CN209027381U - A kind of blasting system for rock roadway in coal mine blast working - Google Patents
A kind of blasting system for rock roadway in coal mine blast working Download PDFInfo
- Publication number
- CN209027381U CN209027381U CN201821782006.9U CN201821782006U CN209027381U CN 209027381 U CN209027381 U CN 209027381U CN 201821782006 U CN201821782006 U CN 201821782006U CN 209027381 U CN209027381 U CN 209027381U
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- roadway
- powder stick
- eye
- coal mine
- periphery
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Abstract
The utility model relates to coal mine tunnel initating field, specifically a kind of blasting system for rock roadway in coal mine blast working.Including the multiple cut shots being provided on roadway excavation section and the multiple periphery holes opened up along roadway excavation section rim, offer diameter hollow eye in the center of roadway excavation section, diameter hollow eye to open up inclination angle consistent with the roadway construction gradient；The bottom hole position of cut shot is filled with the first explosion powder stick, and the position between the eye mouth for being located at cut shot in cut shot and the first explosion powder stick is sealed equipped with loess stemming；The bottom hole position of periphery hole is filled with the second explosion powder stick, water cannon mudding is successively arranged by the eye mouth direction of the second explosion powder stick towards periphery hole in periphery hole and loess stemming seals, the water that water stemming material package includes cylindrical sealing shroud and is poured in secret set.The utility model can greatly improve the efficiency of stone drifting by improving the average drilling depth in development blasting construction.
Description
Technical field
It is specifically a kind of for the quick-fried of rock roadway in coal mine blast working the utility model relates to coal mine tunnel initating field
Broken system.
Background technique
Coal mining starts to exploit towards underground deeper inside in recent years, and must just face one towards the exploitation of underground deeper inside
Series new reality and technical problem, such as the subterranean depth stress of primary rock are larger, cause the clamping action of rock significantly greater, with
Also there are some new problems in driling explosion technology and theory of blasting simultaneously for this, how to realize the high efficient driving of rock gangway, always
It is that coal mine roadway tunnels faced main problem.
There are mainly two types of underground passage tunneling construction process is current: first is that using mechanized construction, this method automation
Degree is high, and operation safety is continuous, but since mechanical equipment volume is larger, can not flexibly put to good use in underground passage, and machinery is set
Standby price is high, cutter easy consumption, so that its adaptation range is limited；Another method is the method using perforating explosion, this method
Variation strong adaptability to geological conditions, China's stone drifting usually use perforating blasting.
Although blasting procedure in coal mine underground stone drifting using extremely wide, it is many due to the shortcoming of theoretical research
There is no enough theories to carry out guiding construction when coal mine and mine construction, causes drivage efficiency lower, routine in the prior art
Development blasting construction is primarily present that average drilling depth is low, and usually 1.2-1.4m, is not well positioned to meet coal mine roadway speedy drivage
Demand.
Utility model content
The utility model is intended to provide a kind of blasting system for rock roadway in coal mine blast working, by improving development blasting
Average drilling depth in construction greatly improves the efficiency of stone drifting.
In order to solve the above technical problems, the technical solution adopted in the utility model are as follows: one kind is used for rock roadway in coal mine explosion
The blasting system of construction is provided with multiple cut shots on roadway excavation section including uniform intervals and along roadway excavation section
Multiple periphery holes that edge interval opens up offer diameter hollow eye, major diameter in the center of roadway excavation section
Open up inclination angle, the depth 55-65m, diameter 150-155mm consistent with the roadway construction gradient of hollow eye；The hole of cut shot
Bottom position is filled with the first explosion powder stick, the position between the eye mouth for being located at cut shot in cut shot and the first explosion powder stick
Loess stemming envelope is installed；The bottom hole position of periphery hole is filled with the second explosion powder stick, by the second explosion in periphery hole
The eye mouth direction of powder stick towards periphery hole is successively arranged water cannon mudding and loess stemming envelope, and water stemming material package includes the close of cylinder
Big envelope and the water being poured in secret set.
Preferably, the length of water cannon mudding is that loess stemming seals 2.8-3 times of length in periphery hole.
Preferably, sealing shroud is made of vinyon, and the diameter of sealing shroud is corresponding with periphery hole.
Preferably, cut shot and periphery hole are each perpendicular to roadway excavation section and open up.
Preferably, the first explosion powder stick and the second explosion powder stick are three-level emulsion.
Beneficial effect
The utility model can effectively improve stone drifting efficiency.Diameter hollow eye opens up, and is on the one hand broken after explosion
Cutting for rock provides certain space；On the other hand, so that explosion after roadway excavation section on country rock generate it is bigger
Tensile stress then generates more scope of freedoms, convenient for further driving.Water cannon mudding is used in periphery hole, it will be previous quick-fried
Broken stress wave propagation conductor becomes aqueous medium from air dielectric, to reach the energy storage effect of Explosion stress wave, improves the benefit of explosive
With rate, while water stemming material explodes simultaneously when explosive charge, and water just forms misty distribution in air, can play depositing dust, cooling and
Absorb the effect of toxic and harmful gas.
From the point of view of drivage efficiency, the former every big gun Dan Jinwei 1-1.2m of stone drifting, drill footage per month maintains 60m or so, passes through this
For the every big gun list of utility model into improving to 2-2.4m, drill footage per month can be promoted to 80-100m.
From the point of view of economic benefit, the driving material cost of existing conventional techniques is 4357 yuan/m, 4.2 works/m.By this reality
With novel, manpower consumption has 4.2 works/m to be reduced to 2.6 works/m, 175 yuan of every work, and labour cost reduces by 280 yuan/m；
To sum up, the utility model can provide the sufficient time for working face protrusion-dispelling engineering, and working face is drawn a circle to approve in advance, to solution
Excavation replacement imbalance provides strong basis, and back production improved efficiency 30% is calculated by annual 3 working faces of delineation, can synergy 1426.9
Wan Yuan/year.
Detailed description of the invention
Fig. 1 is the distribution schematic diagram of diameter hollow eye, cut shot and periphery hole in the utility model；
Fig. 2 is the diagrammatic cross-section of periphery hole part in the utility model；
Fig. 3 is the diagrammatic cross-section of cut shot part in the utility model；
Marked in the figure: 1, roadway excavation section, 2, diameter hollow eye, 3, cut shot, 4, periphery hole, 5, loess big gun
Mudding, 6, water cannon mudding, the 7, first explosion powder stick, the 8, second explosion powder stick.
Specific embodiment
As shown in Figure 1, a kind of blasting system for rock roadway in coal mine blast working of the utility model, including uniform intervals
The multiple cut shots 3 being provided on roadway excavation section 1 and the multiple periphery big guns opened up along 1 edge interval of roadway excavation section
Eye 4.Cut shot 3 and periphery hole 4 in Fig. 1 only clearly identify its distributing position and use, and is actually used in, cut shot
3 and the distributing position of periphery hole 4 still use in routine techniques and open up mode.
Unlike routine techniques, the utility model offers in major diameter in the center of roadway excavation section 1
Empty eye 2.Major diameter refers to that its diameter much larger than cut shot 3 and periphery hole 4, has reached 150-155mm.It is hollow to refer to the hole
Middle part fills explosive.The main function of diameter hollow borehole is: on the one hand providing centainly for cutting for detritus after explosion
Space；On the other hand, it so that the country rock on roadway excavation section 1 after explosion generates bigger tensile stress, then generates more
More scope of freedom, convenient for further driving.
Diameter hollow eye 2 in the present embodiment favours the distribution of roadway excavation section 1, opens up inclination angle and roadway construction
The gradient is consistent, to achieve the purpose that increase the explosion scope of freedom during this circulation driving.The depth of diameter hollow eye 2 is 55-
65m, to achieve the purpose that persistently to play a role in development blasting.
As shown in figure 3, cut shot 3 is opened up perpendicular to roadway excavation section 1, it is identical as conventional blasting method driving technology, this
Utility model is filled with the first explosion powder stick 7 in the bottom hole position of cut shot 3, positioned at cut shot 3 in cut shot 3
Position between eye mouth and the first explosion powder stick 7 is equipped with Huang and crosses stemming envelope 5.
It is opened up as shown in Fig. 2, periphery hole 4 is also perpendicular to roadway excavation section 1, the bottom hole position of periphery hole 4 is filled out
Equipped with the second explosion powder stick 8.It is different from conventional blasting method driving technology, by the second explosion powder stick 8 towards periphery in periphery hole 4
The eye mouth direction of borehole 4 is successively arranged water cannon mudding 6 and Huang crosses stemming envelope 5, and water cannon mudding 6 includes cylindrical and uses polyethylene
The sealing shroud of plastic material production and the water being poured in secret set, the diameter of sealing shroud are corresponding with periphery hole 4.This implementation
In example, the total depth of periphery hole 4 is 20000m, and the length of the second explosion powder stick 8 therein is 220mm, the length of water cannon mudding 6
Degree is 1330mm, and the length of loess stemming is 450mm, in a preferred embodiment, the length of water cannon mudding 6 in periphery hole 4
Degree crosses 2.8-3 times that stemming seals 5 length for Huang.
The first explosion powder stick 7 and the second explosion powder stick 8 in the present embodiment in cut shot 3 and periphery hole 4 are all made of
The three-level emulsion of diameter 32mm.First explosion powder stick 7 and the second explosion powder stick 8 are ignited by electric cap, electric cap
Payment to a porter passes through cut shot 3 respectively and the eye mouth position of periphery hole 4 draws and is connected with detonation equipment.
Claims (5)
1. a kind of blasting system for rock roadway in coal mine blast working, including uniform intervals are provided on roadway excavation section (1)
Multiple cut shots (3) and multiple periphery holes (4) for being opened up along roadway excavation section (1) edge interval, it is characterised in that:
Offered diameter hollow eye (2) in the center of roadway excavation section (1), diameter hollow eye (2) open up inclination angle with
The roadway construction gradient is consistent, depth 55-65m, diameter 150-155mm；The bottom hole position of cut shot (3) is filled with first
It explodes powder stick (7), is set in the position in cut shot (3) between the eye mouth of cut shot (3) and the first explosion powder stick (7)
There is loess stemming to seal (5)；The bottom hole position of periphery hole (4) is filled with the second explosion powder stick (8), in the periphery hole (4) by
The eye mouth direction of second explosion powder stick (8) towards periphery hole (4) is successively arranged water cannon mudding (6) and loess stemming envelope (5), water
Stemming seals the water that (6) include cylindrical sealing shroud and are poured in secret set.
2. a kind of blasting system for rock roadway in coal mine blast working according to claim 1, it is characterised in that: periphery big gun
The length of water cannon mudding (6) is 2.8-3 times that loess stemming seals (5) length in eye (4).
3. a kind of blasting system for rock roadway in coal mine blast working according to claim 1, it is characterised in that: sealing shroud
It is made of vinyon, the diameter of sealing shroud is corresponding with periphery hole (4).
4. a kind of blasting system for rock roadway in coal mine blast working according to claim 1, it is characterised in that: slotting big gun
Eye (3) and periphery hole (4) are each perpendicular to roadway excavation section (1) and open up.
5. a kind of blasting system for rock roadway in coal mine blast working according to claim 1, it is characterised in that: first is quick-fried
Explosive cartridge (7) and the second explosion powder stick (8) are three-level emulsion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821782006.9U CN209027381U (en) | 2018-10-31 | 2018-10-31 | A kind of blasting system for rock roadway in coal mine blast working |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821782006.9U CN209027381U (en) | 2018-10-31 | 2018-10-31 | A kind of blasting system for rock roadway in coal mine blast working |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209027381U true CN209027381U (en) | 2019-06-25 |
Family
ID=66908778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821782006.9U Expired - Fee Related CN209027381U (en) | 2018-10-31 | 2018-10-31 | A kind of blasting system for rock roadway in coal mine blast working |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209027381U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457800A (en) * | 2020-04-14 | 2020-07-28 | 郑州信息科技职业学院 | Straight-eye barrel-shaped cutting hole arrangement structure and roadway straight-eye barrel-shaped cutting blasting method thereof |
| CN113188391A (en) * | 2021-06-10 | 2021-07-30 | 嵩县金牛有限责任公司 | Blasting method for soft rock roadway tunneling |
-
2018
- 2018-10-31 CN CN201821782006.9U patent/CN209027381U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457800A (en) * | 2020-04-14 | 2020-07-28 | 郑州信息科技职业学院 | Straight-eye barrel-shaped cutting hole arrangement structure and roadway straight-eye barrel-shaped cutting blasting method thereof |
| CN113188391A (en) * | 2021-06-10 | 2021-07-30 | 嵩县金牛有限责任公司 | Blasting method for soft rock roadway tunneling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190625 Termination date: 20191031 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |