CN207197379U - A kind of tunnel surrounding blasting system - Google Patents
A kind of tunnel surrounding blasting system Download PDFInfo
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- CN207197379U CN207197379U CN201720867905.8U CN201720867905U CN207197379U CN 207197379 U CN207197379 U CN 207197379U CN 201720867905 U CN201720867905 U CN 201720867905U CN 207197379 U CN207197379 U CN 207197379U
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Abstract
It the utility model is related to a kind of tunnel surrounding blasting system, including charge constitution, borehole arrangement and detector for electronic detonator network structure, the detonating capsule that the charge constitution includes the quick-fried powder stick of light and its end is set, described detonating capsule one end is provided with detonator line and stretched out outside charge constitution, it is stemming in one end away from the detonating capsule, the charge constitution uses not coupled modes powder charge；The utility model has the advantages that charge constitution uses Uncoincided charge so that retains certain gap between pack surface and borehole hole wall, can protect the integrity degree of explosion, to prevent being cracked and reducing crack, keeps rock stability；Three kinds of structures are combined the explosion for carrying out tunnel surrounding, precisely and safety, while use manpower and material resources sparingly and time cost.
Description
Technical field
Tunnel Blasting technical field of construction is the utility model is related to, more particularly, to a kind of tunnel surrounding blasting system.
Background technology
When selecting excavation method, tunnel cross-section size and shape, the engineering geological condition of country rock, buried depth, supporting are tackled
The correlative factors such as condition, execution conditions, environmental condition, construction period, quantities, mechanical arrangements ability, construction safety, economy
Comprehensive analysis is carried out, using appropriate excavation method, should be especially adapted with supporting.In constructing tunnel, excavation method is to influence
One of an important factor for adjoining rock stability.Drilling and blasting method is still China's tunneling method most widely used, most ripe at present.At present
Conventional tunnel excavation method has full section method, benching tunnelling method, CD methods, CRD methods, two side-wall pilot tunnel.But do not have in the prior art
There is a set of overall blasting system, be required for carrying out step measurement to concrete condition every time, then go to study specific explosion again
Scheme, expend time and manpower and materials.
Existing file (the application number of granted patent：201220655563.0) disclose a kind of Tunnel Blasting construction ring
Driling explosion device, its mainly solve the problems, such as be lack in the prior art a kind of reasonable in design, installation lay it is convenient and
Using constructing tunnel driling explosion equipment easy to operate, that using effect is good, it can disposably complete to lay in ring automatically
Multiple blastholes open up with explosive launch process, blast working efficiency is greatly improved, has saved the engineering time, and explosion
Construction quality is easy to ensure.Its main technical schemes is：Ring driling explosion device, including master control are used in a kind of Tunnel Blasting construction
Device, the hydraulic lifting frame on front side of country rock explosion face, hydraulic drive motor one, level are on hydraulic lifting frame
Hydraulic rotating bearing, hydraulic drive motor two, it is laid on hydraulic lifting frame and the adjustable height of hydraulic lifting frame is carried out in fact
When detect height detection unit, rotation angle detecting unit, the ring driling explosion frame on hydraulic rotating bearing
With and the parameter set unit and display unit that connect respectively with main controller；Ring driling explosion frame includes frame monitoring dress
Put, trunnion axis and rotating disk, rotating disk include disk and circular baffle plate, be laid with inside disk multiple synchronization actions electrodrill and
Multiple blastings charge launch hole.It is different from the technical solution of the utility model.
Utility model content
The purpose of this utility model is to solve the above problems, there is provided a kind of accurate, safe and cost-effective tunnel surrounding
Blasting system.
To achieve the above object, the utility model provides following technical scheme：
A kind of tunnel surrounding blasting system, including charge constitution, borehole arrangement and detector for electronic detonator network structure, it is described
The detonating capsule that charge constitution includes the quick-fried powder stick of light and its end is set, described detonating capsule one end are provided with detonator line and stretch out powder charge
Be stemming in one end away from the detonating capsule outside structure, during photoface exploision, the charge constitution use not coupled modes
Powder charge；
Further, the borehole arrangement is provided with bottom plate hole, cut spreader hole, keyhole, via hole and periphery hole, described
The via hole and periphery hole of borehole arrangement are arc shooting, and bottom plate hole is arranged in parallel along ground, and keyhole is drawn using wedge shape
Groove mode arranges, and its 65-70 ° of angle with working face；
Further, the detector for electronic detonator network structure is provided with electric detonator circuit, the detector for electronic detonator network structure
Electric detonator circuit is arc shooting, and is connected with each blasthole.
Further, the coefficient of coup is not 1.25~1.5 to the charge constitution.
As a kind of optimal technical scheme of the present utility model, the keyhole of the borehole arrangement is two rows, blasthole
Number is 6.
As a kind of optimal technical scheme of the present utility model, the auxiliary hole depth is 1.2m, spacing 1m；The bottom
Plate hole spacing is 0.7m, and aperture should be higher by 0.1-0.2m than bottom plate, but its bottom hole should be less than bottom plate 0.1-0.2m, and its explosive payload should
Between keyhole and via hole, shot elevation is 0.5-0.7 times of hole depth.
As a kind of optimal technical scheme of the present utility model, the detector for electronic detonator network structure uses hole-by-hole initiation, institute
It is 8ms to state the keyhole time difference, and the periphery hole time difference is 4ms.
The blasthole number calculation formula of the borehole arrangement is：
NEye=0.0012qS/ad2
In formula：N --- borehole number (individual),
Q --- powder factor,
S --- excavated section area (m2),
A --- borehole packing factor,
D --- powder stick diameter.
The subregion firing order of photoface exploision is：
Keyhole --- via hole --- periphery hole --- bottom plate hole.Using multistage delay initiation (from inside to outside), wherein
The periphery hole in Zhu Bao areas jumps 2 sections of detonations than via hole, and with same section of detonator.
The beneficial effects of the utility model are：
Charge constitution uses Uncoincided charge so that retains certain gap between pack surface and borehole hole wall, not coupling
Syzygy number is 1.25~1.5, can protect the integrity degree of explosion, to prevent being cracked and reducing crack, keeps rock stability；Slotting
The hole time difference is 8ms, and the periphery hole time difference is 4ms, can play good drop and shake effect；Benching tunnelling method construction is by structure section
It is divided into two or several parts, there is upper and lower two working faces of section or multiple working faces, step excavation.Its advantage is flexibly more
Become, strong applicability, have enough working spaces and faster speed of application, can close supporting earlier, be advantageous to excavation face
Stability and control its malformation and thus caused surface subsidence；Photoface exploision can efficiently control periphery hole explosive
Blast action, so as to reduce the disturbance to country rock, the stabilization of country rock is kept, gives full play to the self-supporting of country rock, it is ensured that construction
Safety, meanwhile, and can reduces super, deficient digging, improves construction quality and efficiency, cost-effective.Three kinds of structures are combined carry out tunnel
The explosion of country rock, precisely and safety, while use manpower and material resources sparingly and time cost.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment technical scheme, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only the utility model in order to more clearly
Illustrate the utility model embodiment or technical scheme of the prior art, below will be to needed for embodiment or description of the prior art
The accompanying drawing to be used is briefly described, and for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is photoface exploision periphery hole charge constitution schematic diagram；
Fig. 2 is photoface exploision keyhole charge constitution schematic diagram；
Fig. 3 is photoface exploision bottom plate hole, via hole charge constitution schematic diagram；
Fig. 4 is two benching tunnelling methods construction borehole arrangement figure；
Fig. 5 is two benching tunnelling method detector for electronic detonator network connection structure diagrams；
Fig. 6 is that keyhole arranges schematic diagram.
Embodiment
A kind of tunnel surrounding blasting system as Figure 1-3, including charge constitution 1, borehole arrangement 2 and electronics thunder
Pipe network line structure 3, the detonating capsule 12 that the charge constitution 1 includes the quick-fried powder stick 13 of light and its end is set, the detonating capsule
12 one end are provided with detonator line 11 and stretched out outside charge constitution 1, are stemming 14 in one end away from the detonating capsule 12, the dress
Medicine structure 1 uses not coupled modes powder charge；
Such as Fig. 4, the borehole arrangement 2 is provided with bottom plate hole 21, cut spreader hole 22, keyhole 23, via hole 24 and periphery
Hole 25, the via hole 24 and periphery hole 25 of the borehole arrangement 2 are arc shooting, and bottom plate hole 21 is arranged in parallel along ground；
When stemming 14 is less than 20cm, the charge constitution of periphery hole 25 is as shown in figure 1, when the total length of stemming 14 blocks, the powder charge of keyhole 23
For structure as shown in Fig. 2 when stemming 14 is less than 30cm, bottom plate hole 21, the charge constitution of via hole 24 are as shown in Figure 3.
Such as Fig. 6, keyhole 23 is arranged using V-cut mode, and its 65-70 ° of angle with working face；The borehole
Each blasthole arrangement mode of arrangement 5 is arranged in parallel and the quick-fried powder stick 13 of half of standard light is placed in bottom；The borehole arrangement
The keyhole 23 of structure 2 is two rows, and blasthole number is 6.
Further, the detector for electronic detonator network structure 3 is provided with electric detonator circuit 31, such as Fig. 5, the electric detonator net
The electric detonator circuit 31 of line structure 3 is arc shooting, and is connected with each blasthole；Further, the charge constitution 1 not coupling
Syzygy number is 1.25~1.5.
As a kind of optimal technical scheme of the present utility model, the depth of via hole 24 is 1.2m, spacing 1m；It is described
The spacing of bottom plate hole 21 is 0.7m, and aperture should be higher by 0.1-0.2m than bottom plate, but its bottom hole should be less than bottom plate 0.1-0.2m, its powder charge
Amount should be between keyhole 23 and via hole 24, and shot elevation is 0.5-0.7 times of hole depth.
As a kind of optimal technical scheme of the present utility model, the detector for electronic detonator network structure 3 uses hole-by-hole initiation, institute
It is 8ms to state the time difference of keyhole 23, and the time difference of periphery hole 25 is 4ms.
The blasthole number calculation formula of the borehole arrangement is：
NEye=0.0012qS/ad2
In formula：N --- borehole number (individual),
Q --- powder factor,
S --- excavated section area (m2),
A --- borehole packing factor,
D --- powder stick diameter.
(1) keyhole uses V-cut mode, and two artillery salvo hole aperture spacing set 65-70 ° of the angle of blasthole and working face,
Blasthole number 6.
(2) via hole parameter
The depth L of via hole 24 is designed as 1.2m, and the spacing of via hole 24 takes 1m, and circle remote takes 0.8m with burden.
(3) major parameter of photoface exploision has：Blasthole diameter d, blasthole spacing E, the quick-fried thickness degree W light of light, periphery hole are intensive
Coefficient m, not coefficient of coup D and powder charge line density q, typically take：
D=40mm；
E=(8-18) d=320-720mm, takes 500mm；
WLight=(10-12) d=400-480mm, take 450mm；
M=E/WLight=600/400=1.5；
D=dHole/dIt is fried=40/32=1.25；
Q=0.1-0.2kg/m, take 0.2kg/m.
(4) bottom plate hole
Bottom plate hole 21 is arranged relatively difficult, blind big gun is also easy to produce when having ponding, the spacing of bottom plate hole 21 takes 0.7m.Aperture Ying Bi lanes
Road bottom plate is higher by 0.1-0.2m, but its bottom hole should be less than bottom plate 0.1-0.2m.Its explosive payload should be between keyhole 23 and via hole
Between 24, shot elevation is 0.5-0.7 times of hole depth.
(5) blashole charge coefficient
The borehole fill factor table of table 1
| Borehole title | Keyhole | Via hole | Bottom plate hole | Periphery hole |
| Blast hole depth | 1.3 | 1.2 | 1.3 | 1.2 |
| Coefficient of charge | 75% | 70% | 75% | ---- |
(6) charge constitution and detonation mode
Photoface exploision uses Uncoincided charge, and typically the coefficient of coup is not 1.25~1.5 to hard rock, and powder charge collection is pressed in blashole charge
The dose that moderate calculates uniformly loads in borehole.To overcome the resistance of sumper, half of standard powder stick is put in borehole bottom,
The quick-fried layer of light is set to be easy to depart from rock mass.Charge constitution, borehole arrangement, detector for electronic detonator network connection figure such as Fig. 1-3 institutes in construction
Show.
During using electronic detonator priming circuit, the detonating delay time of electric detonator can arbitrarily be set, therefore can be realized hole-specifically
Detonation, conventional electronic detonator blasting Results of Vibration show that keyhole 23 is the 8ms time differences, and periphery hole 25 is that the 4ms time differences can
Play good drop to shake effect, therefore, top bar is designed by the time difference.
(7) the subregion firing order of photoface exploision is：
--- via hole 24 --- periphery hole 25 --- bottom plate hole 21 of keyhole 23.Using multistage delay initiation (by introversion
Outside), the periphery hole 25 in wherein Zhu Bao areas jumps 2 sections of detonations than via hole 24, and with same section of detonator.
(8) each hole explosive payload and total charge
Total charge and each hole explosive payload, refer to table 2 and table 3：
2 liang of benching tunnelling method construction and excavation top blasting parameter tables of table
3 liang of benching tunnelling method construction and excavation lower right zone blasting parameter tables of table
Charge constitution 1 uses Uncoincided charge so that retains certain gap between pack surface and blasthole hole wall, not coupling
Syzygy number is 1.25~1.5, can protect the integrity degree of explosion, to prevent being cracked and reducing crack, keeps rock stability；Three kinds
Structure is combined the explosion for carrying out tunnel surrounding, precisely and safety, while uses manpower and material resources sparingly and time cost.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (5)
1. a kind of tunnel surrounding blasting system, it is characterised in that including charge constitution (1), borehole arrangement (2) and electronics thunder
Pipe network line structure (3), the detonating capsule (12) that the charge constitution (1) includes the quick-fried powder stick of light (13) and its end is set are described
Detonating capsule (12) one end is provided with detonator line (11) and stretched out outside charge constitution (1), in one away from the detonating capsule (12)
Hold and use not coupled modes powder charge for stemming (14), the charge constitution (1)；
The borehole arrangement (2) is provided with bottom plate hole (21), cut spreader hole (22), keyhole (23), via hole from lower to upper
(24) and periphery hole (25), the via hole (24) and periphery hole (25) of the borehole arrangement (2) are arc shooting, bottom plate hole
(21) arranged in parallel along ground, keyhole (23) is arranged using V-cut mode, and the angle of itself and working face is 65-70 °；
The detector for electronic detonator network structure (3) is provided with electric detonator circuit (31), the electronics of the detector for electronic detonator network structure (3)
Detonator circuit (31) is arc shooting, and is connected with each blasthole.
A kind of 2. tunnel surrounding blasting system according to claim 1, it is characterised in that the charge constitution (1) not coupling
Syzygy number is 1.25~1.5.
3. a kind of tunnel surrounding blasting system according to claim 1, it is characterised in that the keyhole (23) is two
Row, blasthole number are 6.
A kind of 4. tunnel surrounding blasting system according to claim 1, it is characterised in that the detector for electronic detonator network structure
(3) hole-by-hole initiation, keyhole (23) time difference are 8ms, and periphery hole (25) time difference is 4ms.
A kind of 5. tunnel surrounding blasting system according to claim any one of 1-4, it is characterised in that the via hole
(24) depth is 1.2m, spacing 1m；Bottom plate hole (21) spacing is 0.7m, and aperture is higher by 0.1-0.2m, and hole than bottom plate
Bottom is less than bottom plate 0.1-0.2m, and explosive payload should be between keyhole (23) and via hole (24), and shot elevation is hole depth
0.5-0.7 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720867905.8U CN207197379U (en) | 2017-07-18 | 2017-07-18 | A kind of tunnel surrounding blasting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720867905.8U CN207197379U (en) | 2017-07-18 | 2017-07-18 | A kind of tunnel surrounding blasting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207197379U true CN207197379U (en) | 2018-04-06 |
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ID=61784812
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720867905.8U Expired - Fee Related CN207197379U (en) | 2017-07-18 | 2017-07-18 | A kind of tunnel surrounding blasting system |
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| CN (1) | CN207197379U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388856A (en) * | 2019-08-29 | 2019-10-29 | 昆明理工大学 | A kind of smooth blasting method of tunnel piercing |
| CN112880499A (en) * | 2021-02-01 | 2021-06-01 | 中交路桥北方工程有限公司 | Smooth blasting method for tunnel weak surrounding rock |
-
2017
- 2017-07-18 CN CN201720867905.8U patent/CN207197379U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388856A (en) * | 2019-08-29 | 2019-10-29 | 昆明理工大学 | A kind of smooth blasting method of tunnel piercing |
| CN112880499A (en) * | 2021-02-01 | 2021-06-01 | 中交路桥北方工程有限公司 | Smooth blasting method for tunnel weak surrounding rock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180406 Termination date: 20190718 |