Vibration, blasting

It should be emphasized that the expression given in the above equation relating the peak particle velocity, charge-weight-per-delay-period, and distance provides typical values only for planning blasting projects in the absence of seismic data. For further detailed information on blasting situations where the above equation is not applicable, the measurement and interpretation of seismic waves, and techniques necessary to reduce blast vibration, the reader is referred to Refs 1,3 4 Effects of Seismic Waves on Structures. 

Ling Tonghua, Li Xibing. 2004. Laws of energy distribution in different frequency bands for blast vibration... 

Zhao Mingsheng, Liang Kaishui, Luo Yuanfang. 2011. Application of EEMD in Blasting Vibration Signal De-noising. Blasting, 28(2) 17-20+59. 

Sensitivity to the disturbed stress and environment change When the deep soft rock tunnels are closed to the excavation, water erosion, blast vibration and mining effect, the surrounding rock can see a rapid rise in its deformation and failure. 

It was required to measure the blast vibrations in the near-field as well as far-field zones with respect to blast site to assess the rock mass damage. Therefore a room of about 0.5m (lmxlmx0.5m) was excavated inside the sidewall for installation... 

Dowding, C. H. (1985). Blast Vibration monitoring. Englewood Cliffs NJ Prentice Hall. 

Observations from blast vibration monitoring and hanging-wall instrumentation, (Henning Mitri, 1999), and from modelling of rock mass... 

Table 2. Calculated blast vibration site constants...

Figure 11. Hanging-wall blast vibration attenuation. AN-FO explosive population 100 kg charge, located in blastholes 2.5 m from hanging-wall contact...

Development of a New Blast Vibration Prediction Model Incorporating Burden Variations in Surface Blasting... 

Ambraseys and Hendron (1968) found that the value of a is 1/2 for all surface blast vibration attenuations. The value of p ean be adjusted as 1.6 as it satisfies the attenuation eharacteristics of most ofthe rock types (MeKenzie, 1993 Konya,... 

Crum, S. V., Siskind, D. E., Eltschlager, K. (1997). Blast vibration measurements at far distances and design influences on ground vibrations. InProceedings of Annual conference on Explosives and blasting research, explosives reference database on CD-ROM. Montville, OH International society of explosive engineers. 

Raina, A. K., Ramulu, M., Chakraborty, A. K., Choudhuiy, P. B., Bandopadhay, C. (2004). Monitoring and control of blast vibrations in dragline bench ofSasti OCP, WCL (pp. 2-10). Unpublished CMRI internal Report. 

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