CN85105789A - New method for cutting marble and granite, and in-hole energy-gathering device and cutter application - Google Patents
New method for cutting marble and granite, and in-hole energy-gathering device and cutter application Download PDFInfo
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- CN85105789A CN85105789A CN85105789.6A CN85105789A CN85105789A CN 85105789 A CN85105789 A CN 85105789A CN 85105789 A CN85105789 A CN 85105789A CN 85105789 A CN85105789 A CN 85105789A
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- hole
- cutter
- blasting
- tube
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000004579 marble Substances 0.000 title claims abstract description 21
- 239000010438 granite Substances 0.000 title claims abstract description 16
- 238000005520 cutting process Methods 0.000 title claims abstract description 11
- 238000005422 blasting Methods 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000007787 solid Substances 0.000 claims abstract description 4
- 239000002360 explosive Substances 0.000 claims description 20
- 238000004880 explosion Methods 0.000 claims description 12
- 230000001186 cumulative effect Effects 0.000 claims description 11
- 239000011435 rock Substances 0.000 claims description 11
- 239000002699 waste material Substances 0.000 claims description 8
- 238000011084 recovery Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 4
- 238000010304 firing Methods 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims 1
- 238000005065 mining Methods 0.000 abstract description 7
- 238000005474 detonation Methods 0.000 abstract description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 239000003814 drug Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 206010061245 Internal injury Diseases 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 206010025482 malaise Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
A new method for cutting marble and granite. After holes are reasonably distributed according to mining needs, an in-hole double-sided energy gathering cutter consisting of novel in-hole hemispherical energy gathering charge devices is placed into the holes, and after detonation is carried out in a certain sequence, the rough material can be cut into a preset shape, so that the cost is reduced by 40%, the mining benefit is improved by about 20 times, and mineral resources are greatly saved. The invention is suitable for blasting solid media, in particular to controlled blasting which needs to cut the media into certain shapes. The method can be applied to roadway smooth blasting, strip mine slope blasting and other various presplitting blasting and demolition blasting.
Description
The present invention relates to a kind of new cutting marble, the method for granite, and relate to the essential means of this cutting method-a kind of two-sided CUMULATIVE BLASTING equipment and uses thereof.
Marble and granite are more and more paid attention to by people as architectural constructional materials.At present, marble is not only domestic construction material in short supply, and is the best-selling item of outlet.China's marble, granite resource enrich, and the marble storage capacity accounts for the No. 1 in the world.But China's marble, granite exploitation, processing are very backward, and particularly mining is more backward.Known recovery method has: manually beat wedge method, black powder blast method, mining explosive blasting procedure, person of modern times's blasting procedure, static crushing method, machine instruction statement mining method, these methods are used for the marble exploitation, and a lot of drawbacks are all arranged.The labour intensity that has is big, speed is low, the waste material of exploitation is little, has reduced economic worth; The bad control of the dose that has, rock fracture is difficult to artificial control, and resource is had certain destruction, and transportation, keeping, powder charge feels unwell entirely; The cost of winning height that has, the seal request strictness of big gun hole brings difficulty to execute-in-place; Or the like.Take all factors into consideration, the effect of existing method is all undesirable.
Task of the present invention is to provide a kind of new marble, the waste material of granite to cut mining method open.It utilizes two-sided beehive-shaped charge cutter to carry out explosion, once marble, granite is cut into the famine material of required shape.
Below with reference to accompanying drawing background of invention and invention are explained in detail.
Fig. 1. be the background technology-wedge shape loaded constitution of power-assembling figure the most approaching with the present invention.
Fig. 2. be the two-sided beehive-shaped charge device of hemispherical of the present invention profile.
Fig. 3. be powder charge schematic diagram in the hole.
Fig. 4. be hole inner cutter profile.
Fig. 5. be marble granite exploitation borehole plane.
In order to make full use of marble, granite resource, just require the aperture in institute cutter big gun hole less, be that the means for loading volume is very little, want it to have the explosion energy of high concentration simultaneously, can artificially control rock fracture, explosion fashion need guarantee the stability of country rock as far as possible, and known charge constitution does not all reach this requirement.A kind of two-sided loaded constitution of power-assembling has been described, as shown in Figure 1 in 8 or five year second phase " explosive ".It is the wedge shape drug-shaped cover (2) that has added 0.5 millimeters thick on the cumulative direction, after detonating, though the length that its cumulative direction is destroyed is tens times to twenties times of two side direction reamings, substantially exceeded the demolition effect of the seventies Japan Patent ABS method, but because its height of burst is 2 times of the medicine footpath, it is used is disadvantageous in aperture.And big utilization, engineering progress and the reduction preliminary of beating to the building stones resource is disadvantageous.Moreover this structure itself since explosion time jet cumulative point-blank, cutting power is subjected to certain restriction.So one of task of the present invention provides a kind of device of novel two-sided beehive-shaped charge, constitutes a kind of hole inner cutter thus and studies its range of application, be particularly suitable for the cutting exploitation of marble, the waste material of granite.
Task of the present invention is finished as follows
With reference to Fig. 2, device is made of the condensed phase explosive (3) of tube-like envelope (5), cavity liner (4), industrial use and the primacord (6) that is arranged on the perpendicular bisector.Cavity liner (4) preferably adopts hemispherical, after explosive is pressed into tube chamber, gets lodged in the two ends of tube-like envelope (5) respectively with two cavity liners.The material of shell can be selected the tube of different shapes such as iron pipe, paper tube, plastic tube, various materials for use.And if do shell with waste and old iron running water pipe, not only utilized refuse, and drawn materials, process all very convenient.
The present invention has sufficiently and reasonably utilized explosive energy, and it can do very for a short time, is fit to fully use in the aperture.Because as shown in Figure 3, detonation wave is propagated to the left and right after detonating in the powder stick center, arrives on the energy gathering cap and has just produced two strands of opposite metal jets.Because drug-shaped cover adopts hemispherical, detonation wave converges bump along hurried the moving of the normal direction of hemispherical type on axis, form very desirable jet.Reach the purpose that the energy topnotch is concentrated, go up at hole wall (5) and produce two cumulative holes (8).And the desirable height of burst of this hemispheric medicine cover very little (only be medicine footpath 0.5 times) just is more suitable for using in the aperture compared with the wedge shape cover.The effect of tube-like envelope is that the side direction that reduces explosive energy is dispersed, and stops the invasion of dilatational wave, and both direction is concentrated to the left and right to force explosive energy.Because the strong constraint of shell makes the energy of jet increase, and improves execution greatly.The effect of shell also has one: because side direction is tied, see Fig. 3, the energy of explosive is less from side direction release, and the space of side direction is bigger than cumulative director space simultaneously, and shock wave attenuation is fast, and is therefore very favourable to the protection of side direction hole wall.So just accomplished that needing to destroy part destroys as best one can, should not destroy part and be protected as best one can.This is the basic place that this device is different from other charge constitution, is that the conventional charge structure is beyond one's reach.
Fig. 4 is the jet cutter profile of inserting in the big gun hole.Jet cutter is that single two-sided cumulative device (12) is stringed together from the center by primacord (6), be fixed in the shell (13) that different shape makes with the material that has certain intensity, install detonator (9) on the primacord additional, its length is determined according to the cutting needs.It is long one also can to make some centimetres, docks one by one by actual needs during use, and at this moment, two cutter joints will add the propagation of explosion medicament.
From Fig. 4 a as can be seen, each device but can both be worn two rightabout cumulative holes (8), because the hole is worn very deeply, selects suitably as device (12) distance, just can produce crack (11) on the line in cumulative hole, sees Fig. 4 b.Because rock is a kind of fragile material, as long as crack one produces, under the effect of explosive detonation gas pressure, just rock may be drawn back along fractuer direction, reach very good demolition effect.If other solid kind medium of blast as long as select suitable explosive payload and device (12) distance, also can reach the purpose of anticipation.
This jet cutter of being made up of the two-sided beehive-shaped charge device of hemispherical in the hole, the explosive payload in its unit volume big gun hole is determined by following formula.
k
Lc-plane fracture toughness (kgf/(centimetre)
)
A-big gun pore radius (centimetre)
B-two pitchs of holes half (centimetre)
P
c-explosion gas static pressure (kgf/centimetre
2)
P
k-critical pressure P
k=2000 kgfs/centimetre
2
R-gas exponent of adiabatic expansion r=1.4
K-explosive isentropic index
ρ
o-explosive density (gram per centimeter
2)
The d-penetration of fracture
α, β-undetermined coefficient
The size of Δ is with rock mechanics properties K
Lc, the kind of explosive, penetration depth d, big gun pore radius a and pitch of holes b are relevant, and it only is 1/10 times of common decoupling charge amount, and this not only saves a large amount of explosives, and can reduce the public hazards of explosion, reduces the internal injury of medium, the raising of favourable building stones lumber recovery.
Being of wide application of this hole cohesive energy cutter is general, and it is applicable to the explosion of solid kind medium, is particularly useful for needing medium is cut into the controlled blasting of definite shape.Better to rock type medium demolition effect, applicable to the tunnel photoface exploision, open-pit slope explosion and other various presplit blastings and demolition blasting are only optimum and use it for the cutting exploitation of marble, the waste material of granite aspect mining.It can once cut into predetermined shape with marble, granite, saving of labor, material-saving, saves time, and does not cause the waste of resource.Provide reliably for finishing task of the present invention, effective means.
Task of the present invention-cutting marble new method-finish as follows.With reference to Fig. 5, the marble of its expression is exploited the situation in vertical cloth hole, according to the exploitation needs, is carved with vertical hole (9) and transverse holes (10), still needs below working bench and wants cloth one row of horizontal hole.
Will note aiming at cut direction when inserting cutter in the big gun hole, after inserting, the aperture will be blocked up with paste, also can gather materials on the spot and block up with yellow mud.Preferably vertical hole (9) of firing order and lateral aperture are ignited at first simultaneously, and then the transverse holes of detonating (10), and rock is cut into our needed square, and this firing order can be used short-delay blasting, also can divide several times and detonate.
This invention can be used on big mine, also can be used on little place, is not subjected to condition restriction, as long as can just can achieve the goal by blast hole drilling. Practice shows that explosive payload of the present invention is few, and the hole of setting off firecrackers is few simple to operate, As long as require operation according to blasting technique, safety can guarantee. Its maximum characteristics are to produce simultaneously two opposite cumulative holes with a device, are conducive to the generation in crack. Because explosive energy is subjected to the constraint of shell, favourable concentrating, thus can guarantee the stability of country rock, so blast cost is few, quality is high, speed is fast. In marble and granite exploitation, can improve at least production efficiency more than 20 times than the man-made recovery.
Claims (14)
1, the two-sided beehive-shaped charge device of a kind of hemispherical, by cavity liner, the condensed phase explosive that is used for industry constitutes, it is characterized in that it has a tube-like envelope (5), wherein fill up industrial condensed phase explosive (3), each blocks up semi-spherical liner (4) two ends, and is arranged on the primacord (6) on the perpendicular bisector.
2, a kind of as the said device of claim 1, it is characterized in that the tube of said tube-like envelope (5) for different shapes such as iron pipe, paper tube, plastic tube, various materials.
3, a kind of as the said device of claim 2, it is characterized in that said tube is waste and old running water pipe.
4, a kind of as two-sided jet cutter in the hole of the said device composition of claim 1, it is characterized in that single two-sided cumulative device (12) is stringed together from the center by primacord (6), be fixed in the shell (13), cutter length is determined according to the cutting needs.
5, a kind of as two-sided jet cutter in the said hole of claim 4, it is characterized in that said shell (13) has different shape, be to make by the material that has certain intensity.
6, a kind ofly it is characterized in that being made into one of some centimeters length as two-sided jet cutter in the said hole of claim 5, during use according to actual needs one by one butt joint get up.
7, a kind of as the said cutter of one of claim 4 to 6, it is characterized in that the explosive payload in its unit volume big gun hole is determined by following formula:
8, a kind of purposes as the said cutter of claim 7 is characterized in that it is suitable for the explosion of solid kind medium, especially is suitable for the controlled blasting that needs medium is cut into definite shape.
9, a kind of purposes as the said cutter of claim 8 is characterized in that it is applicable to the explosion of rock type medium, especially is suitable for the controlled blasting that needs rock is cut into definite shape.
10, a kind of purposes as the said cutter of claim 9 is characterized in that it is applicable to the tunnel photoface exploision, and open-pit slope explosion and other various presplit blastings and demolition blasting are particularly useful for marble, the orientation exploitation of the waste material of granite, cutting.
11, a kind of recovery method as the said cutter purposes of claim 8, when it is characterized in that exploiting except that vertical direction cloth hole, dig vertical hole (9) and the transverse holes (10), still will be below working bench cloth one row of horizontal hole.
12, a kind of as the said recovery method of claim 11, to aim at cut direction when it is characterized in that holding hole cohesive energy cutter, the aperture will be blocked up with paste, and detonating to have a definite sequence.
13, a kind of as the said recovery method of claim 12, it is characterized in that the aperture blocks up with yellow mud, firing order is that vertical hole (9) and lateral aperture detonate at first simultaneously, and then the transverse holes of detonating (10).
14, a kind of as the said recovery method of one of claim 11 to 13, it is characterized in that firing order can use short-delay blasting, also can divide several times and detonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85105789 CN1029756C (en) | 1985-07-25 | 1985-07-25 | Method to cut marble and granite, device to concentrate energy in hole and cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85105789 CN1029756C (en) | 1985-07-25 | 1985-07-25 | Method to cut marble and granite, device to concentrate energy in hole and cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85105789A true CN85105789A (en) | 1987-03-25 |
| CN1029756C CN1029756C (en) | 1995-09-13 |
Family
ID=4794708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85105789 Expired - Fee Related CN1029756C (en) | 1985-07-25 | 1985-07-25 | Method to cut marble and granite, device to concentrate energy in hole and cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1029756C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035839C (en) * | 1992-11-23 | 1997-09-10 | 国家建材局苏州非金属矿工业设计研究院 | Controlled blasting and quarrying method for facing stone |
| CN100455978C (en) * | 2006-09-06 | 2009-01-28 | 何满潮 | Bidirectional energy gathering tension shaping blasting cartridge |
| CN102538604A (en) * | 2011-11-30 | 2012-07-04 | 中北大学 | Double-focusing linear jet cutter |
| CN103144205A (en) * | 2011-12-06 | 2013-06-12 | 兰州大学 | Circular disc for cutting concrete pipe |
| CN107060773A (en) * | 2017-04-28 | 2017-08-18 | 广东省长大公路工程有限公司 | A kind of underground chamber drilling and blasting method damping excavation method of static(al) explosion presplitting shock insulation |
| CN107091600A (en) * | 2017-04-07 | 2017-08-25 | 安徽理工大学 | A kind of linear orientation jet cutter |
| CN110847910A (en) * | 2019-12-06 | 2020-02-28 | 何满潮 | Method for cutting top of hard top plate by adopting instant bursting device capable of breaking one surface and completing one surface |
| CN111238329A (en) * | 2020-03-02 | 2020-06-05 | 何满潮 | Method for performing geometric forming blasting on semi-coal rock roadway by adopting instantaneous bursting device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324212C (en) * | 2005-11-03 | 2007-07-04 | 中国人民解放军理工大学工程兵工程学院 | Linear energy connectracting cutting disassembling method of steel structured factory building |
-
1985
- 1985-07-25 CN CN 85105789 patent/CN1029756C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035839C (en) * | 1992-11-23 | 1997-09-10 | 国家建材局苏州非金属矿工业设计研究院 | Controlled blasting and quarrying method for facing stone |
| CN100455978C (en) * | 2006-09-06 | 2009-01-28 | 何满潮 | Bidirectional energy gathering tension shaping blasting cartridge |
| CN102538604A (en) * | 2011-11-30 | 2012-07-04 | 中北大学 | Double-focusing linear jet cutter |
| CN103144205A (en) * | 2011-12-06 | 2013-06-12 | 兰州大学 | Circular disc for cutting concrete pipe |
| CN103144205B (en) * | 2011-12-06 | 2015-12-02 | 兰州大学 | Pipe of concrete cutting disc |
| CN107091600A (en) * | 2017-04-07 | 2017-08-25 | 安徽理工大学 | A kind of linear orientation jet cutter |
| CN107060773A (en) * | 2017-04-28 | 2017-08-18 | 广东省长大公路工程有限公司 | A kind of underground chamber drilling and blasting method damping excavation method of static(al) explosion presplitting shock insulation |
| CN110847910A (en) * | 2019-12-06 | 2020-02-28 | 何满潮 | Method for cutting top of hard top plate by adopting instant bursting device capable of breaking one surface and completing one surface |
| CN110847910B (en) * | 2019-12-06 | 2021-07-13 | 何满潮 | Method for cutting top of hard top plate by adopting instant bursting device capable of breaking one surface and completing one surface |
| CN111238329A (en) * | 2020-03-02 | 2020-06-05 | 何满潮 | Method for performing geometric forming blasting on semi-coal rock roadway by adopting instantaneous bursting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1029756C (en) | 1995-09-13 |
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