CN107883822B - A kind of reinforcement slotting correction structure and cut shot method - Google Patents
A kind of reinforcement slotting correction structure and cut shot method Download PDFInfo
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- CN107883822B CN107883822B CN201711055885.5A CN201711055885A CN107883822B CN 107883822 B CN107883822 B CN 107883822B CN 201711055885 A CN201711055885 A CN 201711055885A CN 107883822 B CN107883822 B CN 107883822B
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- snubber
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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
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The present invention relates to rock mass in tunnel sinking and blasting field of engineering technology, disclose a kind of reinforcement slotting correction structure and cut shot method, it include: that tunnel center line vallecular cavity midpoint apart from bottom plate specified distance is arranged vertically two reinforcement snubbers (1), three pairs of main snubbers (2) and two pairs of correction snubbers (3) are arranged symmetrically in reinforcement snubber (1) two sides, form compound reinforcement vertical wedge cut, the main snubber (2) is that aperture spacing is big, the closely spaced wedge shape of bottom hole, the longitudinal section of correction snubber (3) is rectangle, the cross section of the main snubber (2) is isosceles trapezoid；The depth for reinforcing snubber (1) is less than the depth of correction snubber (3), and the depth of correction snubber (3) is less than the depth of main snubber (2).The present invention can be reduced because explosion is undesirable caused by tunnel width is larger or formation hardness is larger, reaches preferable demolition effect, provides reference for the Tunnel Blasting tunneling construction work of same type.
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 reinforcement slotting correction structure and
Cut shot method.
Background technique
In Tunnel Blasting tunneling construction, V-cut mode is mostly used, is the operation letter because this cutting method is easy
It is single, but when tunnel width is larger or formation hardness is larger, blasting efficiency is often not satisfactory.The main reason for this problem is to draw
Slot is difficult, and the quality of slotting decides that blasting efficiency, good cutting method can improve demolition effect, improves explosion effect
Rate.
Summary of the invention
The present invention provides a kind of reinforcement slotting correction structure and cut shot method, and the V-cut mode in the prior art that solves is worked as
When tunnel width is larger or formation hardness is larger, the technical issues of blasting efficiency is often not satisfactory.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of reinforcement slotting correction structure, comprising: tunnel center line vallecular cavity midpoint is apart from the vertical cloth of bottom plate specified distance
Two reinforcement snubbers 1 are set, are arranged symmetrically three pairs of main snubbers 2 and two pairs of correction snubbers in 1 two sides of reinforcement snubber
3, compound reinforcement vertical wedge cut is formed, the main snubber 2 is that aperture spacing is big, and the closely spaced wedge shape of bottom hole is described to change
The longitudinal section of positive snubber 3 is rectangle, and the cross section of the main snubber 2 is isosceles trapezoid；The reinforcement snubber 1
Depth is less than the depth of the correction snubber 3, and the depth of the correction snubber 3 is less than the depth of main snubber 2.
A kind of cut shot method for reinforcing slotting correction structure, comprising:
It draws center line, reinforce snubber, main snubber and the location and shape for correcting snubber；
Same millisecond blasting reinforces snubber and main snubber；
After reinforcing snubber and main snubber explosion, snubber is corrected in explosion.
The present invention provides a kind of reinforcement slotting correction structure and cut shot method, according to.
The present invention can be reduced using the cutting method for reinforcing snubber and correction snubber because tunnel width is larger or rock
Explosion caused by hardness is larger is undesirable, reaches preferable demolition effect, mentions for the Tunnel Blasting tunneling construction work of same type
For 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 that the structural schematic diagram of structure is corrected in a kind of reinforcement slotting 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.
As shown in Figure 1, for a kind of reinforcement slotting correction structure provided in an embodiment of the present invention, comprising: tunnel center wire casing
Chamber midpoint is arranged vertically two reinforcement snubbers 1 apart from bottom plate specified distance, is arranged symmetrically in 1 two sides of reinforcement snubber
Three pairs of main snubbers 2 and two pairs of correction snubbers 3, form compound reinforcement vertical wedge cut, the main snubber 2 is between aperture
Away from big, the closely spaced wedge shape of bottom hole, the longitudinal section of the correction snubber 3 is rectangle, and the cross section of the main snubber 2 is equal
For isosceles trapezoid；The depth for reinforcing snubber 1 is less than the depth of the correction snubber 3, the depth of the correction snubber 3
Degree is less than the depth of main snubber 2.
Wherein, the reinforcement snubber 1 is overlapped with tunnel center line, and depth is 2.0~3.5m.
Aperture spacing between the main snubber 2 is 2.4~4.0m, and bottom hole spacing is 0.2m, the main snubber 2
Depth is 3.0~5.0m.
The aperture spacing of the correction snubber 3 and main snubber 2 is 0.1m.
The depth for reinforcing snubber 1 is 2.0~3.0m, and the depth of the main snubber 2 is 3.0~5.0m, described
The depth for correcting snubber 3 is 2.5~4.0m.
The aperture base angle reinforced snubber 1 and correct snubber 3 is 90 °, the aperture base angle of the main snubber 2
It is 65 °~70 °.
The present invention can be reduced using the cutting method for reinforcing snubber and correction snubber because tunnel width is larger or rock
Explosion caused by hardness is larger is undesirable, reaches preferable demolition effect, mentions for the Tunnel Blasting tunneling construction work of same type
For reference.
The embodiment of the invention also provides a kind of cut shot method of reinforcement slotting correction structure, comprising:
It draws center line, reinforce snubber 1, main snubber 2 and the location and shape for correcting snubber 3；
Same millisecond blasting reinforces snubber 1 and main snubber 2；
After reinforcing snubber 1 and 2 explosion of main snubber, snubber 3 is corrected in explosion.
Wherein, the reinforcement snubber 1 and main snubber 2 select two sections of blasting cap initiations, and correction snubber 3 is risen using four sections
It is quick-fried.
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. structure is corrected in a kind of reinforcement slotting characterized by comprising tunnel center line vallecular cavity midpoint is apart from bottom plate specific range
Place is arranged vertically two reinforcement snubbers (1), reinforcement snubber (1) two sides be arranged symmetrically three pairs of main snubbers (2) and
Two pairs of correction snubbers (3) form compound reinforcement vertical wedge cut, and the main snubber (2) is that aperture spacing is big, between bottom hole
Away from small wedge shape, the longitudinal section of correction snubber (3) is rectangle, and the cross section of the main snubber (2) is isosceles
It is trapezoidal；The depth for reinforcing snubber (1) is less than the depth of correction snubber (3), the depth of correction snubber (3)
Degree is less than the depth of main snubber (2)；
The reinforcement snubber (1) is overlapped with tunnel center line, and depth is 2.0~3.5m, between the main snubber (2)
Aperture spacing is 2.4~4.0m, and bottom hole spacing is 0.2m, and the depth of the main snubber (2) is 3.0~5.0m.
2. structure is corrected in reinforcement slotting according to claim 1, which is characterized in that the correction snubber (3) is drawn with master
The aperture spacing of slotted eyes (2) is 0.1m.
3. structure is corrected in reinforcement slotting according to claim 1, which is characterized in that the depth for reinforcing snubber (1)
For 2.0~3.0m, the depth of correction snubber (3) is 2.5~4.0m.
4. structure is corrected in reinforcement slotting according to claim 1, which is characterized in that the reinforcement snubber (1) and correction
The aperture base angle of snubber (3) is 90 °, and the aperture base angle of the main snubber (2) is 65 °~70 °.
5. a kind of cut shot method using such as reinforcement slotting correction structure of any of claims 1-4, feature exist
In, comprising:
The location and shape drawn center line, reinforce snubber (1), main snubber (2) and correction snubber (3)；
Same millisecond blasting reinforces snubber (1) and main snubber (2)；
After reinforcing snubber (1) and main snubber (2) explosion, snubber (3) are corrected in explosion.
6. the cut shot method according to claim 5 for reinforcing slotting correction structure, which is characterized in that the reinforcement snubber
(1) and main snubber (2) selects two sections of blasting cap initiations, and correction snubber (3) is using four sections of detonations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711055885.5A CN107883822B (en) | 2017-10-27 | 2017-10-27 | A kind of reinforcement slotting correction structure and cut shot method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711055885.5A CN107883822B (en) | 2017-10-27 | 2017-10-27 | A kind of reinforcement slotting correction structure and cut shot method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107883822A CN107883822A (en) | 2018-04-06 |
| CN107883822B true CN107883822B (en) | 2019-12-03 |
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| KR970007384B1 (en) * | 1994-07-13 | 1997-05-08 | Sunkyong Const Co | Method for excavating a working face |
| KR101212606B1 (en) * | 2010-10-01 | 2012-12-14 | 흥도이엔지 주식회사 | Blast method for center hole of tunnel |
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|---|---|---|---|---|
| CN101349533A (en) * | 2008-08-05 | 2009-01-21 | 山东科技大学科技产业总公司 | Dip laneway digging hole layout mode |
| CN102914226A (en) * | 2012-11-08 | 2013-02-06 | 中国矿业大学(北京) | Hollow-hole rhombic parallel cut blasting damping method |
| CN103557758A (en) * | 2013-11-01 | 2014-02-05 | 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 |
| CN103615941A (en) * | 2013-12-11 | 2014-03-05 | 中铁二十三局集团有限公司 | Method for blasting shallow section of modernization railway tunnel |
| 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 |
| CN103983146A (en) * | 2014-05-16 | 2014-08-13 | 河南理工大学 | Medium-length hole mixed wedge cut blasting method capable of realizing directed fracture using cutting cartridge bag for solid rock roadway |
| CN104180729A (en) * | 2014-08-20 | 2014-12-03 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Method for arrangement of blast holes of driving working face of driving trolley and detonator grading |
| CN104613830A (en) * | 2014-12-18 | 2015-05-13 | 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 |
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| Publication number | Publication date |
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| CN107883822A (en) | 2018-04-06 |
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