CN207829889U - A kind of structure for administering three-soft seam - Google Patents
A kind of structure for administering three-soft seam Download PDFInfo
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- CN207829889U CN207829889U CN201721464643.7U CN201721464643U CN207829889U CN 207829889 U CN207829889 U CN 207829889U CN 201721464643 U CN201721464643 U CN 201721464643U CN 207829889 U CN207829889 U CN 207829889U
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- liquid nitrogen
- administering
- soft seam
- seat earth
- steel skeleton
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model discloses a kind of structures for administering three-soft seam, it includes seat earth（12）, in seat earth（12）On be equipped with a meter font steel skeleton（11）, seat earth（12）On be evenly arranged with liquid nitrogen filling drilling（13）；It solves the existing backwardness for administering three-soft seam technology and regulation effect is poor, man power and material puts into the problem of larger construction period length；On the other hand economic benefit is also taken into account, construction period is shortened, reduces drilling hole amount, aperture and material consumption, is developed skill using compatibility.
Description
Technical field
The utility model belongs to coal seam Treatment process more particularly to a kind of structure for administering three-soft seam.
Background technology
During coal production, three-soft seam exploitation is always a very difficult thing, especially in three-soft seam
Which type of production technique to be most difficult something using when working face designs.Because selected production technique is not only wanted
Meet exploitation needs, and to meet national corresponding safety code and relevant industries standard；And the regulation and standard of the latter
The link that considers first in the design of three-soft seam working face, using which type of a kind of technology, not only can guarantee safety but also
It is the thinking core that the utility model solves the problems, such as not interfere production.Currently, home and abroad colliery is in three-soft seam recovery process one
As using anchoring support technology, metallic framework support technology etc., these support technologies are to use metal material, material sheet mostly
The dead weight of body can bring many troubles to worker in mining process again very much, such as：The very heavy inconvenient faceman of steel skeleton
Construction, that is, influence construction period again in the presence of some security risks.The material used in these support technologies be mostly it is disposable,
It is a large amount of to use the financial burden that also increase coal mining enterprise.
Utility model content：
The technical problems to be solved in the utility model：A kind of structure for administering three-soft seam is provided, to solve the prior art
Three-soft seam recovery process using anchoring support technology, metallic framework support technology etc., these support technologies are to use mostly
The dead weight of metal material, material itself can bring many troubles, the very heavy not side of steel skeleton to worker in mining process again very much
Just the construction of faceman influences construction period and there are some security risks again.The material used in these support technologies
It is disposable mostly, a large amount of use can also increase the technical problems such as the financial burden of coal mining enterprise.
Technical solutions of the utility model：
A kind of structure for administering three-soft seam, it includes seat earth, and a meter font steel skeleton is equipped on seat earth,
Liquid nitrogen filling drilling is evenly arranged on seat earth.
The rice font steel skeleton is light steel skeleton.
Rice font steel skeleton upper berth is equipped with steel plate.
Liquid nitrogen filling drilling is connect with liquid nitrogen loading system.
The liquid nitrogen loading system includes fluid reservoir, and fluid reservoir is by pipeline and liquid nitrogen filling drilling connection, in fluid reservoir
Pipeline（9）On be disposed with level-one solenoid valve, gas-liquid phase separation mechanism, two-stage supercharging mechanism, two-stage electromagnetic valve, sealing dress
It sets and liquid nitrogen filling head；Sealing device is sleeved on liquid nitrogen filling head.
Pipeline innermost layer is aluminium film internal layer, and aluminium film inner layer outer surface is provided with steel wire floor, and steel wire floor is wrapped up by rubber layer.
A kind of administering method of the structure of improvement three-soft seam, is drilled with using drilling equipment by design requirement first
Liquid nitrogen filling drilling, then places rice font steel skeleton；After rice font steel skeleton is placed on seat earth, in rice font reinforcing bar
The steel plate of 10 millimeters thicks is laid with above frame as bed course；The pipeline of fluid injection nitrogen is put into liquid nitrogen filling drilling, closing liquid nitrogen adds
It is filled again to liquid nitrogen after note drilling and persistently injects liquefaction nitrogen in drilling, observation and measurement seat earth variation, until coal seam hair
Life terminates injection nitrogen after freezing.
The beneficial effects of the utility model：
The utility model is injected by nitrogen and is bored using the intensity of rice font light steel frame structure enhancing coal body compression face
Hole absorbs big calorimetric when gasifying as liquefied nitrogen, to freeze, and because nitrogen boiling point is very low, coal body can be made all
It encloses temperature and drops to very low, improve coal body and bear the ability of upper load；Its feature have easy construction, cost is less, effect is good
And loaded area range is big, the excellent novel improvement three-soft seam technology of bearing load ability, wherein mining liquid nitrogen pipeline uses
Novel steel mesh rubber+aluminum film compounded forms, and has stretching resistance, resistance to compression, anti-aging, impermeable, waterproof, fire-retardant, insulation, acidproof
The features such as alkali, long service life.On the one hand the utility model enhances holding for coal body by using the shape of M shape light steel skeleton
Power is carried, effectively uniformly passes on by upper load；The pressure resistance of three cherry coal body of another aspect liquid nitrogen freezing technological transformation
Degree is mainly using temperature difference between coal body and liquid nitrogen, and liquid nitrogen, which is filled in drilling, causes coal body to freeze rapidly, to improve coal body
Compression strength.It solves the existing backwardness for administering three-soft seam technology and regulation effect is poor, man power and material's input is larger, applies
Work problem long in time limit；On the other hand economic benefit is also taken into account, construction period is shortened, drilling hole amount, aperture and material is reduced and disappears
Consumption develops skill using compatibility.
Description of the drawings：
Fig. 1 the utility model structure diagrams；
Fig. 2 is the utility model liquid nitrogen loading system structural schematic diagram；
Fig. 3 is the utility model pipeline structure schematic diagram.
Specific implementation mode：
A kind of structure for administering three-soft seam, it includes seat earth 12, and a meter shaped steel is equipped on seat earth 12
Skeleton 11 is evenly arranged with liquid nitrogen filling drilling 13 on seat earth 12.
The rice font steel skeleton 11 is light steel skeleton.Rice font light steel skeleton is the structure for supporting upper load.
It is equipped with steel plate on rice font steel skeleton 11.Its purpose is exactly that upper support load is made uniformly to transmit downwards.
Liquid nitrogen filling drilling 13 is connect with liquid nitrogen loading system.
The pipeline of liquid nitrogen loading system is put into liquid nitrogen filling drilling 13, again to brill after first closing liquid nitrogen filling drilling 13
Persistently injection liquefaction nitrogen, observation and measurement seat earth change in hole, terminate injection nitrogen after coal seam is freezed.
The liquid nitrogen loading system includes fluid reservoir 1, and fluid reservoir 1 is connect with liquid nitrogen filling drilling 13 by pipeline 9, stored up
Level-one solenoid valve 2, gas-liquid phase separation mechanism 3, two-stage supercharging mechanism 4, two-stage electromagnetic valve are disposed on the pipeline 9 of flow container 1
5, sealing device 7 and liquid nitrogen filling head 6；Sealing device 7 is sleeved on liquid nitrogen filling head 6；Sealing device 7 is fixed on liquid nitrogen filling and bores
On hole 13, by 13 sealing of liquid nitrogen filling drilling, to prevent helium leak.
The effect of gas-liquid phase separation mechanism 3 be by nitrogen liquid and impurity and gas separate, avoid the liquid in nitrogen
Body or impurity corruption channel interior or blocking pipeline, improve the service life of pipeline.
Two-stage supercharging mechanism 4 use pressue device, it is therefore an objective to the pressure for increasing nitrogen, with improve filling nitrogen efficiency and
Improve coal seam freeze and resistance to compression.Nitrogen is injected under normal pressure, and nitrogen cannot go deep into liquid nitrogen filling drilling, and expand in drilling
It is scattered shallow, it is unfavorable for the compression strength that coal body freezes and improve coal body.
Sealing device 7, in order to prevent into drilling when fluid injection nitrogen, smooth base is damaged to the body of human body and is carried out
Safeguard measure；Sealing device 7 is made of materials such as rubber rings.
9 innermost layer of pipeline is aluminium film internal layer 22, and aluminium film inner layer outer surface is provided with steel wire floor 23, and steel wire floor 23 passes through rubber
Layer 21 wraps up.
Pipeline is formed using steel mesh rubber+aluminum film compounded, and aluminium film material thickness is at 1.2-1.5 millimeters.With stretching resistance, resist
The features such as pressure, anti-aging, impermeable, waterproof, fire-retardant, insulation, acid and alkali-resistance, long service life.In addition aluminium film plasticity itself and
The characteristics of toughness, can improve liquid nitrogen charging line service efficiency.
A kind of administering method of structure that administering three-soft seam, is drilled with liquid nitrogen by design requirement using drilling equipment first and adds
Note drilling, then places rice font steel skeleton；After rice font steel skeleton is placed on seat earth, above rice font steel skeleton
The steel plate of 10 millimeters thicks is laid with as bed course；The pipeline of fluid injection nitrogen is put into liquid nitrogen filling drilling, closing liquid nitrogen filling drilling
Liquefaction nitrogen is persistently injected into liquid nitrogen filling drilling again afterwards, seat earth variation is observed and measure, until coal seam is freezed
After terminate inject nitrogen.
Claims (6)
1. a kind of structure for administering three-soft seam, it includes seat earth（12）, it is characterised in that：In seat earth（12）Upper berth
Equipped with rice font steel skeleton（11）, seat earth（12）On be evenly arranged with liquid nitrogen filling drilling（13）.
2. a kind of structure for administering three-soft seam according to claim 1, it is characterised in that：Rice font steel skeleton（11）On
It is equipped with steel plate.
3. a kind of structure for administering three-soft seam according to claim 1, it is characterised in that：The rice font steel skeleton
（11）For light steel skeleton.
4. a kind of structure for administering three-soft seam according to claim 1, it is characterised in that：Liquid nitrogen filling drilling（13）With
Liquid nitrogen loading system connects.
5. a kind of structure for administering three-soft seam according to claim 4, it is characterised in that：The liquid nitrogen loading system packet
Include fluid reservoir（1）, fluid reservoir（1）Pass through pipeline（9）It fills and drills with liquid nitrogen（13）Connection, in fluid reservoir（1）Pipeline（9）On
It is disposed with level-one solenoid valve（2）, gas-liquid phase separation mechanism（3）, two-stage supercharging mechanism（4）, two-stage electromagnetic valve（5）, sealing
Device（7）With liquid nitrogen filling head（6）；Sealing device（7）It is sleeved on liquid nitrogen filling head（6）On.
6. a kind of structure for administering three-soft seam according to claim 5, it is characterised in that：Pipeline（9）Innermost layer is aluminium
Film inner layer（22）, aluminium film inner layer outer surface is provided with steel wire floor（23）, steel wire floor（23）It is wrapped up by rubber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721464643.7U CN207829889U (en) | 2017-11-06 | 2017-11-06 | A kind of structure for administering three-soft seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721464643.7U CN207829889U (en) | 2017-11-06 | 2017-11-06 | A kind of structure for administering three-soft seam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207829889U true CN207829889U (en) | 2018-09-07 |
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ID=63384528
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721464643.7U Active CN207829889U (en) | 2017-11-06 | 2017-11-06 | A kind of structure for administering three-soft seam |
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| Country | Link |
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| CN (1) | CN207829889U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605495A (en) * | 2017-11-06 | 2018-01-19 | 贵州大学 | A kind of structure and administering method for administering three-soft seam |
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2017
- 2017-11-06 CN CN201721464643.7U patent/CN207829889U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605495A (en) * | 2017-11-06 | 2018-01-19 | 贵州大学 | A kind of structure and administering method for administering three-soft seam |
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