CN110006300A - A kind of method of soft rock, high inclination-angle tunnel anchorage digital primer Blasting Excavation - Google Patents
A kind of method of soft rock, high inclination-angle tunnel anchorage digital primer Blasting Excavation Download PDFInfo
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- CN110006300A CN110006300A CN201910341852.XA CN201910341852A CN110006300A CN 110006300 A CN110006300 A CN 110006300A CN 201910341852 A CN201910341852 A CN 201910341852A CN 110006300 A CN110006300 A CN 110006300A
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- hole
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- explosion
- via hole
- tunnel anchorage
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
Abstract
The present invention is suitable for tunnel anchorage excavation construction field, a kind of method of soft rock, high inclination-angle tunnel anchorage digital primer Blasting Excavation is provided, after carrying out tunnel anchorage Blasting Excavation by the method for the invention, so that excavation boundary is formed smooth, smooth interface, reduce blasting vibration, reduces the influence to periphery construction of structures, realize soft rock, the construction of high inclination-angle tunnel anchorage micro-disturbance, the integrality of country rock is improved, is reduced to environmental disruption, to enhance the overall stability and durability of tunnel anchorage.Therefore the significant advantage of the present invention is that vibration rate is small, reduces to country rock disturbance, can effectively improve demolition effect, it is ensured that the safety of tunnel anchorage construction and later period operation, and the influence to periphery construction of structures can be reduced.
Description
Technical field
The invention belongs to tunnel anchorage excavation construction field more particularly to a kind of soft rock, high inclination-angle tunnel anchorage digital primer are quick-fried
The method for breaking digging.
Background technique
As traffic base construction is put into operation in succession, suspension bridge can utilize the performance of material and the height of stiff girder very well
Across being compared to use, at the same possess materials save, from heavy and light, reply landform and complex geologic conditions ability is strong the features such as, in various systems
Advantage gradually highlights in bridge, is favored by more and more builders.Analysis of Suspension Bridges ' Anchorage form common at present is broadly divided into weight
Power anchor and tunnel anchorage, and tunnel anchorage has many advantages, such as low cost, environmentally friendly obtains everybody approval.Domestic tunnel anchorage is most
It is excavated using drilling and blasting method, drill bursting construction is applicable, and geological conditions is wide, equipment is simple, at low cost, but for soft rock, high inclination-angle, neighbour
Tunnel anchorage of nearly construction of structures etc. easily causes excavation face to be formed because blasting method control is improper, and of poor quality, country rock disturbance is big, right
Surrounding enviroment influence the adverse consequences such as big.
Summary of the invention
In view of the above problems, the purpose of the present invention is to provide a kind of soft rock, high inclination-angle tunnel anchorage digital primer explosions to open
The method of digging, it is intended to solve the technical problem that existing drilling and blasting method is of poor quality, disturbance is big, effect on environment is big.
The present invention adopts the following technical scheme:
The method of the soft rock, high inclination-angle tunnel anchorage digital primer Blasting Excavation, comprising:
Step S1, it according to tunnel anchorage middle line, excavation contour line setting-out, determines and excavates region and excavate boundary, tunnel anchorage is dug
It is carried out by the way of recycling explosion；
Step S2, the excavation region is divided by the stepped area of upper, middle and lower three according to tunnel anchorage cross dimensions；
Step S3, blast hole being arranged in top bar region and carrying out explosion, arch shape steel bracket is installed in time after scarfing cinder, is beaten
If lock foot anchoring stock and system anchor bolt, last m esh-hanging sprayed concrete then proceedes to arrangement blast hole and carries out explosion until appearing on the stage
Rank region drilling depth reaches setting value；
Step S4, arranged on the sky scope of freedom in facing of exposing of middle stepped area and blast hole and carry out explosion, after scarfing cinder and
When abutment wall shape steel bracket is installed, set lock foot anchoring stock and system anchor bolt, last m esh-hanging sprayed concrete then proceedes to arrangement explosion
Hole simultaneously carries out explosion until middle stepped area drilling depth reaches setting value；
Step S5, arranged on the sky scope of freedom facing of exposing in region of getting out of a predicament or an embarrassing situation and blast hole and carry out explosion, after scarfing cinder and
When mounting base shape steel bracket, set lock foot anchoring stock and system anchor bolt, last linked network bottom ejector plate concrete forms closing knot
Structure then proceedes to arrangement blast hole and carries out explosion until region drilling depth of getting out of a predicament or an embarrassing situation reaches setting value；
Step S6, it is repeated in the step S3-S5, until three stepped areas reach design mileage, explosion is completed and opens
It digs.
Further, arrangement blast hole is drilled using pusher leg drill.
Further, in step S3-S5, conduit advance support is done before tunnel anchorage arrangement blast hole explosion, between arch is circumferential
Away from 0.8m, abutment wall circumferential direction spacing 1.0m, aperture is Φ 42mm.
Further, in step S3-S5, each development blasting drilling depth control of the stepped area of upper, middle and lower three exists
1.2m, the setting value are 6.0m.
Further, top bar region arrangement blast hole type have keyhole, via hole, periphery hole, bottom plate hole with
And emptying aperture, the via hole is divided into outer via hole, via hole in via hole and second in first；
Wherein the periphery hole is arranged along excavation boundary in semicircular arc, hole depth 1.8m, pitch of holes 0.5m；
The outer via hole is located on the inside of periphery hole, totally three layers and arranges in semicircular arc, hole depth 0.85m, outside adjacent layer
The interlamellar spacing of via hole is 0.75m；Wherein the interlamellar spacing of the outer via hole of outermost layer and periphery hole is 0.6m；
The emptying aperture is located on the inside of the outer via hole of innermost layer and arranges along vertical cental axial position, the keyhole, the
Via hole is respectively positioned on the inside of the outer via hole of innermost layer in via hole and second in one, and is sequentially located at the emptying aperture two sides from centre
It being arranged symmetrically to two sides, the keyhole, via hole is vertically arranged in first, and via hole is arranged in splayed in described second,
The bottom plate hole is located at bottommost and horizontally disposed two rows, the keyhole hole depth 1.5-2.0m, upper and lower array pitch 0.6m, the bottom
Plate hole hole depth 1.6-1.8m, the emptying aperture totally 2, hole depth 1.6m.
Further, the explosion in step S3-S5 is controlled using detonating control system, and blast hole explosive uses
Emulsion, emptying aperture not powder charge, periphery hole use underground borehole blasting, other holes use closely knit charge constitution, detonator use
High-precision digital detonator, specific Blasting Control process are as follows:
Barcode scanning acquisition is carried out using identity information of the initiator to detonator, and records corresponding detonator numbering；
Check the explosive payload of all kinds of blast holes, when powder charge is grouped blast hole according to explosion design drawing, and by carrying out
Detonator wire number makes blast hole plug-hole mud item using stemming；
Detonator is connected on quick-fried area's main line using parallel way, the detonation of setting each group blast hole is delayed the time, is made every
Hole-by-hole initiation is realized when group blast hole explosion；
It detects whether all detonators are all connected on quick-fried area's main line, checks the short circuit being likely to occur, breaking problem in time；
Laser scanning and ranging imager is arranged in safe distance position immediately ahead of top bar region；
Quick-fried area's main line is connected to explosion bus, connects explosion bus and initiator；
The input detonation dynamic password on initiator, by grouping detonation, after the completion of every group of detonation, laser scanning and ranging imaging
Instrument carries out image scanning to top bar region and obtains explosion image, calculates the center of gravity of the sunk area in explosion image, selection with
A nearest blast hole of the center of gravity is grouped into next grouping.
Further, for each grouping, if the quantity in current group borehole blasting hole is odd number, the explosion of middle
Hole is current group at a distance from sunk area center of gravity at a distance from sunk area center of gravity, if the number in current group borehole blasting hole
Amount is even number, then the central point of two blast holes in middle is current group and sunk area weight at a distance from sunk area center of gravity
The distance of the heart.
Further, arrangement blast hole in top bar region is grouped as follows:
Keyhole on the left of emptying aperture is first group；
Keyhole on the right side of emptying aperture is second group；
On the left of emptying aperture first in via hole be third group；
On the right side of emptying aperture first in via hole be the 4th group；
On the left of emptying aperture second in via hole be the 5th group；
On the right side of emptying aperture second in via hole be the 6th group；
Bottom plate hole positioned at upper row's left-half is the 7th group；
Bottom plate hole positioned at upper row's right half part is the 8th group；
Bottom plate hole positioned at lower row's left-half is the 9th group；
Bottom plate hole positioned at lower row's left-half is the tenth group；
Outer via hole positioned at innermost layer left-half is the 11st group；
Outer via hole positioned at innermost layer right half part is the 12nd group；
Outer via hole positioned at middle layer left-half is the 13rd group；
Outer via hole positioned at middle layer right half part is the 14th group；
Uniformly it is divided into four groups positioned at outermost outer via hole, is from left to right followed successively by the 16th group, the 15th group, the tenth
Seven groups, the 18th group；
Periphery hole is equally uniformly divided into four groups, is from left to right followed successively by the 20th group, the 19th group, the 21st group,
22 groups.
The beneficial effects of the present invention are: forming excavation boundary after carrying out tunnel anchorage Blasting Excavation by the method for the invention
Smooth, smooth interface reduces blasting vibration, reduces the influence to periphery construction of structures, it is micro- to realize soft rock, high inclination-angle tunnel anchorage
Disturbance construction, improves the integrality of country rock, reduces to environmental disruption, to enhance the overall stability of tunnel anchorage and durable
Property.
Detailed description of the invention
Fig. 1 be soft rock provided in an embodiment of the present invention, high inclination-angle tunnel anchorage digital primer Blasting Excavation method process
Figure；
Fig. 2 is a point bench excavation step sequence schematic diagram；
Fig. 3 is top bar region blasting hole layout drawing；
Fig. 4 is initiation net schematic diagram；
Fig. 5 is blast hole grouping schematic diagram.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In order to illustrate technical solutions according to the invention, the following is a description of specific embodiments.
As shown in Figure 1, the method for soft rock provided by the embodiment, high inclination-angle tunnel anchorage digital primer Blasting Excavation includes following
Step:
Step S1, it according to tunnel anchorage middle line, excavation contour line setting-out, determines and excavates region and excavate boundary, tunnel anchorage is dug
It is carried out by the way of recycling explosion.The present embodiment tunnel anchorage sinking and blasting cyclic advance is controlled in 1.2m, i.e., every separate explosion
1.2 meters of driving.
Step S2, the excavation region is divided by the stepped area of upper, middle and lower three according to tunnel anchorage cross dimensions.Such as
It shown in Fig. 2, excavates region and is divided into the stepped area of upper, middle and lower three, respectively correspond diagram tri- stepped areas of A, B, C.
Step S3, blast hole being arranged in top bar region and carrying out explosion, arch shape steel bracket is installed in time after scarfing cinder, is beaten
If lock foot anchoring stock and system anchor bolt, last m esh-hanging sprayed concrete then proceedes to arrangement blast hole and carries out explosion until appearing on the stage
Rank region drilling depth reaches setting value.
Step S4, arranged on the sky scope of freedom in facing of exposing of middle stepped area and blast hole and carry out explosion, after scarfing cinder and
When abutment wall shape steel bracket is installed, set lock foot anchoring stock and system anchor bolt, last m esh-hanging sprayed concrete then proceedes to arrangement explosion
Hole simultaneously carries out explosion until middle stepped area drilling depth reaches setting value.
Step S5, arranged on the sky scope of freedom facing of exposing in region of getting out of a predicament or an embarrassing situation and blast hole and carry out explosion, after scarfing cinder and
When mounting base shape steel bracket, set lock foot anchoring stock and system anchor bolt, last linked network bottom ejector plate concrete forms closing knot
Structure then proceedes to arrangement blast hole and carries out explosion until region drilling depth of getting out of a predicament or an embarrassing situation reaches setting value.
It arranges that blast hole is drilled using pusher leg drill, does conduit advance support before tunnel anchorage arrangement blast hole explosion,
Arch circumferential direction spacing 0.8m, abutment wall circumferential direction spacing 1.0m, aperture are Φ 42mm.Step S3-S5 is respectively the tool in the region A, B, C
Body Blasting Control process, due to 1.2 meters of each development blasting, the present embodiment is after each region explosion carries out onepull, also
Continue next separate explosion, until reaching design value requirement, setting value is 6.0 meters in the present embodiment, i.e. a region need into
5 separate explosion of row.In above-mentioned steps, the sky scope of freedom of facing is the level table that is formed after upper difference explosion, i.e. diagram AB it
Between face and diagram BC between face.
Step S6, it is repeated in the step S3-S5, until three stepped areas reach design mileage, explosion is completed and opens
It digs.
The explosion of top bar region is the most crucial part of tunnel anchorage, and it is simpler to face the arrangement blast hole explosion of the sky scope of freedom
It is single, only blast hole need to be evenly arranged on facing the sky scope of freedom.Therefore the present embodiment emphasis describes the explosion in top bar region
Process.
When explosion top bar, as shown in figure 3, the blast hole type of arrangement has keyhole, via hole, periphery hole, bottom plate hole
And emptying aperture, the via hole is divided into outer via hole, via hole in via hole and second in first.Before drilling, set according to explosion
Parameter red paint is counted to be identified according to the blasthole spacing of periphery hole, via hole, keyhole, bottom plate hole etc. in face to be blasted
On, convenient for applying the control that brill personnel carry out blasthole spacing.Wherein the periphery hole is arranged along excavation boundary in semicircular arc, hole depth
1.8m, pitch of holes 0.5m；The outer via hole is located on the inside of periphery hole, totally three layers and arranges in semicircular arc, hole depth 0.85m,
The interlamellar spacing of the outer via hole of adjacent layer is 0.75m；Wherein the interlamellar spacing of the outer via hole of outermost layer and periphery hole is 0.6m；The sky
Hole is located on the inside of the outer via hole of innermost layer and arranges along vertical cental axial position, the keyhole, via hole and the in first
Via hole is respectively positioned on the inside of the outer via hole of innermost layer in two, and be sequentially located at the emptying aperture two sides from centre to two sides symmetrical cloth
It sets, the keyhole, via hole is vertically arranged in first, and via hole is arranged in splayed in described second, the bottom plate hole location
In bottommost and horizontally disposed two rows, the keyhole hole depth 1.5-2.0m, upper and lower array pitch 0.6m, the bottom plate hole hole depth 1.6-
1.8m, the emptying aperture totally 2, hole depth 1.6m.
Explosion in above-mentioned steps S3-S5 is controlled using detonating control system, and blast hole explosive usesEmulsification
Explosive, emptying aperture not powder charge, periphery hole use underground borehole blasting, and other holes use closely knit charge constitution, and detonator is using high-precision
Digital primer, blasting network figure is as shown in figure 4, specific Blasting Control process is as follows:
(1) barcode scanning acquisition is carried out using identity information of the initiator to detonator, and records corresponding detonator numbering.
(2) explosive payload of all kinds of blast holes is checked, when powder charge is grouped blast hole according to explosion design drawing, and presses in
Row detonator wire number makes blast hole plug-hole mud item using stemming.Fig. 5 shows a kind of specific packet mode, and grouping is compiled
Number as shown, in diagram top bar region arrangement blast hole be grouped as follows:
Keyhole on the left of emptying aperture is first group；
Keyhole on the right side of emptying aperture is second group；
On the left of emptying aperture first in via hole be third group；
On the right side of emptying aperture first in via hole be the 4th group；
On the left of emptying aperture second in via hole be the 5th group；
On the right side of emptying aperture second in via hole be the 6th group；
Bottom plate hole positioned at upper row's left-half is the 7th group；
Bottom plate hole positioned at upper row's right half part is the 8th group；
Bottom plate hole positioned at lower row's left-half is the 9th group；
Bottom plate hole positioned at lower row's left-half is the tenth group；
Outer via hole positioned at innermost layer left-half is the 11st group；
Outer via hole positioned at innermost layer right half part is the 12nd group；
Outer via hole positioned at middle layer left-half is the 13rd group；
Outer via hole positioned at middle layer right half part is the 14th group；
Uniformly it is divided into four groups positioned at outermost outer via hole, is from left to right followed successively by the 16th group, the 15th group, the tenth
Seven groups, the 18th group；
Periphery hole is equally uniformly divided into four groups, is from left to right followed successively by the 20th group, the 19th group, the 21st group,
22 groups.
(3) detonator is connected on quick-fried area's main line using parallel way, the detonation of setting each group blast hole is delayed the time, is made
Hole-by-hole initiation is realized when every group of blast hole explosion.Here when a grouping detonation, successively detonation in order, an explosion of detonating every time
Hole, the adjacent explosion time difference are that the detonation of setting is delayed the time.
(4) it detects whether all detonators are all connected on quick-fried area's main line, checks short circuit, the open circuit being likely to occur in time and ask
Topic.
(5) laser scanning and ranging imager is arranged in safe distance position immediately ahead of top bar region.
(6) quick-fried area's main line is connected to explosion bus, connects explosion bus and initiator.
(7) the input detonation dynamic password on initiator, by grouping detonation, after the completion of every group of detonation, laser scanning and ranging
Imager carries out image scanning to top bar region and obtains explosion image, calculates the center of gravity of the sunk area in explosion image, choosing
It selects a blast hole nearest with the center of gravity and is grouped into next grouping.
The laser scanning and ranging imager is array laser scanner, primary available multiple range data, one group
After the completion of explosion, laser scanning and ranging imager is scanned top bar region, after one group of explosion, will form one it is recessed
Region is fallen into, the driving size of the present embodiment setting is 1.2 meters, therefore this sunk area depth is compared substantially at 1.2 meters or so
In the area planar of other non-explosions or obvious, therefore depressed area may recognize that by simple distance detection
Domain.In addition certain horizontal angle and pitch angle are had when left and right pitching scans in view of laser scanning and ranging imager, according to
The sunk area depth distribution data that measured data obtains have certain error, it is contemplated that laser scanning and ranging imager away from
From farther out, therefore horizontal angle and pitch angle are all smaller, less than 5 degree, therefore will not influence sunk area identification.And according to recess
Position of centre of gravity is sought in region, this algorithm is the prior art, is not repeated here.Complete one group include after, selection with sunk area center of gravity
A nearest blast hole is grouped into next grouping and then proceedes to explosion.Here, for each grouping, if quick-fried in current group
The quantity of holes is odd number, then the blast hole of middle is current group and sunk area center of gravity at a distance from sunk area center of gravity
Distance, if the quantity in current group borehole blasting hole be even number, the central point and sunk area of the blast hole of middle two
The distance of center of gravity is current group at a distance from sunk area center of gravity.After every group of explosion, it is contemplated that rock quality, crackle etc.
Various influences, the sunk area range formed after explosion is also not fixed, if starting next explosion in a fixed order
Grouping, this mode adaptability is poor, is easy to appear the incomplete problem of explosion, if there is this situation, can only continue to arrange
Blast hole wastes time very much.
To sum up, during blast working of the present invention, each wide open digging vibration of region anchor will not be caused leading anchor hole country rock
Security implication can cope under weak surrounding rock geological conditions, greatly reduce the security risks such as landslide；Digital electric is used when explosion
Detonator state can on-line checking, reduce construction safety risk.The method of the present invention is suitable for multiple close to major urban arterial highway, residential block etc.
Heterocycle border, the influence very little to periphery construction of structures.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (8)
1. a kind of method of soft rock, high inclination-angle tunnel anchorage digital primer Blasting Excavation, which is characterized in that the described method includes:
Step S1, it according to tunnel anchorage middle line, excavation contour line setting-out, determines and excavates region and excavate boundary, tunnel anchorage driving is adopted
It is carried out with the mode of circulation explosion；
Step S2, the excavation region is divided by the stepped area of upper, middle and lower three according to tunnel anchorage cross dimensions；
Step S3, blast hole being arranged in top bar region and carrying out explosion, arch shape steel bracket is installed in time after scarfing cinder, sets lock
Foot anchor pole and system anchor bolt, last m esh-hanging sprayed concrete then proceed to arrangement blast hole and carry out explosion until top bar area
Domain drilling depth reaches setting value；
Step S4, it is arranged on the sky scope of freedom in facing of exposing of middle stepped area and blast hole and carries out explosion, pacified in time after scarfing cinder
Rim wall shape steel bracket, sets lock foot anchoring stock and system anchor bolt, and last m esh-hanging sprayed concrete then proceedes to arrangement blast hole simultaneously
Explosion is carried out until middle stepped area drilling depth reaches setting value；
Step S5, it is arranged on the sky scope of freedom facing of exposing in region of getting out of a predicament or an embarrassing situation and blast hole and carries out explosion, pacified in time after scarfing cinder
Bottom plate shape steel bracket is filled, lock foot anchoring stock and system anchor bolt are set, last linked network bottom ejector plate concrete forms enclosed construction, so
After continue to arrange blast hole and carry out explosion until region drilling depth of getting out of a predicament or an embarrassing situation reaches setting value；
Step S6, it is repeated in the step S3-S5, until three stepped areas reach design mileage, completes Blasting Excavation.
2. the method for soft rock as described in claim 1, high inclination-angle tunnel anchorage digital primer Blasting Excavation, which is characterized in that arrangement
Blast hole is drilled using pusher leg drill.
3. the method for soft rock as described in claim 1, high inclination-angle tunnel anchorage digital primer Blasting Excavation, which is characterized in that step
In S3-S5, conduit advance support, arch circumferential direction spacing 0.8m, abutment wall circumferential direction spacing are done before tunnel anchorage arrangement blast hole explosion
1.0m, aperture are Φ 42mm.
4. the method for soft rock as described in claim 1, high inclination-angle tunnel anchorage digital primer Blasting Excavation, which is characterized in that step
In S3-S5, in 1.2m, the setting value is 6.0m for each development blasting drilling depth control of the stepped area of upper, middle and lower three.
5. the method for soft rock as described in claim 1, high inclination-angle tunnel anchorage digital primer Blasting Excavation, which is characterized in that upper
The blast hole type of stepped area arrangement has keyhole, via hole, periphery hole, bottom plate hole and emptying aperture, and the via hole is divided into
Outer via hole, via hole in via hole and second in first；
Wherein the periphery hole is arranged along excavation boundary in semicircular arc, hole depth 1.8m, pitch of holes 0.5m；
The outer via hole is located on the inside of periphery hole, totally three layers and arranges in semicircular arc, hole depth 0.85m, assists outside adjacent layer
The interlamellar spacing in hole is 0.75m；Wherein the interlamellar spacing of the outer via hole of outermost layer and periphery hole is 0.6m；
The emptying aperture is located on the inside of the outer via hole of innermost layer and arranges along vertical cental axial position, the keyhole, in first
Via hole is respectively positioned on the inside of the outer via hole of innermost layer in via hole and second, and is sequentially located at the emptying aperture two sides from centre to two
Side is arranged symmetrically, and the keyhole, via hole is vertically arranged in first, and via hole is arranged in splayed in described second, described
Bottom plate hole is located at bottommost and horizontally disposed two rows, the keyhole hole depth 1.5-2.0m, upper and lower array pitch 0.6m, the bottom plate hole
Hole depth 1.6-1.8m, the emptying aperture totally 2, hole depth 1.6m.
6. the method for soft rock as claimed in claim 5, high inclination-angle tunnel anchorage digital primer Blasting Excavation, which is characterized in that step
Explosion in S3-S5 is controlled using detonating control system, and blast hole explosive usesEmulsion, emptying aperture not powder charge,
Periphery hole uses underground borehole blasting, and other holes use closely knit charge constitution, and detonator uses high-precision digital detonator, specific explosion
Control process is as follows:
Barcode scanning acquisition is carried out using identity information of the initiator to detonator, and records corresponding detonator numbering；
Check the explosive payload of all kinds of blast holes, when powder charge is grouped blast hole according to explosion design drawing, and by carrying out detonator
Payment to a porter number makes blast hole plug-hole mud item using stemming；
Detonator is connected on quick-fried area's main line using parallel way, setting each group blast hole detonation delay the time, make every group it is quick-fried
Hole-by-hole initiation is realized when holes explosion；
It detects whether all detonators are all connected on quick-fried area's main line, checks the short circuit being likely to occur, breaking problem in time；
Laser scanning and ranging imager is arranged in safe distance position immediately ahead of top bar region；
Quick-fried area's main line is connected to explosion bus, connects explosion bus and initiator；
The input detonation dynamic password on initiator, by grouping detonation, after the completion of every group of detonation, laser scanning and ranging imager pair
Top bar region carries out image scanning and obtains explosion image, calculates the center of gravity of the sunk area in explosion image, selects heavy with this
A nearest blast hole of the heart is grouped into next grouping.
7. the method for soft rock as claimed in claim 6, high inclination-angle tunnel anchorage digital primer Blasting Excavation, which is characterized in that be directed to
Each grouping, if the quantity in current group borehole blasting hole is odd number, the blast hole of middle and sunk area center of gravity away from
From being current group at a distance from sunk area center of gravity, if the quantity in current group borehole blasting hole is even number, middle two
The central point of a blast hole is current group at a distance from sunk area center of gravity at a distance from sunk area center of gravity.
8. the method for soft rock as claimed in claim 7, high inclination-angle tunnel anchorage digital primer Blasting Excavation, which is characterized in that appear on the stage
Rank region arrangement blast hole is grouped as follows:
Keyhole on the left of emptying aperture is first group；
Keyhole on the right side of emptying aperture is second group；
On the left of emptying aperture first in via hole be third group；
On the right side of emptying aperture first in via hole be the 4th group；
On the left of emptying aperture second in via hole be the 5th group；
On the right side of emptying aperture second in via hole be the 6th group；
Bottom plate hole positioned at upper row's left-half is the 7th group；
Bottom plate hole positioned at upper row's right half part is the 8th group；
Bottom plate hole positioned at lower row's left-half is the 9th group；
Bottom plate hole positioned at lower row's left-half is the tenth group；
Outer via hole positioned at innermost layer left-half is the 11st group；
Outer via hole positioned at innermost layer right half part is the 12nd group；
Outer via hole positioned at middle layer left-half is the 13rd group；
Outer via hole positioned at middle layer right half part is the 14th group；
Uniformly it is divided into four groups positioned at outermost outer via hole, is from left to right followed successively by the 16th group, the 15th group, the 17th
Group, the 18th group；
Periphery hole is equally uniformly divided into four groups, is from left to right followed successively by the 20th group, the 19th group, the 21st group, the 20th
Two groups.
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| CN201910341852.XA CN110006300B (en) | 2019-04-26 | 2019-04-26 | Blasting excavation method for soft rock and large-inclination-angle tunnel anchor digital detonator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110360906A (en) * | 2019-07-29 | 2019-10-22 | 华侨大学 | A kind of structure and method in the elevator region to be blasted for reducing ground vibration |
| CN110836115A (en) * | 2019-11-29 | 2020-02-25 | 中铁二十三局集团第四工程有限公司 | Tunnel drilling method adjacent to existing building |
| CN111521081A (en) * | 2020-05-26 | 2020-08-11 | 中建铁路投资建设集团有限公司 | Construction method for reducing explosion-control over-underproduction blasthole of inclined flat-curve tunnel |
| CN113605903A (en) * | 2021-08-31 | 2021-11-05 | 四川公路桥梁建设集团有限公司 | Method for quickly, simply and easily excavating and lining new abnormal anchorage tunnel or arch foundation chamber |
| CN113834393A (en) * | 2021-09-26 | 2021-12-24 | 安徽理工大学 | Internal-throwing type step blasting method |
| CN113605903B (en) * | 2021-08-31 | 2024-04-09 | 四川公路桥梁建设集团有限公司 | Quick, simple and easy-to-operate new excavation and lining method for tunnel or arch base chamber of special anchorage |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110360906A (en) * | 2019-07-29 | 2019-10-22 | 华侨大学 | A kind of structure and method in the elevator region to be blasted for reducing ground vibration |
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