SU829929A1 - Method of breaking-off a rock block - Google Patents
Method of breaking-off a rock block Download PDFInfo
- Publication number
- SU829929A1 SU829929A1 SU772471504A SU2471504A SU829929A1 SU 829929 A1 SU829929 A1 SU 829929A1 SU 772471504 A SU772471504 A SU 772471504A SU 2471504 A SU2471504 A SU 2471504A SU 829929 A1 SU829929 A1 SU 829929A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- fans
- block
- drilled
- workings
- wells
- Prior art date
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- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Description
Изобретение относитс к горной промышленности и может быть использовано при подземной разработке полезных ископаемых. Известен способ отбойки горных пород путем взрывани зар дов в веерах скважин fl . Недостатком способа вл етс неравномерность дроблени горных пород и значительный удельный объем буровых работ. Наиболее близким к изобретению по технической сущности вл етс сп соб отбойки блока горных пород при подземной разработке путем взрывани зар дов в веерах скважин, пройденны из смежных выработок 12. Однако данный способ характеризу етс повышенным удельным объемом бу рени из-за необходимости соблюдени расчетных рассто ний между забо ми скважин. Кроме того, повышенна кон центраци зар дов вблизи выработок обуславливает неравномерность дробл ни пород и повышенный удельный расход взрывчатого вещества (вв). Цель изобретени - сокращение удельного объема буровых работ и удельного расхода ВВ за счет равномерного распределени его по отбиваемому блоку. Поставленна цель достигаетс тем, что в способе отбойки блока горных пород при подземной разработке путем взрывани зар дов в веерах скважин, пройденных из смежных выработок, плоскости вееров пробурены со смещением относительно друг друга по длине выработок, причем скважины в каж- . дом веере пройдены до наружной границы блока. На фиг. 1 схематически представлено расположение буровых выработок и скважин; иа фиг. 2 - расположение вееров, план. Из смежных выработок 1 и 2 бур т веера 3 и 4 скважин 5. Плоскости вееров 3 и 4 параллельны и смещены относительно друг друга по длине выработок 1 и 2 еер 3 опережает аеер 4 или наоборот). В направлении противосто щей выработкам 1 и 2 стороны отбиваемого блока скважины 5 вееров 3 и 4 бур т до границы последнего. Така схема расположени вееров сквазкин позвол ет увеличить рассто ние между забо ми скважин в каждом веере. Это обеспечивает, несмотр иа увеличение длины скважин в веерах.The invention relates to the mining industry and can be used in the underground mining of minerals. The known method of rock blasting by blasting charges in the well fans fl. The disadvantage of this method is the uneven crushing of rocks and a significant specific volume of drilling. The closest to the invention to the technical essence is the method of cutting rock block during underground mining by blasting charges in fans of wells passed from adjacent workings 12. However, this method is characterized by an increased specific volume of drilling due to the need to maintain calculation distances. between wellsholes. In addition, the increased concentration of charges near the workings causes uneven crushed rock and increased specific consumption of explosive (cc). The purpose of the invention is to reduce the specific volume of drilling operations and the specific consumption of explosives by distributing it evenly across the recovered block. The goal is achieved by the fact that in the method of blasting a block of rocks during underground mining by blasting charges in the fans of wells passed from adjacent workings, the planes of fans are drilled with displacement relative to each other along the length of the workings, and each well. house fan traversed to the outer boundary of the block FIG. 1 schematically shows the location of drilling workings and wells; FIG. 2 - the location of the fans, the plan. From adjacent openings 1 and 2, drills of fans 3 and 4 of bore holes 5. Planes of fans 3 and 4 are parallel and displaced relative to each other along the length of openings 1 and 2 (3 3 ahead of ayer 4 or vice versa). In the direction of the opposing openings 1 and 2 of the side of the flipped block, 5 fans 3 and 4 are drilled to the boundary of the latter. Such a arrangement of the squash fans allows for an increase in the distance between the downhole holes in each fan. This provides, despite the increase in the length of the wells in the fans.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772471504A SU829929A1 (en) | 1977-03-29 | 1977-03-29 | Method of breaking-off a rock block |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772471504A SU829929A1 (en) | 1977-03-29 | 1977-03-29 | Method of breaking-off a rock block |
Publications (1)
Publication Number | Publication Date |
---|---|
SU829929A1 true SU829929A1 (en) | 1981-05-15 |
Family
ID=20703095
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU772471504A SU829929A1 (en) | 1977-03-29 | 1977-03-29 | Method of breaking-off a rock block |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU829929A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4601518A (en) * | 1983-03-23 | 1986-07-22 | Jcc Johnson Construction Company Ab | Method of excavating rock caverns by blasting |
-
1977
- 1977-03-29 SU SU772471504A patent/SU829929A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4601518A (en) * | 1983-03-23 | 1986-07-22 | Jcc Johnson Construction Company Ab | Method of excavating rock caverns by blasting |
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