CN104989407A - Copper mine T-shaped cutting slot broaching method - Google Patents
Copper mine T-shaped cutting slot broaching method Download PDFInfo
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- CN104989407A CN104989407A CN201510314845.2A CN201510314845A CN104989407A CN 104989407 A CN104989407 A CN 104989407A CN 201510314845 A CN201510314845 A CN 201510314845A CN 104989407 A CN104989407 A CN 104989407A
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Abstract
The invention provides a copper mine T-shaped cutting slot broaching method capable of greatly reducing the construction amount. According to the technical scheme, the copper mine T-shaped cutting slot broaching method comprises the following steps that firstly, an ore block is layered, rock drilling roadways are constructed in all layers, and the rock drilling roadways in all the layers are aligned vertically; secondly, the position of a cutting well is determined at the ends of the rock drilling roadways, a small-section cutting well is constructed, the long axis direction of the small-section cutting well is identical with the recovery direction, sector medium and deep holes are upwards constructed in the two sides of the prepared cutting well, and it is ensured that at least two rows of deep holes cover the section of the cutting well; thirdly, cutting roadways identical with the ore block in width are constructed on the two sides of the end of the rock drilling roadway at the uppermost end to provide an upward free face for cutting slot broaching work, and a T-shaped structure is formed by the cutting roadway and the small-section cutting well; fourthly, detonation is carried out from top to bottom layer by layer, and an end cutting groove is formed. By means of the copper mine T-shaped cutting slot broaching method, the engineering amount is saved, the production cost is reduced, end losses are reduced, and the recovery ratio is increased.
Description
Technical field
The invention belongs to mining methods field, relate to a kind of copper mine "T"-shaped cutting kerve method.
Background technology
The cutting kerve technique employing cutting tunnel that copper mine is traditional and slot raise associating kerve method, as Figure 1-Figure 4, in driving cutting tunnel, ore limits place, end, slicing tunnel, according to the length of cutting gallery, and explosion need tunnel one or several slot raise in position, cutting tunnel in, upwards tie capable or scallop hole, be that the scope of freedom retreats explosion by row with slot raise, form cutting groove.This cutting groove method excavation work amount of drawing is more, and medium-length hole is great in constructing amount, and cost of production is high; Residual ore is arranged at top, both wings, and loss late is large; For the mining type leaving fore-set, cut aboveground to destructible roof pillar configuration during the explosion of end, subsequent recovery fore-set is impacted; Or easily there is continuously outstanding top phenomenon, cause the rate of extraction to reduce.
Summary of the invention
The present invention, for solving above technical problem, provides the copper mine that can greatly reduce construction volume "T"-shaped cutting kerve method.
Technical scheme: a kind of copper mine T-shaped cutting kerve method, comprises the steps: that 1. by nugget layering, each construction in layer drilling drift, the drilling drift consistency from top to bottom of each layering; 2. determine in drilling drift end that cutting well location is put, construction light section cutting well, light section cutting well long axis direction is consistent with mining direction, fan shaped medium length hole of upwards constructing in the cutting well both sides of drafting, and ensures to have at least two row's deep holes to cover in cutting wellblock; 3., in the cutting lane that both sides, drilling drift end construction is topmost consistent with nugget width, for the work of cutting kerve provides to the scope of freedom, cutting lane and light section cut well and form "T"-shaped structure; 4. last from top to bottom by layering explosion, form end cut groove.
Beneficial effect: do not construct and cut crosscut in slice drift end, only in the cutting lane that the construction of cutting aboveground end is vertical with cutting well direction, forms "T"-shaped cutting, and while centre cutting well provides the explosion scope of freedom, cutting lane, upper end also provides to the scope of freedom.The present invention both can save engineering quantity, reduced cost of production, can reduce blade-end loss again, improved the rate of extraction, and due to the existence to the scope of freedom on top, roof pillar configuration can be avoided to destroy.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view that tradition cutting kerve cutting well is arranged in side;
Fig. 2 is the vertical section figure that tradition cutting kerve cutting well is arranged in side;
Fig. 3 is the cross-sectional view that tradition cutting kerve cutting crosscut is arranged in side;
Fig. 4 is the vertical section figure that tradition cutting kerve cutting crosscut is arranged in side;
Fig. 5 is vertical section schematic diagram of the present invention;
Fig. 6 is the schematic cross-section of the multiple operating surface of the present invention;
Fig. 7 is that Fig. 6 I-I is to tunnel end sections schematic diagram;
Fig. 8 is blade-end loss place schematic diagram;
In figure, 1-slot raise, 2-layering drilling drift, 3-Slice by slice cutting lane, 4-pedestrian's shotfiring safety passage, 5-stope connecting taxiway, 6-studding, 7-drilling drift, 8-fore-set, 9-cut lane, 10-light section slot raise, 11-big gun hole, 12-pedestrian's vertical, 13 stope studdings, 14-stope, 15-blade-end loss place.
Detailed description of the invention
As seen in figs. 5-6, a kind of copper mine "T"-shaped cutting kerve method, comprises the steps: that 1. by nugget layering, each construction in layer drilling drift 7, the drilling drift consistency from top to bottom of each layering; 2. determine in drilling drift 7 end that cutting well location is put, construction light section cutting well 10, light section cutting well 10 long axis direction is consistent with mining direction, fan shaped medium length hole of upwards constructing in the cutting well both sides of drafting, and ensures to have at least two row's deep holes to cover in cutting wellblock; 3., in the cutting lane 9 that both sides, drilling drift 7 end construction is topmost consistent with nugget width, for the work of cutting kerve provides to the scope of freedom, cutting lane 9 is cut well 10 with light section and is formed "T"-shaped structure; 4. last from top to bottom by layering explosion, form end cut groove.
The present invention is directed to the otherness of copper mine and iron ore mining technology, in copper mine cutting kerve process, do not construct and cut crosscut in slice drift end, only in the horizontal tunnel that the construction of cutting aboveground end is vertical with cutting well direction, form "T"-shaped cutting, while centre cutting well provides the explosion scope of freedom, horizontal tunnel, upper end also provides to the scope of freedom.
Adopt this kind of cutting kerve method, can engineering quantity be saved on the one hand, reduce cost of production, such as, when miding level height is 60m, when fore-set is 10m, be divided into 5 layerings, count bottom drilling drift during construction in, traditional construction mode needs 6 layering end cut tunnels altogether; Employ new technology scheme, only need construction bottom and cut lane topmost, totally 2, that is: engineering quantity is 1/3 of conventional method, saves 2/3 engineering quantity (concrete save engineering quantity number and cost saving, determine according to mineral building width and construction unit price).Can blade-end loss be reduced on the other hand, improve the rate of extraction, and due to the existence to the scope of freedom on top, roof pillar configuration can be avoided to destroy.When miding level height is 60m, when fore-set is 10 m, cutting groove mean breadth is 3m, and strike length is 15m, if there are five layerings, is then calculated as follows:
Blade-end loss amount=0.73m2 × 15m × 5 × 3t/m3=164t;
Cutting groove ore total amount=50m × 3m × 15m × 3t/m3=6750t;
164/6750=2%；
That is: the cutting groove position rate of extraction improves about 2 percentage points.
Claims (1)
1. a copper mine T-shaped cutting kerve method, comprises the steps: 1) by nugget layering, each construction in layer drilling drift, the drilling drift consistency from top to bottom of each layering; 2) determine in drilling drift end that cutting well location is put, construction light section cutting well, light section cutting well long axis direction is consistent with mining direction, fan shaped medium length hole of upwards constructing in the cutting well both sides of drafting, and ensures to have at least two row's deep holes to cover in cutting wellblock; 3) in the cutting lane that both sides, drilling drift end construction is topmost consistent with nugget width, for the work of cutting kerve provides to the scope of freedom, cutting lane and light section cut well and form T-shaped structure; 4) last from top to bottom by layering explosion, form end cut groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510314845.2A CN104989407A (en) | 2015-06-10 | 2015-06-10 | Copper mine T-shaped cutting slot broaching method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510314845.2A CN104989407A (en) | 2015-06-10 | 2015-06-10 | Copper mine T-shaped cutting slot broaching method |
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| CN104989407A true CN104989407A (en) | 2015-10-21 |
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| CN201510314845.2A Pending CN104989407A (en) | 2015-06-10 | 2015-06-10 | Copper mine T-shaped cutting slot broaching method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113982586A (en) * | 2021-10-27 | 2022-01-28 | 湖南柿竹园有色金属有限责任公司 | Equal ratio dislocation pull groove and nonlinear directional control blasting stope pillar |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881169A (en) * | 2010-06-25 | 2010-11-10 | 东北大学 | Sublevel shrinkage caving stage open stope afterwards filling mining method |
| CN103527200A (en) * | 2013-10-25 | 2014-01-22 | 河北省矾山磷矿有限公司 | Sill-pillar-free sublevel rhombus room subsequent filling mining method |
| CN104481539A (en) * | 2014-12-05 | 2015-04-01 | 西安建筑科技大学 | Extruding blasting caving mining method for self-pulling slot |
| CN104594903A (en) * | 2014-11-19 | 2015-05-06 | 攀钢集团工程技术有限公司 | Ore breaking method for whole-section high combination rock drilling blasting |
-
2015
- 2015-06-10 CN CN201510314845.2A patent/CN104989407A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881169A (en) * | 2010-06-25 | 2010-11-10 | 东北大学 | Sublevel shrinkage caving stage open stope afterwards filling mining method |
| CN103527200A (en) * | 2013-10-25 | 2014-01-22 | 河北省矾山磷矿有限公司 | Sill-pillar-free sublevel rhombus room subsequent filling mining method |
| CN104594903A (en) * | 2014-11-19 | 2015-05-06 | 攀钢集团工程技术有限公司 | Ore breaking method for whole-section high combination rock drilling blasting |
| CN104481539A (en) * | 2014-12-05 | 2015-04-01 | 西安建筑科技大学 | Extruding blasting caving mining method for self-pulling slot |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113982586A (en) * | 2021-10-27 | 2022-01-28 | 湖南柿竹园有色金属有限责任公司 | Equal ratio dislocation pull groove and nonlinear directional control blasting stope pillar |
| CN113982586B (en) * | 2021-10-27 | 2023-11-10 | 湖南柿竹园有色金属有限责任公司 | Extraction method for blasting extraction ore column by means of geometric dislocation draw groove and nonlinear directional control |
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Application publication date: 20151021 |
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