Remez, N. S. and Boiko, V. V. and Dychko, А. О. and Hrebeniuk, T. V. and Bronytskyi, V. О. (2021) CONTROL OF THE VIBRATION SPECTRUM IN SOILS AND ROCKS BASED ON THE MATHEMATICAL SIMULATION OF SHORT-RELEASED EXPLOSIONS. Energy- and resource-saving technologies of developing the raw-material base of mining regions. pp. 173-185.

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Title in English

CONTROL OF THE VIBRATION SPECTRUM IN SOILS AND ROCKS BASED ON THE MATHEMATICAL SIMULATION OF SHORT-RELEASED EXPLOSIONS

English abstract

In this work, seismic-explosive waves are investigated on the basis of mathematical simulation of short-delayed explosion of a system of charges and effective and seismic-safe schemes are calculated. Numerical simulation of the explosion of a group of charges of cylindrical symmetry in a rock mass is carried out. During the development of the explosion, two stages are distinguished. At the first stage, the explosion of a cylindrical explosive charge in an unlimited soil mass is considered. The principle of superposition of fields is used in the study of explosions of two or more charges, while the influence of the intervals of deceleration and distribution of masses of charges within a group on the parameters of seismic-explosion waves is investigated. It is established that approximately the same stress state is achieved in the soil mass in the near and middle zones of the explosion, which is necessary for the destruction of the rock. The efficiency of application of the proposed schemes for mining in quarries is proved. At the second stage of solving the problem, an assessment of the total action of a short-delayed explosion of a system of cylindrical charges is made. The results of theoretical studies on the determination of the optimal short-delay detonation schemes depending on the distribution of masses within the group and the deceleration intervals are presented. The development of the method for calculating seismic vibrations based on mathematical modeling of a short-delayed explosion of a system of charges, which makes it possible to calculate wave parameters depending on the distribution of masses of charges within a group of deceleration intervals, is made and proved its effectiveness.

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