CN107655369B - I-shaped reinforced cut structure and cut method - Google Patents
I-shaped reinforced cut structure and cut method Download PDFInfo
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- CN107655369B CN107655369B CN201711024822.3A CN201711024822A CN107655369B CN 107655369 B CN107655369 B CN 107655369B CN 201711024822 A CN201711024822 A CN 201711024822A CN 107655369 B CN107655369 B CN 107655369B
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- hole
- undermining
- holes
- central line
- blasting
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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 relates to the technical field of tunnel rock mass tunneling blasting engineering, which comprises blast holes distributed on a blasting network, wherein each blast hole comprises a middle cut hole (1), a left cut hole (2) and a right cut hole (3), the middle cut holes (1) are uniformly distributed on a tunnel face central line (4), the left cut hole (2) is arranged on the left side of the central line (4), the right cut hole (3) is arranged on the right side of the central line (4), and the middle cut holes (1) are I-shaped reinforced cut holes. The invention can obtain ideal blasting effect when the distance between the cutting holes is overlarge for blasting and tunneling the tunnel, can reduce the influence caused by the overlarge distance between the cutting holes and provides engineering reference for the rapid tunneling of the tunnel with the same type of lithology.
Description
Technical Field
The invention relates to the technical field of tunnel rock mass tunneling blasting engineering, in particular to an I-shaped reinforced cut structure and a cut method.
Background
In the tunneling process of the tunnel blasting, the structure of a common reinforced cutting hole is simple, the field operation is easy, but under the condition that the distance between the cutting holes is not large, the blasting effect is good, the blasting power is enough to blast rocks between the cutting holes, when the distance between the cutting holes is large, the common reinforced cutting hole is adopted, the blasting power is not enough to blast rocks between the cutting holes, the blasting resistance is increased, the blasting effect of the cutting holes on the left side of a central line (20) and the cutting holes on the right side of the central line (20) behind is influenced, the main reason is that the cutting blasting is difficult, the blasting effect is determined by the quality of the reinforced cutting structure and the cutting method, and the blasting effect can be improved by selecting the correct reinforced cutting structure and the cutting method.
Disclosure of Invention
The invention provides an I-shaped reinforced cutting structure and a cutting method, which solve the technical problem that the blasting resistance is increased because the blasting power is not enough to blast rocks between cutting holes by adopting common reinforced cutting holes in the prior art.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a cut structure is strengthened to I shape, is including distributing the big gun hole on blasting network, the big gun hole includes middle part undercut hole 1, left side undercut hole 2 and right side undercut hole 3, middle part undercut hole 1 evenly distributed is in tunnel face central line 4, left side undercut hole 2 is located central line 4 left side, right side undercut hole 3 is located central line 4 right side, middle part undercut hole 1 is I shape enhancement undercut hole.
An I-shaped reinforcing undercutting method comprises the following steps:
arranging I-shaped distributed reinforcing cut holes along the center line of the tunneling face;
vertically and uniformly distributed left-side slotted holes and right-side slotted holes are distributed on the left side and the right side of the central line;
a water-saving bag, a plurality of sections of light explosive, a detonator and a water-saving bag are sequentially arranged in the left-side cutting hole and the right-side cutting hole from inside to outside and are blocked by stemming;
sequentially filling a water bag, a plurality of sections of emulsion explosive, a detonator and two water bags into the reinforced underholing hole from inside to outside, and blocking the reinforced underholing hole by using stemming;
and connecting the wires, and detonating after no error is confirmed.
The embodiment of the invention provides an I-shaped reinforced undermining structure which comprises blast holes distributed on a blasting network, wherein each blast hole comprises a middle undermining hole 1, a left undermining hole 2 and a right undermining hole 3, the middle undermining holes 1 are uniformly distributed on a central line 4 of a tunnel face, the left undermining holes 2 are arranged on the left side of the central line 4, the right undermining holes 3 are arranged on the right side of the central line 4, and the middle undermining holes 1 are I-shaped reinforced undermining holes. The invention can obtain ideal blasting effect when the distance between the cutting holes is overlarge for blasting and tunneling the tunnel, can reduce the influence caused by the overlarge distance between the cutting holes and provides engineering reference for the rapid tunneling of the tunnel with the same type of lithology.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a schematic view of drilling a tunnel face of a tunnel according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The embodiment of the invention provides an I-shaped reinforced cutting structure, which comprises blast holes distributed on a blasting network as shown in figure 1, wherein each blast hole comprises a middle cutting hole 1, a left cutting hole 2 and a right cutting hole 3, the middle cutting holes 1 are uniformly distributed on a central line 4 of a tunnel face, the left cutting hole 2 is arranged on the left side of the central line 4, the right cutting hole 3 is arranged on the right side of the central line 4, and the middle cutting holes 1 are I-shaped reinforced cutting holes.
The middle slotted holes 1 are 9I-shaped reinforcing slotted holes which are symmetrically distributed relative to the central line 4; the number of the left-side slotted holes 2 is 5, and the left-side slotted holes are vertically and uniformly distributed on the left side of the central line 4; the number of the right-side cutting holes 3 is 5, and the right-side cutting holes are vertically and uniformly distributed on the right side of the central line 4.
The distance between the middle cutting holes 1 is 30-40 cm.
The distance between the left-side slotted holes 2 is 30-40 cm.
The distance between the right-side cutting holes 3 is 30-40 cm.
And light explosive is filled in the left side cut hole 2 and the right side cut hole 3.
And emulsion explosive is filled in the middle undermining hole 1.
The embodiment of the invention provides an I-shaped reinforced undermining structure which comprises blast holes distributed on a blasting network, wherein each blast hole comprises a middle undermining hole 1, a left undermining hole 2 and a right undermining hole 3, the middle undermining holes 1 are uniformly distributed on a central line 4 of a tunnel face, the left undermining holes 2 are arranged on the left side of the central line 4, the right undermining holes 3 are arranged on the right side of the central line 4, and the middle undermining holes 1 are I-shaped reinforced undermining holes. The invention can obtain ideal blasting effect when the distance between the cutting holes is overlarge for blasting and tunneling the tunnel, can reduce the influence caused by the overlarge distance between the cutting holes and provides engineering reference for the rapid tunneling of the tunnel with the same type of lithology.
The embodiment of the invention also provides an I-shaped reinforced undermining method, which comprises the following steps:
101, arranging I-shaped distributed reinforcing cut holes along the center line of a tunneling face;
102, distributing a left side slotted hole and a right side slotted hole which are vertically and uniformly distributed on the left side and the right side of a central line;
103, sequentially filling a water-saving bag, a plurality of sections of light explosive and detonators and a water-saving bag in the left undermining hole and the right undermining hole from inside to outside, and blocking the holes by stemming;
step 104, sequentially filling a water-saving bag, a plurality of sections of emulsion explosives, a detonator and two water-saving bags into the reinforced underholing hole from inside to outside, and blocking the hole by using stemming;
and 105, connecting the wires, and detonating after no fault is confirmed.
The step 105 comprises:
and (3) selecting sectional blasting, namely blasting I-shaped distributed reinforcing slotted holes, and then blasting the left slotted hole and the right slotted hole. Firstly, the I-shaped reinforced slotted holes are blasted, rock strata between the slotted holes are loosened after the reinforced slotted holes are blasted, and resistance is reduced.
The present invention has been described in detail, and the principle and embodiments of the present invention are explained herein by using specific examples, which are only used to help understand the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (9)
1. The utility model provides a cut structure is strengthened to I shape, a serial communication port, including distributing in the blast hole on the blasting network, the blast hole includes middle part undercut hole (1), left side undercut hole (2) and right side undercut hole (3), middle part undercut hole (1) evenly distributed is in tunnel face central line (4), left side undercut hole (2) are located central line (4) left side, right side undercut hole (3) are located central line (4) right side, middle part undercut hole (1) are I shape enhancement undercut hole.
2. An I-shaped reinforcing undermining structure according to claim 1, characterised in that said central undermining holes (1) are 9 in number and are symmetrically distributed in an I-shape with respect to said central line (4); the number of the left-side slotted holes (2) is 5, and the left-side slotted holes are vertically and uniformly distributed on the left side of the central line (4); the number of the right-side cutting holes (3) is 5, and the right-side cutting holes are vertically and uniformly distributed on the right side of the central line (4).
3. An I-shaped reinforcing undermining structure according to claim 2, characterised in that the spacing between the central undermining eyes (1) is 30-40 cm.
4. An I-shaped reinforcing undermining structure according to claim 2, characterised in that the distance between the left undermining eyes (2) is 30-40 cm.
5. An i-shaped reinforcing undermining structure according to claim 2, characterised in that the distance between the right undermining eyes (3) is 30-40 cm.
6. An I-shaped reinforced plunge cut structure according to claim 2, characterized in that the left undercut hole (2) and the right undercut hole (3) are filled with light explosive.
7. An I-shaped reinforced undermining structure according to claim 2, characterized in that the middle undermining hole (1) is filled with emulsion explosive.
8. An i-shaped reinforcing undermining method, characterized in that the i-shaped reinforcing undermining structure of any claim 1 to 7 is adopted, comprising:
arranging I-shaped distributed reinforcing cut holes along the center line of the tunneling face;
vertically and uniformly distributed left-side slotted holes and right-side slotted holes are distributed on the left side and the right side of the central line;
a water-saving bag, a plurality of sections of light explosive, a detonator and a water-saving bag are sequentially arranged in the left-side cutting hole and the right-side cutting hole from inside to outside and are blocked by stemming;
sequentially filling a water bag, a plurality of sections of emulsion explosive, a detonator and two water bags into the reinforced underholing hole from inside to outside, and blocking the reinforced underholing hole by using stemming;
and connecting the wires, and detonating after no error is confirmed.
9. An i-shaped reinforcing undermining method as claimed in claim 8, wherein said connecting line, when verified as error-free, is initiated, comprises:
and (3) selecting sectional blasting, namely blasting I-shaped distributed reinforcing slotted holes, and then blasting the left slotted hole and the right slotted hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711024822.3A CN107655369B (en) | 2017-10-27 | 2017-10-27 | I-shaped reinforced cut structure and cut method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711024822.3A CN107655369B (en) | 2017-10-27 | 2017-10-27 | I-shaped reinforced cut structure and cut method |
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| Publication Number | Publication Date |
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| CN107655369A CN107655369A (en) | 2018-02-02 |
| CN107655369B true CN107655369B (en) | 2020-01-07 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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 |
| CN106225613A (en) * | 2016-08-25 | 2016-12-14 | 中铁十局集团第三工程有限公司 | A kind of efficient segmentation method of ignition in tunnel excavating process |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2017
- 2017-10-27 CN CN201711024822.3A patent/CN107655369B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106225613A (en) * | 2016-08-25 | 2016-12-14 | 中铁十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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| CN107655369A (en) | 2018-02-02 |
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