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1-18 of 18
Keywords: sandstone
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Proceedings Papers
Fractal Characteristics of Deep Marble Under Impact Loading
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Paper presented at the ISRM 4th International Conference on Rock Dynamics, August 17–19, 2022
Paper Number: ISRM-ROCDYN-2022-023
... situation of deep rock by triaxial static-dynamic coupling load (Xiao et al. 2020). geologist geomechanics characteristic impact loading reservoir geomechanics strain rate reservoir characterization journal sandstone geology geological subdiscipline loading dynamic load marble deep...
Proceedings Papers
How Geo-Stress and Disturbance Energy Affect the Occurrence of Rockburst?
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Paper presented at the ISRM 4th International Conference on Rock Dynamics, August 17–19, 2022
Paper Number: ISRM-ROCDYN-2022-061
... on the mechanical behaviour of rock materials including granite (Tao et al. 2017, Ma et al. 2019, Yao et al. 2019), marble (Yin et al. 2014), sandstone (Li et al. 2010, Gong et al. 2010, Zhu 2019, Du et al. 2020, Zhou et al. 2020) and siltstone (Li et al. 2008). For instance, Li et al. (2008) invented a laboratory...
Proceedings Papers
Impact Responses of Frozen Sandstone Subjected to Low Temperature at High Strain Rates
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Paper presented at the ISRM 4th International Conference on Rock Dynamics, August 17–19, 2022
Paper Number: ISRM-ROCDYN-2022-062
... ABSTRACT: To explore the variation law of rock dynamic mechanical behavior under low temperature environment, the sandstone from the Hengduan Mountains is selected as the research object. Based on the original Φ100 mm split Hopkinson pressure bar (SHPB) equipment, combined with a low...
Proceedings Papers
Investigation of the Influence of Strain Rate and Water Saturation on the Shear Behavior of Sandstone Under Direct Shearing
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Paper presented at the ISRM 4th International Conference on Rock Dynamics, August 17–19, 2022
Paper Number: ISRM-ROCDYN-2022-063
... ABSTRACT: To investigate the influence of strain rate and water saturation on the mechanical property and failure behaviour of rock material, the direct shearing tests were carried out on sandstone specimens with strain rate range of 10 −5 ∼ 10 −2 s −1 . Acoustic emission (AE) activities...
Proceedings Papers
Experimental Study of Damage Evolution of Wetting-Drying Cyclic Sandstone Under Repeated Impacts
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Paper presented at the ISRM 4th International Conference on Rock Dynamics, August 17–19, 2022
Paper Number: ISRM-ROCDYN-2022-022
... on rock damage evolution under multiple weakening factors is insufficient but necessary. In this paper, a series of cyclic dynamic tensile tests were performed on W-D cyclic sandstone using the split Hopkinson pressure bar (SHPB), aiming to investigate the fatigue damage evolution of rock under coupled W...
Proceedings Papers
Experimental Investigation on the Dynamic Mechanical and Failure Behaviours of Hydrostatic Confined Rocks Containing Three Parallel Flaws
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Paper presented at the ISRM 4th International Conference on Rock Dynamics, August 17–19, 2022
Paper Number: ISRM-ROCDYN-2022-051
... ABSTRACT: In deep underground engineering, flawed rocks are commonly subjected to hydrostatic confining pressure and dynamic loadings simultaneously. In this paper, dynamic triaxial tests are carried on sandstone specimen containing three parallel flaws under four hydrostatic confining...
Proceedings Papers
Dynamic Mechanical Properties and Damage Mechanism of Sandstone Under Acidification Condition: Application for the Enhanced In-Situ Leaching of Low-Permeability Sandstone Uranium Deposit
Available to PurchaseQinghe Niu, Mingwei Hu, Wei Wang, Xuebin Su, Lixin Zhao, Wei Yuan, Jiangfang Chang, Yongxiang Zheng, Zhigang Du, Mingyi Chen, Jiabin He, Yuebei Wei, Luqi Wen
Paper presented at the ISRM 4th International Conference on Rock Dynamics, August 17–19, 2022
Paper Number: ISRM-ROCDYN-2022-018
... ABSTRACT: During the in-situ leach mining field, blasting and acidification methods are effective to improve the permeability of uranium reservoirs. To expound the synergy effect of the two methods, the dynamic mechanical properties and damage mechanism of sandstone under acidification...
Proceedings Papers
Experimental Study on Physical and Dynamic Splitting Properties of Temperature-Water Coupled Sandstone
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Paper presented at the ISRM 4th International Conference on Rock Dynamics, August 17–19, 2022
Paper Number: ISRM-ROCDYN-2022-057
... ABSTRACT: In order to study the influence of water bath at different temperature on rock physical and dynamic mechanical properties, 8 groups of water bath treatments at 25°C∼95°C were carried out to test the basic physical parameters of sandstone in roadway of coal mine, and impact splitting...
Proceedings Papers
Effect of the Loading Frequency on Mechanical Behaviour of Sandstones Under Cyclic Loading
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Paper presented at the ISRM 4th International Conference on Rock Dynamics, August 17–19, 2022
Paper Number: ISRM-ROCDYN-2022-048
... ABSTRACT: The research was performed to assess the effects of loading frequency on mechanical characteristics of the Khao Ya Puk Formation sandstone in the northern part of Thailand. The aims of this research are to assess fatigue behaviour and compare stress-strain deformation in rocks...
Proceedings Papers
Effect of Pore Water Pressure on the Shear Mechanical Properties of Sandstone Under Unloading Condition
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Paper presented at the ISRM 4th International Conference on Rock Dynamics, August 17–19, 2022
Paper Number: ISRM-ROCDYN-2022-047
... ABSTRACT: For the stability evaluation of excavation slopes suffering reservoir water fluctuation, the triaxial loading tests were performed on sandstone under different pore water pressures to obtain the peak strength, and unloading tests were then carried out to investigate the effect...
Proceedings Papers
Strength Weakening Mechanism of Water-Bearing Sandstone and its Rockburst Proneness Evaluation Based on Realistic Energy Release Rate (RERR)
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Paper presented at the ISRM 4th International Conference on Rock Dynamics, August 17–19, 2022
Paper Number: ISRM-ROCDYN-2022-037
... ABSTRACT: In this paper, uniaxial compression experiments of sandstone with different water content were carried out. The mechanism of the weakening of rock strength under water-rock interaction was mainly discussed. In particular, it is pointed out that the transformation of micro fracture...
Proceedings Papers
The Tensile Strength of Rock Samples from Bending Tests Under Impact Loads
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Paper presented at the ISRM 4th International Conference on Rock Dynamics, August 17–19, 2022
Paper Number: ISRM-ROCDYN-2022-078
... characterization stress response sedimentary rock rock type tensile strength sandstone geologist reservoir geomechanics impact loading condition experimental result rock sample kimachi sandstone impact velocity momentum loading condition geological subdiscipline brazilian test bending stress...
Proceedings Papers
Effect of Loading Rate on Mode i Fracture Toughness in Sandstone and its Micromechanism
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Paper presented at the ISRM 4th International Conference on Rock Dynamics, August 17–19, 2022
Paper Number: ISRM-ROCDYN-2022-020
... different loading rates, the split Hopkinson pressure bar tests were conducted on cracked straight through Brazilian disc (CSTBD) sandstone specimens. The results show that dynamic mode I fracture toughness, initiation fracture toughness and dissipated energy increase with increasing loading rate, while...
Proceedings Papers
Rock Mechanics Experiment and Analysis of Deep Tight Sandstone Under Alternating Load Pressure
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Paper presented at the ISRM 4th International Conference on Rock Dynamics, August 17–19, 2022
Paper Number: ISRM-ROCDYN-2022-068
... as a whole. sedimentary rock geologist wellbore design axial pressure geology clastic rock sandstone experiment reservoir geomechanics cyclic stress pore pressure mechanic experiment and analysis different con fi fracture kuqa depression high con fi rock type reservoir...
Proceedings Papers
Sandstone Failure Prediction Under Uniaxial Compression via Supervised Deep Learning on Acoustic Emission
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Paper presented at the ISRM 4th International Conference on Rock Dynamics, August 17–19, 2022
Paper Number: ISRM-ROCDYN-2022-070
... ABSTRACT: In this paper, the sandstone failure prediction was investigated, based on the deep learning and acoustic emission (AE) monitoring technique under uniaxial compressive loading condition. A deep learning-based prediction model was proposed to establish the relationship between failure...
Proceedings Papers
Experimental Study on Dynamic Tensile Mechanics of High Temperature Sandstone with Two Cooling Methods
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Paper presented at the ISRM 4th International Conference on Rock Dynamics, August 17–19, 2022
Paper Number: ISRM-ROCDYN-2022-054
... ABSTRACT: In order to study the influence of water cooling and natural cooling on the physical and dynamic tensile mechanical properties of high temperature sandstone, water cooling and natural cooling tests were carried out after high temperature treatment from 100°C to 900°C. The basic...
Proceedings Papers
Overview of geological materials research at the Cavendish Laboratory
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Paper presented at the ISRM 2nd International Conference on Rock Dynamics, May 18–19, 2016
Paper Number: ISRM-ROCDYN-2016-10
... ABSTRACT: Over a number of years, the Fracture and Shock physics group has engaged with the blast mining industry to investigate the physics of geological materials. This has encompassed a wide variety of materials including a number of sandstones, gneiss, schist, granite and iron ore. Efforts...
Proceedings Papers
Effect of loading rate on mechanical properties of anisotropic sandstone under compressive loading
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Paper presented at the ISRM 2nd International Conference on Rock Dynamics, May 18–19, 2016
Paper Number: ISRM-ROCDYN-2016-23
... ABSTRACT: An experimental investigation was carried out on the Hawkesbury sandstone to study effects of loading rate on the peak strength and deformability during uniaxial monotonic compressive testing. Axial load and axial and lateral deformations were measured precisely from start of loading...