CN110440649A - Hydraulic drill ring drilling large cross-section tunnel steel for shot structure and blasting method - Google Patents
Hydraulic drill ring drilling large cross-section tunnel steel for shot structure and blasting method Download PDFInfo
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- CN110440649A CN110440649A CN201910733781.8A CN201910733781A CN110440649A CN 110440649 A CN110440649 A CN 110440649A CN 201910733781 A CN201910733781 A CN 201910733781A CN 110440649 A CN110440649 A CN 110440649A
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- tunnel
- blasthole
- periphery
- area
- slotting
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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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- 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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- General Engineering & Computer Science (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a kind of hydraulic drill ring drilling large cross-section tunnel steel for shot structure and blasting methods, including being located at the slotting area of tunnel tunnel face middle and lower part and positioned at tunnel tunnel face outline excavation edge and around the periphery blasthole area in slotting area；Slotting area on slotting area middle line, is arranged at intervals with two solution blastholes using the vertical centerline of tunnel tunnel face as middle line up and down, is respectively arranged with and is vertically arranged and three mutually symmetrical with column undercut blast holes at left and right sides of slotting area middle line；Periphery blasthole area centered on slotting area to external diffusion and being circularized three floor periphery blastholes of arrangement and being formed；The multiple auxiliary blastholes for circularizing arrangement are also laid between periphery blasthole area and slotting area；The present invention by using tunnel middle and lower part region setting be greater than conventional tunnel slotting region with and biggish keyhole be open spacing, explosion is successively carried out from inside to outside, become demolition effect more preferably, while can significantly weaken generated impact endurance test shock in blasting process.
Description
[technical field]
The invention belongs to the Technology of Blasting fields more particularly to a kind of hydraulic drill ring of tunnel and underground chamber to bore
Hole large cross-section tunnel steel for shot structure and blasting method.
[background technique]
It constructs frequently with drilling and blasting method in the tunnel that China is currently built.Due to drilling and blasting method is adaptable to geological conditions,
Excavate it is at low cost, particularly suitable for the construction in solid rock tunnel, fractured rock tunnel and a large amount of short tunnels, so drilling and blasting method is
The main means of tunnel piercing at present.
However, drilling and blasting method operation be all constructed using multi-functional rock drilling rack and man-hour manually hand-held air drill, and slotting area with
The steel for shot and design in periphery blasthole area are difficult to meet the explosion demand of large cross-section tunnel blasthole, often will appear Tunnel Blasting
The out break situation of excavation, certain difficulty is caused to subsequent handling, is caused outside increased costs, also will affect construction quality and into
Degree.
[summary of the invention]
The object of the present invention is to provide a kind of hydraulic drill ring drilling large cross-section tunnel steel for shot structure and explosion sides
Method, reasonable design slotting area and periphery blasthole area and each blasthole specifically design, and occur when reducing large cross-section tunnel explosion
The probability of out break.
The large cross-section tunnel steel for shot structure the invention adopts the following technical scheme: hydraulic drill ring drills, including position
In the slotting area of tunnel tunnel face middle and lower part and positioned at tunnel tunnel face outline excavation edge and around the periphery blasthole in slotting area
Area；
Slotting area on slotting area middle line, is arranged at intervals with two using the vertical centerline of tunnel tunnel face as middle line up and down
Blasthole is solved, is respectively arranged at left and right sides of slotting area middle line and is vertically arranged and three mutually symmetrical with column undercut blast holes；
Periphery blasthole area centered on slotting area to external diffusion and being circularized three floor periphery blastholes of arrangement and being formed；
The multiple auxiliary blastholes for circularizing arrangement are also laid between periphery blasthole area and slotting area.
Further, it is mounted on beehive-shaped charge blasting cartridge in each periphery blasthole, beehive-shaped charge blasting cartridge includes tube body
And buckle closure, it moves towards longitudinally through along it on tube body and offers strip gab, buckle closure is covered on strip gab, and common with tube body
Form the cavity for loading explosive；
Towards tube body sunken inside, two sides recess is respectively formed item along tube body trend in tube wall for the left and right sides of tube body
Shape sockets for collecting energy；On same cross section, the central point of two sides sockets for collecting energy and the central point of tube body, the phase at body central point are connected
Hand over the angle formed consistent with the radian value in tunnel.
Further, it is respectively arranged with and is vertically arranged and three mutually symmetrical with column slottings at left and right sides of slotting area middle line
In blasthole:
The two column undercut blast holes the distance between nearest apart from middle line are 6m, bottom hole pitch 1m, the number of each column undercut blast hole
Amount is 8, and the angle of each undercut blast hole and tunnel tunnel face is 61 °；
Two column undercut blast holes the distance between farthest apart from middle line are 9m, bottom hole pitch 5.4m, each column undercut blast hole
Quantity is 7, and the angle of each undercut blast hole and tunnel tunnel face is 68 °；
The distance between undercut blast hole of two middle columns is 7.4m, and bottom hole pitch 3m, each column undercut blast hole is 7,
The angle of each undercut blast hole and tunnel tunnel face is 64 °.
Further, the spacing in each column undercut blast hole between two neighboring undercut blast hole is 0.7m, each slotting big gun
Hole is 4.5m relative to the vertical depth of tunnel tunnel face.
Further,
Spacing between outermost two neighboring periphery blasthole is 0.9m；
Spacing between the two neighboring periphery blasthole of middle layer is 1m；
Spacing between the two neighboring periphery blasthole of innermost layer is 1.2m；
Radial distance between outermost periphery blasthole and the periphery blasthole of middle layer is 0.5m；
Radial distance between the periphery blasthole of innermost layer and the periphery blasthole of middle layer is 0.7m.
Further, the spacing between two neighboring auxiliary blasthole is 1.4m, assists blasthole relative to tunnel tunnel face
Vertical depth is 4.5m.
Further, each periphery blasthole is 4.5m relative to the vertical depth of tunnel tunnel face.
Further, the spacing between two solution blastholes is 2.1m, and the direction of each solution blasthole is each perpendicular to tunnel face
Face and depth relative to tunnel tunnel face is 4.2m.
Another technical solution of the invention: hydraulic drill ring drilling large cross-section tunnel blasting method, based on above-mentioned
Hydraulic drill ring drilling large cross-section tunnel steel for shot structure, specifically includes the following steps:
Lay undercut blast hole, periphery blasthole, solution blasthole and auxiliary blasthole respectively on tunnel tunnel face；
Explosive and detonator thunder are packed into each undercut blast hole, solution blasthole and auxiliary blasthole according to continuous charging mode
Pipe；Beehive-shaped charge blasting cartridge is packed into the blasthole of periphery；
Successively detonate undercut blast hole, auxiliary blasthole, the periphery blasthole group of innermost layer, the periphery blasthole group of middle layer, solution big gun
Hole and outermost periphery blasthole group complete large cross-section tunnel explosion.
Further, the detonation of undercut blast hole is successively are as follows: two column undercut blast holes nearest apart from slotting area middle line, in two
Between column undercut blast hole, the two column undercut blast holes farthest apart from slotting area middle line distance.
The beneficial effects of the present invention are: the present invention is greater than drawing for conventional tunnel by using the setting in tunnel middle and lower part region
Slot region with and biggish keyhole be open spacing, formed wedge shape in a row cloth setting, successively carry out explosion from inside to outside, make quick-fried
Broken effect becomes more preferably, using the slotting angle of lesser angle, to reduce the resistance of slotting region rock, improves explosion effect
Fruit reduces explosive consumption, while can significantly weaken generated impact endurance test shock in blasting process；The present invention utilizes liquid
The advantage of drill jumbo drilling high-efficiency is pressed, tunnel blast hole utilizing factor is improved, promotes construction quality, the safety of Tunnel Blasting, is reduced
The cost of constructing tunnel achievees the purpose that highly effective and safe blast working.
[Detailed description of the invention]
Fig. 1 is large cross-section tunnel steel for shot schematic diagram in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of beehive-shaped charge blasting cartridge in the embodiment of the present invention；
Fig. 3 is the cross-sectional structure schematic diagram of beehive-shaped charge blasting cartridge in the embodiment of the present invention；
Fig. 4 is that beehive-shaped charge blasting cartridge is embedded in the schematic diagram in tunnel perimeter blasthole in the embodiment of the present invention；
Fig. 5 is the I-I schematic cross-section of Fig. 1；
Fig. 6 is that beehive-shaped charge blasting cartridge is embedded in the layout viewing in tunnel perimeter blasthole in the embodiment of the present invention.
Wherein: 1. solution blastholes；2. undercut blast hole；3. periphery blasthole；4. assisting blasthole；5. detonator；6. primacord；7. water
Bag；8. stemming；9. bottom medicine；10. tube body；11. explosive；12. buckle closure；13. strip gab；14. sockets for collecting energy.
[specific embodiment]
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
The embodiment of the invention discloses a kind of hydraulic drill ring drilling large cross-section tunnel steel for shot structures, such as Fig. 1 institute
Show, including being located at the slotting area of tunnel tunnel face middle and lower part and positioned at tunnel tunnel face outline excavation edge and around slotting area
Periphery blasthole area.
Slotting area is greater than slotting area in the prior art, the large area slotting area of 5*9m is generally set to, with tunnel face
The vertical centerline in face is middle line, on slotting area middle line, is arranged at intervals with two solution blastholes 1, slotting area middle line or so two up and down
Side, which is respectively arranged with, to be vertically arranged and three mutually symmetrical with column undercut blast holes 2.Periphery blasthole area is by outside centered on slotting area
Diffusion and three layers of periphery blasthole 3 composition for circularizing arrangement.It is also laid between periphery blasthole area and slotting area and circularizes arrangement
Multiple auxiliary blastholes 4.
By above-mentioned hydraulic drill ring drilling large cross-section tunnel steel for shot structure, to big cross section to the face arrived
Carried out it is reasonable layout and be related to, by tunnel middle and lower part region setting be greater than conventional tunnel slotting region and compared with
Opening spacing between big keyhole 2 forms fan-shaped in a row cloth setting, successively carries out explosion from inside to outside, make demolition effect
Become more preferable.
In an embodiment of the present invention, beehive-shaped charge blasting cartridge is mounted in each periphery blasthole 3.As shown in Fig. 2, poly-
Energy charge explosion pipe includes tube body 10 and buckle closure 12, moves towards longitudinally through along it on tube body 10 and offers strip gab 13, buckle closure
12 are covered on strip gab 13, and the cavity for loading explosive 11 is collectively formed with tube body 10.The left and right sides of tube body 10
Towards tube body sunken inside, two sides recess is respectively formed bar shaped sockets for collecting energy 14 along the trend of tube body 10 in tube wall；In same cross
On section, the central point of two sides sockets for collecting energy 14 and the central point of tube body 10 are connected, in the folder that 10 center of tube body is crossed to form
Angle is consistent with the radian value in tunnel, and the radian value of conventional tunnel is 172 ° or so.
Above-mentioned blasting cartridge uses PVC material.When field application, according to tunnel plan explosion drilling depth length and country rock feelings
Condition selects the explosion length of tube for being suitble to 2 loaded length of periphery blasthole, the generally deep 1/2-3/4 of tunnel perimeter blasthole 2.Such as Fig. 3
It is shown, on same cross section, the shape of sockets for collecting energy 14 are as follows: formed by the straight line that two ends are intersected, and between two straight lines
Angle is 90 °.90 ° of openings are more suitable for distance between 2 hole wall of sockets for collecting energy and periphery blasthole.10 left and right sides wall of tube body is by two V
Shape plate is connected composition, and for the opening of two V shaped slabs towards in tube body 10, the interconnecting piece of two V shaped slabs forms sockets for collecting energy 14.
About 10 tube wall of tube body is tabular, and opening 13 is located on up/down tube wall.The tube body 10 of 13 two sides of strip gab
The cross section at edge be it is ladder-like, 12 spiral-lock of buckle closure on ladder-like, with opening 13 two sides body marginal be mutually equipped with.Using straight
Buckle lid mode, it is easy to be easily operated.According to live process requirements, using direct buckle closure mode, structure is simpler, and precision is wanted
Ask low, will not deform the rough sledding of lid not up because of tubing, only need to directly be covered in buckle closure during execute-in-place
It is easy to operate in main body pipe.
The specification of blasting cartridge can choose as follows: the wide about 30.6 ± 1.0mm in its cross section, common close to Tunnel Blasting
Explosive diameter 32mm, a height of 19.2 ± 1.0mm.It is packed into special pneumatic chemical injection gun after emulsion volume both ends are broken, passes through note
Medicine rifle uniformly fills in emulsion in blasting cartridge, as bottom medicine 9.
The rear and front end portion of tube body 10 is additionally provided with the packaging part for explosive in package cavity body.As shown in figure 4, packaging part
It is located at the water bag 7 at 2 end of periphery blasthole including being set to, and is set to 2 outer end water bag 7 of periphery blasthole and stemming 8 in blasting cartridge
Interior overall length installs primacord 6, is twined securely after buckle closure 12 is covered with adhesive plaster, is added in bottom of the tube installation half explosive blend compounds band
Gu finally the spacing in blasting cartridge according to one every meter installs hard locator, blasthole 2 bottom in periphery places water bag 7 one,
The blasting cartridge for installing explosive is packed into periphery blasthole 2, water bag 7 is placed into and stemming 8 is blocked.
As shown in fig. 6, a kind of be used for 2 beehive-shaped charge explosion pipe mounting structure of tunnel perimeter blasthole, including multiple blasting cartridges,
Multiple blasting cartridges are laid along arched tunnel shape, and each blasting cartridge is vertically installed in the periphery blasthole 2 on face, same
On one cross section, the central point line of each sockets for collecting energy 14 is consistent with tunnel camber line.
In the prior art, when being constructed using usual manner, the general 40~50cm of 2 spacing of periphery blasthole, using in the present invention
Blasting cartridge, blasthole 2 spacing in periphery can increase to 90~120cm, save boring work amount 45%-66%.More general blasting cartridge
The spacing of 60~90cm saves drilling amount 13%-50%.Increase blasthole spacing, 2 hole drilling of Tunnel Blasting periphery blasthole can be reduced
Amount is highly beneficial for reducing drilling cost, has obvious effect to explosive saving is saved, and saves bursting work construction circulation
Time.
In one embodiment of the invention, somewhere high-speed rail tunnel, the long 12.162km in tunnel, for completely the first long tunnel,
Belong to I grade of high risky tunnel, in addition to inducer 1.3km is limestone formation, remaining location is argillaceous siltstoue.Barrel mainly passes through
Unconformity contacts band at 4 shear-zones and 1, and unfavorable geology mainly has: karst water, unconformity contact band, rockfall, tomography are broken
Broken band etc..
By being compared and analyzed to conventional blasting method technology with using the blasting cartridge progress explosion in the present invention, the number of acquirement
According to comparing and analyzing, cumulative blasting explosion obvious economic；The blasting cartridge used in the embodiment of the present invention is subjected to explosion
Referred to as cumulative blasting explosion.Wherein show as follows: 1. save blasted material.2. shortening the construction time improves construction efficiency；Outside 3.
It is preferable that sightseeing bursts into type, has a fling at offer advantage to later period waterproof layer.Contrast of the economic effect analysis is as shown in table 1:
The analysis of 1 contrast of the economic effect of table
In another embodiment of the invention, at another constructing tunnel, about 19 kilometers of tunnel overall length, belong to I grade of high risk
Tunnel is Asia longest, 350 kilometers of speed per hour of one-tunnel two-tracks high-speed rail tunnel, and world's construction hardly possible so far so far
One of degree maximum, the highest high-speed rail tunnel of risk.Difficult point is in the area Sui Zhi that geological conditions is special, and geological condition is extremely complicated, deposits
In karst, the big and high hydraulic pressure of reservoir, water yield is passed through, there is " geological museum " title.It is exhausted that main tunnel inlet and outlet are in steep cliff
On wall, do not have start tunneling condition, using " 3 horizontal+2 inclined shaft of hole " service tunnel start tunneling scheme.Pass through conventional blasting method skill
The data that art is obtained with the application of cumulative blasting blasting technique compare and analyze, cumulative blasting explosion obvious economic.It will make
Explosion, which is carried out, with the blasting cartridge in the embodiment of the present invention is known as cumulative blasting explosion.Every circulation directly saves money nearly 1,000 yuan, separately
It is outer that there are also the saving of the circulation time of nearly half an hour.Specific contrast of the economic effect analysis is as shown in table 2:
The analysis of 2 contrast of the economic effect of table
In the embodiment of the present invention, it is respectively arranged with and is vertically arranged and mutually symmetrical at left and right sides of slotting area middle line
In three column undercut blast holes 2.
Two column undercut blast holes 2 the distance between nearest apart from middle line are 6m, bottom hole pitch 1m, each column undercut blast hole 2
Quantity is 8, and the angle of each undercut blast hole 2 and tunnel tunnel face is 61 °.
The two column undercut blast holes 2 the distance between farthest apart from middle line are 9m, bottom hole pitch 5.4m, each column undercut blast hole 2
Quantity be 7, each undercut blast hole 2 and the angle of tunnel tunnel face are 68 °.
The distance between undercut blast hole 2 of two middle columns is 7.4m, and bottom hole pitch 3m, each column undercut blast hole 2 is 7
A, the angle of each undercut blast hole 2 and tunnel tunnel face is 64 °.In this embodiment, by using the slotting of lesser angle
Angle reduces the resistance of slotting region rock, improves demolition effect, reduces explosive consumption, while can be significantly
Weaken generated impact endurance test shock in blasting process.
In the embodiment of the present invention, the spacing in each column undercut blast hole 2 between two neighboring undercut blast hole 2 is 0.7m, often
A undercut blast hole 2 is 4.5m relative to the vertical depth of tunnel tunnel face.The arrangement form of this undercut blast hole can be effective
Slotting effect is improved, Tunnel Blasting drilling depth is improved.
In the embodiment of the present invention, the spacing between outermost two neighboring periphery blasthole 3 is 0.9m；Middle layer it is adjacent
Spacing between two periphery blastholes 3 is 1m；Spacing between the two neighboring periphery blasthole 3 of innermost layer is 1.2m；Outermost layer
Periphery blasthole 3 and middle layer periphery blasthole 3 between radial distance be 0.5m；The periphery blasthole 3 and middle layer of innermost layer
Periphery blasthole 3 between radial distance be 0.7m.Each periphery blasthole 3 is relative to the vertical depth of tunnel tunnel face
4.5m.It is this to be different from conventional blasting method, the boring work in tunnel can be effectively reduced while weakening demolition effect
Amount
In the embodiment of the present invention, the spacing between two neighboring auxiliary blasthole 4 is 1.4m, assists blasthole 4 relative to tunnel
The vertical depth of road face is 4.5m.Auxiliary blasthole 4 can effectively be controlled the bulk of Tunnel Blasting by this spacing arrangement
The generation of rate.
In the embodiment of the present invention, the spacing between two solution blastholes 1 is 2.1m, and the direction of each solution blasthole 1 is each perpendicular to
Tunnel tunnel face and depth relative to tunnel tunnel face is 4.2m.Increase solution blasthole 1 in slotting region, it is possible to reduce
The generation of bulk after the explosion of slotting area.
Steel for shot structure in tunnel provided by the invention and blasting method can also effectively save construction cost, Neng Gouyou
The raising construction speed of effect guarantees that integrated construction benefit reaches more excellent state.Therefore by two neighboring periphery blasthole
3 spacing is configured, and be configured by the spacing to two neighboring tunnel bottom perimeter blasthole (tunnel bottom perimeter blasthole near
Spacing between the two neighboring periphery blasthole of one floor in nearly slotting area is 1.2m, between the two neighboring periphery blasthole of middle layer between
Away from for 1.2m, the spacing between the two neighboring periphery blasthole of outermost layer is 1.1m), cooperate mutual cumulative between blasthole and blasthole
Effect, so that line generates stress concentration between blasthole, the initial crack on the hole wall line of blasthole further develops, and lag
High pressure gas effect, make the scar smooth along tunnel excavation contour line explosion.
The present invention utilizes the drilling advantage of hydraulic drill ring, and the slotting for being greater than conventional blasting method is formed in face middle and lower part
Region, big slotting region are that the via hole explosion of tunnel face Middle face or more preferably creates the new scope of freedom, are improved
Demolition effect, reduces explosive specific charge, ensure that tunnel Cut Blasting excavation effect.In order to control big slotting region explosion
Bulk is led to the problem of afterwards, is newly increased solution blasthole and is solved the problems, such as bulk.Cumulative structure is used in tunnel perimeter hole simultaneously to fill
The quantity of the periphery hole of conventional blast can be reduced about half, the drilling hole amount of Tunnel Blasting is greatly decreased, improves explosion by medicine
Efficiency.
Another embodiment of the present invention discloses a kind of drilling large cross-section tunnel blasting methods of hydraulic drill ring, based on upper
The hydraulic drill ring drilling large cross-section tunnel steel for shot structure stated, specifically includes the following steps:
Lay undercut blast hole 2, periphery blasthole 3, solution blasthole 1 and auxiliary blasthole 4 respectively on tunnel tunnel face.Described 22
Explosive and Nonel detonator are respectively charged into according to continuous charging mode in wedge cutter.First row is (i.e. in face
Two nearest column undercut blast holes 2 of line) undercut blast hole 2 fill MS1 section detonators detonate at first, second row keyhole MS3 sections of detonators of dress with
Detonation, third row's keyhole fill MS5 sections of detonators and finally detonate afterwards.
It is different from conventional blasting method periphery blasthole 3 and is packed into explosive cartridge according to airspace mode, used in the present embodiment poly-
Energy structure powder charge, specifically as shown in figure 4, being respectively charged into MS9, MS11, MS15 sections of Nonel detonator according to sequence from the inside to the outside
Explosive cartridge and MS13 sections of Nonel detonators are continuously packed into solution blasthole 1, are detonated in periphery blasthole
Preceding detonation.It is continuously packed into explosive cartridge in auxiliary blasthole 4, and is packed into MS7 sections and leads quick-fried detonator.
Explosive and detonator are packed into each undercut blast hole 2, solution blasthole 1 and auxiliary blasthole 4 according to continuous charging mode
Detonator；Beehive-shaped charge blasting cartridge is packed into periphery blasthole 3.
Successively detonation undercut blast hole 2, auxiliary blasthole 4, the periphery blasthole group of innermost layer, the periphery blasthole group of middle layer, solution
Blasthole 1 and outermost periphery blasthole group complete large cross-section tunnel explosion.
Wherein, the detonation of undercut blast hole 2 is successively are as follows: two column undercut blast hole 2, two centres nearest apart from slotting area middle line
Column undercut blast hole 2, the two column undercut blast holes 2 farthest apart from slotting area middle line distance.
Application Example:
Cutting method of the invention and its blasting method are subjected to tunnel piercing using tunnel IV grades of country rock section of Mr. Yu's high-speed rail
Demolition effect is obvious, and driving single cycle drilling depth has been increased to 4.0m or so by 3.6m, blast hole utilizing factor by 75% before~
85% mentions and has reached 90%~97%, effectively reduces excavation cost, improves construction efficiency.
Claims (10)
- The large cross-section tunnel steel for shot structure 1. hydraulic drill ring drills, which is characterized in that including being located in tunnel tunnel face The slotting area of lower part and positioned at tunnel tunnel face outline excavation edge and around the slotting area periphery blasthole area；The slotting area on slotting area middle line, is arranged at intervals with up and down using the vertical centerline of tunnel tunnel face as middle line Two solution blastholes (1) are respectively arranged at left and right sides of slotting area middle line and are vertically arranged and three mutually symmetrical with column slotting big guns Hole (2)；Periphery blasthole area is to external diffusion and circularizing three floor periphery blastholes (3) of arrangement centered on the slotting area Composition；The multiple auxiliary blastholes (4) for circularizing arrangement are also laid between periphery blasthole area and the slotting area.
- The large cross-section tunnel steel for shot structure 2. hydraulic drill ring as described in claim 1 drills, which is characterized in that each It is mounted on beehive-shaped charge blasting cartridge in the periphery blasthole (3), the beehive-shaped charge blasting cartridge includes tube body (10) and buckle closure (12), it moves towards longitudinally through along it on the tube body (10) to offer strip gab (13), the buckle closure (12) is covered on described On strip gab (13), and the cavity for loading explosive (11) is collectively formed with the tube body (10)；The left and right sides of the tube body (10) is towards tube body sunken inside, and two sides recess is in tube wall along the tube body (10) Trend is respectively formed bar shaped sockets for collecting energy (14)；On same cross section, central point and tube body (10) of two sides sockets for collecting energy (14) are connected Central point, it is consistent with the radian value in tunnel in the angle that the tube body (10) center is crossed to form.
- The large cross-section tunnel steel for shot structure 3. hydraulic drill ring as claimed in claim 2 drills, which is characterized in that described It is respectively arranged with and is vertically arranged and in three mutually symmetrical with column undercut blast holes (2) at left and right sides of slotting area middle line:Two column undercut blast holes (2) the distance between nearest apart from middle line are 6m, bottom hole pitch 1m, undercut blast hole described in each column (2) quantity is 8, and the angle of each undercut blast hole (2) and tunnel tunnel face is 61 °；Two column undercut blast holes (2) the distance between farthest apart from middle line are 9m, bottom hole pitch 5.4m, undercut blast hole described in each column (2) quantity is 7, and the angle of each undercut blast hole (2) and tunnel tunnel face is 68 °；The distance between undercut blast hole (2) of two middle columns is 7.4m, bottom hole pitch 3m, and undercut blast hole (2) described in each column is equal It is 7, the angle of each undercut blast hole (2) and tunnel tunnel face is 64 °.
- The large cross-section tunnel steel for shot structure 4. hydraulic drill ring as claimed in claim 3 drills, which is characterized in that each Arranging the spacing in the undercut blast hole (2) between two neighboring undercut blast hole (2) is 0.7m, each undercut blast hole (2) phase Vertical depth for tunnel tunnel face is 4.5m.
- The large cross-section tunnel steel for shot structure 5. hydraulic drill ring as described in claim 3 or 4 drills, which is characterized in thatSpacing between outermost two neighboring periphery blasthole (3) is 0.9m；Spacing between the two neighboring periphery blasthole (3) of middle layer is 1m；Spacing between the two neighboring periphery blasthole (3) of innermost layer is 1.2m；Radial distance between the outermost periphery blasthole (3) and the periphery blasthole (3) of middle layer is 0.5m；Radial distance between the periphery blasthole (3) of innermost layer and the periphery blasthole (3) of middle layer is 0.7m.
- The large cross-section tunnel steel for shot structure 6. hydraulic drill ring as claimed in claim 5 drills, which is characterized in that adjacent Spacing between two auxiliary blasthole (4) is 1.4m, and the auxiliary blasthole (4) is relative to the vertical depth of tunnel tunnel face 4.5m。
- The large cross-section tunnel steel for shot structure 7. the hydraulic drill ring as described in claim 3 or 4 or 6 drills, feature exist In each periphery blasthole (3) is 4.5m relative to the vertical depth of tunnel tunnel face.
- The large cross-section tunnel steel for shot structure 8. hydraulic drill ring as claimed in claim 7 drills, which is characterized in that two Spacing between solution blasthole (1) is 2.1m, and the direction of each solution blasthole (1) is each perpendicular to tunnel tunnel face and phase Depth for tunnel tunnel face is 4.2m.
- The large cross-section tunnel blasting method 9. hydraulic drill ring drills, which is characterized in that any described based on claim 1-8 Hydraulic drill ring drilling large cross-section tunnel steel for shot structure, specifically includes the following steps:Lay undercut blast hole (2), periphery blasthole (3), solution blasthole (1) and auxiliary blasthole (4) respectively on tunnel tunnel face；According to continuous charging mode each undercut blast hole (2), solution blasthole (1) and auxiliary blasthole (4) in loading explosive and Nonel detonator；Beehive-shaped charge blasting cartridge is packed into the periphery blasthole (3)；It successively detonates undercut blast hole (2), auxiliary blasthole (4), the periphery blasthole group of innermost layer, the periphery blasthole group of middle layer, solution Blasthole (1) and outermost periphery blasthole group complete large cross-section tunnel explosion.
- The large cross-section tunnel blasting method 10. hydraulic drill ring as claimed in claim 9 drills, which is characterized in that described to draw The detonation of slot blasthole (2) is successively are as follows: apart from two column undercut blast holes (2), the two middle column undercut blast holes of slotting area middle line recently (2), the two column undercut blast holes (2) farthest apart from slotting area middle line distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910733781.8A CN110440649A (en) | 2019-08-09 | 2019-08-09 | Hydraulic drill ring drilling large cross-section tunnel steel for shot structure and blasting method |
Applications Claiming Priority (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112880500A (en) * | 2021-01-29 | 2021-06-01 | 中交路桥北方工程有限公司 | Wall protection smooth blasting method for tunnel weak surrounding rock based on double-layer peripheral hole arrangement |
| CN113465461A (en) * | 2021-08-02 | 2021-10-01 | 贵州华昱乾城科技服务有限公司 | Large-section tunnel blasting hole-reducing layout method |
| CN113959283A (en) * | 2021-08-02 | 2022-01-21 | 贵州华昱乾城科技服务有限公司 | Blasting construction method for large-section tunnel |
| CN114963904A (en) * | 2022-06-13 | 2022-08-30 | 中交第二公路工程局有限公司 | Tunnel blast hole structure based on directional energy-gathering slotted hole and blasting method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100294819B1 (en) * | 1999-02-24 | 2002-01-19 | 정희용 | Blast method vibration control of multistage for blast perpendicular hole and tunnel |
| CN106091848A (en) * | 2016-06-22 | 2016-11-09 | 四川路桥华东建设有限责任公司 | A kind of realize overlength, high inclination-angle tunnel anchorage tops bar the method for explosion |
| CN108225137A (en) * | 2018-01-30 | 2018-06-29 | 河南神火煤电股份有限公司 | Rock roadway in coal mine tunnels cumulative smooth Hydraulic Blasting structure and method |
| CN109855500A (en) * | 2019-03-29 | 2019-06-07 | 中铁隧道局集团有限公司 | One kind being used for tunnel perimeter eye beehive-shaped charge blasting cartridge |
-
2019
- 2019-08-09 CN CN201910733781.8A patent/CN110440649A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100294819B1 (en) * | 1999-02-24 | 2002-01-19 | 정희용 | Blast method vibration control of multistage for blast perpendicular hole and tunnel |
| CN106091848A (en) * | 2016-06-22 | 2016-11-09 | 四川路桥华东建设有限责任公司 | A kind of realize overlength, high inclination-angle tunnel anchorage tops bar the method for explosion |
| CN108225137A (en) * | 2018-01-30 | 2018-06-29 | 河南神火煤电股份有限公司 | Rock roadway in coal mine tunnels cumulative smooth Hydraulic Blasting structure and method |
| CN109855500A (en) * | 2019-03-29 | 2019-06-07 | 中铁隧道局集团有限公司 | One kind being used for tunnel perimeter eye beehive-shaped charge blasting cartridge |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112880500A (en) * | 2021-01-29 | 2021-06-01 | 中交路桥北方工程有限公司 | Wall protection smooth blasting method for tunnel weak surrounding rock based on double-layer peripheral hole arrangement |
| CN112880500B (en) * | 2021-01-29 | 2022-03-11 | 中交路桥北方工程有限公司 | Wall protection smooth blasting method for tunnel weak surrounding rock based on double-layer peripheral hole arrangement |
| CN113465461A (en) * | 2021-08-02 | 2021-10-01 | 贵州华昱乾城科技服务有限公司 | Large-section tunnel blasting hole-reducing layout method |
| CN113959283A (en) * | 2021-08-02 | 2022-01-21 | 贵州华昱乾城科技服务有限公司 | Blasting construction method for large-section tunnel |
| CN114963904A (en) * | 2022-06-13 | 2022-08-30 | 中交第二公路工程局有限公司 | Tunnel blast hole structure based on directional energy-gathering slotted hole and blasting method |
| CN114963904B (en) * | 2022-06-13 | 2023-12-15 | 中交第二公路工程局有限公司 | Tunnel blasting hole structure based on directional energy-gathering slotted holes and blasting method |
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Application publication date: 20191112 |