RU2002133299A - METHOD FOR OBTAINING A PRESENT DEGREE OF CRUSHING A CRACKED MOUNTAIN ARRAY WITH GROUP EXPLOSION OF EXPLOSIVE BORE CHARGES - Google Patents

METHOD FOR OBTAINING A PRESENT DEGREE OF CRUSHING A CRACKED MOUNTAIN ARRAY WITH GROUP EXPLOSION OF EXPLOSIVE BORE CHARGES

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RU2002133299A
RU2002133299A RU2002133299/03A RU2002133299A RU2002133299A RU 2002133299 A RU2002133299 A RU 2002133299A RU 2002133299/03 A RU2002133299/03 A RU 2002133299/03A RU 2002133299 A RU2002133299 A RU 2002133299A RU 2002133299 A RU2002133299 A RU 2002133299A
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Russia
Prior art keywords
explosive
array
size
crushing
charges
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RU2002133299/03A
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Russian (ru)
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RU2239783C2 (en
Inventor
Василий Афанасьевич Овсейчук
Владимир Николаевич Тюпин
Николай Петрович Фофанов
Original Assignee
Открытое акционерное общество "Приаргунское производственное горно-химическое объединение"
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Priority to RU2002133299/03A priority Critical patent/RU2239783C2/en
Priority claimed from RU2002133299/03A external-priority patent/RU2239783C2/en
Publication of RU2002133299A publication Critical patent/RU2002133299A/en
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Publication of RU2239783C2 publication Critical patent/RU2239783C2/en

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Claims (1)

Способ получения заданной степени дробления трещиноватого горного массива при групповом взрывании скважинных зарядов ВВ, включающий бурение групп взрывных скважин на расстоянии между ними, определенном из соотношения в зависимости от диаметра скважин, детонационных характеристик ВВ, физико-технических свойств массива, параметров его трещиноватости, размера кондиционного куска, их заряжание и короткозамедленное взрывание, отличающийся тем, что с учетом эффекта трения и горного давления расстояние между скважинами (концами скважин) в группе определяют из выраженияA method of obtaining a given degree of crushing of a fractured rock mass during group blasting of explosive bore charges, comprising drilling groups of blast holes at a distance between them, determined from the ratio depending on the diameter of the boreholes, detonation characteristics of the explosive, physicotechnical properties of the massif, parameters of its fracturing, and size of conditioned pieces, their loading and short-blown blasting, characterized in that, taking into account the effect of friction and rock pressure, the distance between the wells (well ends) in group is determined from the expression
Figure 00000001
Figure 00000001
 а расстояние между группами скважин из соотношенияand the distance between groups of wells from the ratio
Figure 00000002
Figure 00000002
 гдеWhere
Figure 00000003
Figure 00000003
 Rp - радиус зоны регулируемого дробления, в пределах которой размер крупных кусков не превышает кондиционного, м;R p is the radius of the zone of controlled crushing, within which the size of large pieces does not exceed the standard, m; D - скорость детонации ВВ, м/с;D — detonation velocity of explosives, m / s; ρВ - плотность заряжания, кг/м3;ρ V - loading density, kg / m 3 ; dЗ - диамер заряда ВВ, м;d З - diameter of explosive charge, m; с - скорость продольной волны в отдельности массива горных пород, м/с;C is the velocity of the longitudinal wave separately of the rock mass, m / s; ν - коэффициент Пуассона отдельности;ν is the Poisson's ratio of the individual; σР - предел прочности на разрыв отдельности, Па;σ P - ultimate tensile strength, Pa; μ - коэффициент трения между отдельностями в массиве;μ is the coefficient of friction between the elements in the array; Ф - показатель трещиноватости массива;F - an indicator of fracturing of the array; dе - размер отдельности массива, м;d e - the size of the individual array, m; Р - величина горного давления в месте взрывания, Па;P is the rock pressure at the blast site, Pa; dК - размер кондиционного куска, м;d K - the size of the conditioning piece, m; Кn⊥ - коэффициент усиления взрыва перпендикулярно плоскости группы одновременно взрываемых зарядов ВВ;K n⊥ is the explosion amplification factor perpendicular to the plane of the group of simultaneously explosive explosive charges; n* - предельное число зарядов ВВ, при котором наблюдается их взаимодействие.n * is the limiting number of explosive charges at which their interaction is observed.
RU2002133299/03A 2002-12-09 2002-12-09 Method for obtaining the preset degree of crushing of crumbling rock mass at group blasting of deep-hole explosive charges RU2239783C2 (en)

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2450242C1 (en) * 2010-09-13 2012-05-10 ЗАО "Нитро Сибирь" Method of blast-hole drilling ensuring preset extent of blast rock grinding
RU2485438C1 (en) * 2011-12-19 2013-06-20 Открытое акционерное общество Приаргунское производственное горно-химическое объединение Method for seam damage of cracked rocks

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