CN105587333A - Ventilating and dust removing device of tunneling work face - Google Patents
Ventilating and dust removing device of tunneling work face Download PDFInfo
- Publication number
- CN105587333A CN105587333A CN201610101612.9A CN201610101612A CN105587333A CN 105587333 A CN105587333 A CN 105587333A CN 201610101612 A CN201610101612 A CN 201610101612A CN 105587333 A CN105587333 A CN 105587333A
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- machine
- bolter
- roof
- entrance
- air duct
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- 239000000428 dust Substances 0.000 title claims abstract description 74
- 230000005641 tunneling Effects 0.000 title claims abstract description 21
- 230000000694 effects Effects 0.000 abstract description 14
- 230000008093 supporting effect Effects 0.000 abstract description 10
- 230000002250 progressing effect Effects 0.000 abstract 2
- 238000009423 ventilation Methods 0.000 description 24
- 238000010276 construction Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 238000009412 basement excavation Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/006—Ventilation at the working face of galleries or tunnels
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/04—Air ducts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a ventilating and dust removing device of a tunneling work face. The ventilating and dust removing device of the tunneling work face comprises a tunneling machine, an anchor rod machine and a dust removing machine. An anchor rod machine air flue is formed in the anchor rod machine; an air flue outlet is connected with the dust removing machine through a first dust removing air duct; the ventilating and dust removing device of the tunneling work face further comprises a first telescopic air flue; a first inlet of the first telescopic air flue is fixed behind a machine head of the tunneling machine; a first outlet of the first telescopic air flue is communicated with an air flue inlet of the anchor rod machine air flue; telescopic length of the first telescopic air flue is progressing distance between the tunneling machine and the anchor rod machine. According to the ventilating and dust removing device of the tunneling work face, by arranging the first telescopic air flue, a dust removing source of the tunneling machine work face extends nearby the machine head, and a good ventilating and dust removing effect is guaranteed; meanwhile, by means of the telescopic length of the first telescopic air flue, the ventilating and dust removing device adapts to the progressing distance between the tunneling machine and the anchor rod machine, and continuous operation is guaranteed while it is guaranteed that supporting of the anchor rod machine is in place.
Description
Technical field
The ventilation safety equipment technical field that the present invention relates to coal mine roadway driving, is specifically related to oneAutomation examination dust arrester.
Background technology
Tunneling ventilation is the Focal point and difficult point of colliery " one through three prevention " management always. In China's coal-mineIn accident statistics, due to the caused gas and dust explosion accident of local ventilation problem, to account for colliery similarThe more than 80% of accident. At present, wide not about the research of single lane speedy drivage face-airing dedustingGeneral and deep, research concentrates on and how to extend ventilation distance to improve the Excavation Length in tunnel mostly,To reach the effect that extends working face Excavation Length.
For the driving system of the large section speedy drivage of colliery coal road construction by development machine, roof-bolter,Supporting conveying arrangement, forced booster, flexible air duct, pull-out type dedusting fan, rigidityThe compositions such as air duct, its development machine is used for realizing speedy drivage; Roof-bolter is for roadway support; SupportingConveying arrangement is made up of disintegrating machine, reprinting portion and automatic telescopic ribbon conveyer, fast to realize single laneSpeed driving; Forced booster and flexible air duct are constantly carried fresh wind to working face; Extract outFormula dedusting fan and rigidity air duct are for face-airing and dedusting. Also be that its employing conventionally of ventilating is largePower Fan, ventilation blower series connection local ventilation, ventilation blower local ventilation in parallel, and coordinate major diameterThe forced local ventilation of flexible air duct; Working face dedusting conventionally adopt development machine arrange dedusting fan,Take out and press the method for compound ventilation to reach the object of dedusting, imitate but this technique can only be applicable to drivingIn the lower tunneling construction of rate.
In the conventional at present machine tunneling process such as these fully-mechanized digging machines, Lian Caiji, the fastest company's digging is enteredEfficiency is the 1200m/ month, and speedy drivage efficiency reaches the 3000m/ month. But in speedy drivage construction,Due to the tunnel non-support between development machine and roof-bolter, air duct cannot be manually extended in this section of region,As stop development machine operation, after roof-bolter supporting puts in place, the artificial air duct that extends will affect driving effectRate; And development machine and roof-bolter need to keep certain distance, can only connect for the air duct of dedustingTo roof-bolter place, and pull-out type dedusting fan also plays logical wind action in dedusting, therefore leadCause roof-bolter front poor to ventilation and the dust removing effects of face section.
Summary of the invention
The invention provides a kind of ventilation and good dedusting effect and be applicable to high efficiency continuously tunneling constructionAutomation examination dust arrester.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of automation examination dust arrester is provided, comprises the pick that is arranged at tunneling direction front endEnter machine, be arranged at roof-bolter and the dust removal machine at described development machine rear, described roof-bolter is provided withRoof-bolter air channel, the ducting outlet in described roof-bolter air channel is by the first dedusting air duct and described dedustingMachine connects,
Described automation examination dust arrester also comprises the first extension air tube, and described first canThe first entrance of Telescopic air duct is fixed on the rear of the head of described development machine, described first scalableThe first outlet of air duct is communicated with the air channel entrance in described roof-bolter air channel,
The collapsing length of described the first extension air tube is between described development machine and described roof-bolterProgress distance.
Further, the described ducting outlet in described roof-bolter air channel and described the first dedusting air duct itBetween be connected with the second extension air tube, described roof-bolter air channel, described the second extension air tube andDescribed the first dedusting air duct is connected.
Further, the front end of described the first extension air tube is also connected with the second dedusting air duct,Described the second dedusting air duct is fixedly installed on the rear of described head.
Preferably, described the second dedusting air duct comprises the second entrance and the second outlet, and described second entersMouth is h1 with the distance of described head, h1≤5m; The company of described the second outlet and described the first entranceConnect.
Preferably, described the second dedusting air duct is boundling air duct, the air duct outlet of described boundling air ductAll be connected with described the first entrance by draught distributing box.
Preferably, the distance of described the second entrance and described air channel entrance is h2, h2≤50m. Enter oneStep ground, the rear of described development machine is provided with reprinting portion, front end and the described development machine of described reprinting portionRear end connect, the rear end of described reprinting portion is through the bottom of described roof-bolter and extend to institute alwaysState the below of dust removal machine, described the first dedusting air duct is fixed in described reprinting portion by support.
Further, described automation examination dust arrester also comprises and is arranged at described drivingThe transporter of direction rear end, the rear end of described reprinting portion is arranged on described transporter, described dedustingMachine is arranged on described transporter.
Alternatively, described automation examination dust arrester also comprises pressure fan, described pressure fanBe connected with vent wind cone, described vent wind cone comprises the 3rd entrance and the 3rd outlet, and the described the 3rd entersMouth is connected with described pressure fan, and described the 3rd outlet is positioned at the rear of described roof-bolter.
Preferably, described the 3rd outlet is h3 with the distance of the rear end of described roof-bolter, h3≤25m.
Compared with prior art, automation examination dust arrester of the present invention is at the anchor of roof-bolterThe connection of porch, bar machine air channel arranges the first extension air tube, and by first of the first extension air tubeEntrance is fixed on the head rear of development machine, enables the source of development machine working face dedusting to prolongExtend near head, ensure good ventilation and dust removing effects; Utilize the first extension air tube simultaneouslyCollapsing length adapt to the progress distance of development machine and roof-bolter, put in place in the supporting of guarantee roof-bolterAlso realized the continuous operations of the large section Dan of long distance lane speedy drivage construction simultaneously.
Brief description of the drawings
Fig. 1 is the top view of automation examination dust arrester in one embodiment of the invention.
Fig. 2 is the another schematic diagram of automation examination dust arrester in one embodiment of the invention.
The Reference numeral table of comparisons:
2-fresh distinguished and admirable 3-in 1-tunnel refluxes distinguished and admirable
10-development machine 11-head 12-reprinting portion
211-air channel, 20-roof-bolter 21-roof-bolter air channel entrance
212-ducting outlet 30-dust removal machine 40-the first extension air tube
40-first extension air tube 41-the first entrance 42-first exports
50-first dedusting air duct 60-second extension air tube 70-the second dedusting air duct
71-the second entrance 72-second exports 73-draught distributing box
80-transporter 90-pressure fan 91-vent wind cone
911-the 3rd entrance 912-the 3rd outlet
The distance of h1-the second entrance and head
The distance of h2-the second entrance and air channel entrance
The distance of the rear end of h3-the 3rd outlet and roof-bolter
F-tunneling direction
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Be the embodiment of automation examination dust arrester of the present invention as shown in Figure 1 and Figure 2, it is mainTo be formed by development machine 10, roof-bolter 20, dust removal machine 30 and the first extension air tube 40. PickEnter machine 10 for realizing the driving in tunnel 1 and being arranged on the front end of tunneling direction F; Roof-bolter 20For supported laneway 1 and be arranged on the rear of development machine 10, wherein, on roof-bolter 20, fixedly establishBe equipped with roof-bolter air channel 21; The ducting outlet 212 in roof-bolter air channel 21 is by the first dedusting air duct50 are connected with dust removal machine 30, to realize the ventilation and dust removal of tunnel 1 while tunneling; And the first scalable wind40, cylinder is arranged on air channel entrance 211 places in roof-bolter air channel 21, and the first extension air tube 40 wrapsDraw together the head 11 that the first entrance 41 and the first outlet 42, the first entrances 41 are fixed on development machine 10Rear, the first outlet 42 be communicated with the air channel entrance 211 in roof-bolter air channel 21, wherein, theThe collapsing length of one extension air tube 40 is the progress distance between development machine 10 and roof-bolter 20.It should be noted that, " front end " in the present embodiment, refers to the left side in corresponding diagram 1, Fig. 2.
In the tunneling construction process in tunnel 1, in the time that development machine 10 tunnels, roof-bolter 20 simultaneouslyMove forward to ensure supporting; When development machine 10 is worked, working face produces a large amount of dust, dust removal machine30 work with ventilation and dust removal simultaneously; Due to the ventilation and dust removal effect of dust removal machine 30, drive fresh distinguished and admirable2 inflow, and make dust and reflux distinguished and admirable 3 to obtain pump drainage, thus make distinguished and admirable continuously. In realityIn construction, due to the support speed of roof-bolter 20 and the driving speed of development machine 10 be difficult to ensure withStep, when the speed hour that the speed of roof-bolter 20 supportings is tunneled than development machine 10, roof-bolter 20 withDistance between development machine 10 widens; When the speed of roof-bolter 20 supportings is tunneled than development machine 10When speed is large, the distance between roof-bolter 20 and development machine 10 is dwindled. Pass through at roof-bolter 2021 porch, roof-bolter air channel connect the first extension air tube 40 be set, and by the first scalable windThe first entrance 41 of cylinder 40 is fixed on head 11 rears of development machine 10, enables drivingThe source of machine 10 working face dedustings extends near head 11, ensures good ventilation and dedusting effectReally; Utilize the collapsing length of the first extension air tube 40 to adapt to development machine 10 and roof-bolter 20 simultaneouslyProgress distance, ensureing also to have realized in roof-bolter 20 supportings put in place the large section of long distanceThe continuous operations of single lane speedy drivage construction.
Because the advance speed of mobile speed and roof-bolter 20 supportings of dust removal machine 30 not necessarily ensuresSynchronously, and tunnel 1 has certain length, for fear of connecting dust removal machine 30 and roof-bolter windThe first dedusting air duct 50 in road 21 easily draws bad or breaks, at the ducting outlet in roof-bolter air channel 21212 places arrange the second extension air tube 60, i.e. roof-bolter air channel 21, the second extension air tube 60And first dedusting air duct 50 be connected. The setting of the second extension air tube 60 is equivalent to roof-bolterBetween air channel 21 and dust removal machine 30, be flexible coupling, avoided preferably the damage of the first dedusting air duct 50.
In order further to improve efficiency of dust collection and ventilation effect, at the front end of the first extension air tube 40Can also arrange the second dedusting air duct 70, the second dedusting air ducts 70 be fixedly installed on head 11 afterSide. In the time that development machine 10 tunnels, a large amount of dust that driving face produces can take the lead in removing from secondDirt air duct 70 enters, more successively by the first extension air tube 40, roof-bolter air channel 21, secondExtension air tube 60 and the first dedusting air duct 50 extract.
Preferably, the second dedusting air duct 70 is boundling air duct, and the air duct outlet of boundling air duct is all passed throughDraught distributing box 73 is connected with the first entrance 41. , the second dedusting air duct 70 can be by multiple little air ductsComposition, the air duct outlet of these little air ducts is all connected on a draught distributing box 73, and by this point of windCase 73 is communicated with the first extension air tube 40. In the present embodiment, consider usage space and dedustingEffect, selects that eight little air ducts are set and forms the second dedusting air duct 70, and wherein, four little air ducts are establishedPut at the top of development machine 10, remain four little air ducts and be close to respectively and be arranged on two of development machine 10Side (owing to being top view, four little air ducts that lay respectively at development machine 10 two sides are overlapping between two,Therefore the two sides at development machine 10 in figure only respectively show a little air duct), to ensure development machine 10Comprehensive dedusting of working face.
Wherein, the second dedusting air duct 70 comprises the second entrance 71 and the second outlet 72, in order to ensurePreferably dust removing effects, as shown in Figure 1 and Figure 2, the second entrance 71 with the distance of head 11 isH1, h1≤5m; The second outlet 72 is connected with the first entrance 41. It should be noted that, althoughRoof-bolter 20 can not ensure Complete Synchronization with development machine 10, but the speed of at least advancing can not differToo far away, the distance of the progress between the two can not be too large, in order to avoid affect dust removing effects, and therefore, forPreferably dust removing effects of further guarantee, as shown in Figure 1 and Figure 2, the second entrance 71 and air channelThe distance of entrance 211 is h2, h2≤50m. In addition, it should be noted that the choosing of dust removal machine 30Select and should select according to power and the efficiency of dust collection of required dust removal machine in practice of construction process, and theOne dedusting air duct 50 even the second extension air tube 60 length also should according to practice of construction needs,The travel frequency of relevant device etc. is set, and is also dust removal machine 30 and the first extension air tube 40The first entrance 41/ first outlet 42 between system and the heading driver of distance while being subject to actual useThe restriction of order, only needs the distance that ensures h1, h2 can realize preferably dedusting and ventilation effect.
Because the space in tunnel 1 is very limited, in order to make each air duct can stablize installing,Also walk for the ease of the material transportation that development machine 10 is tunneled to generation, establish at the rear of development machine 10Put reprinting portion 12, the front end of reprinting portion 12 is connected with the rear end of development machine 10, reprinting portion 12 afterEnd also extends to the below of dust removal machine 30, the first dedusting air duct always through the bottom of roof-bolter 2050 are fixed in reprinting portion 12 by support (not shown). When actual use, the first scalable windCylinder 40, the second extension air tube 60 also can be fixed by reprinting portion 12, but consider itTelescopicing performance, generally do not adopt the fixing mode of support, and the mode that adopts rope to hang is concreteCan select according to site operation situation.
Preferably, automation examination dust arrester also comprises and is arranged at tunneling direction F rear endTransporter 80, the rear end of reprinting portion 12 is arranged on transporter 80, and dust removal machine 30 is arranged at transportOn machine 80, to save space. Transporter 80 can be for various devices such as carrying motors; And willThe rear end of reprinting portion 12 is arranged on transporter 80, when development machine 10 and roof-bolter 20 are in tunnel 1Inside enter certain depth, reprinting portion 12 is along with development machine 10 moves forward, in the middle of this processThe collapsing length of one extension air tube 40 and the second extension air tube 60 is not unlimited, needsTransporter 80 step run thereupon. In the present embodiment, transporter 80 is supporting transporter.
In the present embodiment, distinguished and admirable continuous in order to ensure, further strengthen ventilation effect, the present embodimentAutomation examination dust arrester also comprises pressure fan 90, and pressure fan 90 can be arranged on driving sideTo the end of F and connect a vent wind cone 91. As shown in Figure 1, vent wind cone 91 comprises the 3rdEntrance 911 and the 3rd outlet 912, the three entrances 911 are connected with pressure fan 90, the 3rd outlet 912Be positioned at the rear of roof-bolter 20. Be understandable that, in the time there is no vent wind cone 91, for ensureingEnough air outputs and ventilation effect, pressure fan 90 should be arranged on roof-bolter 20 rears closeIn the scope of roof-bolter 20 certain distances. Preferably, as shown in Figure 1 and Figure 2, the 3rd outlet 912With the distance of the rear end of roof-bolter 20 be h3, h3≤25m. Prove through a large amount of construction tests,Keep above-mentioned certain distance to be conducive to fresh distinguished and admirable 2 send into, but distance can not exceed 25m withAvoid the deficiency in draught of driving face, cannot meet the demands.
At the air duct of the automation examination in colliery, generally by two kinds, one is flexible air duct, anotherOne is skeleton air duct; And the conventional flexible air duct of plenum ventilation, exhaust ventilation is conventional skeleton windCylinder. In the present embodiment, dust removal machine 30 adopts pull-out type dust removal machine, and pressure fan 90 adopts forcedBooster, therefore the first extension air tube 40, the second extension air tube 60, the first dedusting air duct50 and second dedusting air duct 70 all adopt skeleton air duct; Vent wind cone 91 adopts flexible air duct.
Adopt automation examination dust arrester of the present invention to simplify working procedure, effectively carryHigh ventilation and the dust removing effects of driving face, has also stoped working face dust to expand to roof-bolter 20Fall apart and affect staff's operation, having improved the security of operation.
The above embodiment is only for clearly demonstrating example of the present invention, and its description is comparatively concreteIn detail, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention. Should be understood thatBe, for the person of ordinary skill of the art, without departing from the inventive concept of the premise,Can also make some distortion and improvement, these all belong to protection scope of the present invention. Therefore, originallyThe protection domain of patent of invention should be as the criterion with claims.
Claims (10)
1. an automation examination dust arrester, comprises the driving that is arranged at tunneling direction front endMachine (10), the roof-bolter (20) that is arranged at described development machine (10) rear and dust removal machine (30),Described roof-bolter (20) is provided with roof-bolter air channel (21), the wind in described roof-bolter air channel (21)Road outlet (212) is connected with described dust removal machine (30) by the first dedusting air duct (50), its spyLevy and be,
Described automation examination dust arrester also comprises the first extension air tube (40), describedFirst entrance (41) of one extension air tube (40) is fixed on the head of described development machine (10)(11) rear, the first outlet (42) and described anchor pole of described the first extension air tube (40)The air channel entrance (211) in machine air channel (21) is communicated with,
The collapsing length of described the first extension air tube (40) be described development machine (10) with described inProgress distance between roof-bolter (20).
2. automation examination dust arrester according to claim 1, is characterized in that,The described ducting outlet (212) in described roof-bolter air channel (21) and described the first dedusting air duct (50)Between be connected with the second extension air tube (60), described roof-bolter air channel (21), described second canTelescopic air duct (60) and described the first dedusting air duct (50) are connected.
3. automation examination dust arrester according to claim 1, is characterized in that,The front end of described the first extension air tube (40) is also connected with the second dedusting air duct (70), and describedTwo dedusting air ducts (70) are fixedly installed on the rear of described head (11).
4. automation examination dust arrester according to claim 3, is characterized in that,Described the second dedusting air duct (70) comprises the second entrance (71) and the second outlet (72),
Described the second entrance (71) is h1 with the distance of described head (11), h1≤5m; DescribedThe second outlet (72) is connected with described the first entrance (41).
5. automation examination dust arrester according to claim 4, is characterized in that,Described the second dedusting air duct (70) is boundling air duct, and the air duct outlet of described boundling air duct is all passed throughDraught distributing box (73) is connected with described the first entrance.
6. automation examination dust arrester according to claim 4, is characterized in that,Described the second entrance (71) is h2 with the distance of described air channel entrance (211), h2≤50m.
7. automation examination dust arrester according to claim 1, is characterized in that,The rear of described development machine (10) is provided with reprinting portion (12), the front end of described reprinting portion (12) withThe rear end of described development machine (10) connects, described anchor pole is passed in the rear end of described reprinting portion (12)The bottom of machine (20) also extends to the below of described dust removal machine (30), described the first dedusting alwaysAir duct (50) is fixed in described reprinting portion (12) by support.
8. automation examination dust arrester according to claim 7, is characterized in that,Described automation examination dust arrester also comprises the transporter that is arranged at described tunneling direction rear end(80), it is upper that the rear end of described reprinting portion (12) is arranged at described transporter (80), described dedustingMachine (30) is arranged on described transporter (80).
9. according to the automation examination dust arrester described in claim 1 to 8 any one, itsBe characterised in that, described automation examination dust arrester also comprises pressure fan (90), described air-supplyMachine (90) is connected with vent wind cone (91), and described vent wind cone (91) comprises the 3rd entrance (911)With the 3rd outlet (912), described the 3rd entrance (911) is connected with described pressure fan (90), instituteState the rear that the 3rd outlet (912) is positioned at described roof-bolter (20).
10. automation examination dust arrester according to claim 9, is characterized in that,Described the 3rd outlet (912) is h3 with the distance of the rear end of described roof-bolter (20), h3≤25m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610101612.9A CN105587333A (en) | 2016-02-24 | 2016-02-24 | Ventilating and dust removing device of tunneling work face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610101612.9A CN105587333A (en) | 2016-02-24 | 2016-02-24 | Ventilating and dust removing device of tunneling work face |
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| CN105587333A true CN105587333A (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610101612.9A Pending CN105587333A (en) | 2016-02-24 | 2016-02-24 | Ventilating and dust removing device of tunneling work face |
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| CN109268054A (en) * | 2018-11-29 | 2019-01-25 | 中钢集团马鞍山矿山研究院有限公司 | It is a kind of for underground big cross section, the ventilating and purifying air system in long distance driving face |
| CN111502726A (en) * | 2020-04-22 | 2020-08-07 | 西安科技大学 | Method for establishing wind field regulation and control rules of tunneling face in different ventilation and tunneling modes |
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| CN111502726A (en) * | 2020-04-22 | 2020-08-07 | 西安科技大学 | Method for establishing wind field regulation and control rules of tunneling face in different ventilation and tunneling modes |
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Application publication date: 20160518 |