A study on influence of blast-induced ground vibration in dragline bench blasting using signature hole analysis

Singh, Chitranjan Prasad; Agrawal, Hemant; Mishra, A. K.

doi:10.1007/s12517-020-05562-w

Cited by 13 publications

(2 citation statements)

References 18 publications

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“…The cross-sectional area of the column is 750 mm × 750 mm, and the cross-sectional area of the longitudinal beam is 800 mm × 500 mm. The total weight of the acid-station workshop is 11,470 t. We comprehensively considered the environmental conditions surrounding the blasting object, and made full use of the excavation of shock absorption grooves and the stacking of buffer cushions to reduce structural ground vibration and fragmentation of flying stones, and to avoid the ground vibration caused by explosions affecting the stability of nearby buildings [19,20]. The horizontal collapse distance of the structure is approximately 0.7 to 1 times the height of the building to be demolished; its lateral collapse range can reach 2 to 2.5 times the outer width of the building.…”

Section: Project Overviewmentioning

confidence: 99%

Case Study on the Effect of Delay-Time Differences between Columns during Blasting Demolition of RC Structures with a Small Height-to-Width Ratio

et al. 2023

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Blasting demolition plays an important role in building demolition, and numerical-simulation methods can facilitate the optimization of blasting-demolition schemes. To study the influence of the delay-time differences between columns on the blasting and demolition effect of small-aspect-ratio reinforced concrete structures, a separated common node model of small-aspect-ratio structures was established through the finite element numerical simulation software ANSYS/LS-DYNA. The results showed that the delay-time differences between columns influenced the position of the plastic hinge of the structure, and the plastic hinge was located at the end of the back span beam when the delay-time difference was 0.1~0.3 s. The plastic hinge moves to the top of the back row of the columns of the first floor at 0.4~0.8 s and to the end of each span of the beams at 0.9 s. When the plastic hinge is at the end of the beam, the orientation axis is located at the bottom of the back row of the columns of the first floor. Moreover, when the plastic hinge is at the top of the back row of the columns of the first floor, the orientation axis is at the same position as the plastic hinge. The delay-time difference also affects the recoil distance of the structure as well as the height of the burst pile. To ensure that the structure can be successfully collapsed under the preconditions of disintegration, for a small height-to-width ratio structure, the appropriate intercolumn delay-time difference is 0.4~0.5 s.

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Section: Project Overviewmentioning

confidence: 99%

Case Study on the Effect of Delay-Time Differences between Columns during Blasting Demolition of RC Structures with a Small Height-to-Width Ratio

et al. 2023

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“…Drilling and blasting method is the main tunneling method in tunnel construction, which is especially suitable for the excavation of solid rock and sub-solid rock mountain tunnels (Koopialipoor et al, 2019;Sharafat et al, 2021;Li, et al, 2022;Ma et al, 2022). Drilling and blasting will not only cause damage and disturbance to the surrounding rock of the tunnel, but also the seismic wave effect caused by blasting will affect the stability and safety of the buildings around the tunnel (Singh et al, 2020;Kan et al, 2022). Energy and frequency are the main parameter indexes to measure the performance of blasting vibration signal.…”

Section: Introductionmentioning

confidence: 99%

Frequency spectrum and energy refinement characteristics of blasting vibration signals in raw water pipeline tunnel excavation

Zhang

Ling

et al. 2022

Front. Earth Sci.

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The analysis of time-frequency variation and energy refinement characteristics of blasting vibration signals has contributed to understanding the propagation law of blasting vibration wave and reducing the possible losses. Combined with the measured data of tunnel blasting excavation and based on the newly constructed wavelet function, the spectrum distribution and energy refinement characteristics of tunnel blasting vibration signals are deeply explored and studied. The results demonstrated that compared to the Fourier spectrum, the innovative method of scale energy spectrum can not only acquire the dominant frequency of the blasting vibration signals, but also the obtained spectrum curve is smoother and can clearly reflect the change trend of the signal spectrum. The newly constructed biorthogonal wavelet has the characteristics of high vanishing moment, high regularity and matching with the waveform variation of the measured blasting vibration signals, and can describe the subtle variation characteristics of blasting vibration signal frequency. The continuous wavelet transform energy spectrum can reflect the three-dimensional energy distribution of blasting vibration signal in the time-scale domain, and the occurrence time of frequency, the frequency duration interval and time range of blasting vibration signal can also be acquired. Wavelet packet algorithm can precisely calculate the energy distribution of each frequency component in the signal, the tunnel blasting vibration signals (YBJ1, YBJ2) generated near the power tower presents low frequency, while the signals (YBF3,YBF4) far away from the power tower presents relatively high frequency. Measures should be taken to control the vibration and resonance of power tower caused by tunnel blasting. This research is of great significance for recognizing the propagation law of vibration waves, reducing the impact of blasting on surrounding buildings, and ensuring the safety of tunnel construction and surrounding buildings.

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A Study of Vibration Velocity Attenuation Induced by Pneumatic Rock Breaking with Carbon Dioxide Ice Powder for Safety Assessment

Wang

et al. 2021

Rock Mech Rock Eng

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A study on influence of blast-induced ground vibration in dragline bench blasting using signature hole analysis

Cited by 13 publications

References 18 publications

Case Study on the Effect of Delay-Time Differences between Columns during Blasting Demolition of RC Structures with a Small Height-to-Width Ratio

Case Study on the Effect of Delay-Time Differences between Columns during Blasting Demolition of RC Structures with a Small Height-to-Width Ratio

Frequency spectrum and energy refinement characteristics of blasting vibration signals in raw water pipeline tunnel excavation

A Study of Vibration Velocity Attenuation Induced by Pneumatic Rock Breaking with Carbon Dioxide Ice Powder for Safety Assessment

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