CN104864782A - Hard stone drift composite reinforcing vertical wedge cutting method - Google Patents
Hard stone drift composite reinforcing vertical wedge cutting method Download PDFInfo
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- CN104864782A CN104864782A CN201510248420.6A CN201510248420A CN104864782A CN 104864782 A CN104864782 A CN 104864782A CN 201510248420 A CN201510248420 A CN 201510248420A CN 104864782 A CN104864782 A CN 104864782A
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- eyes
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- snubber
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- 238000005520 cutting process Methods 0.000 title abstract description 12
- 239000004575 stone Substances 0.000 title abstract description 6
- 239000002131 composite material Substances 0.000 title abstract 2
- 230000003014 reinforcing Effects 0.000 title abstract 2
- 238000005422 blasting Methods 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims description 25
- 239000011435 rock Substances 0.000 claims description 14
- 150000001875 compounds Chemical class 0.000 claims description 13
- 230000000977 initiatory Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 235000020004 porter Nutrition 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000002146 bilateral Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000005755 formation reaction Methods 0.000 claims description 3
- 230000005641 tunneling Effects 0.000 abstract description 3
- 238000005474 detonation Methods 0.000 abstract 4
- 238000005553 drilling Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 238000004880 explosion Methods 0.000 description 4
- 210000003128 Head Anatomy 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 229940105657 CATALASE Drugs 0.000 description 1
- 102000016938 EC 1.11.1.6 Human genes 0.000 description 1
- 108010053835 EC 1.11.1.6 Proteins 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Abstract
The invention discloses a hard stone drift composite reinforcing vertical wedge cutting method. Two center eyes are formed at a center point of a tunneling roadway center line groove cavity. Three pairs of main cutting eyes and two pairs of auxiliary cutting eyes are symmetrically formed in the two sides of the center eyes. The hole space distance between the center eyes is 400 mm. The vertical hole distance between two adjacent eye holes of the main cutting eyes is 400 mm. The horizontal angle is 70 degrees. The hole distance between two adjacent eye holes of the auxiliary cutting eyes is 400 mm. The horizontal angle is 83 degrees. The main cutting eyes are subjected to detonation through a section of a detonator. The auxiliary cutting eyes and the center eyes are subjected to detonation through two sections of detonators. Center eye blast hole diameter is 42 mm. Large cartridges with the diameter of 40 mm are used for normal charging. Main cutting eye and auxiliary cutting eye blasting hole diameter is 42 mm. Large cartridges with the diameter of 40 mm are used for reverse charging. Normal cartridges are used for forward charging for other blasting holes. At morning shift, a medium-deep hole is used for one-cycle detonation; at noon shift and night shift, two cycles are carried out; detonation depth at each cycle is 1.6-1.7 m.
Description
Technical field
The present invention relates to a kind of rock gangway V-cut method, particularly a kind of solid rock (solid coefficient f=10 ~ 12) tunnel compound strengthens vertical wedge cut method.
Background technology
Rational digging deployment is the basic guarantee of Safety of Coal Mine Production, high-yield and high-efficiency, and along with the generally use of fully-mechanized digging machine, coal roadway tunneling speed is increased dramatically, and stone drifting speed just becomes conspicuous contradiction.Drilling and blasting method is the main method that current stone head tunneling construction adopts, particularly for the stone head of solid coefficient f=10 ~ 12, very uneconomical according to fully-mechanized digging machine, and pick consumption wearing and tearing are large, and construction speed is unable to lift at all.From prior art and field practice, adopt hydraulic jumbo to carry out rock drilling and can improve perforating speed to a great extent, emphasis needs from raising blast hole utilization factor, improves the aspect such as laneway molding, Blasting Parameters Optimization and to conduct a research work.And the key of Blasting Parameters Optimization is cutting method, whether it adapts to, and directly decide the effect of tunnel blasting driving, after keyhole explosion, the vallecular cavity degree of depth determines the single cycle digging footage in tunnel substantially.Current V-cut application is comparatively extensive, and adopt a pair snubber for comparatively hard, that section is larger main haulage roadway or the large lane of return air, demolition effect is poor, single cycle drilling depth is low, blast hole utilization factor is not high, and explosives and detonators consumption is large, and the optimizing research for hard rock gangway cutting method is very urgent.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, provides a kind of and strengthens demolition effect, and solid rock (f=10 ~ 12) the tunnel compound improving blast hole utilization factor and tunnelling speed strengthens vertical wedge cut method.
Object of the present invention is achieved by the following technical programs: in digging laneway center line vallecular cavity mid point distance, base plate 800mm ~ 1200mm place is arranged vertically two central eye, three are arranged to main snubber and two to auxiliary snubber in central eye bilateral symmetry, form compound and strengthen vertical wedge cut, described central eye pitch of holes is 400mm, the eyelet degree of depth is 2.1m ~ 2.2m, upright opening distance between adjacent two eyelets of described main snubber is 400mm, the eyelet degree of depth is 2.13m ~ 2.23m, level angle 70 °, often pair of main slotting aperture distance is 1660mm, pitch-row between adjacent two eyelets of described auxiliary snubber is 400mm, the eyelet degree of depth is 2.03m ~ 2.13m, level angle is 83 °, often pair of auxiliary slotting aperture distance is 2160mm, main snubber adopts one section of blasting cap initiation, prevent channel effect, auxiliary snubber, central eye adopts two sections of blasting cap initiations, pressure eye, avalanche eye adopts three sections to detonate, two circle eyes adopt four sections to detonate, periphery hole, end eye adopts five sections to detonate.
The hard rock gangway compound of above-mentioned one strengthens vertical wedge cut method, it is characterized in that: central eye blasthole diameter is 42mm, normal charge in hole, powder charge employing diameter is the large powder stick of 40mm, impel bottom slotting and form through broken scope, be more conducive to the formation of vallecular cavity.
The hard rock gangway compound of above-mentioned one strengthens vertical wedge cut method, it is characterized in that: main snubber, auxiliary snubber blasthole diameter are 42mm, powder charge employing diameter is the large powder stick of 40mm, adopt inverse initiation, from inside to outside be followed successively by electric cap, large powder stick, water stemming material, stemming, payment to a porter extends to aperture at the bottom of hole, and all the other blashole charges adopt normal powder stick (diameter 32mm), adopts forward powder charge.
The hard rock gangway compound of above-mentioned one strengthens vertical wedge cut method, it is characterized in that: during driving face employing " three or eight " duty, mornig shift adopts medium-length hole blasting one circulation, middle night shift two circulation, often circulation length of shot 1.6 ~ 1.7m.
The present invention compared with prior art has the following advantages: its demolition effect of stone head for solid coefficient f=10 ~ 12 is better, effectively can ensure cut depth, improves blast hole utilization factor, improves single cycle drilling depth, improves tunnelling construction speed.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is layout drawing and the elevation of each eyelet in the present invention.
Fig. 2 is main snubber in the present invention, auxiliary snubber charge constitution schematic diagram.
Number in the figure: 1 central eye; 2 main snubbers; 3 auxiliary snubbers; 4-electric cap; 5-major diameter powder stick; 6-stemming; 7-water stemming material; 8-payment to a porter.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further illustrated, but therefore do not limit the present invention among described scope of embodiments.
Adopting the main haulage roadway driving face of hydraulic jumbo rock drilling, in center line in roadway vallecular cavity mid point distance, base plate 800mm ~ 1200mm place is arranged vertically two central eye 1, three are arranged to main snubber 2 and two to auxiliary snubber 3 in central eye 1 bilateral symmetry, form compound and strengthen vertical wedge cut, described central eye 1 pitch of holes is 400mm, the eyelet degree of depth is 2.1m ~ 2.2m, upright opening distance between adjacent two eyelets of described main snubber 2 is 400mm, the eyelet degree of depth is 2.13m ~ 2.23m, level angle 70 °, often pair of main snubber 2 aperture distance is 1660mm, pitch-row between adjacent two eyelets of described auxiliary snubber 3 is 400mm, the eyelet degree of depth is 2.03m ~ 2.13m, level angle is 83 °, often pair of auxiliary snubber 3 aperture distance is 2160mm, main snubber 2 adopts one section of blasting cap initiation, prevent channel effect, auxiliary snubber 3, central eye 1 adopts two sections of blasting cap initiations, pressure eye, avalanche eye adopts three sections to detonate, two circle eyes adopt four sections to detonate, periphery hole, end eye adopts five sections to detonate.
In the present embodiment, described central eye 1 blasthole diameter is 42mm, normal charge in hole, powder charge employing diameter is the large powder stick 5 of 40mm, impel bottom slotting and form through broken scope, more be conducive to the formation of vallecular cavity, the explosion of large powder stick 5 blasting ratio small medicine coil is adopted more to be conducive to slotting, during large powder stick 5 explosion, slotting bottom centre place's unit maximum effective stress and center, scope of freedom unit maximal rate are all than during small medicine coil explosion large 2 ~ 4 times, and directly cause catalase scope near large powder stick 5 keyhole to increase.
In the present embodiment, described main snubber 2, auxiliary snubber 3 blasthole diameter are 42mm, powder charge employing diameter is the large powder stick 5 of 40mm, adopt inverse initiation, from inside to outside be followed successively by electric cap 4, large powder stick 5, water stemming material 7, stemming 6, payment to a porter 8 extends to aperture at the bottom of hole, and all the other blashole charges adopt normal powder stick (diameter 32mm), adopts forward powder charge.
In the present embodiment, described driving face adopts " three or eight " duty, and mornig shift adopts medium-length hole blasting one circulation, and middle night shift two circulation, often circulation length of shot is 1.6 ~ 1.7m.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure change, all belong in the protection domain of technical solution of the present invention.
Claims (4)
1. a hard rock gangway compound strengthens vertical wedge cut method, it is characterized in that being arranged vertically two central eye (1) at center line in roadway vallecular cavity mid point distance base plate 800mm ~ 1200mm place, three are arranged to main snubber (2) and two to auxiliary snubber (3) in central eye (1) bilateral symmetry, form compound and strengthen vertical wedge cut, described central eye (1) pitch of holes is 400mm, the eyelet degree of depth is 2.1m ~ 2.2m, upright opening distance between adjacent two eyelets of described main snubber (2) is 400mm, the eyelet degree of depth is 2.13m ~ 2.23m, level angle 70 °, often pair of main snubber (2) aperture distance is 1660mm, pitch-row between adjacent two eyelets of described auxiliary snubber (3) is 400mm, the eyelet degree of depth is 2.03m ~ 2.13m, level angle is 83 °, often pair of auxiliary snubber (3) aperture distance is 2160mm, main snubber (2) adopts one section of blasting cap initiation, prevent channel effect, auxiliary snubber (3), central eye (1) adopts two sections of blasting cap initiations, pressure eye, avalanche eye adopts three sections to detonate, two circle eyes adopt four sections to detonate, periphery hole, end eye adopts five sections to detonate.
2. the hard rock gangway compound of one according to claim 1 strengthens vertical wedge cut method, it is characterized in that central eye (1) blasthole diameter is 42mm, normal charge in hole, powder charge employing diameter is the large powder stick (5) of 40mm, impel bottom slotting and form through broken scope, be more conducive to the formation of vallecular cavity.
3. the hard rock gangway compound of one according to claim 1 strengthens vertical wedge cut method, it is characterized in that main snubber (2), assist snubber (3) blasthole diameter to be 42mm, powder charge employing diameter is the large powder stick (5) of 40mm, adopt inverse initiation, from inside to outside be followed successively by electric cap (4), large powder stick (5), water stemming material (7), stemming (6), payment to a porter (8) extends to aperture at the bottom of hole, and all the other blashole charges adopt normal powder stick (diameter 32mm), adopts forward powder charge.
4. the hard rock gangway compound of one according to claim 1 strengthens vertical wedge cut method, when it is characterized in that driving face employing " three or eight " duty, mornig shift adopts medium-length hole blasting one circulation, middle night shift two circulation, often circulation length of shot 1.6 ~ 1.7m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510248420.6A CN104864782A (en) | 2015-05-16 | 2015-05-16 | Hard stone drift composite reinforcing vertical wedge cutting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510248420.6A CN104864782A (en) | 2015-05-16 | 2015-05-16 | Hard stone drift composite reinforcing vertical wedge cutting method |
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| CN104864782A true CN104864782A (en) | 2015-08-26 |
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| CN201510248420.6A Pending CN104864782A (en) | 2015-05-16 | 2015-05-16 | Hard stone drift composite reinforcing vertical wedge cutting method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333779A (en) * | 2015-09-24 | 2016-02-17 | 安徽理工大学 | Different-level millisecond underholing blasting technology for hard rock tunnel |
| CN107655369A (en) * | 2017-10-27 | 2018-02-02 | 成都大学 | A kind of I-shaped reinforcement slotting structure and cut shot method |
| CN107726933A (en) * | 2017-10-27 | 2018-02-23 | 成都大学 | A kind of middle font strengthens slotting structure and cut shot method |
| CN107883822A (en) * | 2017-10-27 | 2018-04-06 | 成都大学 | One kind strengthens slotting correction structure and cut shot method |
| CN108007285A (en) * | 2017-12-05 | 2018-05-08 | 中国矿业大学(北京) | A kind of stone head deep hole sublevel is segmented efficient Cut Blasting method |
| CN109539914A (en) * | 2018-12-18 | 2019-03-29 | 中国地质大学（武汉） | Super-large-section tunnel tunnels bottom and throws slag cutting method and its blasting method |
| CN109667581A (en) * | 2018-12-19 | 2019-04-23 | 山东东山新驿煤矿有限公司 | The thin base plate tunnel fast digging technique of hard coal seam |
| CN111238327A (en) * | 2020-02-28 | 2020-06-05 | 白银有色集团股份有限公司 | Method for drilling blast holes in hard rock and blasting by using blast holes |
| 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 |
| CN111256549A (en) * | 2020-03-06 | 2020-06-09 | 中国矿业大学(北京) | Rock drift deep hole multiple wedge straight hole internal segmentation differential cut blasting method |
| CN113188384A (en) * | 2021-04-20 | 2021-07-30 | 白银有色集团股份有限公司 | Cutting parameter optimization method based on rock hardness classification |
-
2015
- 2015-05-16 CN CN201510248420.6A patent/CN104864782A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333779A (en) * | 2015-09-24 | 2016-02-17 | 安徽理工大学 | Different-level millisecond underholing blasting technology for hard rock tunnel |
| CN107655369B (en) * | 2017-10-27 | 2020-01-07 | 成都大学 | I-shaped reinforced cut structure and cut method |
| CN107655369A (en) * | 2017-10-27 | 2018-02-02 | 成都大学 | A kind of I-shaped reinforcement slotting structure and cut shot method |
| CN107726933A (en) * | 2017-10-27 | 2018-02-23 | 成都大学 | A kind of middle font strengthens slotting structure and cut shot method |
| CN107883822A (en) * | 2017-10-27 | 2018-04-06 | 成都大学 | One kind strengthens slotting correction structure and cut shot method |
| CN107883822B (en) * | 2017-10-27 | 2019-12-03 | 成都大学 | A kind of reinforcement slotting correction structure and cut shot method |
| CN108007285A (en) * | 2017-12-05 | 2018-05-08 | 中国矿业大学(北京) | A kind of stone head deep hole sublevel is segmented efficient Cut Blasting method |
| CN109539914A (en) * | 2018-12-18 | 2019-03-29 | 中国地质大学（武汉） | Super-large-section tunnel tunnels bottom and throws slag cutting method and its blasting method |
| CN109667581A (en) * | 2018-12-19 | 2019-04-23 | 山东东山新驿煤矿有限公司 | The thin base plate tunnel fast digging technique of hard coal seam |
| CN111238327A (en) * | 2020-02-28 | 2020-06-05 | 白银有色集团股份有限公司 | Method for drilling blast holes in hard rock and blasting by using blast holes |
| 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 |
| CN111256549A (en) * | 2020-03-06 | 2020-06-09 | 中国矿业大学(北京) | Rock drift deep hole multiple wedge straight hole internal segmentation differential cut 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 |
| CN113188384A (en) * | 2021-04-20 | 2021-07-30 | 白银有色集团股份有限公司 | Cutting parameter optimization method based on rock hardness classification |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150826 |
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| WD01 | Invention patent application deemed withdrawn after publication |