CN105486181B - Vertical shaft deep-hole step blasting method - Google Patents
Vertical shaft deep-hole step blasting method Download PDFInfo
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- CN105486181B CN105486181B CN201510802242.7A CN201510802242A CN105486181B CN 105486181 B CN105486181 B CN 105486181B CN 201510802242 A CN201510802242 A CN 201510802242A CN 105486181 B CN105486181 B CN 105486181B
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- 238000005422 blasting Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000010276 construction Methods 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims description 22
- 238000005553 drilling Methods 0.000 claims description 20
- 239000011435 rock Substances 0.000 claims description 18
- 238000004880 explosion Methods 0.000 claims description 13
- 239000003999 initiator Substances 0.000 claims description 7
- 238000005474 detonation Methods 0.000 claims description 5
- 230000000977 initiatory effect Effects 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 238000003908 quality control method Methods 0.000 abstract description 2
- 230000000295 complement effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- -1 wherein Substances 0.000 description 1
Classifications
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Earth Drilling (AREA)
Abstract
The present invention provides a kind of vertical shaft deep-hole step blasting method, the method combines the shallow eye borehole wall Quality Control Technology in outer ring, interval combination of the double tube positive and negative to Charge and two grades of straight eye stagewise slotting technologies by periphery hole is taken to 5m longhole controlled blastings, the blast hole utilization factor of vertical shaft 5m longhole controlled blastings is made up to more than 90%, to improve demolition effect, engineering cost is reduced, the construction period is saved.
Description
Technical field
The present invention relates to vertical shaft blasting technique field, more specifically, is related to a kind of vertical shaft deep-hole step blasting method.
Background technology
Most domestic vertical shaft is constructed using the construction method that short section digs block mixture operation at present, as shown in figure 1, adopting
During with this construction method, it is the rock drilling space for ensureing umbrella brill, is stayed between the supporting borehole wall 1 and rock drilling work surface 3 in pit shaft and set one
The exposed borehole wall 2 of section, the height of this section of exposed borehole wall 2 is that section is high.Due to explosion drilling depth have uncertainty, cause supporting drilling depth with
Explosion drilling depth cannot keep completely the same, therefore, section is high to be also continually changing.Due to 5m Deep-hole Controlled Blasting boreholes it is too deep, and
Got out by umbrella and a little limited (go out to bore point and ensure a certain distance with the exposed borehole wall 2), if in drilling work face periphery hole not
Consider that the high size of section presses same angle rock drilling, seriously deficient digging or bottom are seriously backbreak to cause 2 top of the exposed borehole wall.If naked
The dew borehole wall 2 is owed to dig, and needs to mend and digs, so as to affect construction speed, if the exposed borehole wall 2 is backbreak, needs the part that will be backbreak to fill out
Fill with, cause the waste of raw material.
In addition, above-mentioned construction method typically carries out explosion using 4.5m boreholes at a depth below, single digging footage is general
Less than 4m, blast hole utilization factor is low.
The content of the invention
In view of the above problems, it is an object of the invention to provide a kind of vertical shaft deep-hole step blasting method, to solve the above-mentioned back of the body
Problem proposed in scape technology.
The present invention provides a kind of vertical shaft deep-hole step blasting method, including borehole construction stage, blashole charge stage and rises
The quick-fried stage；Wherein,
The borehole construction stage, including：
Center with rock drilling work surface, is carried out as the center of circle on nine circumference for being formed based on the center of circle from inside to outside successively
The slotting of borehole, and first lap and the second circle are snubber, it is 90 ° ± 1 ° for 5.2m～5.4m, eye inclination angle that the eye of snubber is deep；
3rd encloses to the 7th circle as reliever, and it is 90 ° ± 1 ° for 5m～5.1m, eye inclination angle that the eye of reliever is deep；8th circle is periphery hole,
9th circle is the shallow eye in outer ring；And, the exposed distance between rock drilling work surface and the supporting borehole wall is that section is high；Wherein,
In a height of 2～2.5m of section, the circle footpath of periphery hole is 10000～13000mm, and eye is deep for 5m～5.1m, eye inclination angle
For 100 ° ± 1 °, and periphery hole is evenly arranged on the circumference of the 8th circle；The circle footpath of the shallow eye in outer ring be 10000～13000mm, eye
Deep is 1.7m ± 0.1m, and eye inclination angle is 105 ° ± 1 °, and the shallow eye in outer ring is evenly arranged on the circumference of the 9th circle；
In a height of 2.5～3m of section, the circle footpath of periphery hole is 10000～13000mm, and eye is deep for 5m～5.1m, eye inclination angle
For 99 ° ± 1 °, and periphery hole is evenly arranged on the circumference of the 8th circle；The circle footpath of the shallow eye in outer ring be 10000～13000mm, eye
Deep is 1.9m ± 0.1m, and eye inclination angle is 103 ° ± 1 °, and the shallow eye in outer ring is evenly arranged on the circumference of the 9th circle；
In a height of 3～3.5m of section, the circle footpath of periphery hole is 10000～13000mm, and eye is deep for 5m～5.1m, eye inclination angle
For 98 ° ± 1 °, and periphery hole is evenly arranged on the circumference of the 8th circle；The circle footpath of the shallow eye in outer ring be 10000～13000mm, eye
Deep is 2m ± 0.1m, and eye inclination angle is 101 ° ± 1 °, and the shallow eye in outer ring is evenly arranged on the circumference of the 9th circle；
In a height of 3.5～4m of section, the circle footpath of periphery hole is 10000～13000mm, and eye is deep for 5m～5.1m, eye inclination angle
For 97 ° ± 1 °, and periphery hole is evenly arranged on the circumference of the 8th circle；The circle footpath of the shallow eye in outer ring be 10000～13000mm, eye
Deep is 2.2m ± 0.1m, and eye inclination angle is 99 ° ± 1 °, and the shallow eye in outer ring is evenly arranged on the circumference of the 9th circle；
In a height of 4～5m of section, the slotting of periphery hole is only carried out, the circle footpath of periphery hole is 10000～13000mm, eye is deep
For 5m～5.1m, eye inclination angle is 97 ° ± 1 °, and periphery hole is evenly arranged on the circumference of the 8th circle；
In a height of 5～6m of section, the slotting of periphery hole is only carried out, the circle footpath of periphery hole is 10000～13000mm, eye is deep
For 5m～5.1m, eye inclination angle is 97 ° ± 1 °, and periphery hole is evenly arranged on the circumference of the 8th circle；
The blashole charge stage, including：
The snubber of first lap and the second circle is the forward and reverse powder charge of double detonator, and powder charge is divided into two sections in each detonator,
Every section of loaded length is 2m～2.5m, and middle gap stemming, the top of the snubber of first lap fill the 1st section of detonator, the
The bottom of the snubber of one circle fills the 2nd section of detonator；The top of the snubber of the second circle fills the 3rd section of detonator, the snubber of the second circle
Bottom fill the 4th section of detonator；
Adjacent two reliever is enclosed often, one of them is double detonator positive direction powder charge, another is reversely filled for single detonator
In medicine, and detonator, loaded length is 3.5m～4m；And, the reliever of the 3rd circle fills the 5th section of detonator；The reliever dress of the 4th circle
6th section of detonator；The reliever of the 5th circle fills the 7th section of detonator；The reliever of the 6th circle fills the 8th section of detonator, the reliever of the 7th circle
Fill the 8th section of detonator；
The shallow eye of periphery hole and outer ring adopts the forward and reverse powder charge of double detonator, and the shallow eye of periphery hole and outer ring fills the 9th section of thunder
Pipe；
The detonation stage, including：
One end of primacord is connected with each section of detonator, the other end is connected with initiator, operation initiator completes work surface
Explosion.
Using above-mentioned vertical shaft deep-hole step blasting method of the invention, by the basis of periphery hole complement outer ring it is shallow
Eye the quality according to the method for the section height adjustment parameter control borehole wall, in addition, the present invention carries out explosion using 5m longholes so that big gun
Eye utilization rate reaches more than 90%, can prevent blind big gun, the generation of residual big gun accident.
In order to realize above-mentioned and related purpose, the one or more aspects of the present invention include will be explained in below and
The feature particularly pointed out in claim.Description below and accompanying drawing are described in detail some illustrative aspects of the present invention.
However, some modes in the various modes that can only use principle of the invention indicated in terms of these.Additionally, of the invention
It is intended to include all these aspects and their equivalent.
Description of the drawings
By reference to the explanation below in conjunction with accompanying drawing and the content of claims, and with to the present invention more comprehensively
Understand, other purposes and result of the present invention will be more apparent and should be readily appreciated that.In the accompanying drawings：
Rock drilling schematic diagrams of the Fig. 1 for prior art；
Fig. 2 is the longitudinal sectional drawing of the rock drilling work surface borehole according to the embodiment of the present invention；
Fig. 3 is the location diagram of the periphery hole according to the embodiment of the present invention and the shallow eye in outer ring；
Fig. 4 is the powder charge schematic diagram of the rock drilling work surface borehole according to the embodiment of the present invention.
Reference therein includes：The shallow eye of the supporting borehole wall 1, the exposed borehole wall 2, rock drilling work surface 3, periphery hole 4, outer ring 5.
Identical label indicates similar or corresponding feature or function in all of the figs.
Specific embodiment
The specific embodiment of the present invention is described in detail below with reference to accompanying drawing.
Explanation of nouns：
Eye inclination angle：Umbrella bores the angle of working arm and rock drilling work surface.
Burn cut：Snubber is each perpendicular to driving face, to each other away from less, and has the slotting side of not powder charge sky eye
Formula.
Snubber：The borehole of the various types formed in slotting process is referred to, can be rock, the arrangement for collapsing lower work surface
Other boreholes create good conditions.
Reliever：The borehole of Drilling between snubber and periphery hole.
Periphery hole：It is the borehole for being arranged in roadway surrounding near crag.
The shallow eye in outer ring：Refer to the ophthalmically acceptable borehole in control borehole wall quality of secondary peripheral.
Circle footpath, the diameter of a circle surrounded by borehole.
The vertical shaft deep-hole step blasting method that the present invention is provided, including borehole construction stage, blashole charge stage and detonation
Stage.Separately below borehole construction stage, blashole charge stage and detonation stage are described in detail.
First, the borehole construction stage
In order to solve the problems, such as that blast hole utilization factor is low, the present invention carries out explosion using the borehole depth of more than 5m, also, draws
Slotted eyes is arranged as the straight eye of second order.Specifically, as shown in Figure 2 (in figure, the unit of numeral is mm), the center with rock drilling work surface is
The center of circle, on nine circumference for being formed based on the center of circle from inside to outside, is carried out the slotting of borehole successively, and first lap and the second circle is
Snubber, it is 90 ° ± 1 ° for 5.2m～5.4m, eye inclination angle that the eye of snubber is deep；3rd encloses to the 7th circle as reliever, reliever
Eye it is deep for 5m～5.1m, eye inclination angle be 90 ° ± 1 °；8th circle is periphery hole, and the 9th circle is the shallow eye in outer ring；Wherein,
1st, first lap snubber
The circle footpath of the snubber of first lap is 1600～1900mm, and eye is deep to be preferably 5.2m, and the snubber of first lap is equal
It is even to be arranged on the circumference of first lap.
For the snubber of first lap, invention shows three examples：
Example one：
The circle footpath of the snubber of first lap is 1600mm, and eye spacing is 390mm, and the quantity of the snubber of first lap is 13
It is individual.
Example two：
The circle footpath of the snubber of first lap is 1800mm, and eye spacing is 404mm, and the quantity of the snubber of first lap is 14
It is individual.
Example three：
The circle footpath of the snubber of first lap is 1900mm, and eye spacing is 420mm, and the quantity of the snubber of first lap is 15
It is individual.
2nd, the second circle snubber
The circle footpath of the snubber of the second circle is 2200～2500mm, and eye is deep to be preferably 5.2m, and the snubber of the second circle is equal
It is even to be arranged on the circumference of the second circle.
Three instantiations of snubber of the second circle are：
Example one：
The circle footpath of the snubber of the second circle is 2200mm, and eye spacing is 476mm, and the quantity of the snubber of the second circle is 14
It is individual.
Example two：
The circle footpath of the snubber of the second circle is 2400mm, and eye spacing is 503mm, and the quantity of the snubber of the second circle is 15
It is individual.
Example three：
The circle footpath of the snubber of the second circle is 2600mm, and eye spacing is 523mm, and the quantity of the snubber of the second circle is 16
It is individual.
3rd, the 3rd circle reliever
The circle footpath of the reliever of the 3rd circle is 3500～4000mm, and eye is deep to be preferably 5m, and the reliever of the 3rd circle is uniform
It is arranged on the circumference of the 3rd circle.
In invention, three instantiations of the reliever of the 3rd circle are：
Example one：
The circle footpath of the reliever of the 3rd circle is 3500mm, and eye spacing is 600mm, and the quantity of the reliever of the 3rd circle is 18
It is individual.
Example two：
The circle footpath of the reliever of the 3rd circle is 3780mm, and eye spacing is 625mm, and the quantity of the reliever of the 3rd circle is 19
It is individual.
Example three：
The circle footpath of the reliever of the 3rd circle is 4000mm, and eye spacing is 650mm, and the quantity of the reliever of the 3rd circle is 20
It is individual.
4th, the 4th circle reliever
The circle footpath of the reliever of the 4th circle is 5000～5500mm, and eye is deep to be preferably 5m, and the reliever of the 4th circle is uniform
It is arranged on the circumference of the 4th circle.
In three examples shown in the present invention it is：
The circle footpath of the reliever of the 4th circle is 5000mm, and eye spacing is 635mm, and the quantity of the reliever of the 4th circle is 22
It is individual.
The circle footpath of the reliever of the 4th circle is 5160mm, and eye spacing is 703mm, and the quantity of the reliever of the 4th circle is 23
It is individual.
The circle footpath of the reliever of the 4th circle is 5500mm, and eye spacing is 703mm, and the quantity of the reliever of the 4th circle is 24
It is individual.
5th, the 5th circle reliever
The circle footpath of the reliever of the 5th circle is 6500～7000mm, and eye is deep to be preferably 5m, and the reliever of the 5th circle is uniform
It is arranged on the circumference of the 5th circle.
In three examples shown in the present invention it is：
Example one：
The circle footpath of the reliever of the 5th circle is 6500mm, and eye spacing is 600mm, and the quantity of the reliever of the 5th circle is 28
It is individual.
Example two：
The circle footpath of the reliever of the 5th circle is 6640mm, and eye spacing is 694mm, and the quantity of the reliever of the 5th circle is 30
It is individual.
Example three：
The circle footpath of the reliever of the 5th circle is 7000mm, and eye spacing is 738mm, and the quantity of the reliever of the 5th circle is 31
It is individual.
6th, the 6th circle reliever
The circle footpath of the reliever of the 6th circle is 8000～8500mm, and eye is deep to be preferably 5m, and the reliever of the 6th circle is uniform
It is arranged on the circumference of the 6th circle.
Three examples shown in the present invention are：
Example one：
The circle footpath of the reliever of the 6th circle is 8000mm, and eye spacing is 664mm, and the quantity of the reliever of the 6th circle is 35
It is individual.
Example two：
The circle footpath of the reliever of the 6th circle is 8120mm, and eye spacing is 708mm, and the quantity of the reliever of the 6th circle is 36
It is individual.
Example three：
The circle footpath of the reliever of the 6th circle is 8500mm, and eye spacing is 775mm, and the quantity of the reliever of the 6th circle is 37
It is individual.
7th, the 7th circle reliever
The circle footpath of the reliever of the 7th circle is 9500～9900mm, and eye is deep to be preferably 5m, and the reliever of the 7th circle is uniform
It is arranged on the circumference of the 7th circle.
The 7th three examples for enclosing reliever are shown in of the invention, respectively：
Example one：
The circle footpath of the reliever of the 7th circle is 9500mm, and eye spacing is 680mm, and the quantity of the reliever of the 7th circle is 42
It is individual.
Example two：
The circle footpath of the reliever of the 7th circle is 9600mm, and eye spacing is 700mm, and the quantity of the reliever of the 7th circle is 43
It is individual.
Example three：
The circle footpath of the reliever of the 7th circle is 9900mm, and eye spacing is 800mm, and the quantity of the reliever of the 7th circle is 44
It is individual.
8th, the shallow eye of the 8th circle periphery hole and the 9th circle outer ring
In order to prevent, borehole wall top seriously owes to dig or bottom is seriously backbreak, and the present invention is using the complement on the basis of periphery hole
The shallow eye in outer ring, and the high height of reference field, according to the high height change correspondence adjustment periphery hole of section and the parameter of the shallow eye in outer ring, keep away
Exempt from the problems referred to above occur, to ensure the quality of the borehole wall.
The position relationship of the shallow eye of periphery hole and outer ring is as shown in figure 3, tool of the shallow eye of periphery hole and outer ring in different situations
Body parameter is as shown in the table：
Wherein, in a height of 2～2.5m of section, the circle footpath of periphery hole is 10000～13000mm, preferably 10260mm, eye
Deep to be preferably 5m, eye inclination angle is 100 ° ± 1 °, and periphery hole is evenly arranged on the circumference of the 8th circle；The circle footpath of the shallow eye in outer ring is
10000～13000mm, preferably 10500mm, eye are deep for 1.7m, and eye inclination angle is 105 ° ± 1 °, and the shallow eye in outer ring is evenly arranged in
On the circumference of the 9th circle.
In a height of 2.5～3m of section, the circle footpath of periphery hole is 10000～13000mm, and preferably 10360mm, eye are deep preferably
For 5m, eye inclination angle is 99 ° ± 1 °, and periphery hole is evenly arranged on the circumference of the 8th circle；The circle footpath of the shallow eye in outer ring be 10000～
13000mm, preferably 10660mm, eye are deep for 1.9m, and eye inclination angle is 103 ° ± 1 °, and the shallow eye in outer ring is evenly arranged in the 9th circle
Circumference on.
In a height of 3～3.5m of section, the circle footpath of periphery hole is 10000～13000mm, and preferably 10494mm, eye are deep preferably
For 5m, eye inclination angle is 98 ° ± 1 °, and periphery hole is evenly arranged on the circumference of the 8th circle；The circle footpath of the shallow eye in outer ring be 10000～
13000mm, preferably 10800mm, eye are deep for 2m, and eye inclination angle is 101 ° ± 1 °, and the shallow eye in outer ring is evenly arranged in the 9th circle
On circumference.
In a height of 3.5～4m of section, the circle footpath of periphery hole is 10000～13000mm, and preferably 10620mm, eye are deep preferably
For 5m, eye inclination angle is 97 ° ± 1 °, and periphery hole is evenly arranged on the circumference of the 8th circle；The circle footpath of the shallow eye in outer ring be 10000～
13000mm, preferably 10860mm, eye is deep to be preferably 2.2m, and eye inclination angle is 99 ° ± 1 °, and the shallow eye in outer ring is evenly arranged in the 9th
On the circumference of circle.
In a height of 4～5m of section, now, it is not necessary to the shallow eye in complement outer ring, the slotting of periphery hole, the circle of periphery hole are only carried out
Footpath is 10000～13000mm, preferably 10900mm, and eye is deep to be preferably 5m, and eye inclination angle is 97 ° ± 1 °, and the uniform cloth of periphery hole
Put on the circumference of the 8th circle.
In a height of 5～6m of section, it is not required that the shallow eye in complement outer ring, the slotting of periphery hole, the circle footpath of periphery hole are only carried out
For 10000～13000mm, preferably 10960mm, eye is deep to be preferably 5m, and eye inclination angle is 97 ° ± 1 °, and periphery hole is evenly arranged
On the circumference of the 8th circle.
In a specific embodiment of the present invention, the eye spacing between two periphery holes is 640mm ± 100mm, but
Not limited to this spacing.
In the another embodiment of the present invention, the diameter of the shallow eye in snubber, reliever, periphery hole and outer ring is equal
For 45mm ± 10mm, appropriate adjustment is made also dependent on practical situation.
2nd, the blashole charge stage
Before the shallow eye powder charge in snubber, reliever, periphery hole and outer ring, first the airduct of connection high-pressure blast is respectively put into and is drawn
The shallow ophthalmic in slotted eyes, reliever, periphery hole and outer ring, by snubber, reliever, periphery hole and institute outer ring shallow ophthalmic remaining water and
Rock dust is rushed to outside eye.
In first lap snubber and the second circle snubber powder charge, the snubber of first lap and the second circle is just being double detonator
Powder charge in inverse initiation, and each detonator is divided into two sections, and every section of loaded length is 2m～2.5m, as the depth of borehole is 5.2m
Therefore, two sections of centre has gap, and the gap is blocked with the stemming of 500mm, and the top of the snubber of first lap fills the 1st section of thunder
Pipe, the bottom of the snubber of first lap fills the 2nd section of detonator；The top of the snubber of the second circle fills the 3rd section of detonator, and second circle is drawn
The bottom of slotted eyes fills the 4th section of detonator；
In reliever powder charge, the reliever for often enclosing is interval double tube positive and negative to powder charge, i.e., often enclose adjacent two auxiliary
Eye, one of them is double detonator positive direction powder charge, and another is single detonator inverse initiation, and in detonator loaded length be 3.5m～
4m；And, the reliever of the 3rd circle fills the 5th section of detonator；The reliever of the 4th circle fills the 6th section of detonator；The reliever dress of the 5th circle
7th section of detonator；The reliever of the 6th circle fills the 8th section of detonator, and the reliever of the 7th circle fills the 8th section of detonator；
In periphery hole and the shallow eye powder charge in outer ring, the shallow eye of periphery hole and outer ring adopts the forward and reverse powder charge of double detonator, and week
The shallow eye of side eye and outer ring fills the 9th section of detonator；And the coefficient of charge of the shallow eye of periphery hole and outer ring is 50%.
Fig. 4 shows the powder charge situation of rock drilling work surface borehole according to embodiments of the present invention, and in Fig. 4, hollow borehole is double
The forward and reverse powder charge of detonator or two-tube positive powder charge, solid borehole are single detonator inverse initiation.
In a specific embodiment of the present invention, the interval time of the detonator of adjacent section is 250ms ± 20ms,
That is, the 2nd section detonator postpones 250ms ± 20ms than the 1st section of detonator；3rd section of detonator postpones 250ms ± 20ms than the 2nd section of detonator；The
4 sections of detonators postpone 250ms ± 20ms than the 3rd section of detonator；5th section of detonator postpones 250ms ± 20ms than the 4th section of detonator；6th section of thunder
Pipe postpones 250ms ± 20ms than the 5th section of detonator；7th section of detonator postpones 250ms ± 20ms than the 6th section of detonator；8th section of detonator ratio
7th section of detonator postpones 250ms ± 20ms；9th section of detonator postpones 250ms ± 20ms than the 8th section of detonator.
3rd, detonate the stage
One end of primacord is connected with each section of detonator, the other end is connected with initiator, wherein, initiator is arranged on well
Mouthful, after staff goes out well, operate initiator to complete the explosion of work surface.
In explosion, the 1st section of detonator explosion at first is the 2nd section of detonator blasting afterwards, by that analogy, until the 9th section of detonator
Explosion, completes whole explosions of rock drilling work surface.
The above is described in detail the vertical shaft deep-hole step blasting method of present invention offer, quick-fried by controlling to 5m longholes
It is broken to take periphery hole to combine the shallow eye borehole wall Quality Control Technology in outer ring, interval double tube positive and negative to Charge and two grades of straight eye segmentations
The combination of formula slotting technology, makes the blast hole utilization factor of vertical shaft 5m longhole controlled blastings up to more than 90%, greatly improves explosion
Effect, reduces engineering cost, saves the construction period, advances the development of vertical shaft mechanized construction technique.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (8)
1. a kind of vertical shaft deep-hole step blasting method, including borehole construction stage, blashole charge stage and detonation stage；Its feature
It is, wherein,
The borehole construction stage, including：
Center with rock drilling work surface, is carried out as the center of circle on nine circumference for being formed based on the center of circle from inside to outside successively
The slotting of borehole, and first lap and the second circle are snubber, it is 90 ° for 5.2m～5.4m, eye inclination angle that the eye of the snubber is deep
±1°；3rd encloses to the 7th circle as reliever, and it is 90 ° ± 1 ° for 5m～5.1m, eye inclination angle that the eye of the reliever is deep；8th circle
For periphery hole, the 9th circle is the shallow eye in outer ring；And, the exposed distance between the rock drilling work surface and the supporting borehole wall is that section is high；
Wherein,
In described section of a height of 2～2.5m, the circle footpath of the periphery hole is 10000～13000mm, and eye is deep for 5m～5.1m, eye
Inclination angle is 100 ° ± 1 °, and the periphery hole is evenly arranged on the circumference of the 8th circle；The circle footpath of the shallow eye in the outer ring is 10000
～13000mm, eye are deep for 1.7m ± 0.1m, and eye inclination angle is 105 ° ± 1 °, and the shallow eye in the outer ring is evenly arranged in the 9th circle
On circumference；
In described section of a height of 2.5～3m, the circle footpath of the periphery hole is 10000～13000mm, and eye is deep for 5m～5.1m, eye
Inclination angle is 99 ° ± 1 °, and the periphery hole is evenly arranged on the circumference of the 8th circle；The circle footpath of the shallow eye in the outer ring is 10000
～13000mm, eye are deep for 1.9m ± 0.1m, and eye inclination angle is 103 ° ± 1 °, and the shallow eye in the outer ring is evenly arranged in the 9th circle
On circumference；
In described section of a height of 3～3.5m, the circle footpath of the periphery hole is 10000～13000mm, and eye is deep for 5m～5.1m, eye
Inclination angle is 98 ° ± 1 °, and the periphery hole is evenly arranged on the circumference of the 8th circle；The circle footpath of the shallow eye in the outer ring is 10000
～13000mm, eye are deep for 2m ± 0.1m, and eye inclination angle is 101 ° ± 1 °, and the shallow eye in the outer ring is evenly arranged in the circle of the 9th circle
Zhou Shang；
In described section of a height of 3.5～4m, the circle footpath of the periphery hole is 10000～13000mm, and eye is deep for 5m～5.1m, eye
Inclination angle is 97 ° ± 1 °, and the periphery hole is evenly arranged on the circumference of the 8th circle；The circle footpath of the shallow eye in the outer ring is 10000
～13000mm, eye are deep for 2.2m ± 0.1m, and eye inclination angle is 99 ° ± 1 °, and the shallow eye in the outer ring is evenly arranged in the circle of the 9th circle
Zhou Shang；
In described section of a height of 4～5m, the slotting of the periphery hole is only carried out, the circle footpath of the periphery hole is 10000～
13000mm, eye are deep for 5m～5.1m, and eye inclination angle is 97 ° ± 1 °, and the periphery hole is evenly arranged on the circumference of the 8th circle；
In described section of a height of 5～6m, the slotting of the periphery hole is only carried out, the circle footpath of the periphery hole is 10000～
13000mm, eye are deep for 5m～5.1m, and eye inclination angle is 97 ° ± 1 °, and the periphery hole is evenly arranged on the circumference of the 8th circle；
The blashole charge stage, including：
The snubber of first lap and the second circle is the forward and reverse powder charge of double detonator, and powder charge is divided into two sections in each detonator, per section
Loaded length is 2m～2.5m, middle gap stemming, and the top of the snubber of first lap fills the 1st section of detonator, first lap
The bottom of snubber fill the 2nd section of detonator；The top of the snubber of the second circle fills the 3rd section of detonator, under the snubber of the second circle
Portion fills the 4th section of detonator；
Adjacent two reliever is enclosed often, one of them is double detonator positive direction powder charge, another is single detonator inverse initiation, and
In detonator, loaded length is 3.5m～4m；And, the reliever of the 3rd circle fills the 5th section of detonator；The reliever of the 4th circle fills the 6th section
Detonator；The reliever of the 5th circle fills the 7th section of detonator；The reliever of the 6th circle fills the 8th section of detonator, and the reliever of the 7th circle fills the 8th
Duan Leiguan；
The shallow eye of the periphery hole and the outer ring adopts the forward and reverse powder charge of double detonator, and the shallow eye of the periphery hole and the outer ring
9th section of detonator is filled；
The detonation stage, including：
One end of primacord is connected with each section of detonator, the other end is connected with initiator, operates the initiator to complete work surface
Explosion.
2. vertical shaft deep-hole step blasting method as claimed in claim 1, wherein,
The circle footpath of the snubber of first lap is 1600～1900mm, and the snubber of the first lap is evenly arranged in first lap
On circumference；
The circle footpath of the snubber of the second circle is 2200～2500mm, and the snubber of second circle is evenly arranged in the second circle
On circumference；
The circle footpath of the reliever of the 3rd circle is 3500～4000mm, and the reliever of the 3rd circle is evenly arranged in the 3rd circle
On circumference；
The circle footpath of the reliever of the 4th circle is 5000～5500mm, and the reliever of the 4th circle is evenly arranged in the 4th circle
On circumference；
The circle footpath of the reliever of the 5th circle is 6500～7000mm, and the reliever of the 5th circle is evenly arranged in the 5th circle
On circumference；
The circle footpath of the reliever of the 6th circle is 8000～8500mm, and the reliever of the 6th circle is evenly arranged in the 6th circle
On circumference；
The circle footpath of the reliever of the 7th circle is 9500～9900mm, and the reliever of the 7th circle is evenly arranged in the 7th circle
On circumference.
3. vertical shaft deep-hole step blasting method as claimed in claim 2, wherein,
The circle footpath of the snubber of first lap is 1800mm, and eye spacing is 404mm, and the quantity of the snubber of the first lap is 14
It is individual；
The circle footpath of the snubber of the second circle is 2400mm, and eye spacing is 503mm, and the quantity of the snubber of second circle is 15
It is individual；
The circle footpath of the reliever of the 3rd circle is 3780mm, and eye spacing is 625mm, and the quantity of the reliever of the 3rd circle is 19
It is individual；
The circle footpath of the reliever of the 4th circle is 5160mm, and eye spacing is 703mm, and the quantity of the reliever of the 4th circle is 23
It is individual；
The circle footpath of the reliever of the 5th circle is 6640mm, and eye spacing is 694mm, and the quantity of the reliever of the 5th circle is 30
It is individual；
The circle footpath of the reliever of the 6th circle is 8120mm, and eye spacing is 708mm, and the quantity of the reliever of the 6th circle is 36
It is individual；
The circle footpath of the reliever of the 7th circle is 9600mm, and eye spacing is 700mm, and the quantity of the reliever of the 7th circle is 43
It is individual.
4. the vertical shaft deep-hole step blasting method as described in any one of claim 1-3, wherein,
Before the shallow eye powder charge in the snubber, the reliever, the periphery hole and the outer ring, by the airduct of connection high-pressure blast
The snubber, the reliever, the shallow ophthalmic of the periphery hole and the outer ring are respectively put into, by the snubber, described auxiliary
The water and rock dust of the shallow ophthalmic remaining in eye, the periphery hole and the outer ring is helped to rush to outside eye.
5. vertical shaft deep-hole step blasting method as claimed in claim 4, wherein,
The coefficient of charge of the detonator of the shallow ophthalmic of the periphery hole and the outer ring is 50%.
6. vertical shaft deep-hole step blasting method as claimed in claim 5, wherein,
The eye spacing of the periphery hole is 640mm ± 100mm, and the quantity of the periphery hole determined by the eye spacing.
7. vertical shaft deep-hole step blasting method as claimed in claim 6, wherein,
The snubber, the reliever, the diameter of the shallow eye of the periphery hole and the outer ring are 45mm ± 10mm.
8. vertical shaft deep-hole step blasting method as claimed in claim 7, wherein,
The interval time of the detonator of adjacent section is 250ms ± 20ms.
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| CN201510802242.7A CN105486181B (en) | 2015-11-19 | 2015-11-19 | Vertical shaft deep-hole step blasting method |
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| CN112595190B (en) * | 2020-12-15 | 2021-11-09 | 中国矿业大学(北京) | Vertical shaft deep hole large circulation blasting construction method |
| CN113883978B (en) * | 2021-10-19 | 2023-10-24 | 太原理工大学 | Tunnel reserved profile-protecting rock curtain water pressure energy-gathering smooth blasting method |
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| CN103758524B (en) * | 2013-12-30 | 2016-06-29 | 安徽水安建设集团股份有限公司 | A kind of segment blast driving shaft construction method |
| CN104406470B (en) * | 2014-10-20 | 2016-03-09 | 中国矿业大学(北京) | Western Cretaceous System Soft Rock Area major diameter freezing shaft deep hole Cut Blasting method |
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