seams, based on the microseismic monitoring data of the entire mining process of the...

Tunnel crown settlement prediction based on CEEMDAN and BWO-optimized LSTM

The nonlinear and nonstationary deformation of the surrounding rock under complex geological settings makes tunnel crown settling prediction highly challenging. To deal with this issue, this study proposes...

Multidimensional thorough perception system for surrounding rock disasters in underground engineering and its application

The excavation process in large underground engineering projects faces the challenges of various disasters, and safety monitoring is an important method for addressing these challenges. To ensure the...

Infrared thermal image detection method of stressed sandstone fracture based on deep learning

Under stress, multiple cracks in the localized damaged zones in mine rock masses will expand and connect, which can lead to the rock mass instability and failure. Rapid, accurate identification of cracks...

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