CN106895754B - A kind of cutting of inclined orebody is gone up a hill kerf blasting method - Google Patents
A kind of cutting of inclined orebody is gone up a hill kerf blasting method Download PDFInfo
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- CN106895754B CN106895754B CN201710104505.6A CN201710104505A CN106895754B CN 106895754 B CN106895754 B CN 106895754B CN 201710104505 A CN201710104505 A CN 201710104505A CN 106895754 B CN106895754 B CN 106895754B
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- cut
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of inclined orebodies to cut kerf blasting method of going up a hill, construction cutting carries out in two times when going up a hill, driling explosion driving is carried out to quasi- high side is adopted using angled cut using shallow bore hole drill jumbo first, the compensation space and the scope of freedom, reduction for increasing secondary blasting cut plagioclase of going up a hill；Then it reuses long and medium hole drilling trolley and cutting is carried out once through explosion using burn cut.The present invention can make inclined orebody cutting go up a hill just to be formed to cut by a shallow bore hole driling explosion and a long and medium hole drilling explosion and go up a hill, effectively reduce the security risk in the multiple shallow bore hole kerve operation process of conventional method, the equipment such as trolley, digging machine are solved during inclined orebody kerve since the ore body gradient is larger, without playing bottom, cannot directly be engaged in the problem of anchor net, rock drilling, scraping operation, to achieve the purpose that accelerate drawing speed, improve ore quality, reduce security risk.
Description
Technical field
The invention belongs to mining engineering fields, are related to a kind of method that inclined orebody cuts kerf blasting of going up a hill.
Background technique
Currently, in addition to minority is using chamber blasting, generally being collapsed using explosion in the recovery activity of non-coal underground mine
Mine technology.It is tilted, in the recovery process of gently inclined orebody in non-metal deposition mineral deposit, due to by factors such as safety, transports
Ore body division must be usually that mineral building unit carries out back production by limitation, and before mineral building back production, cut one it is identical as the slanting angle of ore body
Cutting groove it is most important to mineral building back production as the scope of freedom of back production explosion and ore reduction compensation space.
Mechanized mining equipment climbing capacity due to facing not yet mature, the domestic use of Trenching technology of medium-length hole has
Again therefore the difficulties such as between 30 °~55 ° under current technical status, are constructed in inclined orebody for limit, the inclined orebody gradient
A satisfied cutting groove need to usually pass through multiple explosion, play bottom repeatedly out, and causing ore quality to enterprise's production cannot protect
Card, that personnel equipment's efficiency is lower and security risk is prominent etc. is difficult.
Summary of the invention
It goes up a hill kerf blasting method the technical problem to be solved by the present invention is providing a kind of cutting of inclined orebody, raising is inclined
Oblique ore body cuts formation efficiency of going up a hill, and guarantees ore quality, increases construction personnel and equipment operation safety.
In order to achieve the above objectives, the present invention is realised by adopting the following technical scheme:
A kind of cutting of inclined orebody is gone up a hill kerf blasting method, cutting explosion of going up a hill is carried out in two times, first using shallow
Hole drill jumbo carries out development blasting to quasi- high side is adopted using angled cut, increase secondary blasting compensation space and the scope of freedom,
It reduces and cuts plagioclase of going up a hill；Then it reuses long and medium hole drilling trolley and cutting is carried out once through explosion using burn cut.
Further, the angled cut is V-cut.
Further, the burn cut is the big emptying aperture cutting method in tubular center.
Further, the wedge-shaped angled cut hole and blast plane angle in the horizontal direction are more than or equal to 80 °.
Further, there are two column, and each column the top, the lowermost wedge shape angled cut hole in the wedge-shaped angled cut hole
It is different from wedge-shaped angled cut hole topmost and between bottom and blast plane with the vertical direction angle of blast plane
Vertical direction angle.
The medium-length hole burn cut kerf blasting is suitable for inclination angle between 30 °~55 °, and layering height difference is less than or equal to
12m, plagioclase are less than or equal to 15m, and the wide cutting less than or equal to 6m of cutting is gone up a hill.
Further, the angled cut is provided with via hole, and the burn cut is provided with via hole, periphery hole.
Further, the angled cut and burn cut are blocked using continuous coupled powder charge, stemming, and dose is from slotting to auxiliary
It helps, the charging means that periphery is successively decreased.
Further, the angled cut and burn cut use short-delay blasting.
The present invention can make inclined orebody cutting go up a hill through a shallow bore hole driling explosion and a long and medium hole drilling explosion
It goes up a hill with regard to forming cutting, effectively reduces the security risk in the multiple shallow bore hole kerve operation process of conventional method, solve inclination
During ore body kerve the equipment such as trolley, digging machine due to the ore body gradient it is larger, without rise a bottom, cannot directly be engaged in anchor net, chisel
Rock, scraping operation problem, thus achieved the purpose that accelerate drawing speed, improve ore quality, reduce security risk.
Detailed description of the invention
Fig. 1 is mineral building cutting position diagram of the present invention；
Fig. 2 is angled cut and burn cut vertical direction diagrammatic cross-section of the present invention；
Fig. 3 is blast plane cloth hole schematic diagram in the face A-A of the present invention；
Fig. 4 is angled cut horizontal direction diagrammatic cross-section of the present invention；
Fig. 5 is blast plane cloth hole schematic diagram in the face B-B of the present invention；
1- angled cut hole；2- angled cut roof hole；3- angled cut bottom plate hole；4- angled cut via hole；5- is straight
The big emptying aperture in eye slotting center；6- burn cut keyhole；7- burn cut roof hole；8- burn cut bottom plate hole；The straight eye of 9- is drawn
Slot via hole；10- burn cut periphery hole.
Specific embodiment
Following examples further illustrate technical solution of the present inventions, but not as the limit to the scope of the present invention
It is fixed.
Referring to shown in Figure of description 1,2,3,4 and 5, inclined orebody of the invention cuts kerf blasting method of going up a hill and will cut
Explosion of going up a hill is cut to carry out in two times, first using shallow bore hole drill jumbo using angled cut hole 1 and angled cut roof hole 2, tiltedly
Eye slotting bottom plate hole 3, angled cut via hole 4 carry out development blasting to quasi- high side is adopted, increase secondary blasting compensation space and
The scope of freedom reduces and cuts plagioclase of going up a hill；Then it reuses long and medium hole drilling trolley and carries out rock drilling, utilize the big sky in burn cut center
Hole 5 further increases the broken space of rising of parallel cut blasting, reduces straight eye explosion minimum burden, using burn cut keyhole 6,
10 pairs of burn cut roof hole 7, burn cut bottom plate hole 8, burn cut via hole 9, burn cut periphery hole cuttings carry out one
It is secondary to run through explosion.
Specific implementation step is as follows:
Referring to shown in Figure of description 1, after mineral building adopts quasi- construction in place, cleavage is determined according to upper and lower hierarchical relational
It sets.
It referring to shown in Figure of description 2,3 and 4, is tunneled using shallow bore hole drill jumbo, carries out cloth eye, wedge in strict accordance with design
Shape angled cut hole 1 shares two column, is parallel to each other, and each column include 6 wedge-shaped angled cut holes 1, each wedge shape angled cut
Hole 1 and blast plane angle in the horizontal direction are 80 ° (as shown in Figure 4), are topmost drawn with the lowermost two wedge-shaped strabismuses
Slot 1 and blast plane are 60 ° (as shown in Figure 2), length 3.5m, intermediate four wedge-shaped strabismuses in the angle of vertical direction
The length of keyhole 1 is 3.2m；4 fan transfer of angled cut via hole, length 3m；Angled cut roof hole 2 and angled cut
Bottom plate hole 3 is tunneled respectively to roof and floor barren rock.
Referring to shown in Figure of description 2,3 and 4, V-cut eye uses continuous coupled powder charge, is carried out using emulsion
Explosion；Angled cut hole 1 fills 1 section of non-fulgurite, coefficient of charge 0.8；Angled cut via hole 4, angled cut roof hole 2 and strabismus
Slotting bottom plate hole 3 is packed into 3 sections of non-fulgurite, coefficient of charge 0.5；Ore removal, anchor net after short-delay blasting do for secondary tubular Cut Blasting
Prepare.
Referring to shown in Figure of description 2 and 5, rock drilling is carried out using medium-length hole trolley, cloth hole is carried out according to design drawing, applies
Work should accomplish that orientation is accurate, accurate positioning, and the big emptying aperture 5 in burn cut center, tubular burn cut hole 6 are beaten according to the slanting angle of ore body
Hole, burn cut via hole 9,10 fan transfer of burn cut periphery hole.
Referring to shown in Figure of description 2 and 5, tubular burn cut hole 6 (can be regarded as being distributed on a cylindrical surface) is adopted
With continuous coupled powder charge, explosion is carried out using ammonium oil particles explosive；Tubular burn cut hole 6 fills 1 section of non-fulgurite, coefficient of charge
0.8；Burn cut via hole 9, burn cut roof hole 7, burn cut bottom plate hole 8 are packed into 3 sections of non-fulgurite, coefficient of charge 0.6；
Burn cut periphery hole 10 is packed into 5 sections of non-fulgurite, coefficient of charge 0.4；Procuratorial work demolition effect after short-delay blasting, ore removal.
Claims (5)
- The kerf blasting method 1. a kind of cutting of inclined orebody is gone up a hill, it is characterised in that: cutting explosion of going up a hill is carried out in two times, it is first First development blasting is carried out to quasi- high side is adopted using angled cut using shallow bore hole drill jumbo；Angled cut is V-cut mode； Wedge-shaped angled cut hole and blast plane angle in the horizontal direction are more than or equal to 80 °, then reuse long and medium hole drilling trolley Cutting is carried out using burn cut once to run through explosion；Burn cut is the big emptying aperture cutting method in tubular center；Medium-length hole is straight The inclination angle that cutting is gone up a hill when eye slotting kerf blasting is layered height difference less than or equal to 12m between 30 °~55 °, and plagioclase is less than etc. In 15m, cutting is wide to be less than or equal to 6m.
- The kerf blasting method 2. a kind of inclined orebody cutting as described in claim 1 is gone up a hill, it is characterised in that: the wedge shape is tiltedly Eye keyhole has two column, and each column the top, the lowermost wedge shape angled cut hole and blast plane are in the folder of vertical direction Angle be different from topmost and bottom between wedge-shaped angled cut hole and blast plane vertical direction angle.
- The kerf blasting method 3. a kind of inclined orebody cutting as described in claim 1 is gone up a hill, it is characterised in that: the strabismus is drawn Slot is provided with via hole, and the burn cut is provided with via hole and periphery hole.
- The kerf blasting method 4. a kind of inclined orebody cutting as described in claim 1 is gone up a hill, it is characterised in that: the strabismus is drawn Slot and burn cut are blocked using continuous coupled powder charge, stemming, the powder charge side that dose successively decreases from slotting to via hole, periphery hole Formula.
- The kerf blasting method 5. a kind of inclined orebody cutting as described in claim 1 is gone up a hill, it is characterised in that: the strabismus is drawn Slot and burn cut use short-delay blasting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710104505.6A CN106895754B (en) | 2017-02-24 | 2017-02-24 | A kind of cutting of inclined orebody is gone up a hill kerf blasting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710104505.6A CN106895754B (en) | 2017-02-24 | 2017-02-24 | A kind of cutting of inclined orebody is gone up a hill kerf blasting method |
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| Publication Number | Publication Date |
|---|---|
| CN106895754A CN106895754A (en) | 2017-06-27 |
| CN106895754B true CN106895754B (en) | 2019-01-15 |
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| CN201710104505.6A Expired - Fee Related CN106895754B (en) | 2017-02-24 | 2017-02-24 | A kind of cutting of inclined orebody is gone up a hill kerf blasting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108361041B (en) * | 2018-02-09 | 2018-12-14 | 内蒙古金陶股份有限公司 | A kind of inclination upraise construction technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU95104139A (en) * | 1995-03-23 | 1997-03-10 | Научно-исследовательский институт горной геомеханики и маркшейдерского дела | Method for mining thick flat and sloping seams |
| CN101738148B (en) * | 2009-12-21 | 2013-01-02 | 煤炭科学研究总院南京研究所 | Tunnel medium-length hole smooth blasting method |
| CN103090752B (en) * | 2011-11-04 | 2015-11-25 | 贵州开磷集团股份有限公司 | A kind of gently inclined orebody medium-length hole Cutting Blasting method |
| CN103696770B (en) * | 2013-12-17 | 2016-01-06 | 武汉工程大学 | Underground mining upward incise kerve method |
| CN106288991B (en) * | 2016-09-20 | 2018-02-27 | 中国地质大学（武汉） | A kind of underground mining cuts kerve method of going up a hill |
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Granted publication date: 20190115 Termination date: 20210224 |