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Математическое моделирование воздействия сейсмовзрывных волн на горный массив, включающий выработку

Mathematical modeling of seismic explosion waves impact on rock mass with a working
Authors: M. A. Zatsepin; Ya. N. Vykhodtsev; A. P. Gospodarikov;

Математическое моделирование воздействия сейсмовзрывных волн на горный массив, включающий выработку

Abstract

In the article, within the framework of the dynamic theory of elasticity, a mathematical model of the impact of seismic blast waves on rock mass is presented, including a working. The increase in the volume of mining operations in complex mining and geological conditions, taking into account the influence of the explosion energy, is closely connected with the analysis of the main parameters of the stress-strain state of the rock massif including a working. The latter leads to the need to determine the safe parameters of drilling and blasting operations that ensure the operational state of mining. The main danger in detonation of an explosive charge near an active working is a seismic explosive wave which characteristics are determined by the properties of soil and parameters of drilling and blasting operations. The determination of stress fields and displacement velocities in rock mass requires the use of a modern mathematical apparatus for its solution. For numerical solution of the given boundary value problem by the method of finite differences, an original calculation-difference scheme is constructed. The application of the splitting method for solving a two-dimensional boundary value problem is reduced to the solution of spatially one-dimensional differential equations. For the obtained numerical algorithm, an effective computational software has been developed. Numerical solutions of the model problem are given for the case when the shape of the working has a form of an ellipse.

В статье в рамках динамической теории упругости представлена математическая модель воздействия сейсмовзрывных волн на массив горных пород, включающий выработку. Увеличение объемов добычи по-лезных ископаемых в сложных горно-геологических условиях с учетом влияния энергии взрыва тесно связано с анализом основных параметров напряженно-деформированного состояния массива горных пород, включающего выработку. Последнее приводит к необходимости определения безопасных параметров бу-ровзрывных работ, обеспечивающих эксплуатационное состояния горной выработки. Основную опасность при взрыве заряда взрывчатого вещества вблизи действующей выработки представляет сейсмовзрывная волна, характеристики которой определяются свойствами грунта и параметрами буровзрывных работ. Определение полей напряжений и скоростей смещений в массиве горных пород требует привлечения для своего решения современного математического аппарата. Для численного решения поставленной краевой задачи методом конечных разностей авторами построена оригинальная расчетно-разностная схема. Применение метода расщепления для решения двухмерной краевой задачи сводится к решению пространственно одномерных дифференциальных уравнений. Для полученного численного алгоритма разработана эффективная вычислительная программа. Приведены численные решения модельной задачи для случая, когда форма горной выработки представлена эллипсом.

№4 (226) (2017)

Related Organizations
Keywords

Mining engineering. Metallurgy, математическая модель, TN1-997, численный алгоритм, difference scheme, сейсмовзрывная волна, горная выработка, mine working, numerical algorithm, разностная схема, seismic explosion wave, mathematical model

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    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Top 10%
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
10
Top 10%
Top 10%
Average
gold
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Energy Research