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Determination of blast-induced ground vibration equations for rocks using mechanical and geological properties

https://doi.org/10.1016/j.jrmge.2015.10.009Get rights and content
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Abstract

In the recent decades, effects of blast loads on natural and man-made structures have gained considerable attention due to increase in threat from various man-made activities. Site-specific empirical relationships for calculation of blast-induced vibration parameters like peak particle velocity (PPV) and peak particle displacement (PPD) are commonly used for estimation of blast loads in design. However, these relationships are not able to consider the variation in rock parameters and uncertainty of in situ conditions. In this paper, a total of 1089 published blast data of various researchers in different rock sites have been collected and used to propose generalized empirical model for PPV by considering the effects of rock parameters like unit weight, rock quality designation (RQD), geological strength index (GSI), and uniaxial compressive strength (UCS). The proposed PPV model has a good correlation coefficient and hence it can be directly used in prediction of blast-induced vibrations in rocks. Standard errors and coefficient of correlations of the predicted blast-induced vibration parameters are obtained with respect to the observed field data. The proposed empirical model for PPV has also been compared with the empirical models available for blast vibrations predictions given by other researchers and found to be in good agreement with specific cases.

Keywords

Blast loads
Empirical equations
Rock quality designation (RQD)
Unit weight
Peak particle velocity (PPV)
Uniaxial compressive strength (UCS)
Geological strength index (GSI)

Cited by (0)

Dr. Ranjan Kumar is working as Scientific Officer/F at Civil Engineering Division, Bhabha Atomic Research Center, Mumbai, India. His research interests cover geotechnical engineering, soil mechanics, constitutive modeling, soil dynamics, foundations subjected to blast loads, etc. Contact information: Project Engineer (RK), Civil Engineering Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085, India. Tel.: +91 22 25593062 (O), +91 9869404519 (M). E-mail: [email protected]

Prof. Dr. Deepankar Choudhury is working as Professor at Department of Civil Engineering, Indian Institute of Technology (IIT) Bombay, Mumbai, India and Adjunct Professor of Academy of CSIR (AcSIR), New Delhi and connected to CSIR-CBRI Roorkee, India. His research interests cover earthquake geotechnical engineering, dynamic soil-structure interaction problems, computational geomechanics, foundation engineering, numerical and analytical modeling of geotechnical structures, soil dynamics, etc. He is an Alexander von Humboldt Fellow of Germany, JSPS Fellow of Japan, TWAS-VS Fellow of Italy and BOYSCAST Fellow of India who is serving as technical expert in various international organizations and editorial board member of various reputed journals like Canadian Geotechnical Journal, International Journal of Geomechanics ASCE, Indian Geotechnical Journal, Disaster Advances etc. Contact information: Professor, Department of Civil Engineering, Indian Institute of Technology Bombay, Powai, Mumbai – 400076, India. Tel.:+91 22 25767335(O), +91 22 27568335(R); fax: +91-22-25767302. E-mail: [email protected]; [email protected]

Dr. Kapilesh Bhargava is working as Assistant General Manager at Nuclear Recycle Board, Bhabha Atomic Research Center, Mumbai, India and Associate Professor at Homi Bhabha National Institute, Mumbai, India. His research interests cover structural engineering, time-dependent degradation and reliability analysis of concrete structures, seismic fragility analysis, earthquake geotechnical engineering, soil-structure interaction, soil dynamics, seismic requalification and retrofitting of existing structures, etc. Contact information: Assistant General Manager, Nuclear Recycle Board, Bhabha Atomic Research Centre, Anushaktinagar, Mumbai-400094, India, Tel.: +91 22 25597999(O), +91 22 25571995(R); fax: +91 22 25555118. E-mail: [email protected]; [email protected]

Peer review under responsibility of Institute of Rock and Soil Mechanics, Chinese Academy of Sciences.

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