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Determination of In Situ Stress by Inversion in a Superlong Tunnel Site Based on the Variation Law of Stress — A Case Study
The Sejila tunnel, part of the Sichuan-Tibet railway, is in a complex geostress environment because of its deep burial depths and tectonic movement....
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Numerical Modelling of Mining Induced Seismicity in Deep Closed Mines: A Case Study
Mining Induced Seismicity may be defined as a type of dynamic disaster experienced in both stages of mining and post mining. As the mining depth...
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Unstable Shear Slip Failure and Seismic Potential Investigation Using DEM in Underground Mining
Perturbations arising from mining operations significantly affect the stability of rock masses, and the influences aggerates with the rapid increase...
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Failure Characteristic Analysis and Warning Method of Sandstone Based on Catastrophe Theory
A uniaxial compression experiment was conducted on standard sandstone specimens to explore the sandstone’s mutation characteristics and early warning...
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Experimental Study on the Entropy Change Failure Precursors of Marble under Different Stress Paths
In this paper, the indoor loading and unloading tests and acoustic emission (AE) monitoring tests of marble under different stress paths are carried...
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Response Analysis of Rock Mass and Support Under Dynamic Loading
The stress wave propagation in rocks and its response to rock joints are important under dynamic loading conditions and have been studied...
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Experimental simulation investigation of influence of depth on spalling characteristics in circular hard rock tunnel
A series of true-triaxial compression tests were performed on red sandstone cubic specimens with a circular hole to investigate the influence of...
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Experimental study on the evolutions of normal stiffness of fractured granites after different temperature treatments
This study experimentally investigated the evolutions of normal stiffness of fractured granites after different temperature treatments. The...
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Combined effect mechanism of linear loading and disturbance with different amplitudes on sandstone
To comprehend the stress state and response characteristics of materials under complex conditions, researchers have decomposed stress states into...
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Ductile–brittle quantitative evaluation of rock based on post-peak properties under true triaxial stress
To quantitatively evaluate the influence of high true three-dimensional stresses on the ductile–brittle behaviours of rock in deep underground...
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Time-dependent behaviors and volumetric recovery phenomenon of sandstone under triaxial loading and unloading
The time-dependent behaviors of coal and rocks were easily ignored. Besides, “three-stage” triaxial loading and unloading mechanics tests of...
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Evolution mechanism and quantitative characterization of initial micro-cracks in marble under triaxial compression
The initial micro-cracks affect the evolution characteristics of macroscopic deformation and failure of rock but are often ignored in theoretical...
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The Simulation of Loading and Excavations as Dynamic Problem and Their Comparison with Static Solutions
Loading and excavation are fundamentally dynamic processes. However, the dynamic effects are often neglected if the overall system is stable...
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Microseismicity and focal mechanism of blasting-induced block falling of intersecting chamber of large underground cavern under high geostress
Block falling is a rock mass damage disaster that is easily encountered during the excavation of underground caverns. To objectively assess the...
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Mechanical Anisotropy of the Columnar Jointed Rock Mass Under Unloading Conditions
The mechanical properties of a columnar jointed rock mass (CJRM) under loading and unloading conditions differ appreciably. The CJRM at the Baihetan...
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Mechanics of thermal spallation and fracturing of dry rocks produced by surface heating
This paper reports the results of thermal spallation experiments on specially dried shale samples with 3 bedding orientations (0°, 45° and 90°) under...
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Numerical investigation on the mechanical and fracture behaviors of marble under cyclic loading and unloading true triaxial compression using discrete element method
The deep-buried rock is subjected to true triaxial stress states and is affected by repeated disturbance loads. The discrete element method was...
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Index of loading rate dependency of class I and class II rocks behavior in uniaxial compressive and Brazilian tensile tests
Understanding time-dependency of rock is indispensable for geotechnical applications to estimate long-term deformation and stability of underground...
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Dynamic tensile strength weakening effect of pretension stressed red sandstone under impact load
Tension failure of deep surrounding rock is a very common failure mode, which is closely related to the couple of static pre-stress and impact load....
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Influence of pillar wide and room’s height on the acoustic emission phenomena during crack evolution
The present study probes the effects of pillar wide and room’s height on the failure mechanism of model using experimental test and numerical...
