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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 Study of Hard Rock Cantilever Roadheader Based on PCA and DBN
With the wide application of cantilever roadheader in urban subway tunnel construction, accurate prediction of excavation performance of cantilever...
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A New Prediction Model for Cutting Depth of Hard Rock Using High-Pressure Water Jets
High-pressure pure water jet has been widely used in breaking soft rocks and medium–hard rocks, but its research on cutting hard rocks is very...
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A novel time-dependent damage constitutive model for hard rock materials
The mechanical behavior of deep hard rocks plays a crucial role in the long-term safety and stability of engineering structures. This work focuses on...
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Deformation characteristics and damage ontologies of soft and hard composite rock masses under impact loading
As one of the most common occurring geological landforms in deep rock formations, the dynamic mechanical properties of layered composite rock bodies...
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Tunnelling performance prediction of cantilever boring machine in sedimentary hard-rock tunnel using deep belief network
Evaluating the adaptability of cantilever boring machine (CBM) through in-depth excavation and analysis of tunnel excavation data and rock mass...
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A Hybrid Methodology of Rock Support Design for Poor Ground Conditions in Hard Rock Tunnelling
The design of rock support in hard rock tunnelling is often assisted by the use of empirical engineering rock mass classification systems. This has...
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A sound-based machine learning method for crack-type recognition in hard rock
The recognition of tensile and shear cracks during hard rock cracking is critical for early warning of rockbursts in deep rock engineering. However,...
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A Review: Applications of Fuzzy Theory in Rock Engineering
One of the sub-disciplines of geo-engineering is rock engineering, which studies the behavior of rocks against internal and external factors. Fuzzy...
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Excavation Stress Path Induced Fracturing Mechanism of Hard Rock in Deep Tunnel
Excavation of deep hard rock tunnels disturbs the initial stress imbalance, which can lead to rockburst, spalling and/or collapse. The disasters are...
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Drilling-Induced Cracking in Hard Rock Excavation
Hard rock excavation affects excavation efficiency. During excavation, the cutoff teeth of the tunnel boring machine are severely worn or even...
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Experimental Study on the Performance and Mechanism of High-Pressure Abrasive Waterjet Cutting Hard Rock
In order to improve the performance of high-pressure abrasive water jet cutting extremely hard rock, research on the cutting effect and mechanism of...
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Stress-rate dependency of uniaxial compressive strength of hard rock with regard to test procedure standards
The uniaxial compressive strength test of hard rock is one of the most worldwide applied tests for characterization of hard rock in rock engineering...
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Anisotropic creep behavior of soft-hard interbedded rock masses based on 3D printing and digital imaging correlation technology
Three-dimensional (3D) printing technology is increasingly used in experimental research of geotechnical engineering. Compared to other materials, 3D...
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Influence of Layer Thickness Ratio on the Mechanical and Failure Properties of Soft-Hard Interbedded Rock-like Material
To figure out the influence of soft-hard layer thickness ratio on specimens’ mechanical properties evolution and microcracking mechanism, combined...
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Stability analysis of soft–hard-interbedded anti-inclined rock slope
The instability of rock slope is still a very frequent geological disaster, which seriously affects people's life and production activities. Previous...
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Design Aspects Governing Disc Cutters and Cutterheads of Hard Rock TBM—A Review
Tunnel boring machine (TBM) has been in focus for the last few decades and is currently the most preferred excavation method for metro, hydro and...
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Cracks propagation characteristics of double-hole delay blasting in soft-hard composite rock mass
By researching the distance between blasthole and interface of soft-hard rock strata, as well as the time of delay detonation, blasting effect of the...
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Geophysical estimation of 2D hydraulic conductivity for groundwater assessment in hard rock
Accurate evaluation of aquifer potential is essential for groundwater assessments. Aquifer potential is mainly evaluated by aquifer parameters....
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Study on Blasting Characteristics of Shallow and Deep Soft-hard Rock Strata Based on Energy Field
The expected blasting effect of rock mass is always affected by the soft-hard rock strata with anisotropic mechanical properties, especially under...