SU1417577A1 - Method of contour rock mass blasting - Google Patents
Method of contour rock mass blastingInfo
- Publication number
- SU1417577A1 SU1417577A1 SU4076345/03A SU4076345A SU1417577A1 SU 1417577 A1 SU1417577 A1 SU 1417577A1 SU 4076345/03 A SU4076345/03 A SU 4076345/03A SU 4076345 A SU4076345 A SU 4076345A SU 1417577 A1 SU1417577 A1 SU 1417577A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- boreholes
- charges
- borehole
- blasted
- blasting
- Prior art date
Links
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
FIELD: blasting. SUBSTANCE: contiguous boreholes 1 are drilled in the plane of the design contour, they serve as a nucleus of the system and are spaced at a = (2-5) d,, where d-diameter of borehole 1. The number of boreholes 1 is determined by formula N= a/d+1+1. Then boreholes 2 and 3 are drilled, they are spaced at b=10-25 b = 10-25 d.. Boreholes 1 through 3 are loaded with explosive charges. Detonating cords 5 are laid from main line 4 to each charge in borehole 1, the other charges are connected through detonating cords 6,7. Charges in boreholes 1 through 3 are blasted. Detonation wave through line 4 passes on to detonating cord 5, as a result, first the charges in borehole 1 are blasted simultaneously. A crack is formed in the vicinity of borehole 1. After the last boreholes 2,3 are reached, after time interval τ≥ b/v, c,, where b-distance between boreholes, m; V rock mass surface velocity m/s, boreholes 2,3 are blasted. EFFECT: reduced cost of blasting and improved directivity of action of explosive charges. 2 dwg
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU4076345/03A SU1417577A1 (en) | 1986-06-12 | 1986-06-12 | Method of contour rock mass blasting |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU4076345/03A SU1417577A1 (en) | 1986-06-12 | 1986-06-12 | Method of contour rock mass blasting |
Publications (1)
Publication Number | Publication Date |
---|---|
SU1417577A1 true SU1417577A1 (en) | 1995-10-10 |
Family
ID=60536074
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU4076345/03A SU1417577A1 (en) | 1986-06-12 | 1986-06-12 | Method of contour rock mass blasting |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU1417577A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2312299C1 (en) * | 2006-03-16 | 2007-12-10 | Государственное образовательное учреждение высшего профессионального образования "Тихоокеанский государственный университет" | Contour charge with thrust stemming |
-
1986
- 1986-06-12 SU SU4076345/03A patent/SU1417577A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2312299C1 (en) * | 2006-03-16 | 2007-12-10 | Государственное образовательное учреждение высшего профессионального образования "Тихоокеанский государственный университет" | Contour charge with thrust stemming |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4248303A (en) | Explosive well-fracturing system | |
CN106440981B (en) | Improve the deep hole blasting method of bulk yield in developmental joint fissure granite mine | |
CN114111478B (en) | Detonating circuit combining electronic detonator and detonating cord and construction method thereof | |
DE69906028D1 (en) | ENTER THE DELAYS FOR A DETONATION SEQUENCE | |
SU1417577A1 (en) | Method of contour rock mass blasting | |
ES449723A1 (en) | Method of underground mining | |
RU97100449A (en) | EXPLOSION METHOD | |
Manoj et al. | Electronic Delay Detonators-Benefits & growth prospects in India | |
RU2055303C1 (en) | Process of blast breaking of rocks with stratified texture in stripping | |
RU2101673C1 (en) | Method of explosive breaking of broken-up rock mass at breaking onto basset | |
SU1430719A1 (en) | Method of initiating snake charges | |
RU2133010C1 (en) | Process of breaking of mineral resources | |
CN115585713B (en) | Digital electronic detonator and detonating cord fused shaft tunneling delay detonating circuit | |
RU2059070C1 (en) | Method for making kerf cavity | |
SU1343930A1 (en) | Method of breaking down rock in quarries | |
RU2039248C1 (en) | Method for preparation of rock mass by blasting for leaching in squeezed medium | |
SU1455826A1 (en) | Method for loosening solid rock by blasting | |
SU1689643A1 (en) | Method for prevention of rock bursts | |
RU2184928C1 (en) | Method for conducting of drilling and blasting operations | |
RU1774156C (en) | Method of breaking down rocks | |
RU2263278C1 (en) | Method of blast ore breaking off mass of laminated texture (versions) | |
SU1666732A1 (en) | Method of raise driving | |
SU1052020A1 (en) | Method of breaking rock | |
SU804833A1 (en) | Method of forming a cut-in cavity | |
SU817261A1 (en) | Method of controlling a solid roof |