Blast wave induced spatial variation of ground vibration considering field geological conditions

Gui, Yilin; Zhao, Zhiye; Jayasinghe, Laddu Bhagya; Zhou, Hongyuan; Goh, Alvina; Tao, Ming

doi:10.1016/j.ijrmms.2017.11.016

Cited by 34 publications

(12 citation statements)

References 42 publications

(51 reference statements)

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“…For example, R. Nategh [10] studied the attenuation of PPVs on the surface for different types of explosives, detonators, and rocks. Y. L. Gui et al [11] researched the propagation of blasting vibrations in rock stratum and rock-soil strata through field tests and finite element simulations. U. Ozer [12] fitted the PPVs and the distance from the explosion source under different rocks.…”

Section: Introductionmentioning

confidence: 99%

Propagation characteristics of vibrations due to rock blasting in silt-rock strata

Yin¹,

Zhou²,

Zheng³

et al. 2022

Math. models, eng.

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The geological effects of rock blasting in silt-rock strata are complex, and the vibrations caused by the blasting threaten the safety of inhabitable areas. Based on measured data for the vibrations at the site and dynamic finite element simulations, the propagation characteristics of vibrations in silt-rock strata were studied. The propagation of the vibrations of the surface, the propagation characteristics of the vertical vibration velocities from the surface to the tunnel, and the attenuation of the blasting vibrations along the tunnel’s axis were analyzed. The results of this study are as followings: in the direction of the tunnel’s axis and in the direction vertical to the tunnel’s axis, the peak particle velocities (PPVs) of the surface decreases with increasing horizontal distance from the explosion source. The magnitudes of the PPVs of the surface under five working conditions are the same when the surface particle is right above the center of the explosion source and 10 m away from the center. In the vertical direction from the surface to the explosion source, the vertical direction of the silt-rock strata and the vertical direction of the silt stratum, the PPVs increases gradually with the increasing distance from the surface in the vertical direction. The change in the thickness of the artificial fill and silt in the shield interval strata has little effect on the PPVs along the tunnel’s axis. The results of this study provide a reference for identifying the safety distance around the inhabitable areas of rock blasting under similar geological conditions.

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Section: Introductionmentioning

confidence: 99%

Propagation characteristics of vibrations due to rock blasting in silt-rock strata

Yin¹,

Zhou²,

Zheng³

et al. 2022

Math. models, eng.

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“…The majority of blasting energy is used on the movement of rock fragments, heat, noise, and seismic vibrations. Concerning the stability and integrity of the rock mass and adjacent structures, the blasting-induced ground vibration has the most critical effect (Liu et al, 2017;Hu et al, 2018;Gui et al, 2018;Xu et al, 2019;Gou et al, 2020;Zorzal et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Blast-induced ground vibrations: a dynamic analysis by FEM

Zorzal

Nogueira

Lima

2022

RSD

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The peak particle velocities (PPV) are fundamental for understanding and managing the levels of blast-induced ground vibrations and their effects on adjacent structures. Given that numerical analysis of seismic vibrations has been demonstrated to be a method that can significantly contribute to predicting PPV, this study adopts a numerical approach using the finite element method (FEM) to assess blasting-induced ground vibration in rock masses. A dynamic module of the stress-strain analysis based on the FEM displacement formulation is developed in ANLOG software to estimate the variations of displacement, velocity, strain, and stress induced by blasting. The dynamic modulus implemented is verified using two verification examples. After, ANLOG is used in an application example to estimate seismic vibrations induced by blasting and to define the attenuation law for a limestone quarry near an urbanized area in Spain. The effect of Rayleigh damping coefficients (α and β) on the PPV levels estimated by ANLOG was investigated, and the most appropriate numerical attenuation law is then obtained. The numerical analysis presents satisfactory results for elastic-wave propagation induced by blasting and the peak particle velocity values obtained shows good agreement with field and the numerical results available in the specialized literature. The results indicate that ANLOG can perform personalized analysis of rock mass under blast-induced dynamic stress taking into consideration the geological and geomechanical characteristics particular to each medium as well as the blast parameters.

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“…In the few decades, amounts of researches have been carried out to study the response of structure to the blasting activities in tunnel constructions, such as the field tests, indoor experiments, numerical simulation, artificial intelligence [9][10][11][12][13][14][15][16][17]. Hong [18] studied the dynamic impact of cross section blasting excavation at intersections on the lining of existing tunnels, and the results showed that the maximum vibration velocity and the maximum tensile stress of each section of the lining were greatly reduced out of the range of ±8 m at the cross section, and the lining structure was more sensitive to blasting within the range of ±8 m around the blasting source.…”

Section: Introductionmentioning

confidence: 99%

Researches on the Influence of Blasting of Newly Built Tunnel on the Existing Tunnel Structure with Small Cross Angle

Du¹,

Xiao

et al. 2021

Advances in Civil Engineering

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In recent years, with the increasement of the railway expansion projects, the blasting damage has caused great threat to the safety of the existing tunnel structure. However, few researches are carried out on the influence of tunnel blasting construction on existing small-angle crossing tunnel structure. In this study, the dynamic response of existing tunnel structure to the blasting activities in newly built tunnel is analyzed by numerical simulation. From the comparison of vibration velocity, lining stress, and the displacement of the existing tunnel structure, the blasting methods, surrounding rock condition, cross angle, and clear distance are proven to be the highly correlated factors for the dynamic response of the existing tunnel to blasting. Then, combined with the analytic hierarchy process, the vibration velocity is selected as the optimal index to indicate the dynamic response to blasting activities.

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Blast wave induced spatial variation of ground vibration considering field geological conditions

Cited by 34 publications

References 42 publications

Propagation characteristics of vibrations due to rock blasting in silt-rock strata

Propagation characteristics of vibrations due to rock blasting in silt-rock strata

Blast-induced ground vibrations: a dynamic analysis by FEM

Researches on the Influence of Blasting of Newly Built Tunnel on the Existing Tunnel Structure with Small Cross Angle

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