CN105333777B - A kind of deep open pit ditch blasting method - Google Patents
A kind of deep open pit ditch blasting method Download PDFInfo
- Publication number
- CN105333777B CN105333777B CN201510761946.4A CN201510761946A CN105333777B CN 105333777 B CN105333777 B CN 105333777B CN 201510761946 A CN201510761946 A CN 201510761946A CN 105333777 B CN105333777 B CN 105333777B
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- Prior art keywords
- hole
- open pit
- gallery
- deep open
- blasting method
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
-
- 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
Abstract
The present invention relates to explosion field, discloses a kind of deep open pit ditch blasting method, the method is comprised the following steps：S1：Determine the position of gallery (10)；S2：In the gallery and near the end in stope direction, first through hole (20) is set, and using the first through hole as fire point；S3：Multiple holes are arranged outside the gallery and near stope direction, make the first through hole quick-fried area be formed with multiple holes；S4：Blasting charge detonate in the first through hole and multiple holes.In the deep open pit ditch blasting method that the present invention is provided, to be arranged in gallery and near stope direction end first through hole as fire point, purpose is that the termination of gallery is blown, so that it is guaranteed that the first bombard of deep open pit explosion can form flood discharge well head.The deep open pit ditch blasting method that the present invention is provided can make Atmospheric precipitation, stope rainwash water flow directly into gallery, be that the explosion of deep open pit realizes that safety is drained off floodwaters.
Description
Technical field
The present invention relates to blasting technique, in particular it relates to a kind of deep open pit ditch blasting method.
Background technology
Substantial amounts of useful mineral, such as opencut, according to the mode of occurence and landform bar in mineral deposit have been rich in mineral deposit
Part is different, and opencut is divided into hillside open pit and deep open pit again, wherein, more than Soil surface covering circle make hillside outdoor
Ore deposit, is deep open pit below Soil surface covering circle.
The characteristics of due to its own, deep open pit, possess the bar for collecting Atmospheric precipitation, rainwash and underground retention of excessive fluid
Part, Just because of this, how to prevent retention of excessive fluid in the recovery process of deep open pit it is critical that, once because send out
Raw retention of excessive fluid, not only affects production, results even in serious consequence, and the consequence includes reducing device efficiency and service life, drop
Stability of low mine engineering speed and destruction side slope etc..
In view of this, the present invention provides a kind of trench digging that can prevent retention of excessive fluid in the recovery process of deep open pit
Outburst method.
The content of the invention
It is an object of the invention to provide a kind of deep open pit ditch blasting method, to avoid when deep open pit is exploited
Generation retention of excessive fluid.
To achieve these goals, the present invention provides a kind of deep open pit ditch blasting method, wherein, the method includes
Following steps：
S1：Determine the position of gallery；
S2：In the gallery and near the end in stope direction, first through hole is set, and using the first through hole as
Fire point；
S3：Multiple holes are arranged outside the gallery and near the stope direction, make the first through hole with it is the plurality of
Hole forms quick-fried area；
S4：Blasting charge detonate in the first through hole and the plurality of hole.
Preferably, step S2 is comprised the following steps：
Length direction along the gallery arranges the second through hole, second through hole at the first through hole predeterminable range
In not blasting charge.
Preferably, the first through hole is arranged on the center of the termination in the interior and close stope direction of the gallery
Place, second through hole are arranged on the centrage of the gallery.
Preferably, the predeterminable range between the first through hole and second through hole is 1.5-2 rice.
Preferably, the first through hole is by from the aperture of the first through hole and along the centerline direction of the first through hole
Lift sandbag and the first through hole is blocked, think the first through hole powder charge.
Preferably, the plurality of hole include along the first through hole different directions arrange it is multiple first ignite holes and
Rectangular-shaped multiple second can be formed and ignite hole.
Preferably, the centerline of the rectangular-shaped length direction arranges multiple second ignition holes, in the square
The both sides of the centerline of the length direction of shape are correspondingly arranged described second respectively along the rectangular-shaped length direction and ignite
Hole is described rectangular-shaped to be formed.
Preferably, described first ignites Kong Weisan, and one of them described first ignition hole position is in the rectangular-shaped length
On the centrage in degree direction, two other described first ignition hole is located at the centrage of the rectangular-shaped length direction respectively
Both sides.
Preferably, it is described it is rectangular-shaped by it is multiple rows of it is described second ignition hole formed, often arrange it is described second ignition hole array pitch be
4m to 4.5m, often arrange the centerline positioned at the rectangular-shaped length direction in the second ignition hole described second draw
Described the second of blast hole and its both sides ignites hole at a distance of 4m to 4.5m, often arranges described second and ignites adjacent described of other in hole
Second ignites between hole at a distance of 5.5m to 6m.
Preferably, it is described second ignite hole aperture be 200mm to 250mm, it is described second ignite hole depth be 17m extremely
18m。
In the deep open pit ditch blasting method that the present invention is provided, will be arranged in gallery and near the end in stope direction
The first through hole of head is used as fire point, it is therefore an objective to the termination of gallery is blown, so that it is guaranteed that the first bombard of deep open pit explosion
Flood discharge well head can be formed.The deep open pit ditch blasting method that the present invention is provided can make Atmospheric precipitation, stope earth's surface footpath
Flowing water flows directly into gallery (also referred to as drainage sump) (length direction of the current direction for gallery), is the explosion reality of deep open pit
Now safety is drained off floodwaters, that is to say, that the deep open pit ditch blasting method that the present invention is provided solves deep recessed excavating plant and drains off floodwaters
Problem.
Description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute the part of description, with following tool
Body embodiment is used for explaining the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the reference view of the deep open pit ditch blasting method that the present invention is provided.
Description of reference numerals
10：Gallery； 20：First through hole；
31：Second ignites hole； 32：First ignites hole；
40：Second through hole； 50：The edge of stope.
Specific embodiment
The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The specific embodiment stated is merely to illustrate and explains the present invention, is not limited to the present invention.
In the present invention, in the case where contrary explanation is not made, the noun of locality for using such as " upper and lower, left and right " is typically referred to
Upper and lower, left and right shown in refer to the attached drawing；" inside and outside " is referred to relative to the inside and outside of each part profile of itself.
Based on the problem for being susceptible to retention of excessive fluid in prior art in the recovery process of deep open pit, the present invention provides one
Deep open pit ditch blasting method is planted, with reference to Fig. 1, the method is comprised the following steps：S1：Determine the position of gallery 10；S2：
In gallery 10 and near the termination in stope direction, first through hole 20 is set, and using the first through hole 20 as fire point；S3：Flat
Lane 10 is outer and arranges multiple holes near stope direction, makes first through hole 20 form quick-fried area with multiple holes；S4：First through hole 20 with
And blasting charge detonate in multiple holes.
In the deep open pit ditch blasting method that the present invention is provided, will be arranged in gallery 10 and near stope direction
The first through hole 20 of termination is used as fire point, it is therefore an objective to which the termination of gallery is blown, so that it is guaranteed that the of deep open pit explosion
One big gun can form flood discharge well head.The deep open pit ditch blasting method that the present invention is provided can make Atmospheric precipitation, stope ground
Table runoff water flows directly into gallery (also referred to as drainage sump) (length direction of the current direction for gallery 10), is deep open pit
Explosion realizes that safety is drained off floodwaters, that is to say, that the deep open pit ditch blasting method that the present invention is provided solves deep recessed outdoor adopt
The problem that field is drained off floodwaters.
Wherein, step S2 is comprised the following steps：Length direction along gallery 10 is at 20 predeterminable range of first through hole
Second through hole 40 is set, not blasting charge in second through hole 40, that is to say, that using the second through hole 40 as emptying aperture, adopt for protection
Edge 50, in other words, the present invention is the hole wall of explosion the second through hole 40 of destruction using first through hole 20, and due to the
Two through holes, 40 no blasting charge, therefore the impact to the edge 50 of stope is less.In addition, why by first through hole 20 and second
Through hole 40 is both configured to through hole (namely making first through hole 20 and the second through hole 40 all penetrate gallery), in order to beneficial to quick-fried
The draining when first bombard is bored a hole when broken.
In order to facilitate draining, the first through hole 20 to be arranged in gallery 10 and near the described of the stope direction
The center of gallery termination, the second through hole 40 are arranged on the centrage of gallery 10.Wherein, the first through hole 20 and second is logical
Predeterminable range between hole 40 is 1.5-2 rice.
Wherein, the first through hole 20 as fire point need by the closure of its bottom can powder charge, specifically, first through hole
20 sandbag can be lifted by the centerline direction from the aperture of first through hole 20 and along the first through hole 20 and by first through hole
20 closure.
In addition, the plurality of hole includes that multiple first of the different directions setting along first through hole 20 ignite holes 32 and energy
Enough form rectangular-shaped multiple second and ignite hole 31, so can easily blow the termination two in the close stope direction of gallery
The space of side, consequently facilitating machinery excavates the well head (namely sluice well head) of gallery.
Specifically, the centerline of the rectangular-shaped length direction arranges multiple second ignition holes 31, described
The both sides of the centerline of rectangular-shaped length direction are correspondingly arranged described second respectively along the rectangular-shaped length direction and draw
Blast hole 31 is described rectangular-shaped to be formed.That is, the pattern in the second ignition hole 31 can adopt middle cut explosion side
Formula cloth hole.
Wherein, described first ignites hole 32 for three, and one of them described first ignition hole 32 is located at described rectangular-shaped
On the centrage of length direction, two other described first ignition hole 32 is respectively positioned at the center of the rectangular-shaped length direction
The both sides of line.It should be noted that the direction of arrow in Fig. 1 is detonation direction during explosion, i.e. first through hole 20 is first detonated, so
31 explosion of hole is ignited in the three first ignition explosions therewith of hole 32 afterwards, the second last, wherein the second explosion for igniting hole 31 is also root
According to the direction of arrow Hole-by-hole initiating in figure.
In addition, it is described it is rectangular-shaped by it is multiple rows of it is described second ignition hole 31 formed, due to second ignite hole 31 first bombard water
Many, one-tenth porosity is not high, it is therefore desirable to encryption perforation, and specifically, it is 4m to 4.5m often to arrange the described second array pitch for igniting hole 31, often
Arrange described second ignite described second of the centerline positioned at the rectangular-shaped length direction in hole 31 ignite hole 31 with
Described the second of its both sides ignites hole 31 at a distance of 4m to 4.5m, often arrange described second ignite other in hole 31 it is adjacent described the
Two ignite between hole 31 at a distance of 5.5m to 6m.
Wherein, second ignition hole 31 (can be straight hole) can be bored a hole using rotary drill, and its aperture can be 200mm
To 250mm, penetration depth can be 17m to 18m.In addition, with regard to second ignite hole 31, in practical operation, be referred to
Lower data：
(1) filling height (filling height refers to that hole depth deducts shot elevation)：Generally, filling height is not less than
7.5 meters, preferably 8 meters.
(2) second explosive payloads for igniting hole 31：Load in mixture every meter of explosive payload of medicine by 60kg calculate, shot elevation in 10-11 rice,
It is 600-660kg per hole dose, takes maximum dose 600kg.Further, since explosive specific charge (explosive specific charge refers to explosion unit ore deposit
The average explosive charge used of rock) demolition effect is not only affected, the production cost and job safety of Ore are also directly connected to, therefore
Need to choose suitable explosive specific charge, such as explosive specific charge can be ten thousand tons of 3600-4000kg/, Ore proportion calculated by 4.0,
Rock Specific Gravity is calculated by 3.04.
(3) blasting scale：Each quick-fried area is by 10 tons or so tissues of total dose.
(4) safety is calculated：Due to deep open pit sluicing well head (the namely termination in the close stope direction of gallery 10)
It is generally relatively near apart from the edge 50 of stope, therefore maximum velocity of vibration to be met the safety need at the edge 50 of stope.
(5) initiation net：Using the auspicious triumphant detonator of Australia, in the second ignition hole 31,400ms detonators, hole-by-hole initiation are used.
The deep open pit ditch blasting method that the present invention is provided can be such that Atmospheric precipitation, stope rainwash water directly flows
Enter gallery 10, be that the explosion of deep open pit realizes that safety is drained off floodwaters, that is to say, that the deep open pit trench digging that the present invention is provided is quick-fried
Broken method solves the problems, such as that deep recessed excavating plant drains off floodwaters such that it is able to avoids affecting production, and avoids reducing device efficiency
With service life, reduce stability etc. of mine engineering speed and destruction side slope.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, but, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the present invention, various letters can be carried out to technical scheme
Monotropic type, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, can be combined by any suitable means.In order to avoid unnecessary repetition, the present invention to it is various can
The compound mode of energy is no longer separately illustrated.
Additionally, combination in any between a variety of embodiments of the present invention, can also be carried out, as long as which is without prejudice to this
The thought of invention, which should equally be considered as content disclosed in this invention.
Claims (10)
1. a kind of deep open pit ditch blasting method, it is characterised in that the method is comprised the following steps：
S1：Determine the position of gallery (10)；
S2：In the gallery (10) and near the end in stope direction, first through hole (20) is set, and by the first through hole
(20) as fire point；
S3：Multiple holes are arranged outward and near the stope direction in the gallery (10), make the first through hole (20) with it is described
Multiple holes form quick-fried area；
S4：Blasting charge detonate in the first through hole (20) and the plurality of hole.
2. deep open pit ditch blasting method according to claim 1, it is characterised in that step S2 includes following
Step：
Along the length direction of the gallery (10), the second through hole (40) is set at the first through hole (20) predeterminable range, it is described
Not blasting charge in second through hole (40).
3. deep open pit ditch blasting method according to claim 2, it is characterised in that the first through hole (20) sets
The center of the termination in the interior and close stope direction of the gallery (10) is put, second through hole (40) is arranged on
On the centrage of the gallery (10).
4. deep open pit ditch blasting method according to claim 3, it is characterised in that the first through hole (20) with
The predeterminable range between second through hole (40) is 1.5-2 rice.
5. deep open pit ditch blasting method according to claim 1, it is characterised in that the first through hole (20) is led to
Cross from the aperture of the first through hole (20) and along the first through hole (20) centerline direction lifting sandbag and by described first
Through hole (20) is blocked, and thinks the first through hole (20) powder charge.
6. deep open pit ditch blasting method according to claim 1, it is characterised in that the plurality of hole is included along institute
State multiple first ignition hole (32) of the different directions setting of first through hole (20) and rectangular-shaped multiple second can be formed
Ignite hole (31).
7. deep open pit ditch blasting method according to claim 6, it is characterised in that the rectangular-shaped length side
To centerline arrange it is multiple it is described second ignite hole (31), in the both sides of the centerline of the rectangular-shaped length direction
It is described rectangular-shaped to be formed that second ignition hole (31) is correspondingly arranged respectively along the rectangular-shaped length direction.
8. deep open pit ditch blasting method according to claim 7, it is characterised in that described first ignites hole (32)
For three, one of them it is described first ignite hole (32) on the centrage of the rectangular-shaped length direction, two other
Described first ignites the both sides that hole (32) are located at the centrage of the rectangular-shaped length direction respectively.
9. deep open pit ditch blasting method according to claim 7, it is characterised in that described rectangular-shaped by multiple rows of institute
The formation of the second ignition hole (31) is stated, it is 4m to 4.5m often to arrange the described second array pitch for igniting hole (31), often arranges described second and ignites
Described second of the centerline positioned at the rectangular-shaped length direction in hole (31) ignites the institute of hole (31) and its both sides
The second ignition hole (31) is stated at a distance of 4m to 4.5m, described second is often arranged and is ignited other adjacent described second ignition in hole (31)
At a distance of 5.5m to 6m between hole (31).
10. the deep open pit ditch blasting method according to any one in claim 6-9, it is characterised in that described
Second aperture for igniting hole (31) is 200mm to 250mm, and the described second depth for igniting hole (31) is 17m to 18m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510761946.4A CN105333777B (en) | 2015-11-10 | 2015-11-10 | A kind of deep open pit ditch blasting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510761946.4A CN105333777B (en) | 2015-11-10 | 2015-11-10 | A kind of deep open pit ditch blasting method |
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| CN105333777A CN105333777A (en) | 2016-02-17 |
| CN105333777B true CN105333777B (en) | 2017-03-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101319862B (en) * | 2007-06-08 | 2012-10-31 | 鞍钢集团矿业公司 | Novel horizontal trenching and vertical deep borehole initiation method for deep concave strip mine |
| CN101846484A (en) * | 2010-04-02 | 2010-09-29 | 攀钢集团冶金工程技术有限公司 | Blasting method of driving, mining and cutting drift under ultrahard fault |
| CN102116156A (en) * | 2010-04-28 | 2011-07-06 | 鞍钢集团矿业公司 | Slope expansion and blasting method for mining deep concave open-pit mine by stages |
| CN102619517A (en) * | 2012-04-26 | 2012-08-01 | 辽宁科技大学 | Overlaying rock cemented pillarless sublevel caving method |
| 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 |
| CN103278052A (en) * | 2013-06-04 | 2013-09-04 | 贵州新联爆破工程集团有限公司 | Blasthole water discharge method for |
| CN104748632B (en) * | 2015-04-03 | 2016-05-04 | 核工业井巷建设公司 | One chock blasting construction method under water |
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