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

作　　者：Ranjan Kumar Deepankar Choudhury Kapilesh Bhargava 

机构地区：[1]Department of Civil Engineering,Indian Institute of Technology Bombay,Powai,Mumbai 400076,India [2]Civil Engineering Division,Bhabha Atomic Research Centre,Mumbai 400085,India [3]Academy of Scientific and Innovative Research(AcSIR),New Delhi,India [4]Nuclear Recycle Board,Bhabha Atomic Research Centre,Mumbai 400085,India [5]Homi Bhabha National Institute,Mumbai,India

出　　处：《Journal of Rock Mechanics and Geotechnical Engineering》2016年第3期341-349,共9页岩石力学与岩土工程学报（英文版）

摘　　要：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 relation- ships 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 （ROD）, 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.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 relation- ships 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 （ROD）, 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.

关 键 词：Blast loadsEmpirical equationsRock quality designation （RQD）Unit weightPeak particle velocity （PPV）Uniaxial compressive strength （UCS）Geological strength index （GSI） 

分 类 号：TU45[建筑科学—岩土工程]