Uniaxial Compressive Behavior of Granite at High Strain
the widely used building granite quarried in China, granite cylinders were made for static and dynamic tests. Two SHPB testing systems with dierent diameters Rock engineering tasks like tunnelling, dam and building construction, and rock slope stability rely heavily on properly estimating the rock’s uniaxial Prediction of Uniaxial Compressive Strength of Rocks from
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Triaxial Compressive Strength, Failure, and Rockburst
An energy storage index is introduced to discuss rockburst potential of the granite under thermal–mechanical coupled conditions. It is found that high-ground In this study, to understand the dynamic behavior of the widely used building granite quarried in China, granite cylinders were made for static and dynamic Uniaxial Compressive Behavior of Granite at High Strain Rates Rock
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Article Experimental investigation on compressive
By using the laser irradiation cracking method, this study investigates the changes in uniaxial compressive strength, ultrasonic characteristics and crack (2) The uniaxial compressive strength of jointed granite increases with increasing angle α between the joint and the maximum principal plane, and the peak Fracture Mechanics Behavior of Jointed Granite Exposed to
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Progress on rock mechanics research of Beishan granite for
For a better understanding of granite in China's Beishan pre-selected area for geological disposal of high-level radioactive waste, a series of investigations were compressive strength of granite ranged between 120 and 140 MPa, with the main minerals of quartz and albite. The detailed technical data were presented in our Experimental Investigation on Compressive Strength,
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Experimental Investigation on Compressive Strength,
Experimental Investigation on Compressive Strength, Ultrasonic Characteristic and Cracks Distribution of Granite Rock Irradiated by a Moving Laser Understanding the mechanical behaviors of granite after high temperature exposure and under confining stress conditions is an important issue in deep rock engineering projects such as the mining of deep underground solid mineral resources, deep geothermal energy exploitation and deep nuclear waste repositories. In this research, Experimental investigation on mechanical behaviors of Nanan granite
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Frontiers Strain rate effects on characteristic
In order to further investigate the strain rate effects on characteristic stresses and acoustic emission parameters of rock under quasi-static compression, uniaxial compressive tests were conducted on In this research, a series of biaxial compression and biaxial fatigue tests were conducted to investigate the mechanical behaviors of marble and sandstone under biaxial confinements. Experimental results demonstrate that the biaxial compressive strength of rocks under biaxial compression increases firstly, and subsequently decreases with Experimental investigations on mechanical performance of
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Comparative Evaluation of Empirical Approaches and
The uniaxial compressive strength (UCS) of rocks is one of the key parameters for evaluating the safety and stability of civil and mining structures. In this study, 386 rock samples containing four properties named the load strength (PLS), the porosity (Pn), the P-wave velocity (Vp), and the Schmidt hardness rebound number (SHR) are The lithology of the HDR reservoir is generally granite buried at a depth below 3 km with high rock mechanical strength, subjected to high in-situ stress and high temperature (150–650°C) environment. 2 For instance, the Qiabuqia geothermal field with granite formation located in the eastern part of the Gonghe basin of Northwest China Mechanical properties of granite at high temperature
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An experimental investigation on fatigue characteristics of granite
Granite specimens were used in this study and cored from a complete and unweathered rock mass in Yueyang, China. All samples were meticulously drilled along the same direction and machined to meet the processing standards recommended by ISRM. 39 For Brazilian tests, the diameter and height of the disc samples are 50 mm and 25 mm, The uniaxial compressive strength (UCS) of rock has been recognized as one of the major technical factors of rock-related engineering constructions [1,2,3], and it has also been regarded as the basic parameter of geotechnical engineering designs and constructions [].Moreover, UCS has been used in various aspects of the rock-mass Sustainability Free Full-Text Summary of the MDPI
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Triaxial Compressive Strength, Failure, and Rockburst
Deep underground rock tunnels and caverns in mountainous areas are often subjected to the coupling impacts of high geo-stresses and high-ground temperature that can threaten the stability of rock masses. This paper presents an experimental study of strength, deformation, and failure as well as energy evolution characteristics for rockburst 2 Material and Static Strength On Sep. 21, 2016, the granite material used in this study was quarried in Macheng, Hubei, China, where the granite quality was promising and the granite machining technolo-gies were very advanced over others in the country. Two types of specimens were created, namely, standard cylindersUniaxial Compressive Behavior of Granite at High Strain
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1,*,Yixian Xu 2 and Guojun Zhang 1, mdpi-res
the UCS of a rock, Wang and Aladejare [33] developed a method that can select the most appropriate mode for a specific rock site. Artificial techniques such as machine learning have been employed to estimate the compressive strength of brittle materials [34]. The UCS is an important parameter in the load-bearing computation of Thermal shock is common in fire disaster and blasting of rock engineering; moreover, the rock mass bears dynamic mechanical disturbance frequently. In order to study the damage characteristics of Damage Characteristic of Thermal Shock on the
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Dynamic properties of granite rock employed as coarse
Granite rock is widely distributed throughout the world, and there are large variations in the mechanical properties of granite extracted from various places for example, the granite from the Tarim area of Xinjiang Province, China, has a static uniaxial compressive strength slightly less than 100 MPa [9]; however, granite from theThus the RF-based model with five input parameters was adopted, except the static compressive strength, to further discuss the rate dependence of rock strength following the procedure in Fig. 2. This model considers a series of fine-grained sandstone specimens ( Yu et al., 2021 ) with the same aspect ratio and three different specimen Application of machine learning in predicting the rate
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Frontiers Size Effect on Mechanical Behaviors of Intact
The size effect on mechanical behaviors of rock materials has been a challenging topic. The previous research is mainly to study the relationship between known large-scale models and representative element volumes. However, only limited scale models can be obtained in situ or laboratory in many cases, so tests or simulations of mechanical Engineering problems are related to the failure of geological material, especially that of jointed rock masses. To investigate the influence of confining stress and inclination angle β on cracking behavior and failure mechanism, triaxial compression tests are conducted on rock-like samples containing parallel opening flaws. There are two Experimental and numerical investigation on compressive strength
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Size effect of mechanical characteristics of sandstone and granite
2. The size of cubic rock samples also has a significant influence on the uniaxial compressive strength. The uniaxial compressive strength of granite decreases linearly with the increase in size by up to 35%, showing an apparent size effect. The uniaxial compressive strength of sandstone increases linearly with the increase of its size by 12%. 3.2.1 Digital reconstruction of natural rocks. In this study, natural coal and sandstone containing a considerable amount of discontinuous structure were selected as rock samples, as shown in Figs. 1 and 2, respectively.Figure 1 shows a natural coal sample, containing well-developed cracks, obtained 700 m below the surface of the Shanjiaoshu Size effects in the uniaxial compressive properties of 3D
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Dynamic properties of granite rock employed as coarse
Granite rock is widely distributed throughout the world, and there are large variations in the mechanical properties of granite extracted from various places for example, the granite from the Tarim area of Xinjiang Province, China, has a static uniaxial compressive strength slightly less than 100 MPa [9]; however, granite from the
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