CN105971644B - Administer the quick metal anchors wall construction method that karst region mine total return air lane is leaked out - Google Patents
Administer the quick metal anchors wall construction method that karst region mine total return air lane is leaked out Download PDFInfo
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- CN105971644B CN105971644B CN201610309814.2A CN201610309814A CN105971644B CN 105971644 B CN105971644 B CN 105971644B CN 201610309814 A CN201610309814 A CN 201610309814A CN 105971644 B CN105971644 B CN 105971644B
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- anchor pole
- side plate
- cover plate
- metal anchors
- return air
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/021—Grouting with inorganic components, e.g. cement
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
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Abstract
The invention discloses a kind of quick metal anchors wall construction method administered karst region mine total return air lane and leaked out, including surveying data of leaking out, bottom has been tunneled by designed elevation and has been flattened, unload cash point in shipment spoil to ground, drill bit beats anchor pole connection eye, Allianz processed connects anchor pole, system peace metal anchors wall side plate and anchor pole connection, couple adjacent side plates using flange, set up operating platform, system peace metal anchors wall cover plate and anchor pole connection, couple adjacent cover plate, side plate using flange, pour bottom board concrete, clear up tunnel scum silica frost, actual measurement checks that closure is leaked out data.Construction technology simple and fast of the present invention, there is good effect and economic benefit in the air-leakage control of karst region mine total return air lane, there is replicability in other tunnels, the mining area of same type, to forming sound ventilation environment, lifting mine safety production is horizontal to have active and effective facilitation.
Description
Technical field
The invention belongs to construction work field, more particularly to a kind of improvement karst region mine total return air lane leak out it is quick
Metal anchors wall construction method.
Background technology
Colliery main return airway is leaked out, and serious threat is caused to safety in production：
1) cause largely to be reduced with wind point effective wind rate, down-hole region is likely to form the poisonous and harmful gas such as gas
The accumulation of body, also Work places can be made bad climate condition occur.
2) ventilating system is complicated, influences mine ventilation stability and reliability, increase air quantity regulation is difficult.
3) Residual coal in goaf may be made to cause spontaneous fire.
4) a large amount of leak out will reduce ventilation efficiency, increase the power consumption cost of mine ventilation.
The content of the invention
The quick metal anchors wall to be leaked out it is an object of the invention to provide a kind of improvement karst region mine total return air lane is applied
Work method, it is intended to effectively administer colliery main return airway Air Leakage, reduce energy consumption, improve mine essenceization safe coefficient.
The present invention is achieved in that a kind of quick metal anchors wall construction administered and leaked out in karst region mine total return air lane
Method is leaked out number including actual measurement, has been tunneled bottom by designed elevation and has been flattened, and cash point is unloaded on shipment spoil to ground, and drill bit is beaten anchor pole and joined
Eye is connect, Allianz processed connects anchor pole, system peace metal anchors wall side plate and anchor pole connection, couples adjacent side plates using flange, it is flat to set up operation
Platform, system peace metal anchors wall cover plate and anchor pole connection, couple adjacent cover plate, side plate using flange, pour bottom board concrete, and cleaning tunnel is floated
Slag, actual measurement check that closure is leaked out data.
Further, the quick metal anchors wall construction method to leak out in karst region mine total return air lane of administering specifically wraps
Include：
Step 1: roadway floor is played into bottom from inside to outside, and ship cash slag and unload cash point to ground is specified；
Step 2: drill bit beats anchor pole connection eye, by rectangular arrangement；
Step 3: system peace anchor pole, connection anchor pole are consolidated with high grade mortar；
Step 4: system peace metal anchors wall side plate, during installation alignment installed in wall connection anchor pole and mark perforate
Symbol, then side plate is transported outside tunnel, perforate is carried out to institute reference symbol number, after the completion of perforate, then transport side plate back original position, will
Anchor pole passes through side plate hole, and after side plate installation is in place, upper plain cushion, the eyelet of plain cushion is more than bolt diameter, then upper cap nut and tightens,
Side plate is corrected, adjacent side plates flange couples and consolidated, longer anchor pole is sliced off；
Step 5: set up operating platform；
Step 6: system peace metal anchors wall cover plate, tunnel is arranged on using after fork truck lifting in place by cover plate correction alignment
The connection anchor pole of wall simultaneously marks perforate symbol, then transports cover plate outside tunnel, and perforate is carried out to institute's reference symbol number, and perforate is completed
Afterwards, then by cover plate transport original position back, continue to jack cover plate, anchor pole is passed through cover plate, upper plain cushion and nut simultaneously screw, adjacent cover
Plate, the connection of side plate flange；
Step 7: encryption connection anchor pole；
Step 8: prearrangement of deformation amount space, with lapicide Jiang Qiang, arch country rock tick slot, fills packing, packing will exceed lane in groove
Road country rock most salient point 2cm, when installing cover plate, side plate, packing is tightly forced extrude plain；
Step 9: slag is built in cleaning tunnel, actual measurement checks that closure is leaked out situation.
Construction technology simple and fast of the present invention, required equipment and material requirements be not high, low to worker's technical requirements, in karst
There is good effect and economic benefit in the air-leakage control of region mine total return air lane, have in other tunnels of same type, mining area
There is replicability, application prospect is extensive, is administered for all kinds of tunnel Anti-air-leakages and provides the technical measures referred to, good to being formed
Ventilated environment, lifting mine safety production is horizontal to have active and effective facilitation.
Brief description of the drawings
Fig. 1 is the quick metal anchors wall construction that improvement karst region mine total return air lane provided in an embodiment of the present invention is leaked out
Method flow diagram.
Embodiment
In order to further understand the content, features and effects of the present invention, hereby enumerating following examples, and coordinate accompanying drawing
Describe in detail as follows.
The prosperous coal industry of lotus company of Chuan Mei groups prestige, positioned at national high-quality anthracite base --- Gu chats coalfield Xuyong County shake east
Lin Bao villages of township are domestic, belong to provincial State owned coal mine.Big railway is chatted away from 321 national highway 2km, the Guizhou Province expressway access 4km that receives in mining area
Eastern railway station (building) is shaken from mining area border by the way that traffic is very convenient.Mine gross reserves is 33,070,000 tons, has delimited field with "nine squares" model
Enclose 3.57 square kilometres.The 9800000 tons of+850m level above raw coal reserves delimited at present, minable coal seam be respectively C19, C20,
Tri- layers of C24, wherein C19, C20 are low ash, low-sulfur, golf calorific value high-quality anthracite.Mine is opened up using main adit, design production
210,000 tons/year of ability, 300,000 tons/year of construction scale.The people of company existing staff 550, all kinds of professional and technical personnel 31；Wherein,
Possess the advanced people of professional title 1, intermediate 8 people, primary 22 people.Company organization perfects, and divides into 7 machine-operated departments and 7 are adopted
Pick auxiliary team.Mine possesses the equipment facility such as the coal production of modernization, transport, screening, quality testing, adopts, digs mechanization journey
Degree reaches more than 70%.
Mining area is in the molten low-lying area in the west of Guizhou Province-mound peak mountain plateau of the Yang Zi paraplatform Proterozoic Era~Mesozoic Era carbonate rock series karst region
Subprovince connects edge.Karsts developing area is very abundant, can be divided into early, middle and late three periods by developmental stage：Early stage, karsts developing area was in absolute altitude
More than 1400m watershed area, based on the vertical karst such as vertical shaft, dry doline；Mid-term karsts developing area absolute altitude 800~
1000m, further develop on the basis of early stage karst, karsts developing area is in various forms, has vertical circulation tape thickness, diving locating depth
The characteristics of, late period karst is distributed in 310~600m of absolute altitude river valley area, and the solution cavity and underground river for being mainly shown as step development go out
Mouth, it is the major source in the Major excretion area, as earth's surface river of underground water.Particularly karst has solution cavity, doline, fallen
The karst landscapes such as water hole, corrosion low-lying area pond, honeybee clump spread all over the place, are not of uniform size.According to area's geological survey memoir, 850m marks are distributed in
117 more than high, account for 75%, 38 below, account for 25%, with dry solution cavity, dry doline, based on sinkhole, cranny development degree with
Buried depth increases and weakened.
The prosperous colliery main return airway (footrill) of prestige is arranged in Permian Period maokou limestone, the stratum karsts developing area, and the elevation of well+
1100m, well head is using the inner gallery gradient as 3 ‰, total return air footrill well head 320.5m sections karst, cranny development inwards, through karst
Funnel, solution cavity etc. have as many as 9.The maximum Funnel diameter that data this section provided according to geology department runs into has that 13m is wide, minimum straight
Footpath has that 3m is wide, and is communicated with drop water drenching, indivedual funnels with earth's surface.During mine ventilating shaft fan operation, negative pressure is formed in the section, is led
Cause is seriously leaked out, maximum inleakage about 1100m3/ min, is shown in Table 1.
Main return airway is leaked out, and serious threat is caused to safety in production：
1) cause largely to be reduced with wind point effective wind rate, down-hole region is likely to form the poisonous and harmful gas such as gas
The accumulation of body, also Work places can be made bad climate condition occur.
2) ventilating system is complicated, influences mine ventilation stability and reliability, increase air quantity regulation is difficult.
3) Residual coal in goaf may be made to cause spontaneous fire.
4) a large amount of leak out will reduce ventilation efficiency, increase the power consumption cost of mine ventilation.
Just because of main return airway leaks out, the safety in production to mine brings great potential safety hazard, 2014
The mine is classified as supervisor's project by Work Safety Supervision Bureau of Sichuan Province.
Data test before the main return airway air-leakage control of table 1
A kind of quick metal anchors wall construction method administered karst region mine total return air lane and leaked out, by mono- point reality of 20m
Leak hunting wind number, has tunneled bottom by designed elevation and has flattened, and cash point is unloaded on shipment spoil to ground,Drill bit beats anchor pole connection eye,
Allianz processed connects anchor pole, system peace metal anchors wall side plate and anchor pole connection, couples adjacent side plates using flange, sets up operating platform (peace
Fill metal anchors wall cover plate use), system peace metal anchors wall cover plate and anchor pole connection, couple adjacent cover plate, side plate using flange, pour bottom
Plate concrete, tunnel scum silica frost is cleared up, actual measurement checks that closure is leaked out data (such as reaching requirement), final acceptance of construction.As shown in figure 1, specific bag
Include：
S101, cleaning, layout, roadway floor is played into bottom 350mm from inside to outside, and ship cash slag and unload cash to ground is specified
Point；
S102、Drill bit beats anchor pole connection eye, and an array pitch 750 × 750, by rectangular arrangement, anchor pole connection eye depth is
1000mm；
S103, system peace anchor pole, connection anchor pole are consolidated with high grade mortar, and anchor pole usesRound steel makes, long
1100mm, by one end work(silk 100mm, plain cushion is made using 5mm steel plates, specification 60 × 60；
S104, system peace metal anchors wall side plate, side plate use 5mm steel plate Q235A, and side plate physical dimension scene is measured accurately
Afterwards, in ground cutting making, installation side plate, alignment has been arranged on the connection anchor pole of wall and has marked perforate symbol, then will
Side plate is transported outside tunnel, and perforate is carried out to institute's reference symbol number, then transports side plate back original position, and anchor pole is passed through into side plate hole, side plate peace
After dress is in place, upper plain cushion, the eyelet of plain cushion be slightly larger than bolt diameter, then upper cap nut and tightly, correction side plate, adjacent side plates use
Flange couples and consolidated, and longer anchor pole is sliced off；
S105, operating platform is set up, specification 2500 × 1500 × 1500, made by oneself with flat car, with self-control hand fork lifter pair
Cover plate is lifted；
S106, system peace metal anchors wall cover plate, cover plate uses 5mm steel plate Q235A, and on ground, plate roller is by arc machining system
It is made semicircle arch form；Opened using cover plate correction alignment has been arranged on the connection anchor pole of wall and marked after fork truck lifting in place
Hole symbol, then transports cover plate outside tunnel, and perforate is carried out to institute reference symbol number, after the completion of perforate, then transports cover plate back original position,
Continue to jack cover plate, anchor pole is passed through cover plate, upper plain cushion and nut simultaneously screw, adjacent cover plate, the connection of side plate flange；
S107, encryption installation, because the steel plate that cover plate, side plate use is relatively thin, steel plate may be made to produce vibration because of negative pressure, increased
Add noise, influence distinguished and admirable quality, reduce return air effect, such case such as occur, encryption connection anchor pole is handled；
S108, prearrangement of deformation amount space, consider cover plate, the coefficient of dilatation of side plate, propose two expansion joints, expansion joint and both ends
Closure is leaked out, and is filled with packing, and the practice is as follows：With lapicide Jiang Qiang, arch country rock tick slot, specification 100 × 50, filled in groove
Packing, packing will exceed roadway surrounding rock most salient point 2cm, when installing cover plate, side plate, it is tightly forced extrude it is plain, with
Reach the closure at end and expansion joint to leak out, packing has the characteristics of corrosion-resistant, compressible, nontoxic；
S109, housekeeping, bottom plate C30 concretes are poured, slag is built in cleaning tunnel, checks that closure is leaked out by mono- point actual measurement of 20m
Situation, such as reach requirement, apply for final acceptance of construction.
The application effect of the present invention is explained in detail with reference to specific embodiment.
The prosperous ore deposit main return airway air-leakage control scheme of prestige is formulated, and is given an written reply on March 24th, 2015 by lotus company, April
Admission on the 24th starts to construct, and experiment 30m sections were completed May 22, were checked and accepted by lotus company June 2.Remaining section June 19
Recovery construction, August are completed, constructed 320 meters altogether comprehensively on the 9th, and August passes through examination, 79 days engineering construction durations on 25th.Constructor
Member's tissue：The people's material processing of ground 8 prepares (containing transport) one-shift operation, the people of underground 7 construction one-shift operation.
Main fan operation blade angle is+6 ° before air-leakage control, total intake 4264m3/ min, total volume of return air before section of leaking out
4426m3/ min, leak out a section gyrus compositus posterior air quantity 5462m3/ min, blower fan exhaust air rate 5589m3/ min, main fan power 252KW, mine
Flowing resistance 2898Pa (flowing resistance 2670pa before mine air leakage section), divulge information before mine air leakage section the ㎡ ＜ 2 of equivalent orifice 1.67, leads to
Wind difficulty level is medium, surface air leakage amount 1163m3/ min (leak out 1036m by wherein total wind section3/ min), surface air leakage rate
20.8%；
After air-leakage control during+6 ° of main fan leaf angle, total intake 5089m3/ min, total volume of return air 5203m before section of leaking out3/
Min, leak out a section gyrus compositus posterior air quantity 5277m3/ min, blower fan exhaust air rate 5342m3/min, main fan power 224KW, negative pressure 2444Pa,
The ㎡ ＞ 2 of equivalent orifice 2.14, ventilation difficulty level is easy, surface air leakage amount 223m3/ min (leak out 74m by wherein total wind section3/ min),
Surface air leakage rate 4.2%；
After air-leakage control, it is -3 ° to adjust blade angle according to mine air-required volume, total intake 3489m3/ min, section of leaking out
Preceding total volume of return air 3539m3/ min, leak out a section gyrus compositus posterior air quantity 3584m3/ min, blower fan exhaust air rate
3664m3/min, main fan power 143KW, negative pressure 1228Pa, the ㎡ of equivalent orifice 2.08, ventilation difficulty level be it is easy,
Surface air leakage amount 175m3/ min (leak out 66m by wherein total wind section3/ min), surface air leakage rate 4.78%.
Before data below is carried out for the prosperous colliery+1100m main return airways air-leakage control project of prestige, and all kinds of numbers after implementation
According to contrast, mainly include air quantity contrast, wind speed contrast, negative pressure contrast, and the contrast of the information such as current of electric, motor temperature.
Data statistics shows：Before air-leakage control ,+1100 main return airway surface air leakage 1163m3/ min, surface air leakage rate
20.8%, 159~223m of surface air leakage after air-leakage control3/ min, air leak rate of air curtain are less than 5%.Economic and Efficiency Analysis：Total wind, which leaks out, to be controlled
After reason, according to the actual required airflow of mine, blade angle reduces 9 °, and main fan power reduces 97KW, saves energy consumption 7.12 ten thousand by the moon
Member, mine resistance are down to 1228Pa by original 2898Pa, and ventilation degree of difficulty is changed into easy from original is medium.
It is annual to save expense：7.12 × 12=85.4, i.e., between saving expense is 85.4 ten thousand yuan every year.It is existing according to the ore deposit
40 years mine service-lives, expense can be saved：Ten thousand yuan of 85.4 × 40=3416, economic benefit highly significant.
Construction technology simple and fast of the present invention, required equipment and material requirements be not high, low to worker's technical requirements, in karst
There is good effect and economic benefit in the air-leakage control of region mine total return air lane, have in other tunnels of same type, mining area
There is replicability, application prospect is extensive, is administered for all kinds of tunnel Anti-air-leakages and provides the technical measures referred to, good to being formed
Ventilated environment, lifting mine safety production is horizontal to have active and effective facilitation.
It is described above to be only the preferred embodiments of the present invention, any formal limitation not is made to the present invention,
Every technical spirit according to the present invention belongs to any simple modification made for any of the above embodiments, equivalent variations and modification
In the range of technical solution of the present invention.
Claims (4)
1. a kind of quick metal anchors wall construction method administered karst region mine total return air lane and leaked out, it is characterised in that described
Administer the quick metal anchors wall construction method to leak out in karst region mine total return air lane and cover plate, side plate alignment are arranged on tunnel
The connection anchor pole of wall simultaneously marks perforate symbol, then transports cover plate, side plate outside tunnel, carries out perforate, after the completion of perforate, then will
Cover plate, side plate transport original position, installation cover plate, side plate, adjacent cover plate, the connection of side plate flange back；Encryption connection anchor pole；Prearrangement of deformation amount
Space, with lapicide Jiang Qiang, arch country rock tick slot, packing is filled in groove, packing will exceed roadway surrounding rock most salient point 2cm, pacify
When capping plate, side plate, packing is tightly forced extrude plain；Slag is built in cleaning tunnel, and actual measurement checks that closure is leaked out situation.
2. administering the quick metal anchors wall construction method to leak out in karst region mine total return air lane as claimed in claim 1, it is special
Sign is, after the completion of the perforate, jacks cover plate using fork truck, connection anchor pole is passed through cover plate, and upper plain cushion and nut simultaneously screw,
Adjacent cover plate, the connection of side plate flange.
3. administering the quick metal anchors wall construction method to leak out in karst region mine total return air lane as claimed in claim 1, it is special
Sign is, is needed before the perforate：
Roadway floor is played into bottom from inside to outside, and ships cash slag and unloads cash point to ground is specified；
Drill bit beats connection anchor pole connection eye；
Allianz processed connects anchor pole, and connection anchor pole is consolidated with high grade mortar；
System peace metal anchors wall side plate, during installation alignment installed in wall connection anchor pole and mark perforate symbol, then will
Side plate is transported outside tunnel, carries out perforate, after the completion of perforate, then transports side plate back original position, and connection anchor pole is passed through into side plate hole, side
After plate installation is in place, upper plain cushion, the eyelet of plain cushion is more than connection bolt diameter, then upper cap nut and tightens, corrects side plate, adjacent
Side plate flange couples and consolidated, and longer connection anchor pole is sliced off.
4. the quick metal anchors wall construction method to leak out in karst region mine total return air lane is administered as claimed in claim 3, its
It is characterised by, the drill bit beats connection anchor pole connection eye, by rectangular arrangement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610309814.2A CN105971644B (en) | 2016-05-11 | 2016-05-11 | Administer the quick metal anchors wall construction method that karst region mine total return air lane is leaked out |
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| Publication number | Publication date |
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| CN105971644A (en) | 2016-09-28 |
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