... 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... 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...

... 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...