CN107726933B - A kind of middle font reinforces slotting structure and cut shot method - Google Patents
A kind of middle font reinforces slotting structure and cut shot method Download PDFInfo
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- CN107726933B CN107726933B CN201711055941.5A CN201711055941A CN107726933B CN 107726933 B CN107726933 B CN 107726933B CN 201711055941 A CN201711055941 A CN 201711055941A CN 107726933 B CN107726933 B CN 107726933B
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- snubber
- center line
- font
- tunnel
- reinforces
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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
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The present invention relates to rock mass in tunnel sinking and blasting field of engineering technology, including the borehole being distributed on blasting network, the borehole includes center cut eye (1), left side snubber (2) and right side snubber (3), the center cut eye (1) is uniformly distributed in tunnel face Middle face in middle font, and symmetrical middle line is overlapped with the center line (4) of tunnel tunnel face, the left side snubber (2) is set on the left of the center line (4), and the right side snubber (3) is set on the right side of the center line (4).The present invention reinforces snubber by font in increasing and is used to solve that snubber orifice distance is excessive to lead to the halfway disadvantage of explosion, improves Tunnel Blasting pick to a certain extent.
Description
Technical field
The present invention relates to rock mass in tunnel sinking and blasting field of engineering technology more particularly to a kind of middle font to reinforce slotting structure
And cut shot method.
Background technique
In tunnel big gun pick driving, common slotting the structure of the eye of reinforcing is simple, and execute-in-place is easy, but this slotting structure exists
In the case that distance is little between snubber, demolition effect is good, and brisance is enough to blow the rock between snubber, and works as and draw
When distance is larger between slotted eyes, reinforce snubber using common, brisance is not enough to blow the rock between snubber, causes
Explosion resistance increases.
Summary of the invention
The present invention provides a kind of middle font and reinforces slotting structure and cut shot method, solves to reinforce using common in the prior art
The technical issues of snubber, brisance are not enough to blow the rock between snubber, and explosion resistance is caused to increase.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of middle font reinforcement slotting structure, including the borehole being distributed on blasting network, the borehole is drawn including middle part
Slotted eyes 1, left side snubber 2 and right side snubber 3, the center cut eye 1 are uniformly distributed in tunnel tunnel face in middle font
Portion, and symmetrical middle line is overlapped with the center line 4 of tunnel tunnel face, the left side snubber 2 is set to 4 left side of center line, institute
It states right side snubber 3 and is set to 4 right side of center line.
A kind of middle font reinforcement cut shot method, comprising:
The reinforcement snubber of font distribution along the laying of tunnel piercing face center line；
Vertical equally distributed left side snubber and right side snubber are laid in center line arranged on left and right sides；
It is sequentially loaded into a water-saving bag, several section light bursting charges and thunder from the inside to surface in left side snubber and right side snubber
Pipe, a water-saving bag, and blocked with stemming；
Reinforcing being sequentially loaded into a water-saving bag, several section emulsions and detonator, two water-saving bags from the inside to surface in snubber,
And it is blocked with stemming；
Line confirms errorless rear detonation.
The embodiment of the present invention provides a kind of middle font reinforcement slotting structure, including the borehole being distributed on blasting network, institute
Stating borehole includes center cut eye 1, left side snubber 2 and right side snubber 3, and the center cut eye 1 is uniformly distributed in tunnel
Face center line 4, the left side snubber 2 are set to 4 left side of center line, and the right side snubber 3 is set to the center
4 right side of line, the center cut eye 1 are that middle font reinforces snubber.The present invention tunnels Tunnel Blasting, can be between snubber
When spacing is excessive, obtain ideal demolition effect, can reduce snubber spacing it is excessive caused by influence, be same type lithology
Tunnel speedy drivage provides engineering reference.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the drilling schematic diagram of the tunnel tunnel face of the embodiment of the present invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
The embodiment of the invention provides a kind of middle fonts to reinforce slotting structure, as shown in Figure 1, including being distributed in blasting network
On borehole, the borehole includes center cut eye 1, left side snubber 2 and right side snubber 3, during the center cut eye 1 is in
Font is uniformly distributed in tunnel face Middle face, and symmetrical middle line is overlapped with the center line 4 of tunnel tunnel face, the left side slotting
Eye 2 is set to 4 left side of center line, and the right side snubber 3 is set to 4 right side of center line.
Wherein, the quantity of the center cut eye 1 is 8, is uniformly distributed four along center line 4,4 two sides of center line are symmetrical
Two pairs of distribution；2 quantity of left side snubber is 5, is uniformly distributed in 4 left side of center line vertically；The right side slotting
3 quantity of eye are 5, are uniformly distributed in 4 right side of center line vertically.
Spacing between the center cut eye 1 is 25-40cm.
Spacing between the left side snubber 2 is 25-40cm.
Spacing between the right side snubber 3 is 25-40cm.Using snubber pitch of holes appropriate, enable to draw
Slot large area avalanche provides free space and the scope of freedom for the rock of subsequent avalanche, and middle font reinforces snubber and plays enhancing slotting
Effect, provides initial free for snubber explosion.
Light bursting charge is filled in the left side snubber 2 and the right side snubber 3.
Emulsion is filled in the center cut eye 1.
The embodiment of the present invention provides a kind of middle font reinforcement slotting structure, including the borehole being distributed on blasting network, institute
Stating borehole includes center cut eye 1, left side snubber 2 and right side snubber 3, and the center cut eye 1 uniformly divides in middle font
It is distributed in tunnel face Middle face, and symmetrical middle line is overlapped with the center line 4 of tunnel tunnel face, the left side snubber 2 is set to institute
4 left side of center line is stated, the right side snubber 3 is set to 4 right side of center line.The present invention reinforces slotting by font in increasing
Ophthalmically acceptable snubber orifice distance is excessive to lead to the halfway disadvantage of explosion solving, and improves Tunnel Blasting pick to a certain extent.
The embodiment of the invention also provides a kind of middle fonts to reinforce cut shot method, comprising:
Step 101, the reinforcement snubber that font is distributed along the laying of tunnel piercing face center line；
Step 102 lays vertical equally distributed left side snubber and right side snubber in center line arranged on left and right sides；
Step 103, to be sequentially loaded into a water-saving bag, several section light from the inside to surface in left side snubber and right side snubber quick-fried
Explosive and detonator, a water-saving bag, and blocked with stemming；
Step 104, reinforce snubber in be sequentially loaded into from the inside to surface a water-saving bag, several section emulsions and detonator,
Two water-saving bags, and blocked with stemming；
Step 105, line confirm errorless rear detonation.
The step 105 includes:
Select segment blast, i.e., the reinforcement snubber of font distribution in first explosion, then snubber and right side on the left of explosion
Snubber.Font reinforces snubber first in explosion, and rock loosens after reinforcing snubber explosion, and stretching force reduces, then explosion
Snubber.
The present invention is described in detail above, specific case used herein is to the principle of the present invention and embodiment party
Formula is expounded, and the above description of the embodiment is only used to help understand the method for the present invention and its core ideas；Meanwhile it is right
In those of ordinary skill in the art, according to the thought of the present invention, change is had in specific embodiments and applications
Place, in conclusion the contents of this specification are not to be construed as limiting the invention.
Claims (6)
1. a kind of middle font reinforces slotting structure, which is characterized in that including the borehole being distributed on blasting network, the borehole packet
Center cut eye (1), left side snubber (2) and right side snubber (3) are included, the center cut eye (1) is uniformly divided in middle font
It is distributed in tunnel face Middle face, and symmetrical middle line is overlapped with the center line (4) of tunnel tunnel face, the left side snubber (2) sets
On the left of the center line (4), the right side snubber (3) is set on the right side of the center line (4)；
The quantity of the center cut eye (1) is 8, is uniformly distributed four along center line (4), center line (4) two sides are symmetrically divided
Cloth two is right；Left side snubber (2) quantity is 5, is uniformly distributed on the left of the center line (4) vertically；It draws on the right side
Slotted eyes (3) quantity is 5, is uniformly distributed on the right side of the center line (4) vertically；Between between the center cut eye (1)
Away from for 25-40cm；Emulsion is filled in the center cut eye (1).
2. middle font according to claim 1 reinforces slotting structure, which is characterized in that between the left side snubber (2)
Spacing be 25-40cm.
3. middle font according to claim 1 reinforces slotting structure, which is characterized in that between the right side snubber (3)
Spacing be 25-40cm.
4. middle font according to claim 1 reinforces slotting structure, which is characterized in that the left side snubber (2) and institute
It states in right side snubber (3) and is filled with light bursting charge.
5. a kind of reinforce slotting side using the middle font for reinforcing slotting structure such as middle font of any of claims 1-4
Method characterized by comprising
The reinforcement snubber of font distribution along the laying of tunnel piercing face center line；
Vertical equally distributed left side snubber and right side snubber are laid in center line arranged on left and right sides；
Be sequentially loaded into from the inside to surface in left side snubber and right side snubber a water-saving bag, several section light bursting charges and detonator,
One water-saving bag, and blocked with stemming；
Reinforcing being sequentially loaded into a water-saving bag, several section emulsions and detonator, two water-saving bags from the inside to surface in snubber, be used in combination
Stemming blocking；
Line confirms errorless rear detonation.
6. middle font according to claim 5 reinforces cut shot method, which is characterized in that the line confirms errorless rear
It is quick-fried, comprising:
Segment blast is selected, i.e., the reinforcement snubber of font distribution, then snubber and right side slotting on the left of explosion in first explosion
Eye.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711055941.5A CN107726933B (en) | 2017-10-27 | 2017-10-27 | A kind of middle font reinforces slotting structure and cut shot method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711055941.5A CN107726933B (en) | 2017-10-27 | 2017-10-27 | A kind of middle font reinforces slotting structure and cut shot method |
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| Publication Number | Publication Date |
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| CN107726933A CN107726933A (en) | 2018-02-23 |
| CN107726933B true CN107726933B (en) | 2019-12-03 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112747643A (en) * | 2020-12-29 | 2021-05-04 | 中铁十四局集团建筑工程有限公司 | IV-level surrounding rock blasting method suitable for drilling of three-arm rock drilling jumbo |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5634691A (en) * | 1994-07-13 | 1997-06-03 | Sungkyong Engineering & Construction Limited | Method for excavating a working face by blasting |
| KR20120034328A (en) * | 2010-10-01 | 2012-04-12 | 흥도이엔지 주식회사 | Blast method for center hole of tunnel |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101349533B (en) * | 2008-08-05 | 2011-07-27 | 山东科技大学科技产业总公司 | Dip laneway digging hole layout mode |
| CN102914226B (en) * | 2012-11-08 | 2015-04-01 | 中国矿业大学(北京) | Hollow-hole rhombic parallel cut blasting damping method |
| CN103557758B (en) * | 2013-11-01 | 2015-08-05 | 中铁四局集团有限公司 | Expanded excavation area hole inside and outside combined delay subarea differential initiation network in tunnel blasting |
| CN103615941B (en) * | 2013-12-11 | 2015-08-26 | 中铁二十三局集团有限公司 | The blasting method of modernized railway shallow-buried sector |
| CN204177294U (en) * | 2014-03-31 | 2015-02-25 | 江西稀有金属钨业控股集团有限公司 | A kind of road driving undercut blast hole structure |
| CN103983146B (en) * | 2014-05-16 | 2017-01-04 | 河南理工大学 | A kind of hard hard-rock tunnel medium-length hole mixing wedge shape segment algorithm directional fracture Cut Blasting method |
| CN104180729B (en) * | 2014-08-20 | 2015-12-09 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | The layout in driving chassis driving face big gun hole and detonator row phase method |
| CN104613830B (en) * | 2014-12-18 | 2017-01-18 | 招金矿业股份有限公司夏甸金矿 | One-time-formed smooth blasting method for laneway |
| CN104864782A (en) * | 2015-05-16 | 2015-08-26 | 周忠国 | Hard stone drift composite reinforcing vertical wedge cutting method |
| CN106225613B (en) * | 2016-08-25 | 2018-05-22 | 中铁十一局集团第三工程有限公司 | A kind of efficient segmentation method of ignition in tunnel excavating process |
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- 2017-10-27 CN CN201711055941.5A patent/CN107726933B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5634691A (en) * | 1994-07-13 | 1997-06-03 | Sungkyong Engineering & Construction Limited | Method for excavating a working face by blasting |
| KR20120034328A (en) * | 2010-10-01 | 2012-04-12 | 흥도이엔지 주식회사 | Blast method for center hole of tunnel |
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| CN107726933A (en) | 2018-02-23 |
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