Himanshu, Vivek Kumar and Mishra, A. K. and Vishwakarma, Ashish Kumar and Burgohain, John and Bhagat , Narayan Kumar (2025) Investigations on Influence of Physico-Mechanical Properties on Blast-Induced Ground Vibration Using Numerical Simulation and Physical Modeling. Rock Mechanics and Rock Engineering . ISSN 0723-2632

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Abstract

The propagation characteristics of blast-induced ground vibration have a paramount influence on the physico-mechanical properties. The study of the trend of variation of PPV with these properties enables the designers in proper designing of a blast. However, it is very difficult to assess these properties while conducting experiments at the blasting sites as the actual blasting sites have heterogeneity. So, physical and numerical modeling approaches have been used in this study. The physical models consisted of the concrete blocks of 1m3. These blocks were blasted using slurry cartridge explosives. The geophones were placed at a horizontal distance of 0.4 m and vertical distances of 0.35–0.5 m The replica of physical model was made in the numerical model. The variations were made in the charging position, charging quantity, density, moisture content, elastic modulus, compressive strength and tensile strength. The outcomes have been recorded as nearfield PPV. The outputs of the physical models were analyzed using multivariate statistical analysis. The analysis reveals that the numerical simulation-based results followed the similar trend as of the physical models. The major findings of the study suggest that the PPV in near field decreases exponentially with increasing distance. It follows Ghosh and Daemen (1983) predictor characteristics. The outcomes also suggest a strong correlation of PPV with the ratio of tensile strength to the elastic modulus. The developed numerical model of this study may be useful in determining the design parameters of a blast.

Item Type:	Article
Subjects:	Blasting
Divisions:	UNSPECIFIED
Depositing User:	Mr. B. R. Panduranga
Date Deposited:	16 Apr 2025 04:12
Last Modified:	16 Apr 2025 04:12
URI:	http://cimfr.csircentral.net/id/eprint/2771

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