CN106247877A - A kind of hypervelocity forces kerve method without cutting hole deviation line symmetry - Google Patents
A kind of hypervelocity forces kerve method without cutting hole deviation line symmetry Download PDFInfo
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- CN106247877A CN106247877A CN201610628820.4A CN201610628820A CN106247877A CN 106247877 A CN106247877 A CN 106247877A CN 201610628820 A CN201610628820 A CN 201610628820A CN 106247877 A CN106247877 A CN 106247877A
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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
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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
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Abstract
The invention discloses a kind of hypervelocity and force kerve method without cutting hole deviation line symmetry, belong to underground mining field.As follows: 1) according to stope condition, to constructing, complete ore removal route, cutting lane, connection lane, the construction of collection ore deposit moat ditch, form stope；2) in the middle of cutting lane, construction formation is caunched district, and district of caunching is trigonum；3) using drilling jumbo to determine drilling construction point in symmetrical position, district of caunching, cutting lane, drilling construction point is holed according to hole packed plane forward leaning angle, and forward leaning angle is with respect to the horizontal plane 40 °～88 °, middle is incremented by both sides hole packed plane level inclination；4) after boring completes, clog, form blast hole stemming district, according to hole packed plane successively explosion, the big gun hole, row face of every 2 symmetrical holes positions of separate explosion, carrying out explosion, explosion ore removal.The present invention has stope height of lift height, low cost, advantage that security risk is low.
Description
Technical field
The present invention relates to underground mining field, more particularly, it relates to a kind of hypervelocity is forced without cutting hole deviation line symmetry
Kerve method.
Background technology
Domestic traditional stope height is when ＞ 20 meters, and general employing has cutting well kerve, but has well kerve to meet and adopt
The engineerings such as cutting well chamber, connecting taxiway are arranged at top, field, possess the essential conditions such as raise boring machine construction.When the continuous thickness of ore body between
When 20～35 meters, be divided into 2 slicings adopt cut bigger；As used common law construction cutting well, the most not quite more than 15 meters,
And poor stability.When ore body branch be combined phenomenon frequent time, can use without cutting well force kerve Technology, each layer blind orebody
Can only set out ore deposit undercut level, share top filling level, by contrast, have well kerve to adopt and cut ratio, barren rock incorporation rate etc. relatively
Greatly.
Kerve is forced to have two ways without cutting well.The first is symmetric wedge-shape parallel deep hole kerve technology, symmetric wedge-shape
Parallel deep hole kerve technology mainly using cutting lane as the explosion scope of freedom, utilizes symmetrical dip-parallel big gun hole to carry out multiple wedge shape and draws
Groove, gradually lifts grooving to design height, as shown in Figure 1 and Figure 2.Wedge type slotting uses symmetrical expression dip-parallel big gun hole, and big gun hole is straight
Footpath 65～80mm, in face of row, degree of tilt is from the beginning of about 40 °, is gradually lifted to 90 °, and hole packed plane spacing 1.5～1.8m is same
About the big gun hole of row face angle symmetrically, often 4 big gun holes of row, Kong Yukong is parallel to each other, and pitch of holes is typically based on cutting groove width
Depending on degree, width is the biggest more is beneficial to cutting groove explosion.Symmetrical row face explosion to synchronize, according to cutting tunnel compensation space
Size calculates the row of for the first time explosion, for the first time after explosion, should carry out loosening ore removal at corresponding route or in cutting lane, with
Supplementing ensuing blast requisite space, gradually explosion forms cutting groove.Along with rock drilling and the skill upgrading of charge device, the party's farad
Groove height has room for promotion.
The second is parallel fan deep hole blasting Trenching technology.Parallel fan deep hole blasting Trenching technology is at cutting gallery
Middle arranging fan-shaped round, to cut gallery for the explosion scope of freedom and compensation space, big gun hole angularly segmentation elementary errors is the most quick-fried by row
Be broken into groove draws segmentation method, as shown in Figure 3, Figure 4.Scallop hole row face is perpendicular to route, according to cutting gallery width, flat in cutting
Arrange 3～4 row little array pitch fanhole(s) in lane, detonate from lateral opening beginning segmentation, hole-specifically raise and once cut grooving.Blasthole diameter
65～80mm, according to cutting lane width adjustment array pitch, generally 1.0～1.3m；Every artillery salvo number of perforations is determined according to kerve height,
In cutting big gun hole, the big gun hole of each row's equal angular should be in a plane.Big gun hole, ore deposit construction phase that construct in kerve big gun hole and back production falls
With, every round only needs telephone-moving 1 time, the hole easy construction of kerve big gun.The party's onepull owned by France grooving, it is impossible to blasting in groups, kerve
Gallery section compensation space the most slit limits, and is highly difficult to improve.
Along with rock drilling equipment is increasingly advanced, sublevel drilling height is increasing, and stope height of lift can improve
To more than 30m, making cutting well construction cost more and more higher, security risk also increases as, lack now reliable high sublevel without
Cutting well kerve technology, is difficult to kerve height is brought up to 30m.
Summary of the invention
1. to solve the technical problem that
For stope height of lift is low, cost is high, security risk high problem present in prior art, the invention provides
A kind of hypervelocity forces kerve method without cutting hole deviation line symmetry.It is low that it has stope height of lift height, low cost, security risk
Advantage.
2. technical scheme
The purpose of the present invention is achieved through the following technical solutions.
A kind of hypervelocity forces kerve method without cutting hole deviation line symmetry, and step is as follows:
1) according to stope condition, to constructing, ore removal route, cutting lane, connection lane, the construction of collection ore deposit moat ditch, shape are completed
Become stope；
2) in the middle of cutting lane, construction formation is caunched district, and district of caunching is trigonum；
3) use drilling jumbo to determine drilling construction point in symmetrical position, district of caunching, cutting lane, drilling construction point according to
Hole packed plane forward leaning angle is holed, and forward leaning angle is with respect to the horizontal plane 40 °～88 °, inclines in centre to both sides hole packed plane level
Angle is incremented by；
4) after boring completes, clog, form blast hole stemming district, according to hole packed plane successively explosion, every separate explosion 2
The big gun hole, row face of individual symmetrical holes position, is carrying out explosion, explosion ore removal.
Further, the district's overhead height that caunches in step 2 is 2-2.5m, makes rig construct to both sides in district of caunching.Protect
When having demonstrate,proved the big boring of initial stage angle, construction is smoothed out.
Further, the drilling construction point of the left and right sides, district of caunching in step 3 is 9～13, and each corresponding boring sets
Put 2～3 hole packed planes.Multiple rows of setting ensure that the part explosion rock is deep is complete.
Further, aperture, big gun hole is set to 80mm, and minimum burden calculates minimum burden according to single hole explosive payload
Value, the ratio calculation minimum burden value in minimum burden and aperture, both get the small value, for hole packed plane array pitch；According to single hole
Explosive payload calculates minimum burden value: W=d (7.85 △ k/mq) 0.5, and wherein W is minimum burden, and unit is rice, and d is hole
Footpath, unit is decimetre, and △ is explosive density, and unit is grams per milliliter, and k is coefficient of charge, and k=0.65～0.85, m are deep hole hole
End close coefficient, m=1～1.25, powder factor, unit kilograms per cubic meter；Minimum burden and the ratio meter in aperture
Calculate minimum burden value: W=(25～30) d.Ensure that in the Ore of different hardness, select suitable aperture, big gun hole and big gun hole
Row face array pitch, big gun hole array pitch need to be less than, equal to minimum burden explosion more economically.
Further, the spacing that each drilling construction point is constituted is 1.9～2.4m, the big gun hole of each drilling construction point
Row's interplanar distance, aperture is away from a=0.2m, and bottom hole pitch a1=mW, m are deep hole close coefficient, deep hole close coefficient m=1.0～1.25.
Ensure that the height of final explosion so that explosion can reach hypervelocity.
Further, each hole packed plane is provided with 4 big gun holes 1,2,3,4 from left to right, big gun hole 1,2 and big gun hole 3,4
Symmetrical along connection lane center vertical, middle two big gun holes 2,3 and connection horizontal plane angle α=90 °, lane, 1,4 Kong Yulian lane horizontal plane folders
Angle beta=87 °～89 °.The directivity in the explosion face of ensure that, burst region is bigger.
Further, each hole packed plane 2,3 pitch of holes b, hole packed plane 1,2 pitch of holes and 2,3 pitchs of holes c, each big gun
Kong Yu lane, row face, hole 1,4 interplanar distance d is identical, and b, c, d are sequentially reduced.Ensure that with the explosion of neighbouring face is more complete.
Further, the kerve district clipping after explosion is big, kerve district burden be round minimum burden 0.6～
0.8 times, kerve district burden is gradually increased to both sides hole packed plane from centre.When pitch-row is slightly larger than burden, kerve effect is relatively
Good.
Further, step 3 drilling depth is for reducing after being gradually increased from centre to both sides hole packed plane, and big gun hole is filled out
The plug district degree of depth is 1.2～2m, and the corresponding blast hole stemming district degree of depth reduces after increasing.The purpose of filling is to make the energy of explosive charge
Measure utilization very well, improve rock blasting crushing effect.
Further, during step 4, after explosion, use total powerstation or three-dimensional laser scanner that explosion is imitated each time
Fruit checks, when discovery is bigger with explosion design deflection, stops explosion, passes through at perforations adding from ore removal route or collection ore deposit moat ditch
The outstanding top of reason, perforations adding processes followed by blasting hole, until kerf blasting is fully completed.Ensure that during including is the completeest
Become, it is ensured that explosion is stablized in follow-up when deflection.
3. beneficial effect
Compared to prior art, it is an advantage of the current invention that:
(1) the solution of the present invention, increases to the hypervelocity of 33 meters by mining stope height, improves stope raw in technical process
Produce intensity, reduce to adopt and cut ratio, save mining cost；
(2) in the case of cutting well of not constructing, directly use and force kerve to deep hole, fall on a large scale for follow-up stope
Ore deposit creates conditions, and reduces cost and the security risk of construction cutting well, reduces the operation of site operation, reduce management cost；
(3) left and right sides, district of caunching arranges multiple drilling construction point, and multiple rows of setting ensure that in the part explosion that rock is deep
Completely；
(4) calculating of minimum burden, minimum burden calculates minimum burden value, minimum resistance according to single hole explosive payload
The ratio calculation minimum burden value in line and aperture, both get the small value, COMPREHENSIVE CALCULATING, it is ensured that select in the Ore of different hardness
Selecting suitable aperture, big gun hole and hole packed plane array pitch, big gun hole array pitch need to be less than, equal to minimum burden explosion more economically；
(5) spacing that each drilling construction point is constituted, it is ensured that the height of final explosion so that explosion can reach superelevation
Degree；
(6) each hole packed plane is provided with 4 big gun holes 1,2,3,4 from left to right, it is ensured that the directivity in explosion face, explosion
Region is bigger；
(7) the kerve district clipping after explosion is big, and kerve district burden is 0.6～0.8 times of round minimum burden, draws
Groove district burden is gradually increased to both sides hole packed plane from centre.When pitch-row is slightly larger than burden, kerve effect is preferable.
(8) use total powerstation or three-dimensional laser scanner that demolition effect is checked after explosion each time, pass through perforations adding
Process outstanding top, it is ensured that smoothly completing during including, it is ensured that explosion is stablized in follow-up when deflection；
(9) present invention relies on domestic drilling and blasting equipment to construct, and technique is simple, safe and reliable；This invention can be applicable to height
The mining methods such as sublevel open stoping afterwards filling mining method, high sublevel caved stopes or deep hole shrinkage method, have a extensive future；Become
This reduction, ore deposit per ton manufacturing cost can save 1～3 yuan.
Accompanying drawing explanation
Fig. 1 is symmetric wedge-shape parallel deep hole kerve method entry direction schematic diagram；
Fig. 2 is symmetric wedge-shape parallel deep hole kerve method cutting direction, lane schematic diagram；
Fig. 3 is parallel fan deep hole blasting cutting method entry direction schematic diagram；
Fig. 4 is parallel fan deep hole blasting cutting method cutting direction, lane schematic diagram；
Fig. 5 is mining area overall structure schematic diagram；
Fig. 6 is that ore removal entry direction forces kerve profilograph；
Fig. 7 is drilling construction point structure for amplifying schematic diagram；
Fig. 8 leans forward A face, big gun hole and A ' face arrangement schematic diagram for cutting lane kerve pencil；
Fig. 9 be stope explosion fall ore goaf scanning profilograph；
Figure 10 be stope explosion fall ore goaf scanning drawing in side sectional elevation.
Label declaration in figure:
1, caunch district；2, stope one；3, stope two；4, cutting lane；5, connection lane one；6, connection lane two；7, ore removal route；8, adopt
Cross section, field；9, stope vertical section；10, hole packed plane；11, drilling construction point；12, blast hole stemming district；
A, with separate explosion arrange interplanar distance；B, each hole packed plane 2,3 pitch of holes；C, each hole packed plane 1,2 pitch of holes and 2,3 holes
Spacing；D, each hole packed plane 1,4 Kong Yu lane interplanar distance；α, each hole packed plane 2,3 Kong Yulian lane horizontal plane angle；β, each big gun hole row
Kong Yulian lane, face 1,4 horizontal plane angle.
Detailed description of the invention
Below in conjunction with Figure of description and specific embodiment, the present invention is described in detail.
Embodiment 1
A kind of hypervelocity forces kerve method without cutting hole deviation line symmetry, and step is as follows:
1) according to stope condition,
To constructing, such as Fig. 5, complete ore removal route 7, cutting lane 4, connection lane 1, connection lane 26, collect executing of ore deposit moat ditch
Work, forms stope 1 and stope 23；District 1 overhead height that caunches is 2-2.5m, makes rig construct to both sides in district 1 of caunching.
2) in the middle of cutting lane 4, construction formation is caunched district 1, and district 1 of caunching is for trigonum；
3) using drilling jumbo to determine drilling construction point 11 in symmetrical position, district 1 of caunching, cutting lane 4, district 1 of caunching is left
The drilling construction point of right both sides is 9～13, and drilling construction point 11 is holed according to hole packed plane 10 forward leaning angle, each corresponding brill
Hole arranges 2～3 hole packed planes 10, and forward leaning angle is with respect to the horizontal plane 40 °～88 °, middle to both sides hole packed plane 10 water
Flat inclination angle is incremented by；
Aperture, big gun hole is set to 80mm, and minimum burden calculates minimum burden value, minimum resistance according to single hole explosive payload
The ratio calculation minimum burden value in line and aperture, both get the small value, for hole packed plane array pitch；Calculate according to single hole explosive payload
Island operation value: W=d (7.85 △ k/mq) 0.5, wherein W is minimum burden, and unit is rice, and d is aperture, and unit is for dividing
Rice, △ is explosive density, and unit is grams per milliliter, and k is coefficient of charge, and k=0.65～0.85, m are deep hole bottom close coefficient, m
=1～1.25, powder factor, unit kilograms per cubic meter；The ratio calculation minimum burden in minimum burden and aperture
Value: W=(25～30) d.
The spacing that each drilling construction point 11 is constituted is 1.9～2.4m, the hole packed plane 10 of each drilling construction point 11
Spacing, aperture is away from a=0.2m, and bottom hole pitch a1=mW, m are deep hole close coefficient, and deep hole close coefficient m=1.0～1.25 is each
Hole packed plane 10 is provided with 4 big gun holes 1,2,3,4 from left to right, and big gun hole 1,2 and big gun hole 3,4 are symmetrical along connection lane center vertical, in
Between two big gun holes 2,3 and connection horizontal plane angle α=90 °, lane, 1,4 horizontal plane angle β=87 °, Kong Yulian lane～89 °, each big gun hole
Row face 102,3 pitch of holes b, the 1 of hole packed plane 10,2 pitchs of holes and 2,3 pitchs of holes c, 1,4 faces, Kong Yu lane of each hole packed plane 10
Spacing d is identical, and b, c, d are sequentially reduced, and drilling depth is for reducing after centre to both sides hole packed plane 10 is gradually increased, and big gun hole is filled out
Plug district 12 degree of depth is 1.2～2m, and corresponding blast hole stemming district 12 degree of depth reduces after increasing.Kerve district clipping after explosion is big,
Kerve district burden is 0.6～0.8 times of round minimum burden, kerve district burden from centre to both sides hole packed plane 10 by
Cumulative greatly.
4) after boring completes, clog, form blast hole stemming district 12, according to hole packed plane 10 successively explosion, every time
The big gun hole, row face of 2 symmetrical holes positions of explosion, is carrying out explosion, explosion ore removal, uses total powerstation or three-dimensional sharp each time after explosion
Demolition effect is checked by photoscanner, when finding bigger with explosion design deflection, stops explosion, from ore removal route 7 or
Collection ore deposit moat ditch processes outstanding top by perforations adding, and perforations adding processes followed by blasting hole, until kerf blasting is fully completed.
Embodiment 2
As viewed in figures 5-8, analyzing this ore deposit, mining area characteristic, a kind of stope height that is suitable for, under the conditions of 33 meters, is not required in construction
The scheme forcing kerve without cutting well in cutting lane, portion, design is as follows:
Need mining height 33 meters, the long 58m in cutting lane, panel:
1. panel cutting lanewidth degree 5.0～6.0m；
2. go up to (leaning forward) pencil long and medium hole drilling chassis effective rock drilling degree of depth ≮ 36.0m；
3. upper centripetal deep hole explosive loader or the chassis effective charge degree of depth ≮ 36.0m；
4. explosive density 0.95～1.25t/m3；
5. compensation space coefficient ≮ 1.25 times；
6. arrange along cutting lane, panel axis both wings specular and force kerve hole；
7. drilling and blasting skill V art parameter: perforation total footage 5300m, aperture Φ 75～80.It is subdivided into 11 sequence holes, counts 48
Row, often 4 holes of row；First row's symmetrical centre away from 15～17m, trestle column 1.9～2.4m, aperture away from 1.6～1.8m, bottom hole pitch 1.2
～1.6m；Maximum hole depth 35.8m；
8. explosion design parameter: total shot depth 5015m, total charge 26.5t；Explosion sequence is divided into 9, and sequence is maximum
Explosive payload 4277kg, msdelayed light emission controlled blasting at the bottom of hole；
Labor is as follows:
Physical properties of ore & rock
Ore proportion: 3.69t/m3；
Rock Specific Gravity: 2.89t/m3.
The ore deposit rock coefficient of volumetric expansion: 1.5；
Polodyakonov coefficient coefficient: Ore: f=12～16
Rock: f=8～14, locally 18；
Deep hole is arranged
(1), deep hole parameter designing
1, aperture: d=80mm；
2, the determination of minimum burden；
(1) minimum burden is calculated according to single hole explosive payload；
W=d (7.85 △ k/mq) 0.5
=0.8 × (7.85 × 1.05 × 0.8 ÷ 1.1 ÷ 0.95) 0.5
=2.01 meters
W minimum burden, rice；
D aperture, d=0.8 decimetre；
△ explosive density, △=1.05 grams per milliliter；
K coefficient of charge, 0.65～0.85；K takes 0.8；
M deep hole bottom close coefficient, 1～1.25；1.1 are taken during design；
Q powder factor, during f=12～16, q=0.8～1.1 kg/m 3, take 0.95 during design.
(2) choose according to the ratio in minimum burden and aperture
Rule of thumb formula:
Hard ore deposit rock: W=(25～30) d=2000～2400mm；
According to above (1), (2) calculating achievement, design considers in Ore hard to hard, when aperture 80mm, and big gun hole array pitch
Need to be less than, equal to minimum burden, take 2m both economical rationally.
3, pitch of holes
(1) bottom hole pitch a: determine with minimum burden and deep hole close coefficient.
A=mW=1.0～1.25 × 2.0=2.0～2.5m, design takes about 2.4m.
(2) aperture is away from a1: on to scallop hole aperture away from according to drilling machine construction require determine, a1 >=0.2m.
Owing to kerve district clipping is very big, according to sieve river iron mine experience, kerve district burden be round burden 0.6～
0.8 times, kerve burden is 1.5m, and when pitch-row is slightly larger than burden, kerve effect is preferable.
33m high sublevel symmetry kerve design in, burden gets the small value when former row, is 1.5～1.6m, kerve by
Step is raised, and after explosion clipping makes moderate progress, burden is amplified to 1.8m, and pitch-row limits due to cutting span length, and pitch-row is
1.7m.Kerve plane, section, hole packed plane figure, and each round drilling parameter, use the mode of symmetrical kerve, symmetrical middle
Place is due to drilling machine construction difficulty, and the 2.5m that need to manually caunch is high.
Design carries out explosion and carries out forcing kerf blasting after determining.
Embodiment 3
Actual blasting scheme is as follows:
Kerve Center is ore removal route and Lian Daonan cutting lane centrage decussation point.
The little machine gun of kerve centerline is dug, it is ensured that First ray demolition effect.
Totally 22, long and medium hole drilling seat in the plane, lateral symmetry respectively arranges 11.As bore angle is less, during perforate difficulty, put
Dig anti-wedge with little machine gun after sample, improve perforate precision.
Symmetrical explosion is taked in explosion, loosens four sides, ore removal exploiting field and loosens ore removal, to expose open wiring mouth as principle.
This kerve designs 2 meters, and design kerve hole total footage 5296.4 meters, becoming sump volume is 9048 cubic metres, converts Ore
Measure 33025 tons；Design explosive charge 26448.6kg, Cutting Blasting unit consumption explosive 0.8009kg/t.
Cutting lane kerve drilling and blasting design catalog
Each hole packed plane 10 parameter is as follows:
Explosion for the first time:
Explosion for the second time:
Explosion for the third time:
4th separate explosion:
5th separate explosion:
6th separate explosion:
7th separate explosion:
8th separate explosion:
9th separate explosion:
After 9 separate explosions, dead zone uses three-dimensional laser scanner measurement result, indulges along stope cross section 8 and stope
Section 9 is scanned measuring, and as shown in Figure 9, Figure 10, transverse and longitudinal section display stope height is 31.6m, and width is 17.9m, super
Cross the height of 30m.Demolition effect basically reaches design requirement.
This programme can not be constructed in the case of cutting well, directly uses and forces kerve to deep hole, big for follow-up stope
The scale ore deposit that falls creates conditions.Reduce cost and the security risk of construction cutting well, it is possible to obtain the exploiting field of hypervelocity, reduce existing
The operation of field construction, reduces management cost.
Below being schematically described the invention and embodiment thereof, this description does not has restricted, not
In the case of deviating from the spirit or essential characteristics of the present invention, it is possible to realize the present invention in other specific forms.Institute in accompanying drawing
Show is also one of embodiment of the invention, and actual structure is not limited thereto, any attached in claim
Figure labelling should not limit involved claim.So, if those of ordinary skill in the art is enlightened by it, without departing from
In the case of this creation objective, design the frame mode similar to this technical scheme and embodiment without creative, all should
Belong to the protection domain of this patent." one " word additionally, " an including " word is not excluded for other elements or step, before element
It is not excluded for including " multiple " this element.In claim to a product multiple elements of statement can also by an element by software or
Person's hardware realizes.The first, the second word such as grade is used for representing title, and is not offered as any specific order.
Claims (10)
1. hypervelocity forces a kerve method without cutting hole deviation line symmetry, and step is as follows:
1) according to stope condition, to constructing, ore removal route (7), cutting lane (4), connection lane, the construction of collection ore deposit moat ditch are completed,
Form stope；
2) in the middle of cutting lane (4), construction formation is caunched district (1), and district of caunching (1) is trigonum；
3) drilling jumbo is used to determine drilling construction point (11), drilling construction in cutting lane (4) district (1) symmetrical position of caunching
Point (11) is holed according to hole packed plane (10) forward leaning angle, and forward leaning angle is with respect to the horizontal plane 40 °～88 °, middle to both sides
Hole packed plane (10) level inclination is incremented by；
4) after boring completes, clog, form blast hole stemming district (12), according to hole packed plane (10) explosion successively, every time
The big gun hole, row face of 2 symmetrical holes positions of explosion, is carrying out explosion, explosion ore removal.
A kind of hypervelocity the most according to claim 1 forces kerve method without cutting hole deviation line symmetry, it is characterised in that: step
District (1) overhead height that caunches in rapid 2 is 2-2.5m, makes rig construct to both sides in district of caunching (1).
A kind of hypervelocity the most according to claim 1 and 2 forces kerve method without cutting hole deviation line symmetry, and its feature exists
In: the drilling construction point of district (1) left and right sides of caunching in step 3 is 9～13, and each corresponding boring arranges 2～3 big gun hole rows
Face (10).
A kind of hypervelocity the most according to claim 3 forces kerve method without cutting hole deviation line symmetry, it is characterised in that: big gun
Aperture, hole is set to 80mm, and minimum burden calculates minimum burden value, minimum burden and aperture according to single hole explosive payload
Ratio calculation minimum burden value, both get the small value, for hole packed plane array pitch；Minimum burden is calculated according to single hole explosive payload
Value: W=d (7.85 △ k/mq) 0.5, wherein W is minimum burden, and unit is rice, and d is aperture, and unit is decimetre, and △ is fried
Medicine density, unit is grams per milliliter, and k is coefficient of charge, and k=0.65～0.85, m are deep hole bottom close coefficient, m=1～
1.25, powder factor, unit kilograms per cubic meter；The ratio calculation minimum burden value in minimum burden and aperture: W
=(25～30) d.
A kind of hypervelocity the most according to claim 4 forces kerve method without cutting hole deviation line symmetry, it is characterised in that: every
The spacing that individual drilling construction point (11) is constituted is 1.9～2.4m, hole packed plane (10) spacing of each drilling construction point (11),
Aperture is away from a=0.2m, and bottom hole pitch a1=mW, m are deep hole close coefficient, deep hole close coefficient m=1.0～1.25.
A kind of hypervelocity the most according to claim 4 forces kerve method without cutting hole deviation line symmetry, it is characterised in that: every
One hole packed plane (10) is provided with 4 big gun holes 1,2,3,4 from left to right, and big gun hole 1,2 and big gun hole 3,4 are along connection lane center vertical pair
Claim, middle two big gun holes 2,3 and connection horizontal plane angle α=90 °, lane, 1,4 horizontal plane angle β=87 °, Kong Yulian lane～89 °.
A kind of hypervelocity the most according to claim 4 forces kerve method without cutting hole deviation line symmetry, it is characterised in that: every
One hole packed plane (10) 2,3 pitchs of holes b, hole packed plane (10) 1,2 pitchs of holes and 2,3 pitchs of holes c, each hole packed plane (10) 1,4
Kong Yu lane interplanar distance d is identical, and b, c, d are sequentially reduced.
A kind of hypervelocity the most according to claim 4 forces kerve method without cutting hole deviation line symmetry, it is characterised in that: quick-fried
Kerve district clipping after Po is big, and kerve district burden is 0.6～0.8 times of round minimum burden, kerve district burden from
Centre to both sides hole packed plane (10) is gradually increased.
A kind of hypervelocity the most according to claim 1 forces kerve method without cutting hole deviation line symmetry, it is characterised in that: step
Rapid 3 drilling depths for after centre to both sides hole packed plane (10) are gradually increased reduce, blast hole stemming district (12) degree of depth be 1.2～
2m, corresponding blast hole stemming district (12) degree of depth reduces after increasing.
A kind of hypervelocity the most according to claim 1 forces kerve method without cutting hole deviation line symmetry, it is characterised in that:
During step 4, use total powerstation or three-dimensional laser scanner that demolition effect is checked each time after explosion, find with quick-fried
When broken design deflection is bigger, stopping explosion, process outstanding top from ore removal route (7) or collection ore deposit moat ditch by perforations adding, perforations adding processes
Followed by blasting hole, until kerf blasting is fully completed.
Priority Applications (1)
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| CN107587889A (en) * | 2017-08-30 | 2018-01-16 | 玉溪大红山矿业有限公司 | A kind of construction method worn arteries and veins cutting groove and cross chamber reinforcing bar open wiring mouth |
| CN108627057A (en) * | 2017-03-18 | 2018-10-09 | 南京梅山冶金发展有限公司 | A kind of big thick ore body kerf blasting method |
| CN111441774A (en) * | 2020-04-15 | 2020-07-24 | 长沙矿山研究院有限责任公司 | Groove pulling method for upper and lower hole combined non-cutting well |
| CN111595213A (en) * | 2020-04-21 | 2020-08-28 | 安徽金日晟矿业有限责任公司 | Application of non-cutting raise grooving method in blasting stope |
| CN111749695A (en) * | 2020-06-28 | 2020-10-09 | 玉溪大红山矿业有限公司 | Safe and efficient shallow hole room-pillar mining method |
| CN111997615A (en) * | 2020-08-17 | 2020-11-27 | 海南矿业股份有限公司 | Short raise and wedge-shaped blast hole combined slot-drawing method |
| CN112683117A (en) * | 2020-12-23 | 2021-04-20 | 莱芜莱新铁矿有限责任公司 | Construction method for slot-drawing blasting without well cutting |
| CN113108657A (en) * | 2021-04-20 | 2021-07-13 | 白银有色集团股份有限公司 | Metal mine medium-length hole blasting parameter optimization |
| CN114812313A (en) * | 2022-05-05 | 2022-07-29 | 河北钢铁集团矿业有限公司 | Application of blasting slot-drawing method in metal mine underground stope |
| CN115012938A (en) * | 2022-05-17 | 2022-09-06 | 安徽金日晟矿业有限责任公司 | Non-cutting raise deep hole slot-drawing blasting ore-breaking mining method |
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| CN108627057B (en) * | 2017-03-18 | 2021-02-09 | 南京梅山冶金发展有限公司 | Slot-drawing blasting method for thick and large ore body |
| CN108627057A (en) * | 2017-03-18 | 2018-10-09 | 南京梅山冶金发展有限公司 | A kind of big thick ore body kerf blasting method |
| CN107587889B (en) * | 2017-08-30 | 2019-03-19 | 玉溪大红山矿业有限公司 | A kind of construction method worn arteries and veins cutting groove and cross chamber reinforcing bar open wiring mouth |
| CN107587889A (en) * | 2017-08-30 | 2018-01-16 | 玉溪大红山矿业有限公司 | A kind of construction method worn arteries and veins cutting groove and cross chamber reinforcing bar open wiring mouth |
| CN111441774B (en) * | 2020-04-15 | 2021-05-14 | 长沙矿山研究院有限责任公司 | Groove pulling method for upper and lower hole combined non-cutting well |
| CN111441774A (en) * | 2020-04-15 | 2020-07-24 | 长沙矿山研究院有限责任公司 | Groove pulling method for upper and lower hole combined non-cutting well |
| CN111595213A (en) * | 2020-04-21 | 2020-08-28 | 安徽金日晟矿业有限责任公司 | Application of non-cutting raise grooving method in blasting stope |
| CN111749695A (en) * | 2020-06-28 | 2020-10-09 | 玉溪大红山矿业有限公司 | Safe and efficient shallow hole room-pillar mining method |
| CN111749695B (en) * | 2020-06-28 | 2022-05-20 | 玉溪大红山矿业有限公司 | Safe and efficient shallow hole room-and-pillar mining method |
| CN111997615A (en) * | 2020-08-17 | 2020-11-27 | 海南矿业股份有限公司 | Short raise and wedge-shaped blast hole combined slot-drawing method |
| CN112683117A (en) * | 2020-12-23 | 2021-04-20 | 莱芜莱新铁矿有限责任公司 | Construction method for slot-drawing blasting without well cutting |
| CN113108657A (en) * | 2021-04-20 | 2021-07-13 | 白银有色集团股份有限公司 | Metal mine medium-length hole blasting parameter optimization |
| CN114812313A (en) * | 2022-05-05 | 2022-07-29 | 河北钢铁集团矿业有限公司 | Application of blasting slot-drawing method in metal mine underground stope |
| CN114812313B (en) * | 2022-05-05 | 2024-03-01 | 河北钢铁集团矿业有限公司 | Application of blasting slot-drawing method in underground stope of metal mine |
| CN115012938A (en) * | 2022-05-17 | 2022-09-06 | 安徽金日晟矿业有限责任公司 | Non-cutting raise deep hole slot-drawing blasting ore-breaking mining method |
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