CN102116156A - Slope expansion and blasting method for mining deep concave open-pit mine by stages - Google Patents
Slope expansion and blasting method for mining deep concave open-pit mine by stages Download PDFInfo
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- CN102116156A CN102116156A CN2010101572758A CN201010157275A CN102116156A CN 102116156 A CN102116156 A CN 102116156A CN 2010101572758 A CN2010101572758 A CN 2010101572758A CN 201010157275 A CN201010157275 A CN 201010157275A CN 102116156 A CN102116156 A CN 102116156A
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Abstract
The invention relates to a slope expansion and blasting method for mining a deep concave open-pit mine by stages. The method comprises the following steps: sequentially performing hole distribution design of deep holes, perforation construction, setting of primer detonators in the deep holes and the construction of charging explosive in the deep holes, performing time delay detonation design of the detonators in a surface network, connecting the detonators in blast holes with the detonators in the surface network, and detonating, and the method is characterized in that, under the condition that the width of the slope expansion part is greater than 20 meters, the hole distribution design of the deep holes is used for designing the blast holes in a control row of a blasting area to be vertical to a bench crest of a main stope, the time delay detonation design of the detonators in the surface network is used for designing the detonation sequence to hole-by-hole differential detonation, and the time delay detonation design of the detonators in the surface network is used for designing delay time of the detonators to enable the inter-hole detonator time delay to be shorter than the inter-row detonator time delay. Under the condition that the width of the slope expansion part is smaller than 20 meters, the hole distribution design of the deep holes is used for designing the blast holes in the control row of the blasting area to be parallel to the bench crest of the main stope, and the time delay design of the detonator is used for designing the delay time of the detonators to enable the inter-hole detonator time delay to be longer than the inter-row detonator time delay. The method is strong in operability, safe, practical and reliable.
Description
Technical field
The invention belongs to surface mining deep hole blasting technology field, group's blasting method is expanded in particularly a kind of deep open pit mining by stages.
Background technology
At present, domestic surface mine expands in group's explosion in mining by stages, and generally the blasting method of Cai Yonging is deep hole blasting, and control artillery salvo hole, blast area is parallel to main stope bench crest, and firing order is a millisecond detonating scheme between oblique line elementary errors and V-type row.Quick-fried heap preshoot was bigger to operation area, its underpart influence when there was explosion in these blasting methods, the safety that jeopardizes the equipment and the transportation route of operation area, its underpart.These problems when expanding group in order to solve, the scheme of reserving dike or staying the temporary transient not explosion of platform of certain width commonly used, and this expansion group blasting scheme is very big to the tissue influence that produces, and greatly reduces the production efficiency of power shovel simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of deep open pit mining by stages to expand group's blasting method, can effectively control quick-fried heap moving direction, reduce explosion preshoot distance significantly, reach and guarantee that the deep open pit mining by stages expands safe, the purpose efficiently of group's explosion.
The present invention seeks to realize by following technical proposals:
Group's blasting method is expanded in a kind of deep open pit mining by stages of the present invention, comprise carry out deep hole cloth hole design, perforation construction, primer detonator be set in the deep hole hole, the construction of deep hole blasting charge, carry out face of land network detonator time-delay detonate design, detonator in the hole, big gun hole is connected, detonates with face of land network detonator, it is characterized in that expansion help the position width greater than 20 meters condition under:
1) in the design of described deep hole cloth hole, artillery salvo hole is controlled in the blast area is designed to perpendicular to main stope bench crest,
2) in design is detonated in network detonator time-delay in the described face of land, firing order is designed to by the hole millisecond detonating,
3) in design is detonated in network detonator time-delay in the described face of land, with detonator time-delay between the detonator time-delay row of being shorter than between detonator delay time design pore-forming.
The pattern of described deep hole cloth hole design is square, rectangle or triangle.
The aperture of described deep hole cloth hole design is 100-310mm, and pitch-row is 7.5m, and array pitch is 7.5m, and hole depth is 15m.
The design that primer detonator adopts time-delay 400ms is set in the described deep hole hole.
The detonator time-delay is 9ms~65ms between described hole, and the detonator time-delay is 17ms~100ms between described row.
Group's blasting method is expanded in a kind of deep open pit mining by stages, comprise carry out deep hole cloth hole design, perforation construction, primer detonator be set in the deep hole hole, the construction of deep hole blasting charge, carry out face of land network detonator time-delay detonate design, detonator in the hole, big gun hole is connected, detonates with face of land network detonator, it is characterized in that expansion help the position width less than 20 meters condition under:
1) in the design of described deep hole cloth hole, artillery salvo hole is controlled in the blast area is designed to be parallel to main stope bench crest,
2) in design is detonated in network detonator time-delay in the described face of land, firing order is designed to by the hole millisecond detonating,
3) in design is detonated in network detonator time-delay in the described face of land, with detonator time-delay between the detonator time-delay row of being longer than between detonator delay time design pore-forming.
The pattern of described deep hole cloth hole design is square, rectangle or triangle.
The aperture of described deep hole cloth hole design is 100-310mm, and pitch-row is 7.5m, and array pitch is 7.5m, and hole depth is 15m.
The design that primer detonator adopts time-delay 400ms is set in the described deep hole hole.
The detonator time-delay is 17ms~100ms between described hole, and the detonator time-delay is 9ms~65ms between described row.
Deep open pit mining by stages of the present invention is expanded group's blasting method and is had following advantage:
1, workable, safe, practical, reliable;
2, in expanding group's explosion, do not stay the back quick-fried platform of reserving dike or not staying certain width, improved blasting quality;
3, can effectively control quick-fried heap moving direction, reduce explosion preshoot distance significantly, reduce the influence of explosion stope bottom production and transport circuit;
4, improve shovel dress efficient, expanded group's fltting speed when having accelerated the mining by stages transition, guaranteed the lasting and stable of mine capacity.
Description of drawings
Fig. 1 is the network detonator time-delay plan that detonates in the face of land during greater than 20 meters for expansion of the present invention group position width.
Fig. 2 is the network detonator time-delay plan that detonates in the face of land during less than 20 meters for expansion of the present invention group position width.
The specific embodiment
Given embodiment further specifies the specific embodiment of the present utility model below in conjunction with accompanying drawing.
As shown in Figure 1, A is main stope bench crest among the figure, and B is control artillery salvo hole, and 1 be fire point, and the numeral in the square frame is the time of time-delay, and the numeral on circle side is a firing order number.
Expand group's position width greater than 20 meters condition under, group's blasting method is expanded in a kind of deep open pit mining by stages, comprise carry out deep hole cloth hole design, perforation construction, primer detonator be set in the deep hole hole, the construction of deep hole blasting charge, carry out face of land network detonator time-delay detonate design, detonator in the hole, big gun hole is connected, detonates with face of land network detonator, it is characterized in that:
1) in described deep hole cloth hole design, artillery salvo hole B is controlled in the blast area be designed to perpendicular to main stope bench crest A, the pattern of deep hole cloth hole design is square, rectangle or triangle, its aperture is 100-310mm, pitch-row is 7.5m, and array pitch is 7.5m, and hole depth is 15m.Because the scope of freedom of quick-fried heap side is bigger, can make full use of the compensation space of its side, more help moving of quick-fried heap rock.
2) in design is detonated in network detonator time-delay in the described face of land, firing order is designed to by the hole millisecond detonating, its demolition effect is good.
3) in design is detonated in network detonator time-delay in the described face of land, with detonator time-delay between the detonator time-delay row of being shorter than between detonator delay time design pore-forming, the detonator time-delay is 9ms~65ms between the hole, and the detonator time-delay is 17ms~100ms between row.The design that primer detonator adopts time-delay 400ms is set in the deep hole hole.Quick-fried heap is moved along being parallel to main stope bench crest direction, reduce its preshoot distance perpendicular to the bench crest direction.
As shown in Figure 2, expand group's position width less than 20 meters condition under, group's blasting method is expanded in a kind of deep open pit mining by stages, comprise carry out deep hole cloth hole design, perforation construction, primer detonator be set in the deep hole hole, the construction of deep hole blasting charge, carry out face of land network detonator time-delay detonate design, detonator in the hole, big gun hole is connected, detonates with face of land network detonator, it is characterized in that:
1) in described deep hole cloth hole design, artillery salvo hole B is controlled in the blast area be designed to be parallel to main stope bench crest A, the pattern of deep hole cloth hole design is square, rectangle or triangle, its aperture is 100-310mm, pitch-row is 7.5m, and array pitch is 7.5m, and hole depth is 15m.Because the scope of freedom of its side is less; available side compensation space is less; therefore can only adopt the scheme of control platoon leader time-delay; quick-fried heap is moved along being parallel to main stope bench crest direction; reduce preshoot distance, the equipment of protection operation area, bottom, blast area and the safety of transportation route perpendicular to main stope bench crest.
2) in design is detonated in network detonator time-delay in the described face of land, firing order is designed to by the hole millisecond detonating, its demolition effect is good.
3) in design is detonated in network detonator time-delay in the described face of land, with detonator time-delay between the detonator time-delay row of being longer than between detonator delay time design pore-forming, the detonator time-delay is 17ms~100ms between the hole, and the detonator time-delay is 9ms~65ms between row.The design that primer detonator adopts time-delay 400ms is set in the deep hole hole.Quick-fried heap is moved along being parallel to main stope bench crest direction, reduce its preshoot distance perpendicular to main stope bench crest direction.
Embodiment 1:
Expand group's position width greater than 20 meters condition under, adopt a kind of deep open pit mining by stages to expand group's blasting method, comprise carry out deep hole cloth hole design, perforation construction, primer detonator be set in the deep hole hole, the construction of deep hole blasting charge, carry out face of land network detonator time-delay detonate design, detonator in the hole, big gun hole is connected, detonates with face of land network detonator, it is characterized in that:
1) in the design of described deep hole cloth hole, artillery salvo hole B is controlled in the blast area be designed to perpendicular to main stope bench crest A, the cloth hole of shot hole is 5 rows, 6 row.The aperture of deep hole cloth hole design is 200mm, and pitch-row is 7.5m, and array pitch is 7.5m, and hole depth is 15m.
2) in design is detonated in network detonator time-delay in the described face of land, firing order is designed to by the hole millisecond detonating.
3) in design is detonated in network detonator time-delay in the described face of land, with detonator time-delay between the detonator time-delay row of being shorter than between detonator delay time design pore-forming, the detonator time-delay is 9ms between the hole, and the detonator time-delay is 42ms between row, and the design that primer detonator adopts time-delay 400ms is set in the deep hole hole.
Embodiment 2:
Expand group's position width less than 20 meters condition under, adopt a kind of deep open pit mining by stages to expand group's blasting method, comprise carry out deep hole cloth hole design, perforation construction, primer detonator be set in the deep hole hole, the construction of deep hole blasting charge, carry out face of land network detonator time-delay detonate design, detonator in the hole, big gun hole is connected, detonates with face of land network detonator, it is characterized in that:
1) in the design of described deep hole cloth hole, artillery salvo hole B is controlled in the blast area be designed to be parallel to main stope bench crest A, the cloth hole of shot hole is 3 rows, 10 row.The aperture of deep hole cloth hole design is 200mm, and pitch-row is 7.5m, and array pitch is 7.5m, and hole depth is 15m.
2) in design is detonated in network detonator time-delay in the described face of land, firing order is designed to by the hole millisecond detonating.
3) in design is detonated in network detonator time-delay in the described face of land, with detonator time-delay between the detonator time-delay row of being longer than between detonator delay time design pore-forming, the detonator time-delay is 42ms between the hole, and the detonator time-delay is 9ms between row, and the design that primer detonator adopts time-delay 400ms is set in the deep hole hole.
The present invention under the bigger and less situation in the scope of freedom, side, can effectively control the moving direction of quick-fried heap respectively, reduces its preshoot distance perpendicular to main stope bench crest direction, guarantees the equipment of operation area, bottom, blast area and the safety of transportation route.Improve shovel dress efficient, guaranteed the lasting and stable of mine capacity.It is workable, and is safe, practical, reliable.
Claims (10)
1. group's blasting method is expanded in a deep open pit mining by stages, comprise carry out deep hole cloth hole design, perforation construction, primer detonator be set in the deep hole hole, the construction of deep hole blasting charge, carry out face of land network detonator time-delay detonate design, detonator in the hole, big gun hole is connected, detonates with face of land network detonator, it is characterized in that expansion help the position width greater than 20 meters condition under:
1) in the design of described deep hole cloth hole, artillery salvo hole is controlled in the blast area is designed to perpendicular to main stope bench crest,
2) in design is detonated in network detonator time-delay in the described face of land, firing order is designed to by the hole millisecond detonating,
3) in design is detonated in network detonator time-delay in the described face of land, with detonator time-delay between the detonator time-delay row of being shorter than between detonator delay time design pore-forming.
2. group's blasting method is expanded in deep open pit mining by stages according to claim 1, and the pattern that it is characterized in that the design of described deep hole cloth hole is square, rectangle or triangle.
3. group's blasting method is expanded in deep open pit mining by stages according to claim 1, it is characterized in that the aperture of described deep hole cloth hole design is 100-310mm, and pitch-row is 7.5m, and array pitch is 7.5m, and hole depth is 15m.
4. group's blasting method is expanded in deep open pit mining by stages according to claim 1, it is characterized in that being provided with in the described deep hole hole design that primer detonator adopts time-delay 400ms.
5. group's blasting method is expanded in deep open pit mining by stages according to claim 1, it is characterized in that the detonator time-delay is 9ms~65ms between described hole, and the detonator time-delay is 17ms~100ms between described row.
6. group's blasting method is expanded in a deep open pit mining by stages, comprise carry out deep hole cloth hole design, perforation construction, primer detonator be set in the deep hole hole, the construction of deep hole blasting charge, carry out face of land network detonator time-delay detonate design, detonator in the hole, big gun hole is connected, detonates with face of land network detonator, it is characterized in that expansion help the position width less than 20 meters condition under:
1) in the design of described deep hole cloth hole, artillery salvo hole is controlled in the blast area is designed to be parallel to main stope bench crest,
2) in design is detonated in network detonator time-delay in the described face of land, firing order is designed to by the hole millisecond detonating,
3) in design is detonated in network detonator time-delay in the described face of land, with detonator time-delay between the detonator time-delay row of being longer than between detonator delay time design pore-forming.
7. group's blasting method is expanded in deep open pit mining by stages according to claim 6, and the pattern that it is characterized in that the design of described deep hole cloth hole is square, rectangle or triangle.
8. group's blasting method is expanded in deep open pit mining by stages according to claim 6, it is characterized in that the aperture of described deep hole cloth hole design is 100-310mm, and pitch-row is 7.5m, and array pitch is 7.5m, and hole depth is 15m.
9. group's blasting method is expanded in deep open pit mining by stages according to claim 6, it is characterized in that being provided with in the described deep hole hole design that primer detonator adopts time-delay 400ms.
10. group's blasting method is expanded in deep open pit mining by stages according to claim 6, it is characterized in that the detonator time-delay is 17ms~100ms between described hole, and the detonator time-delay is 9ms~65ms between described row.
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Cited By (6)
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CN102927866A (en) * | 2012-11-16 | 2013-02-13 | 鞍钢集团矿业公司 | Open-bench blasting method capable of controlling forward stroke of blasting muck pile |
WO2014026603A1 (en) * | 2012-08-17 | 2014-02-20 | 北京北方邦杰科技发展有限公司 | Application method of digital electronic detonator |
CN105333777A (en) * | 2015-11-10 | 2016-02-17 | 攀钢集团矿业有限公司 | Ditching blasting method for deep open pit mine |
CN105444630A (en) * | 2015-11-10 | 2016-03-30 | 攀钢集团矿业有限公司 | Presplit hole explosion device and explosion device |
CN110595308A (en) * | 2019-09-20 | 2019-12-20 | 鞍钢集团矿业有限公司 | Method for treating goaf by ultra-deep hole blasting of strip mine |
CN113654424A (en) * | 2021-09-02 | 2021-11-16 | 攀钢集团矿业有限公司 | New horizontal ditching method for deep open pit mine |
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Publication number | Priority date | Publication date | Assignee | Title |
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WO2014026603A1 (en) * | 2012-08-17 | 2014-02-20 | 北京北方邦杰科技发展有限公司 | Application method of digital electronic detonator |
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CN102927866B (en) * | 2012-11-16 | 2014-11-05 | 鞍钢集团矿业公司 | Open-bench blasting method capable of controlling forward stroke of blasting muck pile |
CN105333777A (en) * | 2015-11-10 | 2016-02-17 | 攀钢集团矿业有限公司 | Ditching blasting method for deep open pit mine |
CN105444630A (en) * | 2015-11-10 | 2016-03-30 | 攀钢集团矿业有限公司 | Presplit hole explosion device and explosion device |
CN105444630B (en) * | 2015-11-10 | 2017-10-24 | 攀钢集团矿业有限公司 | Pre- ceasma demolition set and demolition set |
CN110595308A (en) * | 2019-09-20 | 2019-12-20 | 鞍钢集团矿业有限公司 | Method for treating goaf by ultra-deep hole blasting of strip mine |
CN110595308B (en) * | 2019-09-20 | 2022-02-18 | 鞍钢集团矿业有限公司 | Method for treating goaf by ultra-deep hole blasting of strip mine |
CN113654424A (en) * | 2021-09-02 | 2021-11-16 | 攀钢集团矿业有限公司 | New horizontal ditching method for deep open pit mine |
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Application publication date: 20110706 |