Estimation of particle velocity based on blast event measurements at different rock units

Mesec, Josip; Kováč, Ivan; Soldo, Božo

doi:10.1016/j.soildyn.2010.04.011

Cited by 46 publications

(19 citation statements)

References 3 publications

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“…Because of the randomness and variability of blasting source and topographic and geological factors, the generation and propagation mechanism of blasting vibration wave is very complex. Although a lot of research has been done on the influence factors of blasting vibration and the characteristics of blasting vibration wave [8][9][10][11][12][13], there are still some problems that have not been fundamentally solved.…”

Section: Introductionmentioning

confidence: 99%

Analysis on Influencing Factors of Blasting Vibration Caused by Shallow Tunnel Excavation

Wei¹,

Qin²,

Zhu³

et al. 2019

AJCE

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With the widespread construction of urban subway, more and more shallow tunnels will be constructed by blasting, and the problem of blasting vibration will become more prominent. Because of the randomness and variability of blasting source and topographic and geological factors, the propagation mechanism and influencing factors of blasting vibration wave are very complex. Based on blasting-vibration sample data obtained from the established numerical model of blasting excavation in shallow tunnel, the relational degree analysis was carried out for influencing factors of blasting vibration caused by shallow tunnel excavation with method of grey relational analysis. The results of the study are as follows: Among the four related factors, there is no optimal factor, and the maximum charge of one section is the quasi-optimal factor; The charge of the first section is the main factor affecting the peak particle velocity of blasting vibration; The maximum charge of one section is the main factor affecting the main frequency of blasting vibration; The delay interval is the main factor affecting the duration of blasting vibration. Furthermore, the measures to control blasting vibration caused by shallow tunnel excavation were put forward, such as reducing the charge of the first section, reducing the maximum charge of one section and rationally setting up the delay interval. The study has important guiding significance for safe blasting construction in shallow tunnel and scientific control of blasting vibration effect.

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Section: Introductionmentioning

confidence: 99%

Analysis on Influencing Factors of Blasting Vibration Caused by Shallow Tunnel Excavation

Wei¹,

Qin²,

Zhu³

et al. 2019

AJCE

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show abstract

“…Impact assessment of seismic effects caused by blasting operations depends on the distance and blasting of the objects and the size of the load in the individual timing stages used in blasting [8]. To determine the size limit load and the minimum distance, it is necessary to establish the attenuation characteristics of seismic waves in the assessed area [9][10][11]. Technically unjustified high-seismic safety leads to the reduction of charges and blasts, which has an adverse effect on the economy of rock disintegration and mining.…”

Section: Introductionmentioning

confidence: 99%

Critical Distance of the Seismic Waves’ Impact in Disintegration of Rock Blasting

Kudelas

Pandula

Cehlár

et al. 2019

Shock and Vibration

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The presented paper deals with attenuation of seismic waves, which depends on the degree of disintegration of the rock environment in which seismic waves are propagated due to the explosion of explosive charges during blasting operations. Measurements of the impact of seismic waves were conducted to determine the best possible way to absorb these waves. The aim of the article is to identify the existence of a critical distance and the determination of the critical point from which the propagation of the velocity is not dependent on the type of deposit and the environment in which the seismic wave propagates. Statistical methods were used for these findings. The result is the determination of the distance of 80 m in which the speed on the individual deposits varied. From this limit on, there was no significant difference in the speed of propagation on the individual deposits.

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“…The vibration effects vary from annoying human disturbances to structural damage. Scientists and experts in this area agree that the level of excited ground and structure vibrations depends on blasting technology, explosive type and mass, delay-timing variations, site geology, scaled distance, parameters of waves propagating at a location, susceptibility ratings of adjacent and remote structures, and other factors (Mesec et al, 2010;Mesec et al, 2016). However, the prediction of particle velocity has great importance in the minimisation of the environmental complaints.…”

Section: Introductionmentioning

confidence: 99%

Reducing the Adverse Effects of Blasting on the Cave Ecosystem Near the Future Exploitation Field Gradusa

Mesec

Težak

Jug

2018

MGPB

Self Cite

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The future exploitation fi eld of crushed stone Gradusa is located in the area of the Sunja municipality in the Sisak-Moslavina County. Near Gradusa, there is a cave that is part of the ecological network as a conservation area important for several species and habitat types of bats. The signifi cance of the cave is also its location in the continental part of Croatia where it is among a small number of objects that bats can use in all periods of their annual cycle. Due to the location and importance of habitats, there was a need to defi ne the primary environmental impact assessment for the ecological network. This assessment is the most important document for the possible acquiring of a location permit for exploitation of the future quarry of Gradusa. This paper presents the results of trial blasting and guidelines for reducing the adverse blasting eff ects on the cave ecosystem near the future exploitation fi eld Gradusa. These are vibrations and noises, which may have an adverse impact on the habitats of bats. Cavers and experts on bats have also been included in the process of selecting the micro-location.

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Estimation of particle velocity based on blast event measurements at different rock units

Cited by 46 publications

References 3 publications

Analysis on Influencing Factors of Blasting Vibration Caused by Shallow Tunnel Excavation

Analysis on Influencing Factors of Blasting Vibration Caused by Shallow Tunnel Excavation

Critical Distance of the Seismic Waves’ Impact in Disintegration of Rock Blasting

Reducing the Adverse Effects of Blasting on the Cave Ecosystem Near the Future Exploitation Field Gradusa

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