E3S Web Conf.
Volume 168, 2020II International Conference Essays of Mining Science and Practice
|Number of page(s)||6|
|Published online||06 May 2020|
The new approach in evaluating the mechanism of the blast effect and organizing the blasting operations while tunneling
Dnipro National University of Railway Transport named after Academician V. Lazaryan, Department of Bridges and Tunnels, 49010, Dnipro, Lazaryan Str., 2, Ukraine
2 LIMAK Office, 49000, Dnipro, Haharin Ave., 7, Ukraine
3 State Higher Educational Institution “Prydniprovska State Academy of Civil Engineering and Architecture”, 49600, Dnipro, Chernyshevskyi Str., 24-а, Ukraine
* Corresponding author: email@example.com
It is relevant for the organization of blasting operations with consideration to the mechanism of blast effect to justify new provisions due to the emergence of new explosives, means of initiating charges and instrumental measurement of parameters. In view of this, a new approach is needed for evaluating the mechanism of blast effect in the combined application of short-delay and delay-action blastings with a high level of organization and safety. Analyzing the results in the justification of the short-delayed blasting, obtained by many researchers in recent decades, its main advantages and some limitations in its evaluation have been identified. A clear justification for the combined application under seismic safety is provided. New results to explain the mechanism of the blast effect in the combined application of short-delay and delay-action blastings at tunneling facilities have been obtained. They help in the seismic action reduction under the conditions of close city development. Methodological approaches to organize blasting operations at complex facilities in Ukraine implemented during tunneling have been developed.
© The Authors, published by EDP Sciences, 2020
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