Comparative Study on Calculation Methods of Blasting Vibration Velocity

Liang, Qingzhong; An, Yafang; Zhao, Lei; De-wu, LI; Yan, Liping

doi:10.1007/s00603-010-0108-3

Cited by 34 publications

(13 citation statements)

References 4 publications

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“…If the blasting parameters are unreasonably designed, closed microcracks are generally produced in hard rock mass; therefore, microcracks are generally developed along the joints and fractures adjacent to presplit blast holes in soft and crushed rock masses, so that the structural plane of a rock mass is seriously damaged, allowing the appearance of damage induced by back impact after the blasting of adjacent blast holes. erefore, it is necessary to design the presplit blasting parameters according to the mechanism underpinning presplit blasting while considering the influences of factors such as behaviour of explosive and the physicomechanical properties of the rock mass [35,36].…”

Section: Parameter Design For Presplit Blastingmentioning

confidence: 99%

A Preliminary Study on the Design Method for Large-Diameter Deep-Hole Presplit Blasting and Its Vibration-Isolation Effect

Xiao

Wang

Dong

2019

Shock and Vibration

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Presplit blasting can reduce vibration and back impact induced by cast blasting, thus resulting in a smooth bench slope. To design reasonable presplit blasting parameters, this research investigated the formation of presplit faces based on the explosion mechanics and revealed the cracking mechanism of presplit blasting. According to the stress distribution in the vicinity of the blast holes under the action of explosive stress waves and blasting gas, we deduced theoretical formulae for parameters including charge mass in blast holes, hole spacing, and distance from presplit blast holes to cushion holes. On this basis, a method was proposed for the design of large-diameter deep-hole presplit blasting. Field testing was conducted by setting different spacing for presplit blast holes, to monitor the blasting-induced vibration. The results showed that appropriate hole spacing can reduce the particle vibration velocity and the attenuation index of blasting-induced vibration changed slightly while the attenuation coefficient decreased significantly; the formed presplit faces were smooth and had a high half-cast factor. Finally, the reasonable hole spacing for presplit blasting, distance from presplit blast hole to the cushion hole, and the charge mass in blast holes in the Heidaigou open-pit coal mine were determined, respectively.

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Section: Parameter Design For Presplit Blastingmentioning

confidence: 99%

A Preliminary Study on the Design Method for Large-Diameter Deep-Hole Presplit Blasting and Its Vibration-Isolation Effect

Xiao

Wang

Dong

2019

Shock and Vibration

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show abstract

“…Sodev's empirical formula has been demonstrated by most engineering tests and is widely used because of the high accuracy of the predicted particle velocity of blasting vibrations at ground level, under flat terrain conditions [12][13][14][15]. The accuracy of this formula is poor when the blasting environment is complex and the topography of the blasting site changes greatly.…”

Section: Shock and Vibrationmentioning

confidence: 99%

Water-Depth-Based Prediction Formula for the Blasting Vibration Velocity of Lighthouse Caused by Underwater Drilling Blasting

Wang²,

Liu

et al. 2017

Shock and Vibration

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Lighthouses are the most important hydraulic structures that should be protected during underwater drilling blasting. Thus, the effect of blasting vibration on lighthouse should be studied. On the basis of the dimensional analysis, we deduced a revised formula for water depth based on Sodev's empirical formula and established the linear fitting model. During the underwater reef project in the main channel of Shipu Harbor in the Ningbo-Zhoushan Port, the blasting vibration data of the lighthouse near the underwater blasting area were monitored. The undetermined coefficient, resolvable coefficient, and value of the two formulas were then obtained. The comparison of the data obtained from the two formulas showed that they can effectively predict the blasting vibration on the lighthouse. The correction formula that considers water depth can obviously reduce prediction errors and accurately predict blasting vibration.

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“…A large number of analysis results of measured data indicate that PPV can be expressed as a function of charge weight ( ), distance from blasting center ( ), rock and soil properties along traveling path of blasting wave and conditions at measuring points [15]. The widely used Sodev's formula is as follow:…”

Section: Analysis On Ppvmentioning

confidence: 99%

Experimental study on ground vibration of blasting the boulder with tandem shaped charging warhead

Wang¹,

Gu²,

Liu³

et al. 2016

J. vibroeng.

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Hazardous effects of blasting the boulder with the new breaking-blasting equipment-tandem shaped charging warhead are mainly air shock wave, seismic wave and blast slung shot. Blast-induced ground vibration is one of the inevitable effects and may cause substantial damage to nearby structures. Started from the formation process and mechanism of ground vibration to study the seismic wave, the research attained curve of vibration velocity of monitoring points by TC-4850 and carried out differential and fast Fourier transform analysis of the curve. And the results concluded that blasting vibration with tandem shaped charging warhead mainly comes from prime charge; the attenuation law can be predicted by Sadev's Formula. Explosion vibration frequency range is 20-150 Hz, while with the increase of distance from the blasting center, blasting vibration intensity attenuates rapidly, vibration duration increases and vibration frequency gradually reduces. Compared with general rock blasting, its attenuation rate of blasting vibration is faster with higher frequency and smaller impact on buildings, but the harm effects should not be ignored for the special application environment.

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Comparative Study on Calculation Methods of Blasting Vibration Velocity

Cited by 34 publications

References 4 publications

A Preliminary Study on the Design Method for Large-Diameter Deep-Hole Presplit Blasting and Its Vibration-Isolation Effect

A Preliminary Study on the Design Method for Large-Diameter Deep-Hole Presplit Blasting and Its Vibration-Isolation Effect

Water-Depth-Based Prediction Formula for the Blasting Vibration Velocity of Lighthouse Caused by Underwater Drilling Blasting

Experimental study on ground vibration of blasting the boulder with tandem shaped charging warhead

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