CN101936690A - Duplex-type wedge-shaped cut and graded construction technology thereof - Google Patents
Duplex-type wedge-shaped cut and graded construction technology thereof Download PDFInfo
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- CN101936690A CN101936690A CN2010102662817A CN201010266281A CN101936690A CN 101936690 A CN101936690 A CN 101936690A CN 2010102662817 A CN2010102662817 A CN 2010102662817A CN 201010266281 A CN201010266281 A CN 201010266281A CN 101936690 A CN101936690 A CN 101936690A
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- snubber
- millisecond delay
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Abstract
The invention discloses a duplex-type wedge-shaped cut and a graded construction technology thereof, solving the problem that the explosion vibration of a cuthole is reduced, and the tunneling speed construction method needs to be given consideration when the shockproof ability of the surrounding buildings is poor in urban tunnel construction. The duplex-type wedge-shaped cut comprises a working face which is provided with a 1-10 sections of millisecond delay detonator cutholes, wherein, the first section of millisecond delay detonator cutholes (1) are arranged symmetrically to form a wedge-shaped cut; the third section of millisecond delay detonator cutholes (3) and the fourth section of millisecond delay detonator cutholes (4) form a second duplex-type wedge-shaped cut; the fifth section of millisecond delay detonator cutholes (5) and the sixth section of millisecond delay detonator cutholes (6) form a third duplex-type wedge-shaped cut; each cuthole of the seventh section of millisecond delay detonator cutholes (7) and each cuthole of the eighth section of millisecond delay detonator cutholes (8) form a fourth duplex-type wedge-shaped cut, thus ensuring the construction speed and greatly lowering the vibration of the cut part.
Description
Technical field
The present invention relates to a kind of compound V-cut of on tunnel civil engineering face, arranging, and relate to a kind of gradation the construction technology that explosion is carried out in compound V-cut is set on face.
Background technology
At present, in the Tunnel Blasting construction, slotting is the most important thing of dead face explosion, and the quality of slotting effect directly affects whole demolition effect.In blasting vibration control, the blasting vibration of snubber is far longer than driving eye and periphery hole.Therefore, we can say that blasting vibration control is exactly the blasting vibration of controlling snubber in fact.Cutting method commonly used now mainly contains burn cut, angled cut two big classes.Burn cut just is perpendicular to face, utilize some to be parallel to each other, the huge function that the little interior cartridge bag of one group of borehole of eye distance produces, make the catalase of slotting inside even become powdery, and form a cavity, for other rock mass avalanche a free face is provided, it needs more borehole number and more explosive to detonate simultaneously.Angled cut is exactly snubber and face out of plumb, and generally along tunnel axis symmetric arrangement, and the borehole of opposite tilt is formed.During the cartridge bag explosion, produce the component to the scope of freedom, the rock mass in the middle of making is abandoned away and is formed cavity, for the avalanche of other rock mass provides free face.The unreasonable science of the angled cut of prior art layout on face, do not play the effect that reduces concussion of blasting well, in the city underground constructing tunnel, when run into surrounding building, structures are more, during its antivibration ability, do not find the blasting vibration that promptly will reduce snubber, take into account the layout of snubber of demolition effect and driving speed and the construction method of snubber again.
Summary of the invention
The invention provides the compound V-cut construction technology of a kind of compound V-cut and gradation, solved the unreasonable science of angled cut layout on face of prior art, do not play the blasting vibration that promptly will reduce snubber, take into account the technical problem of demolition effect and driving speed again.
The present invention overcomes the above problems by following scheme:
A kind of compound V-cut, comprise face, the 1-10 section millisecond delay cap snubber that on face, is provided with, 1-10 section millisecond delay cap snubber on face be with the tunnel up and down median vertical line be that symmetry axis is corresponding symmetrically arranged, promptly, two groups of first section millisecond delay cap snubbers are symmetrical arranged, two groups of second section millisecond delay cap snubbers are symmetrical arranged, the 3rd section millisecond delay cap snubber and the 4th section millisecond delay cap snubber are symmetrical arranged, the 5th section millisecond delay cap snubber and the 6th section millisecond delay cap snubber are symmetrical arranged, the 7th section millisecond delay cap snubber and the 8th section millisecond delay cap snubber are symmetrical arranged, the 9th section millisecond delay cap snubber and the tenth section millisecond delay cap snubber are symmetrical arranged, on face, also be provided with left periphery hole, middle periphery hole and right periphery hole
The horizontal angle α in each snubber of first section millisecond delay cap snubber and the left and right sides, tunnel is 30 degree, symmetrically arranged first section left millisecond delay cap snubber and first section right millisecond delay cap snubber are that symmetry axis is formed V-cut with horizontal central line before and after the tunnel, the horizontal angle of each snubber of two groups of second section millisecond delay cap snubbers and the left and right sides, tunnel is 30 degree, about two groups of second section millisecond delay cap snubbers be that symmetry axis is formed V-cut with horizontal central line before and after the tunnel, first section millisecond delay cap snubber and second section millisecond delay cap snubber are formed first and are repeated the formula V-cut; The horizontal angle β in each snubber of each snubber of the 3rd section millisecond delay cap snubber and the 4th section millisecond delay cap snubber and the left and right sides, tunnel is 45 degree, the 3rd section millisecond delay cap snubber and the 4th section millisecond delay cap snubber are that symmetry axis is formed the second repetition formula V-cut with horizontal central line before and after the tunnel, the horizontal angle γ in each snubber of each snubber of the 5th section millisecond delay cap snubber and the 6th section millisecond delay cap snubber and the left and right sides, tunnel is 60 degree, the 5th section millisecond delay cap snubber and the 6th section millisecond delay cap snubber are that symmetry axis is formed triple compound V-cuts with horizontal central line before and after the tunnel, the horizontal angle δ in each snubber of each snubber of the 7th section millisecond delay cap snubber and the 8th section millisecond delay cap snubber and the left and right sides, tunnel is 75 degree, and the 7th section millisecond delay cap snubber and the 8th section millisecond delay cap snubber are that symmetry axis is formed the compound V-cut of quadruple with horizontal central line before and after the tunnel.
Described the 9th section millisecond delay cap snubber and the tenth section millisecond delay cap snubber are burn cut.
The compound V-cut construction technology of a kind of gradation may further comprise the steps:
The first step, punching is provided with left periphery hole, middle periphery hole and right periphery hole on face;
Second step, two groups of first section millisecond delay cap snubbers and two groups of second section millisecond delay cap snubbers are set to become 30 degree angles punchings with the left and right sides, tunnel horizontal line;
The 3rd step, the 3rd section millisecond delay cap snubber and the 4th section millisecond delay cap snubber are set to become miter angle punching with the left and right sides, tunnel horizontal line;
The 4th step, the 5th section millisecond delay cap snubber and the 6th section millisecond delay cap snubber are set to become 60 degree angles punchings with the left and right sides, tunnel horizontal line;
The 5th step, the 7th section millisecond delay cap snubber and the 8th section millisecond delay cap snubber are set to become 75 degree angles punchings with the left and right sides, tunnel horizontal line;
The 6th step, punching are provided with the 9th section millisecond delay cap snubber and the tenth section millisecond delay cap snubber;
The 7th the step, in millisecond delay cap snubber and periphery hole, implement explosion after the powder charge;
The 8th step, on new face, repeat the work progress in seven steps of the first step to the and the spacing of the double V-cut of facing is mutually dwindled.
The present invention adopts the compound V-cut technology of gradation, since first section rock mass of bearing fraction, divides the multistage explosion, progressively enlarges and forms vallecular cavity.Every section of Cut Blasting dosage is more much smaller than every section dosage of other borehole like this, secondly is that clamping action is smaller, and the energy majority that blast produces is used for throwing, rather than is used for fragmentation, and the vibration at slotting position is greatly reduced.
Description of drawings:
Fig. 1 is a structural representation of the present invention
Fig. 2 is that the A-A of Fig. 1 is to cutaway view
Specific embodiment:
A kind of compound V-cut, comprise face, the 1-10 section millisecond delay cap snubber that on face, is provided with, 1-10 section millisecond delay cap snubber on face be with the tunnel up and down median vertical line be that symmetry axis is corresponding symmetrically arranged, promptly, two groups of first section millisecond delay cap snubbers 1 are symmetrical arranged, two groups of second section millisecond delay cap snubbers 2 are symmetrical arranged, the 3rd section millisecond delay cap snubber 3 and the 4th section millisecond delay cap snubber 4 are symmetrical arranged, the 5th section millisecond delay cap snubber 5 and the 6th section millisecond delay cap snubber 6 are symmetrical arranged, the 7th section millisecond delay cap snubber 7 and the 8th section millisecond delay cap snubber 8 are symmetrical arranged, the 9th section millisecond delay cap snubber 9 and the tenth section millisecond delay cap snubber 10 are symmetrical arranged, on face, also be provided with left periphery hole 11, middle periphery hole 12 and right periphery hole 13
The horizontal angle α 14 in each snubber of first section millisecond delay cap snubber 1 and the left and right sides, tunnel is 30 degree, symmetrically arranged first section left millisecond delay cap snubber and first section right millisecond delay cap snubber are that symmetry axis is formed V-cut with horizontal central line before and after the tunnel, the horizontal angle of each snubber of two groups of second section millisecond delay cap snubbers 2 and the left and right sides, tunnel is 30 degree, about two groups of second section millisecond delay cap snubbers be that symmetry axis is formed V-cut with horizontal central line before and after the tunnel, first section millisecond delay cap snubber and second section millisecond delay cap snubber are formed first and are repeated the formula V-cut; The horizontal angle β 15 in each snubber of each snubber of the 3rd section millisecond delay cap snubber 3 and the 4th section millisecond delay cap snubber 4 and the left and right sides, tunnel is 45 degree, the 3rd section millisecond delay cap snubber 3 and the 4th section millisecond delay cap snubber 4 are that symmetry axis is formed the second repetition formula V-cut with horizontal central line before and after the tunnel, the horizontal angle γ 16 in each snubber of each snubber of the 5th section millisecond delay cap snubber 5 and the 6th section millisecond delay cap snubber 6 and the left and right sides, tunnel is 60 degree, the 5th section millisecond delay cap snubber 5 and the 6th section millisecond delay cap snubber 6 are that symmetry axis is formed triple compound V-cuts with horizontal central line before and after the tunnel, the horizontal angle δ 17 in each snubber of each snubber of the 7th section millisecond delay cap snubber 7 and the 8th section millisecond delay cap snubber 8 and the left and right sides, tunnel is 75 degree, and the 7th section millisecond delay cap snubber 7 and the 8th section millisecond delay cap snubber 8 are that symmetry axis is formed the compound V-cut of quadruple with horizontal central line before and after the tunnel.
Described the 9th section millisecond delay cap snubber 9 and the tenth section millisecond delay cap snubber 10 are burn cut.
The compound V-cut construction technology of a kind of gradation may further comprise the steps:
The first step, punching is provided with left periphery hole 11, middle periphery hole 12 and right periphery hole 13 on face;
Second step, two groups of first section millisecond delay cap snubbers 1 and two groups of second section millisecond delay cap snubbers 2 are set to become 30 degree angles punchings with the left and right sides, tunnel horizontal line;
The 3rd step, the 3rd section millisecond delay cap snubber 3 and the 4th section millisecond delay cap snubber 4 are set to become miter angle punching with the left and right sides, tunnel horizontal line;
The 4th step, the 5th section millisecond delay cap snubber 5 and the 6th section millisecond delay cap snubber 6 are set to become 60 degree angles punchings with the left and right sides, tunnel horizontal line;
The 5th step, the 7th section millisecond delay cap snubber 7 and the 8th section millisecond delay cap snubber 8 are set to become 75 degree angles punchings with the left and right sides, tunnel horizontal line;
The 6th step, punching are provided with the 9th section millisecond delay cap snubber 9 and the tenth section millisecond delay cap snubber 10;
The 7th the step, in millisecond delay cap snubber and periphery hole, implement explosion after the powder charge;
The 8th step, on new face, repeat the work progress in seven steps of the first step to the and the double V-cut of facing is mutually dwindled as the spacing of first section millisecond delay cap snubber 1 and the 3rd section millisecond delay cap snubber 3.
Claims (3)
1. compound V-cut, comprise face, the 1-10 section millisecond delay cap snubber that on face, is provided with, 1-10 section millisecond delay cap snubber on face be with the tunnel up and down median vertical line be that symmetry axis is corresponding symmetrically arranged, promptly, two groups first section millisecond delay cap snubber (1) is symmetrical arranged, two groups second section millisecond delay cap snubber (2) is symmetrical arranged, the 3rd section millisecond delay cap snubber (3) is symmetrical arranged with the 4th section millisecond delay cap snubber (4), the 5th section millisecond delay cap snubber (5) is symmetrical arranged with the 6th section millisecond delay cap snubber (6), the 7th section millisecond delay cap snubber (7) is symmetrical arranged with the 8th section millisecond delay cap snubber (8), the 9th section millisecond delay cap snubber (9) is symmetrical arranged with the tenth section millisecond delay cap snubber (10), on face, also be provided with left periphery hole (11), middle periphery hole (12) and right periphery hole (13), it is characterized in that, the horizontal angle α in each snubber of first section millisecond delay cap snubber (1) and the left and right sides, tunnel (14) is 30 degree, symmetrically arranged first section left millisecond delay cap snubber and first section right millisecond delay cap snubber are that symmetry axis is formed V-cut with horizontal central line before and after the tunnel, the horizontal angle of each snubber of two groups second section millisecond delay cap snubber (2) and the left and right sides, tunnel is 30 degree, about two groups of second section millisecond delay cap snubbers be that symmetry axis is formed V-cut with horizontal central line before and after the tunnel, first section millisecond delay cap snubber and second section millisecond delay cap snubber are formed first and are repeated the formula V-cut; The horizontal angle β in each snubber of each snubber of the 3rd section millisecond delay cap snubber (3) and the 4th section millisecond delay cap snubber (4) and the left and right sides, tunnel (15) is 45 degree, the 3rd section millisecond delay cap snubber (3) is that symmetry axis is formed the second repetition formula V-cut with the 4th section millisecond delay cap snubber (4) with horizontal central line before and after the tunnel, the horizontal angle γ in each snubber of each snubber of the 5th section millisecond delay cap snubber (5) and the 6th section millisecond delay cap snubber (6) and the left and right sides, tunnel (16) is 60 degree, the 5th section millisecond delay cap snubber (5) is that symmetry axis is formed triple compound V-cuts with the 6th section millisecond delay cap snubber (6) with horizontal central line before and after the tunnel, the horizontal angle δ in each snubber of each snubber of the 7th section millisecond delay cap snubber (7) and the 8th section millisecond delay cap snubber (8) and the left and right sides, tunnel (17) is 75 degree, and the 7th section millisecond delay cap snubber (7) is that symmetry axis is formed the compound V-cut of quadruple with the 8th section millisecond delay cap snubber (8) with horizontal central line before and after the tunnel.
2. a kind of compound V-cut according to claim 1 is characterized in that, described the 9th section millisecond delay cap snubber (9) and the tenth section millisecond delay cap snubber (10) are burn cut.
3. compound V-cut construction technology of gradation may further comprise the steps:
The first step, punching is provided with left periphery hole (11), middle periphery hole (12) and right periphery hole (13) on face;
Second step, two groups first section millisecond delay cap snubber (1) and two groups second section millisecond delay cap snubber (2) are set to become 30 degree angles punchings with the left and right sides, tunnel horizontal line;
The 3rd step, the 3rd section millisecond delay cap snubber (3) and the 4th section millisecond delay cap snubber (4) are set to become miter angle punching with the left and right sides, tunnel horizontal line;
The 4th step, the 5th section millisecond delay cap snubber (5) and the 6th section millisecond delay cap snubber (6) are set to become 60 degree angles punchings with the left and right sides, tunnel horizontal line;
The 5th step, the 7th section millisecond delay cap snubber (7) and the 8th section millisecond delay cap snubber (8) are set to become 75 degree angles punchings with the left and right sides, tunnel horizontal line;
The 6th step, punching are provided with the 9th section millisecond delay cap snubber (9) and the tenth section millisecond delay cap snubber (10);
The 7th the step, in millisecond delay cap snubber and periphery hole, implement explosion after the powder charge;
The 8th step, on new face, repeat the work progress in seven steps of the first step to the and the spacing of the double V-cut of facing is mutually dwindled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102662817A CN101936690A (en) | 2010-08-30 | 2010-08-30 | Duplex-type wedge-shaped cut and graded construction technology thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102662817A CN101936690A (en) | 2010-08-30 | 2010-08-30 | Duplex-type wedge-shaped cut and graded construction technology thereof |
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Cited By (8)
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|---|---|---|---|---|
| CN102401616A (en) * | 2011-10-11 | 2012-04-04 | 中国矿业大学(北京) | Blasting excavation method of vertical shaft |
| CN103075933A (en) * | 2012-06-06 | 2013-05-01 | 中铁十一局集团有限公司 | Large-wedge-shaped multi-repeated cutting groove construction process |
| WO2014026603A1 (en) * | 2012-08-17 | 2014-02-20 | 北京北方邦杰科技发展有限公司 | Application method of digital electronic detonator |
| 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 |
| CN104482816A (en) * | 2014-12-03 | 2015-04-01 | 中国矿业大学(北京) | Gradient pre-splitting blasting method and device of lancing cartridges around vertical shaft |
| CN105043176A (en) * | 2015-07-08 | 2015-11-11 | 中交路桥南方工程有限公司 | Multi-level small-wedge-shaped cuthole blasting vibration reduction method |
| CN106091848A (en) * | 2016-06-22 | 2016-11-09 | 四川路桥华东建设有限责任公司 | A kind of realize overlength, high inclination-angle tunnel anchorage tops bar the method for explosion |
| CN111238322A (en) * | 2020-03-06 | 2020-06-05 | 中国矿业大学(北京) | Rock roadway deep-hole multiple-wedge straight cut energy-gathering smooth blasting method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401616A (en) * | 2011-10-11 | 2012-04-04 | 中国矿业大学(北京) | Blasting excavation method of vertical shaft |
| CN103075933A (en) * | 2012-06-06 | 2013-05-01 | 中铁十一局集团有限公司 | Large-wedge-shaped multi-repeated cutting groove construction process |
| CN103075933B (en) * | 2012-06-06 | 2015-03-11 | 中铁十一局集团有限公司 | Large-wedge-shaped multi-repeated cutting groove construction process |
| WO2014026603A1 (en) * | 2012-08-17 | 2014-02-20 | 北京北方邦杰科技发展有限公司 | Application method of digital electronic detonator |
| 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 |
| CN104482816A (en) * | 2014-12-03 | 2015-04-01 | 中国矿业大学(北京) | Gradient pre-splitting blasting method and device of lancing cartridges around vertical shaft |
| CN105043176A (en) * | 2015-07-08 | 2015-11-11 | 中交路桥南方工程有限公司 | Multi-level small-wedge-shaped cuthole blasting vibration reduction method |
| CN106091848A (en) * | 2016-06-22 | 2016-11-09 | 四川路桥华东建设有限责任公司 | A kind of realize overlength, high inclination-angle tunnel anchorage tops bar the method for explosion |
| CN111238322A (en) * | 2020-03-06 | 2020-06-05 | 中国矿业大学(北京) | Rock roadway deep-hole multiple-wedge straight cut energy-gathering smooth blasting method |
| CN111238322B (en) * | 2020-03-06 | 2021-03-05 | 中国矿业大学(北京) | Rock roadway deep-hole multiple-wedge straight cut energy-gathering smooth blasting method |
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Application publication date: 20110105 |