Experimental study on wave propagation through granite after high-temperature treatment

Fan, L.F.; Yang, Kai; Wang, M.; Wang, L.J.; Wu, Zhijun

doi:10.1016/j.ijrmms.2021.104946

Cited by 54 publications

(11 citation statements)

References 27 publications

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“…Typically, the vibration of the particle is quantified by the peak particle velocity (PPV), which can be predicted by empirical equation (Murmu et al, 2018) or numerical model (S. C. Fan et al, 2004; Huang et al, 2022; Z. Liu, Jiang, et al, 2020). There are also some researchers who focus on the wave propagation in jointed mass (Deng et al, 2012; L. Fan et al, 2013, 2018, 2021; Zhou et al, 2017). In this study, a field blasting test of underground double‐line subway tunnels located in Guangzhou, China is reproduced to investigate the impact of blasting wave on the adjacent tunnel (Wang et al, 2022).…”

Section: Resultsmentioning

confidence: 99%

High‐performance computing of 3D blasting wave propagation in underground rock cavern by using 4D‐LSM on TianHe‐3 prototype E class supercomputer

Guo-jie

2022

Deep Underground Science and Engineering

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Parallel computing assigns the computing model to different processors on different devices and implements it simultaneously. Accordingly, it has broad applications in the numerical simulation of geotechnical engineering and underground engineering, of which models are always large-scale. With parallel computing, the computing time or the memory requirements will be reduced by splitting the original domain of the numerical model into many subdomains, which is thus named as the domain decomposition method. In this study, a cubic and equal volume domain decomposition strategy was utilized to realize the parallel computing on the distributed memory system of four-dimensional lattice spring model (4D-LSM) based on the message passing interface. With a more efficient communication strategy introduced, this study aimed at operating an one-billion-particle model on a supercomputer platform. The preprocessing procedure of the parallelized 4D-LSM was restructured and the particle generation strategy suitable for the supercomputer platform was employed to minimize the time consumption in preprocessing and calculation. On this basis, numerical calculations were performed on TianHe-3 prototype E class supercomputer at the National Supercomputer Center in Tianjin. Two fieldscale three-dimensional blasting wave propagation models were carried out, of which the numerical results verify the computing power and the advantage of the parallelized 4D-LSM in the simulation of large-scale three-dimension models. Subsequently, the time complexity and spatial complexity of 4D-LSM and other particle discrete element methods were analyzed.

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Section: Resultsmentioning

confidence: 99%

High‐performance computing of 3D blasting wave propagation in underground rock cavern by using 4D‐LSM on TianHe‐3 prototype E class supercomputer

Guo-jie

2022

Deep Underground Science and Engineering

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“…In addition to theoretical research methods, experimental methods [24][25][26][27] and numerical studies [28][29][30] are also important for studying jointed rock masses. Using cementitious mortar as the rock joints, Han et al 31 tested red sandstone samples with the different thicknesses of rock joints by taking a modified SHPB system to investigate the propagation of stress waves in jointed rock masses.…”

Section: Introductionmentioning

confidence: 99%

“…In addition to theoretical research methods, experimental methods 24–27 and numerical studies 28–30 are also important for studying jointed rock masses. Using cementitious mortar as the rock joints, Han et al 31 .…”

Section: Introductionmentioning

confidence: 99%

Propagation of P‐SV waves radiated by explosive columns in jointed rock masses

Wei,

Wang,

Zhu

et al. 2023

Num Anal Meth Geomechanics

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When an explosive column initiates, it will radiate P‐SV waves. The propagation of P‐SV waves, which carry the majority of the explosion energy, is extremely complex in jointed rock masses. Therefore, studying the propagation of blasting stress waves in jointed rock masses is of great significance for optimizing the parameters of the blastholes and improving the economy and safety of geotechnical engineering construction. In this study, an analytical model of the propagation of P‐SV waves radiated by explosive columns in jointed rock masses is derived. Using this analytical model, the maximum displacement distribution in jointed rock masses with the free surface is analyzed, and the results show: (1) when the stress waves propagate to the free surface, the reflected waves will be generated, which will produce the remarkable superposition effect with the direct waves, while the superposition effect will affect the maximum displacements at the measuring points significantly; (2) the amplitude of transmitted waves generated from the stress waves that propagate through the rock joints is smaller than that of direct waves, thus the maximum displacements at the measuring points are affected by the rock joints within a certain range; (3) the velocity of detonation (VOD) and the length of the explosive column can affect the superposition effect of stress waves, ultimately impacting the maximum displacement distribution in jointed rock masses. Therefore, optimizing the parameters of the blastholes reasonably to achieve the optimal superposition of stress waves is of great significance for improving the construction efficiency of geotechnical engineering.

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“…The rock discontinuity deformation may be caused by dynamic loads such as earthquakes, rock drilling and rock blasting. [11][12][13][14][15][16] The rock discontinuity may show different mechanical responses compared to static load conditions. Therefore, studying the slip and dynamic shear deformation of rock discontinuities is significant for better evaluating the stability of rock masses.…”

Section: Introductionmentioning

confidence: 99%

Investigation of slip characteristics and contact area evolution of rough rock discontinuity under impact shear load

Fan,

Li,

et al. 2023

Num Anal Meth Geomechanics

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This study investigated theshear slip behavior and contact area evolution of rough rock discontinuities with impact shear load. First, the dynamic impact shear numerical simulation of rock samples with real rough rock discontinuities was carried out. Subsequently, the variety rule of slip displacement and velocity of rock discontinuity with impact velocity, confining stress and joint roughness coefficient (JRC) was studied. The variation in contact area and shear stress of rock discontinuity during shear was assessed. Finally, the effect of frictional force on the slip displacement and velocity and the effect of contact area and frictional force on the shear stress distribution were analyzed. The results showed that the slip displacement, velocity and shear stress are rate dependent. The slip displacement and velocity increase as the impact velocity increases and decrease as the confining stress and JRC increase. The contact area and shear stress distribution range of rock discontinuities decrease slightly as the impact velocity increases but increase significantly as the confining stress and JRC increase. The shear stress distribution range of rock discontinuities closely correlates with the contact area. The shear stress in the non‐contact area is zero. The shear stress distribution range increases as the contact area increases. The average shear stress increases as the frictional force increases. Moreover, the slip displacement and velocity of rock discontinuities decrease linearly as the frictional force increases.

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Experimental study on wave propagation through granite after high-temperature treatment

Cited by 54 publications

References 27 publications

High‐performance computing of 3D blasting wave propagation in underground rock cavern by using 4D‐LSM on TianHe‐3 prototype E class supercomputer

High‐performance computing of 3D blasting wave propagation in underground rock cavern by using 4D‐LSM on TianHe‐3 prototype E class supercomputer

Propagation of P‐SV waves radiated by explosive columns in jointed rock masses

Investigation of slip characteristics and contact area evolution of rough rock discontinuity under impact shear load

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