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Article
Evaluation of Fracture Properties in Ceramics Made of Sulfidic Mine Tailings
Mine tailings (MTs), as the waste of mining activities, comprise finely crushed rocks and minerals that remain after the valuable ore content has been recovered. MTs typically occupy vast areas of land and pos...
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Article
Energy Budget of Brittle Fracturing in Granite Under Stress Relaxation and Creep
Creep and relaxation are the two major time-dependent fracturing processes in rocks. While a considerable amount of research has been done in understanding these two mechanisms, critical gaps remain regarding ...
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Article
Tensile behavior of layered rock disks under diametral loading: experimental and numerical investigations
The tensile strength and cracking behavior of layered rocks in a tensile stress field are one of the most significant characteristics of rock masses, which may strongly affect the stability of rock structures....
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Article
Micromechanics of Fracture Propagation During Multistage Stress Relaxation and Creep in Brittle Rocks
Time-dependent rock deformation caused by the initiation and growth of fractures leads to the weakening of the rock mass. Understanding the fracturing mechanisms involved in the time-dependent behavior in brit...
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Article
Introduction to Selected Contributions from the 54th US Rock Mechanics/Geomechanics Symposium, Golden, CO, 2020
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Article
An Integrated Approach for Evaluation of Linear Cohesive Zone Model’s Performance in Fracturing of Rocks
Fracturing in rocks results in the formation of an inelastic region surrounding the crack tip called the fracture process zone (FPZ), which is often characterized using the Linear Cohesive Zone Model (LCZM). V...
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Chapter and Conference Paper
R-Value and Resilient Modulus Prediction Models Based on Soil Index Properties for Colorado Soils
Resilient modulus (Mr), as an important mechanical property of soil, is used for analysis and design of pavements. Mr can properly describe the stress-dependent elastic modulus of soil materials under traffic loa...
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Article
Open AccessThe influence law of concrete aggregate particle size on acoustic emission wave attenuation
Elastic waves have different attenuation laws when propagating in various materials, which is one of the important challenges in the application of non-destructive testing methods, such as acoustic emission (A...
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Article
Detection of Seismic Precursors in Converted Ultrasonic Waves to Shear Failure of Natural Sandstone Rock Joints
Geophysical wave measurements have been used as a remote and non-destructive method to monitor the changes in the state of contact, stress, and deformation in rock joints. In recent studies, geophysical precur...
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Article
Time-Dependent Behavior of the Tunnels in Squeezing Ground: An Experimental Study
The presence of squeezing ground conditions often poses significant challenges in predicting tunnel response over time and to the design of an adequate support system to stabilize the tunnel. Many analytical, ...
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Article
Evaluation of an Ultrasonic Method for Damage Characterization of Brittle Rocks
An intact rock specimen, when subjected to uniaxial compression, experiences multiple stages of deformation. This begins with the nucleation of microcracks at low stresses (crack initiation—CI) and their subse...
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Article
The use of new intelligent techniques in designing retaining walls
The stability of retaining walls against overturning is analyzed in this study using artificial intelligence methods. Five input parameters including wall height, wall thickness, soil friction angle, soil dens...
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Article
Assessment of the Safety Factor Evolution of the Shotcrete Lining for Different Curing Ages
The behavior of the shotcrete linings during the tunnel construction is complex due to the variability of its mechanical characteristics during the curing time. After the installation of the support structure,...
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Article
Application of deep neural networks in predicting the penetration rate of tunnel boring machines
Performance prediction in mechanized tunnel projects utilizing a tunnel boring machine (TBM) is a prerequisite to accurate and reliable cost estimation and project scheduling. A wide variety of artificial inte...
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Article
The Elasto-Plastic Response of Deep Tunnels with Damaged Zone and Gravity Effects
Analysis of stresses and deformations around circular tunnels and shafts are is critical for evaluation of the interaction between the support system and the ground and, hence, the tunnel support design and st...
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Article
Coupling Taguchi and Response Surface Methodologies for the Efficient Characterization of Jointed Rocks’ Mechanical Properties
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Article
Applying various hybrid intelligent systems to evaluate and predict slope stability under static and dynamic conditions
The evaluation and precise prediction of safety factor (SF) of slopes can be useful in designing/analyzing these important structures. In this study, an attempt has been made to evaluate/predict SF of many hom...
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Article
Develo** a new intelligent technique to predict overbreak in tunnels using an artificial bee colony-based ANN
The drilling and blasting technique is among the common techniques for excavating tunnels with different shapes and sizes. Nevertheless, due to the dynamic energy involved, the rock mass around the excavation ...
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Article
Experimental and Numerical Investigation of the Center-Cracked Horseshoe Disk Method for Determining the Mode I Fracture Toughness of Rock-Like Material
This paper presents a new procedure for determining the fracture toughness of rock-like specimens using the diametric compression test with the center-cracked horseshoe disk (CCHD) method. Using finite element...
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Article
Experimental and Numerical Study of Shear Fracture in Brittle Materials with Interference of Initial Double Cracks
A simultaneous experimental and numerical study of shear fracture of concrete-like materials is carried out using Brazilian disc specimens with initial double edge cracks and fourpoint bending beam specimens w...
