SU1182844A1 - METHOD PASSAGE OF MINING - Google Patents
METHOD PASSAGE OF MININGInfo
- Publication number
- SU1182844A1 SU1182844A1 SU3724238/03A SU3724238A SU1182844A1 SU 1182844 A1 SU1182844 A1 SU 1182844A1 SU 3724238/03 A SU3724238/03 A SU 3724238/03A SU 3724238 A SU3724238 A SU 3724238A SU 1182844 A1 SU1182844 A1 SU 1182844A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- diagonals
- holes
- rhombus
- vertices
- array
- Prior art date
Links
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
1. Способ проходки горных выработок, включающий разметку и бурение комплекта шпуров в вершинах вписанных правильных многоугольников и компенсационной скважины в точке пересечения их диагоналей, заряжание шпуров взрывчатым веществом и взрывание в установленной последовательности, отличающийся тем, что, с целью снижения удельных объемов бурения и взрывчатых материалов за счет размещения шпуров и очередности взрывания шпуровых зарядов с учетом напряженности в горном массиве, многоугольники размечают в виде ромбов, которые лежат в двух взаимно перпендикулярных плоскостях, проходящих через диагонали ромбов, одна из которых совпадает с направлением действия максимальных напряжений в массиве, а другая с направлением минимальных напряжений, большие диагонали предыдущего ромба являются меньшими диагоналями последующего, причем два первых шпура по порядку инициирования их шпуровых зарядов размещают на вершинах ромба с меньшей диагональю, направление которой совпадает с направлением действия максимальных напряжений в массиве.2. Способ по п.1, отличающийся тем, что удаление вершин ромба от пересечения диагоналей определяют из выражениягде D - длина противолежащей диагонали, м;d - диаметр шпуров, м;σвеличина предела прочности на сжатие нагруженного массива, МПа.1. The method of excavation of mine workings, including marking and drilling of a set of holes at the vertices of inscribed regular polygons and a compensation well at the intersection of their diagonals, loading the holes with an explosive and blasting in the prescribed sequence, characterized in that in order to reduce the specific volumes of drilling and explosive materials due to the placement of bore-holes and the sequence of blasting of blast-hole charges, taking into account the tension in the massif, polygons are marked in the form of diamonds, which lie in two The perpendicular planes passing through the diagonals of the rhombus, one of which coincides with the direction of the maximum stresses in the array, and the other with the direction of the minimum stresses, the larger diagonals of the previous rhombus are the smaller diagonals of the next, and the first two holes in the order of initiation of their blast-hole charges are placed on the vertices rhombus with a smaller diagonal, the direction of which coincides with the direction of the maximum stresses in the array.2. The method according to claim 1, characterized in that the removal of the rhombus vertices from the intersection of the diagonals is determined from the expression where D is the length of the opposite diagonal, m; d is the diameter of the holes, m; σ is the compressive strength of the loaded array, MPa.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU3724238/03A SU1182844A1 (en) | 1984-04-06 | 1984-04-06 | METHOD PASSAGE OF MINING |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU3724238/03A SU1182844A1 (en) | 1984-04-06 | 1984-04-06 | METHOD PASSAGE OF MINING |
Publications (1)
Publication Number | Publication Date |
---|---|
SU1182844A1 true SU1182844A1 (en) | 1999-09-20 |
Family
ID=60540654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU3724238/03A SU1182844A1 (en) | 1984-04-06 | 1984-04-06 | METHOD PASSAGE OF MINING |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU1182844A1 (en) |
-
1984
- 1984-04-06 SU SU3724238/03A patent/SU1182844A1/en active
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