CN104763460B - Leak out isolated material and the construction method of a kind of coal mine gob fire extinguishing - Google Patents
Leak out isolated material and the construction method of a kind of coal mine gob fire extinguishing Download PDFInfo
- Publication number
- CN104763460B CN104763460B CN201510094455.9A CN201510094455A CN104763460B CN 104763460 B CN104763460 B CN 104763460B CN 201510094455 A CN201510094455 A CN 201510094455A CN 104763460 B CN104763460 B CN 104763460B
- Authority
- CN
- China
- Prior art keywords
- isolated material
- fire extinguishing
- goaf
- coal
- leaks out
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/08—Rock dusting of mines; Depositing other protective substances
Abstract
Leaked out isolated material the invention discloses a kind of fire extinguishing of coal mine gob, the isolated material that leaks out of the fire extinguishing includes intermediate layer, the both sides mirror image in the intermediate layer is made up of provided with one layer of mining flexible support material layer, described intermediate layer skeleton and the coating being applied on the outside of skeleton.The present invention can reduce the fresh distinguished and admirable entrance goaf of working face, prevent the loose coal left from aoxidizing and cause the spontaneous fire disaster in goaf；By the way that the personnel operating area of working face is isolated with goaf, gushing out for goaf inside toxic and harmful gas, the life security of safeguard work personnel can be effectively prevented；It by the way that goaf is kept apart with working face, for high-temperature mine, can effectively prevent the high temperature hot gas in goaf from gushing out to working face, be that operating personnel creates good working environment；Inerting can be carried out to goaf for a long time, prevent spontaneous combustion of remaining coal.
Description
Technical field
The present invention relates to Coal Mining Technology field, and in particular to a kind of isolated material that leaks out of coal mine gob fire extinguishing
And construction method.
Background technology
Coal spontaneous combustion is a kind of objective phenomenon that nature is present, and has existed for millions of years, for example Datong Jurassic coal
Layer begins to spontaneous combustion most early in the Early Pleistocene in the Quaternary Period before that is, about 2,000,000 years away from the present.China, the U.S., India, Russia, Australia
The countries and regions such as big Leah, Indonesia, the Central Asia, coal spontaneous combustion fire generally existing, coal spontaneous combustion discharges substantial amounts of poisonous
Pernicious gas and plume, because the diffusion zone of restricted clearance fire gases is smaller and diffusion paths are concentrated, easily cause correlation
Personnel's poisoning, asphyxia, seriously threaten the life security of personnel, and cause huge resources loss and environmental pollution.
Rich coal resources in China, coal reserves accounts for global 13%, and coal production accounts for global 37%, consumption figure
Global 32% is accounted for, but coal in China freely burning fire is extremely serious.According to incompletely statistics, have in China's State owned coal mine
The dangerous mine of spontaneous fire accounts for 51.3%, and fire caused by spontaneous combustionof coal accounts for more than the 90% of mine fire sum.Coal
Spontaneous combustion discharges substantial amounts of toxic and harmful gas and plume, because the diffusion zone of restricted clearance fire gases is smaller and diffusion logical
Road is concentrated, and is easily caused related personnel's poisoning, asphyxia, is seriously threaten the life security of personnel.At the same time, coal spontaneous combustion fire
Accident is also to cause one of main inducing of gas explosion accident, especially because of coal spontaneous combustion closed area, the high roof fall in tunnel, broken
The particular location such as broken coal post and goaf, high temp fire point is more hidden, it is difficult to find, if slightly neglected, and just may cause watt
This (coal dust) explodes (burning), causes huge loss.
In addition, as coal mining is shifted to deep, many mines face Climatic regionalization this problem.When mining depth increases
Plus seeped water in ground temperature rise or special High-geotemperature, stratum temperature is higher, larger equipment capacity and during larger heat dissipation capacity,
Can raise environment temperature and humidity.The nature of coal seam hair run into the gradually increase of mining depth, ground temperature increase, deep mining
Fiery problem is increasing, and current coal production is on the rise with the influence of mine construction from now on.
Spontaneous combustion of coal must be provided simultaneously with three conditions, the i.e. three elements of spontaneous combustion：Coal will have spontaneous combustion tendency in itself
(possibility of spontaneous combustion)；There is the supply of oxygen (air), the heat that oxidation is produced can assemble (good accumulation of heat environment), and this three
Individual key element must exist simultaneously, and reach certain quantity, can just cause mine fire, lack any one key element, Mine Fire
Calamity is impossible to occur.Therefore, coal spontaneous combustion preventing and treating should be in terms of preventing the contact of coal oxygen, reduction coal from gently reducing oxygen concentration three
Set about, develop corresponding preventing and extinguishing fire technology means, coal spontaneous combustion Prevention Technique main at present is as shown in the table：
Coal spontaneous combustion Prevention Technique comparison of classification
Above preventing and extinguishing fire technology method achieves certain effect, but all there is certain defect or in applicable model
Place and there is limitation：Grouting, water filling leakage leachability it is big, easily there is " drawing ditch " phenomenon；Retardant is not easy to uniform spray
It is sprinkled upon on coal body, and corrosion can be caused to equipment；Inert gas injection is difficult to be retained in the region of injection easily with diffusion of leaking out；
Inert gas injection foam technology foam is easy to vanish, and liquid phase water can once be sent out and will fail；Pressure injection Roc is repaiied, Ma Lisan,
The leakage stopping technology workload such as high-water material is big, cost is high, and large area is decomposed discharged at high temperature using difficulty, and portion of material
Toxic and harmful gas.
The content of the invention
It is an object of the present invention to provide leak out isolated material and the construction method of a kind of coal mine gob fire extinguishing, it can be effective
The problem of in the presence of ground solution background technology.
A kind of fire extinguishing of coal mine gob leaks out isolated material, and the isolated material that leaks out of the fire extinguishing includes intermediate layer,
The both sides mirror image in the intermediate layer is provided with one layer of mining flexible support material layer, and described intermediate layer is by skeleton and is applied to skeleton
The coating in outside is constituted.
A kind of construction method of the isolated material that leaks out of coal mine gob fire extinguishing, comprises the following steps：
(1) isolated material that leaks out of above-mentioned fire extinguishing is rolled into tubular by first；
(2) will be rolled into the fire extinguishing of tubular leak out isolated material by capstan winch be fixed to support cantilever extension at, then
By operating hydraulic support front column, set cap is reduced, formed between set cap and face roof at intervals of L1
Space, then one end of the isolated material that leaks out of fire extinguishing is laid to set cap top, laying depth is L2, then by support
Back timber is reset to be engaged with face roof；
(3) the normal coal cutting in face is made after the isolated material whole hanging of leaking out of fire extinguishings is intact, afterwards by manual shaking tray pine
Open, by decontroling steel wire rope by the isolated material decentralization L3 that leaks out of the fire extinguishing of web-like, then move the processes such as hydraulic support；
(4) lays isolation material according to step (2) again after the isolated material that leaks out for being rolled into the fire extinguishing of tubular is finished
Material, former isolated material remaining part point and the wrong formula in edge of new paver are arranged, and new paver is located at former isolated material
Top, then successively carry out step (2), (3).
The isolated material that leaks out of described fire extinguishing is arranged in the hydraulic support top of the whole working face in underground, and laying is gone out
The position for stopping adopting line that the isolated material that leaks out of fire is advanced to working face always since being adopted end stops.
As a result of above technical scheme, the invention has the advantages that：The fresh wind of working face can be reduced
Stream enters goaf, prevents the loose coal left from aoxidizing and causes the spontaneous fire disaster in goaf；By by working face
Personnel operating area isolates with goaf, can effectively prevent gushing out for goaf inside toxic and harmful gas, safeguard work people
The life security of member；By the way that goaf is kept apart with working face, for high-temperature mine, the high temperature in goaf can be effectively prevented
Hot gas is gushed out to working face, is that operating personnel creates good working environment；By the ring that goaf is isolated into a closing
Border, injects the inert gases such as N2/CO2 and not easily runs off during the fire extinguishing of goaf, can carry out inerting to goaf for a long time, prevent
Spontaneous combustion of remaining coal；Laying supporting mesh is constructed simultaneously during being adopted with working face end, it is not necessary to independent working procedure, easy to implement, into
This is relatively low, it is easy to promote.
Brief description of the drawings
In order to illustrate more clearly of the present invention, embodiment is briefly described below in conjunction with accompanying drawing.
Fig. 1 is the arrangement schematic diagram of flexible support material layer in the present invention and spacer material layer；
Fig. 2 working faces initially lay isolated material schematic diagram；
Fig. 3 is that the support after working face laying isolated material promotes schematic diagram；
Fig. 4 is Fig. 2 partial enlarged drawing；
Fig. 5 is Fig. 3 partial enlarged drawing；
Wherein：
1- mining supports material layers；2- intermediate layers；3- goafs；4- face roofs；5- set caps；6- coal-winning machines；
7- fire extinguishings leak out isolated material；8- cantilever extensions；9- steel wire ropes；The manual shaking trays of 10-；With top plate after the decline of L1- cantilever extensions
Distance；L2- lays fire extinguishing and leaked out the depth of isolated material for the first time；Fire extinguishing leaks out isolation material when L3- hydraulic supports are moved
Expect the height put down.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, below will
With reference to the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
Embodiment 1
Referring to Fig. 1, a kind of fire extinguishing of coal mine gob is leaked out isolated material 7, and the isolated material 7 that leaks out of the fire extinguishing is wrapped
Containing intermediate layer 2, the both sides mirror image in the intermediate layer 2 is provided with one layer of mining flexible support material layer 1, and described intermediate layer 2 is by bone
Frame and the coating being applied on the outside of skeleton are constituted.
It is preferred that, described intermediate layer 2 is in terms of fire resistance：Oxygen index (OI) >=27.
It is preferred that, described intermediate layer 2 is in terms of antistatic property：Sheet resistance≤1 × 108Ω。
It is preferred that, described intermediate layer 2 is in terms of breaking strength：Through, broadwise >=1300/50N.
It is preferred that, described intermediate layer 2 is in terms of tear edge：Through, broadwise >=200N.
It is preferred that, described intermediate layer 2 is in terms of temperature tolerance：- 10 DEG C of low temperature is arrived between 230 DEG C of high temperature.
It is preferred that, described 200 meters of intermediate layer air leak rate of air curtain is≤4.0%.
It is preferred that, the described hectometer resistance of intermediate layer 2 is≤850NS2/m3。
It is preferred that, the described resistance to wind pressure value in intermediate layer 2 is >=10000Pa.
It is preferred that, described intermediate layer 2 is wear-resistant, it is resistance to it is folding, do not absorb water, anticorrosion, the life-span was up to 2~10 years.
It is preferred that, described intermediate layer 2 is easily repaired, and breakage is cleaned into airing, handled with glue.
Embodiment 2
The backgrounds of embodiment 2：Shandong ore deposit mining depth is -950 meters of levels, the 3# seam inclinations 3 now exploited~
13 ° (average 8.0 °), thickness 8.5m；42 DEG C of the original ground temperature of mine；Through measuring coal spontaneous combustion stage 46 days, belong to typical
The easy spontaneous combustion mine in deep-well High-geotemperature coal seam.2301N fully mechanized coal faces tendency length 270m, wide 5m；Mining height 3.7m, Sub-Level Caving
4.2m；Working face uses descentional ventilation mode, with air quantity 1800m3/ min, from working face end adopt linked network supporting to remove frame closing work
Make face needs 56 day time altogether, has exceeded the spontaneous combustion time of coal, if taking no action to, it is most likely that cause spontaneous combustion of coal thing
Therefore, and the air cooler that working face is arranged during removing frame do not work, the high temperature hot gas stream caused by leaking out inside goaf is poured into
Working face, or even toxic and harmful gas can be drifted out and, and the operating environment of personnel in the pit is very severe.
Referring to Fig. 2-5, mine is drawn from fiber-Kev makees framework material, PVC film as the isolation material of upper and lower surface coating
A kind of material, construction method of the isolated material that leaks out of coal mine gob fire extinguishing comprises the following steps：
(1) adopts early stage in working face into end, in the mining flexible support material layer 1 that intermediate layer 2 is folded in bilayer
Between, the protection of the upper lower leaf of the isolated material 7 that leaked out to fire extinguishing formation (prevent from racking or tear in follow-up work progress every
From material), then tubular is rolled into, work is ready, according to force piece number and the isolation depth in goaf 3, is prevented
The fire extinguishing specification of isolated material 7 of leaking out adds up to 18m × 270m.
(2) is in the advance of the face to away from stopping adopting at line 18m, and working face starts to lay fire extinguishing comprehensively and leaked out isolated material
7, first by the fire extinguishing of tubular leak out isolated material 7 by capstan winch be fixed to support cantilever extension 8 at, then by operating liquid
Support front column is pressed, set cap 5 is reduced, formed between set cap 5 and face roof 4 at intervals of L1=0.25m
Space, then leak out one end of isolated material 7 of fire extinguishing is laid to the top of set cap 5, laying depth is L2=1.5m, then
Set cap 5 is reset to and engaged with face roof 4.
(3) first leaks out fire extinguishing, and isolated material 7 is whole to hang the intact rear normal coal cutting of working face, will shake manually afterwards
Disk 10 unclamps, and transfers L3=1.2m by decontroling steel wire rope 9 by the isolated material 7 that leaks out of the fire extinguishing of web-like, then move
The processes such as hydraulic support.
(4) leaks out after isolated material 7 is finished in the fire extinguishing of tubular, and according to step, (2 lay isolated material, septum primum again
Arranged from material remaining part point and the wrong formula in edge of new paver, it is interior wrong flat away from for 0.3m, and new paver be located at it is former
The top of isolated material, then step (2), (3) are carried out successively.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that, it still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (2)
1. a kind of construction method of the isolated material that leaks out of coal mine gob fire extinguishing, comprises the following steps：
(1) isolated material that leaks out of fire extinguishing is rolled into tubular by first；
The isolated material that leaks out of the fire extinguishing includes intermediate layer, and the both sides mirror image in the intermediate layer is provided with one layer of mining flexible support
Material layer, described intermediate layer is made up of skeleton and the coating being applied on the outside of skeleton；
(2) will be rolled into the fire extinguishing of tubular leak out isolated material by capstan winch be fixed to support cantilever extension at, then pass through
Hydraulic support front column is operated, set cap is reduced, the sky at intervals of L1 is formed between set cap and face roof
Gap, then one end of the isolated material that leaks out of fire extinguishing is laid to set cap top, laying depth is L2, then by set cap
It is reset to and is engaged with face roof；
(3) make the normal coal cutting in face after the isolated material whole hanging of leaking out of fire extinguishings is intact, manual shaking tray is unclamped afterwards, led to
Cross and decontrol steel wire rope by the isolated material decentralization L3 that leaks out of the fire extinguishing of web-like, then move hydraulic support process；
(4) lays isolated material again after the isolated material that leaks out for being rolled into the fire extinguishing of tubular is finished according to step (2), former
Isolated material remaining part point and the wrong formula in edge of new paver are arranged, and new paver is located at the upper of former isolated material
Portion, then step (2), (3) are carried out successively.
2. a kind of construction method of the isolated material that leaks out of coal mine gob fire extinguishing according to claim 1, its feature
It is, the isolated material that leaks out of described fire extinguishing is arranged in the hydraulic support top of the whole working face in underground, the fire extinguishing of laying
Leak out isolated material since end adopt start be advanced to always working face stop adopt line position stopping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510094455.9A CN104763460B (en) | 2015-03-02 | 2015-03-02 | Leak out isolated material and the construction method of a kind of coal mine gob fire extinguishing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510094455.9A CN104763460B (en) | 2015-03-02 | 2015-03-02 | Leak out isolated material and the construction method of a kind of coal mine gob fire extinguishing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104763460A CN104763460A (en) | 2015-07-08 |
| CN104763460B true CN104763460B (en) | 2017-08-25 |
Family
ID=53645513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510094455.9A Expired - Fee Related CN104763460B (en) | 2015-03-02 | 2015-03-02 | Leak out isolated material and the construction method of a kind of coal mine gob fire extinguishing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104763460B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317455A (en) * | 2015-08-17 | 2016-02-10 | 綦江县科信煤矿安全技术服务有限公司 | Comprehensive mine fire preventing and extinguishing method |
| CN105971644B (en) * | 2016-05-11 | 2017-12-12 | 四川芙蓉集团实业有限责任公司 | Administer the quick metal anchors wall construction method that karst region mine total return air lane is leaked out |
| CN108129943A (en) * | 2017-12-18 | 2018-06-08 | 中国矿业大学 | A kind of the composite spraying material and framework and implementation of the filling of underground fast blockage |
| CN113550782B (en) * | 2021-08-20 | 2022-11-29 | 太原理工大学 | Gob-side entry retaining working face goaf gas and natural ignition composite disaster treatment method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5273344B1 (en) * | 1992-12-21 | 1995-05-30 | Volkwein Jon C. | Process for inerting a cool mining site. |
| CN101550799B (en) * | 2009-04-02 | 2012-07-04 | 王本淼 | Cast-in-situ fire-proof door and method for manufacturing same |
| CN103388485B (en) * | 2013-07-18 | 2015-10-28 | 北京工业大学 | A kind of coal mining spraying class fireproofing extinguishing materials and preparation method thereof |
| CN103806943B (en) * | 2013-12-13 | 2016-06-22 | 中国神华能源股份有限公司 | For monitoring the monitoring device and monitoring method leaked out coal seam goaf |
| CN103867224B (en) * | 2014-03-24 | 2016-08-31 | 山东科技大学 | A kind of colliery comprehensive coal face stops adopting the fire extinguishing system of period flood season |
| CN104047628A (en) * | 2014-07-08 | 2014-09-17 | 李继水 | Technology for preventing natural ignition and gas explosion of goaf coal seam by adopting isolation method |
-
2015
- 2015-03-02 CN CN201510094455.9A patent/CN104763460B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104763460A (en) | 2015-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104763460B (en) | Leak out isolated material and the construction method of a kind of coal mine gob fire extinguishing | |
| Lu et al. | Method for prevention and control of spontaneous combustion of coal seam and its application in mining field | |
| CN104514577B (en) | The method of coal seam large area spontaneous combustion in goaf is hidden in a kind of efficient improvement shallow embedding | |
| CN108678798B (en) | Method for preventing and controlling spontaneous combustion of residual coal in goaf during fully mechanized caving face withdrawal | |
| CN109236350B (en) | Fire disaster treatment method for large dip angle super-thick coal seam | |
| CN109578056B (en) | Treatment method for coal mine goaf | |
| CN103867224B (en) | A kind of colliery comprehensive coal face stops adopting the fire extinguishing system of period flood season | |
| Zhang et al. | Experimental investigation of foam spread and extinguishment of the large-scale methanol pool fire | |
| CN105134281B (en) | A kind of fire extinguishing method during multiaspect adjacent air space island face face digging for colliery | |
| CN112546487B (en) | Treatment process for fire zone of coal seam around coal mine collapse column | |
| CN112412532B (en) | Advanced prevention and control method for water damage of fault roof of working face | |
| WO2017013634A2 (en) | Terminating expansion of underground coal fires and protecting the environment | |
| CN1958096A (en) | Zonal asphyxiation fire extinguisher system for underground cavity | |
| CN104047628A (en) | Technology for preventing natural ignition and gas explosion of goaf coal seam by adopting isolation method | |
| CN208518558U (en) | A kind of steel fire proof door | |
| CN107939440B (en) | Fully-mechanized mining working equipment withdraws method | |
| CN103061809B (en) | A kind of mine adit fire separation device | |
| CN104481571A (en) | Mine coal ash grouting fire preventing and extinguishing method | |
| CN111119983B (en) | Gas spraying and burning treatment method in tunnel excavation process | |
| CN106499431A (en) | Adjacent nitrogen injection in goaf method of fire protection during gob side entry driving | |
| Bilgin et al. | Case studies leading to the management of tunnel fire risks during TBM drives in an old coalfield | |
| CN205586391U (en) | Multistage perpendicular wall fire protection system in tunnel | |
| CN111794750A (en) | Coal and oil shale combined mining safety withdrawal method | |
| CN203717026U (en) | Inert gas protection system for coalmine gob area | |
| RU2681677C1 (en) | Method of fire-fighting protection of open gases and a device for its implementation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170825 Termination date: 20180302 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |