Features of seismic explosive wave propagation in hard adjacent rock mass

The study of the influence of seismic explosions from blast on objects and structures mainly comes down to the use of the dependence ak. M.A. Sadovsky and determining the coefficients necessary for it from experimental data. Repeated measurements of seismic explosions waves can improve the reliability of predicted peak rock displacement velocities. The work shows that the behavior of seismic explosions waves from blast in the near and far zones is different. Moreover, to reduce the influence of the negative impact of blast on mass, it is the near zone that is of greatest interest. During the spectral analysis of seismic vibrations, it was established that in the near zone at a certain amplitude and low frequency, resonance of blocks of a certain hierarchical level is observed. Repeated repetition of such processes can lead to the gradual accumulation of cracks and the formation of local slope failure. It was also revealed that after blast, seismic events of various amplitudes occur within 5-6 seconds. This phenomenon may be associated with the peculiarities of the behavior of rock mass with a block structure and the inclusion of blocks of different hierarchical levels in the deformation process.

Afanasev P. I., Pavlovich A. A., Melnikov N. Ya., Nikolaev R. V. Features of seismic explosive wave propagation in hard adjacent rock mass. MIAB. Mining Inf. Anal. Bull. 2025;(1-1):17-32. [In Russ]. DOI: 10.25018/0236_1493_2025_11_0_17.

P.I. Afanasev¹, Cand. Sci. (Eng.), Assistant Professor, e-mail: Afanasev_PI@pers.spmi.ru,
A.A. Pavlovich¹, Cand. Sci. (Eng.), Head of Laboratory, e-mail: Pavlovich_AA@pers.spmi.ru,
N.Ya. Melnikov¹, Cand. Sci. (Eng.), Senior Researcher, e-mail: Melnikov_NYa@pers.spmi.ru,
R.V. Nikolaev, Chief Surveyor, Kirovsk branch of Apatit JSC, 184250, Kirovsk, Russia, e-mail: RNikolaev@phosagro.ru,
¹ Empress Catherine II Saint Petersburg Mining University, 199106, Saint Petersburg, Russia.

A.A. Pavlovich, e-mail: Pavlovich_AA@pers.spmi.ru.

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