NDLI: Blasting vibration characteristics and PPV calculation formula considering cylindrical charge length

Content Provider	Springer Nature Link
Author	Chen, Shihai Wu, Jian Zhang, Zihua
Copyright Year	2017
Abstract	The surrounding rock is divided into elastic zone and plastic zone according to the motion and deformation characteristics of medium in rock blasting. Cylindrical charge blasting vibration is framed based on past research related to blasting elastic–plastic theory, and the influence of detonation velocity on cylindrical blasting vibration is considered, especially for long charge length. A superposition model is used to calculate the vibration characteristics of long cylindrical charge blasting while considering the influence of charge length. The analysis results show that when the charge length reaches a certain length, the peak particle velocity (PPV) no longer increases with an increase in charge length, which is not consistent with the traditional theory for PPV calculation. In current practice, the calculation method for spherical charge blasting is used to calculate PPV values for a cylindrical charge. This approach, however, is inaccurate. As such, a new modified PPV calculation formula that considers the characteristics of cylindrical blasting is proposed in this paper after comparing with the spherical blasting PPV calculation method, and the influencing factor of charge length is introduced. The new PPV calculation formula can better characterize cylindrical charge blasting vibration attenuation laws.
Starting Page	1
Ending Page	12
Page Count	12
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	76
Issue Number	20
e-ISSN	18666299
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2017-10-12
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cylindrical charge Blasting vibration Particle peak velocity Charge length Geology Hydrology/Water Resources Geochemistry Environmental Science and Engineering Terrestrial Pollution Biogeosciences
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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