CN110469358A - Main return remodeling method suitable for underground centralized return air system - Google Patents
Main return remodeling method suitable for underground centralized return air system Download PDFInfo
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- CN110469358A CN110469358A CN201910758835.6A CN201910758835A CN110469358A CN 110469358 A CN110469358 A CN 110469358A CN 201910758835 A CN201910758835 A CN 201910758835A CN 110469358 A CN110469358 A CN 110469358A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000007634 remodeling Methods 0.000 title claims abstract description 19
- 238000013461 design Methods 0.000 claims abstract description 37
- 239000007921 spray Substances 0.000 claims abstract description 25
- 239000002699 waste material Substances 0.000 claims abstract description 15
- 238000005406 washing Methods 0.000 claims abstract description 8
- 238000012986 modification Methods 0.000 claims abstract description 5
- 230000004048 modification Effects 0.000 claims abstract description 5
- 239000004567 concrete Substances 0.000 claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 239000011150 reinforced concrete Substances 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 11
- 230000009466 transformation Effects 0.000 claims description 7
- 239000003351 stiffener Substances 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 5
- 239000004575 stone Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005246 galvanizing Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 238000009423 ventilation Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- 210000003205 muscle Anatomy 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 229910000571 Auricupride Inorganic materials 0.000 description 2
- 238000013475 authorization Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000005453 pelletization Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000006424 Flood reaction Methods 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
-
- 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
-
- 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
- E21F1/10—Air doors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/304—Hydrogen sulfide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
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- Mining & Mineral Resources (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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Abstract
The invention discloses a kind of main return remodeling methods suitable for underground centralized return air system, including S1, progress underground main return modification scheme design；The return air ramp that S2, driving are connected to most superficial part middle section windstone gate；S3, the new return air ingate of driving are connected to lower arc section and returnairshaft；S4, expand the brush return air ramp windstone gate suitable for reading between most superficial part middle section return air ingate；S5, platform for closing return air well shaft is arranged；S6, driving main fan chamber；S7, main fan is set in main fan chamber；S8, spray equipment is set in the main return that main fan exit is concentrated in underground, washing, purifying is carried out to waste air.The present invention can effectively solve the problems, such as to lack that the more middle section windstone gate fan parallel-connections in underground under the conditions of centralized return air system machine station generate interferes with each other；It can solve the problems, such as main fan can not be installed in returnairshaft well head because of expropriation of land, environmental protection or geographical reason；Existing ventilating system is influenced smaller；Environmental protection.
Description
Technical field
The invention belongs to underground metalliferous mines and non-metal mine aeration technology field, more particularly to one kind to be suitable for underground collection
The main return remodeling method of middle return air.
Background technique
As metal and nonmetal mine is gradually transferred to deep mining by superficial part, part old mine is because of expropriation of land, environmental protection or geographical original
Cause fails that main fan is arranged in returnairshaft well head, and former ventilating system uses underground multi fan Multi-stage station ventilation, not set total
Windstone gate, system return side only install blower at each middle section windstone gate in underground, waste air are drained into returnairshaft and is back to earth's surface.
But as the multiple new middle section step by step inputs of mine deep produce, while the original old middle section late release of superficial part, cause in total system
Section windstone gate blower quantity increases, and generates interference between each other.Cause part middle section inverted air current, the distinguished and admirable disordered flow in underground
Dynamic, total blast volume reduces, and blower is inefficient or stall is run, and stope ventilation condition is poor, and worker's operating environment is severe, ventilation safety problem
It is prominent.Thoroughly to solve the problems, such as such mine ventilation, underground most superficial part return air middle section windstone gate and returnairshaft need to be transformed, be arranged
The main return of centralized return air system, installs main fan in main return, individually concentrate extraction or with original each middle section return air stone
Door fans in series forms return side two-stage machine station, just can guarantee system required airflow and the distinguished and admirable olderly flowage of return side.
Authorization Notice No. is the Chinese patent of CN109595025A, discloses a kind of air return structure of Underground Metallic Mines.
The structure, will be each using exploiting field return air raise by setting a return air middle section between the adjacent ore removal level of every two layers of vertical depth
The adjacent top in return air middle section and the horizontal waste air of lower part ore removal lead to the return air and are horizontally formed return air access, return for reducing underground
Segment number in wind reduces mine construction investment and production cost.But main return of the structure without underground centralized return air system, Zhi Neng
Returnairshaft well head installs main air blower or installs blower in each return air middle section in underground, and blower can not be installed by not being suitable for returnairshaft well head
Or underground middle section windstone gate blower interferes with each other, and the Reform of Ventilation System in Mine Shaft of main return of the underground without centralized return air system.
Summary of the invention
The purpose of the present invention is to solve the shortcomings of the prior art place, providing a kind of satisfaction can not pacify in returnairshaft well head
Fill blower, lack underground concentrate main return under the conditions of, by main fan be mounted on underground centralized return air system be suitable for underground
The main return remodeling method of centralized return air system.
This main return remodeling method suitable for underground centralized return air system provided by the invention, original ventilating system master return
Air duct includes most superficial part middle section windstone gate, deep middle section windstone gate, most superficial part middle section windstone gate machine station blower, deep time
Wind crossdrift machine station blower, returnairshaft and most superficial part middle section return air ingate, remodeling method the following steps are included:
S1, the design of underground main return modification scheme is carried out
The return air ramp and new return air ingate of design connection most superficial part middle section windstone gate and returnairshaft, return air slope
Road includes the upper arc section being sequentially communicated up and down, straightway and lower arc section, and it is suitable for reading that return air ramp is equipped on upper arc section；
The design connection return air ramp expansion brush section suitable for reading with most superficial part middle section return air ingate；
The platform of design closing return air well shaft；
The type design main fan chamber of underground main fan is installed according to needed for system after transformation；
Spray equipment is designed in main fan exit；
The return air ramp that S2, driving are connected to most superficial part middle section windstone gate
From in most superficial part middle section windstone gate, according to the design of S1, successively under to driving return air ramp upper arc section-
The lower arc section of straightway-；
S3, the new return air ingate of driving are connected to lower arc section and returnairshaft
It tunnels new return air ingate according to the design of S1 from lower arc section and is communicated with returnairshaft；
S4, expand the brush return air ramp windstone gate suitable for reading between most superficial part middle section return air ingate
Most superficial part middle section windstone gate machine station blower is removed, from return air ramp place suitable for reading, to most superficial part middle section return air horse
The direction Tou Men carries out expansion brush to most superficial part middle section windstone gate according to the design of S1；Expand after the completion of brush, expands brush Duan Yuxin return air
Ingate, return air ramp constitute spiral main return；
S5, platform for closing return air well shaft is arranged
According to the design of S1, it is arranged in the returnairshaft between most superficial part middle section returnairshaft ingate and new return air ingate
Twice platform；
S6, driving main fan chamber
According to the design of S1, main fan chamber is tunneled in brush section expanding；
S7, installation main fan
According to ventilating system operating condition, in main fan cave indoor location main fan, centralized return air system；In each middle section return air stone
Remote auto damper is set in door, adjusts each middle section return air amount as needed, i.e., transform original system main return as well
The main return of lower centralized return air system constitutes the ventilating system of underground centralized return air system；
S8, installation spray equipment carry out washing, purifying to waste air
According to the design of S1, spray equipment is set in the main return in main fan exit, is arranged through main return
Waste air to earth's surface carries out washing, purifying.
The section size of the return air ramp, new return air ingate and expansion brush section is identical as returnairshaft section, section shape
Shape is basket handle arch or skene arch.
The gradient of the return air ramp is less than or equal to 15%.
The new return air ingate is located at below most superficial part middle section return air ingate bottom plate at 10~20m, new return air head of the horse
Door is in 30~90 ° of angles, 3~10m of new return air ingate length with most superficial part middle section return air ingate opening direction.
The platform is located at most superficial part middle section return air ingate floor level and new return air ingate top elevation
Top includes the girder and secondary beam being criss-cross arranged on return air well shaft cross section in platform.
The platform uses steel structure type, girder and secondary beam to form grid, grid by threaded fastener and Bolted angle connection
On be equipped with bed board, be connected on bed board spacing be not more than 0.8m ribbed stiffener.
The galvanizing that thickness is not less than 120 μm is coated on girder and secondary beam.
Solar is equipped in return air well shaft, solar closing is laid on former manway landing plate using thick checkered steel plate
Top uses cover closure at ladder mouth.
The platform uses reinforced concrete beam and plate formula, and girder cuts the existing borehole wall of returnairshaft and forms hitch, girder
It is arranged with secondary beam using intersecting parallels, armoured concrete slab is formed in girder and secondary beam surrounding casting concrete, in girder and secondary beam
Between armoured concrete slab on reserve lifting manhole, poured between the existing borehole wall of returnairshaft cuts part armoured concrete slab
Concrete forms entirety, sets packaged type reinforced concrete cover plate above lifting manhole and is closed.
The spray equipment is using water spray or spraying form.
Compared with prior art, the invention has the following advantages that
1, spiral main return is constituted by tunneling new return air ingate, return air ramp and expanding brush section, in return air
Well corresponding positions install the air return structure in parallel that platform blocks most superficial part middle section windstone gate and other middle section windstone gates, make waste air
Returnairshaft can only be drained into through main return and be back to earth's surface, effectively solve the more middle section return air in underground under the conditions of shortage centralized return air system machine station
What crossdrift fan parallel-connection generated interferes with each other problem；Without the ventilating shaft of falling section of constructing, overcoming can not construct down under unfavorable geological condition
The problem of section ventilating shaft, project amount saves, and short time limit is transformed；
2, by tunneling main fan chamber in brush section expanding, main fan is made to be placed in underground centralized return air system, engineering and set
It is standby with low investment, without expropriation of land, facilitate ventilating management, avoid influence of the fan noise to shaft mouth operation personnel, can solve because of sign
Ground, environmental protection or geographical reason can not be in the problems of returnairshaft well head installation main fan；
3, during being transformed, most superficial part middle section windstone gate machine station blower is only removed, existing ventilating system is influenced smaller；
4, spray equipment is set in the main return that main fan exit is concentrated in underground, waste air wash net
Change, removes dust, the SO that may contain in waste air2、NO2、H2S, so that purification heel row is distinguished and admirable environment friendly and pollution-free to earth's surface.
Detailed description of the invention
Fig. 1 is former ventilation system setups schematic diagram before transformation.
Fig. 2 is former ventilating system most superficial part middle section air return structure top view before transformation.
Fig. 3 is the implementation figure of step S1 to S4 in the present invention.
Fig. 4 is the implementation figure of step S5 to S8 in the present invention.
Fig. 5 is that main return overlooks enlarged structure schematic diagram in Fig. 4.
Fig. 6 is the sectional configurations figure of steel structure type platform in the present invention.
Fig. 7 is the cross-sectional view in Fig. 6 along I-I line.
Fig. 8 is the cross-sectional view in Fig. 6 along II-II line.
Fig. 9 is primary and secondary beam connecting node drawing in Fig. 7.
Figure 10 is the sectional configurations figure of reinforced concrete beam and plate formula platform in the present invention.
Figure 11 is the cross-sectional view in Figure 10 along III-III line.
Figure 12 is the cross-sectional view in Figure 10 along IV-IV line.
Label and corresponding component name shown in figure are as follows:
1, downcast；2, most superficial part middle section air inlet；3, deep middle section air inlet；4, deep middle section windstone gate；5, most
Superficial part middle section windstone gate；6, deep windstone gate machine station blower；7, most superficial part middle section windstone gate machine station blower；8, return air
Well；9, most superficial part middle section return air ingate；10, upper arc section；11, straightway；12, lower arc section；13, on return air ramp
Mouthful；14, new return air ingate；15, expand brush section；16, main fan chamber；17, main fan；18, spray equipment；19, platform；
20, girder；21, secondary beam；22, the existing borehole wall of returnairshaft；23, bed board；24, angle steel；25, ribbed stiffener；26, armoured concrete slab；
27, manhole is lifted by crane；28, packaged type reinforced concrete cover plate；29, hitch；30, solar；31, remote auto adjusts wind
Door.
Specific embodiment
Embodiment one
Can be seen that the present invention to be suitable for the former ventilating system of underground centralized return air system from Fig. 1 and Fig. 2 includes downcast 1, most
Superficial part middle section air inlet 2, deep middle section air inlet 3, deep middle section windstone gate 4, most superficial part middle section windstone gate 5, deep are returned
Wind crossdrift machine station blower 6, most superficial part middle section windstone gate machine station blower 7 and returnairshaft 8, most superficial part middle section air inlet 2 are located at mine
Well most superficial part, deep middle section air inlet 3 are located at most 2 lower section of superficial part middle section air inlet, most superficial part middle section air inlet 2 and deep middle section
The air intake of air inlet 3 is connected to downcast 1, and the return air end of most superficial part middle section air inlet 2 passes through most superficial part middle section return air stone
Door 5 is connected to returnairshaft 8, and the return air end of deep middle section air inlet 3 is connected to by deep middle section windstone gate 4 with returnairshaft 8, deep
Portion windstone gate machine station blower 6 is located in deep middle section windstone gate 4, and most superficial part middle section windstone gate machine station blower 7 is located at most
In superficial part middle section windstone gate 5.
It can be seen that from Fig. 3 to Fig. 5 in the present invention, original ventilating system main return includes deep middle section return air stone
Door 4, deep windstone gate machine station blower 6, most superficial part middle section windstone gate machine station blower 7, returns at most superficial part middle section windstone gate 5
Ventilating shaft 8 and most superficial part middle section return air ingate 9, remodeling method the following steps are included:
S1, the design of underground main return modification scheme is carried out
The return air ramp and new return air ingate 14 of design connection most superficial part middle section windstone gate 5 and returnairshaft 8, return air
Ramp includes the upper arc section 10 being sequentially communicated up and down, straightway 11 and lower arc section 12, is equipped with back on upper arc section 10
Wind ramp suitable for reading 13, determine return air ramp suitable for reading 13 opening coordinate and azimuth, the gradient of return air ramp and section,
The length of the radius and length of two arc sections, straightway 11, determines opening coordinate, the azimuth, length of new return air ingate 14
And section；
The expansion brush section 15 of design connection return air ramp suitable for reading 13 and most superficial part middle section return air ingate 9, determines and expands brush section
15 section size；
The platform 19 of design closing 8 pit shaft of returnairshaft, determines 19 detent position of platform and structural shape；
The type design main fan chamber 16 that underground main fan 17 is installed according to needed for system after transformation, determines main fan
16 position of blower chamber；
Spray equipment 18 is designed in 17 exit of main fan, determines the form, installation site and technology of spray equipment 18
It is required that；
The return air ramp that S2, driving are connected to most superficial part middle section windstone gate 5
From in most superficial part middle section windstone gate 5, according to the opening coordinate for designing determining return air ramp suitable for reading 13 in S1
And the length at azimuth, the section of return air ramp and the gradient, the radius of two arc sections and length, straightway 11, successively under to
Tunnel arc section 12 under the upper arc section 10- straightway 11- of return air ramp；
S3, the new return air ingate 14 of driving are connected to lower arc section 12 and returnairshaft 8
From lower arc section 12, according to designed in S1 the opening coordinate of determining new return air ingate 14, azimuth, length and
Section tunnels new return air ingate 14 and communicates with returnairshaft 8；
S4, expand brush return air ramp suitable for reading 13 to the windstone gate between most superficial part middle section return air ingate 9
Most superficial part middle section windstone gate machine station blower 7 is removed, from return air ramp suitable for reading 13, to most superficial part middle section return air
The direction of ingate 9 carries out expansion brush to most superficial part middle section windstone gate 5 according to determining section is designed in S1；Expand brush to complete
Afterwards, expand brush section 15 and new return air ingate 14, return air ramp constitute spiral main return；
S5, platform 19 for closing 8 pit shaft of returnairshaft is arranged
According to determining 19 detent position of platform and structural shape is designed in S1, in most superficial part middle section returnairshaft ingate 9
Twice platform 19 is set in the returnairshaft 8 between new return air ingate 14, and two platforms 19 are located at most superficial part middle section return air
At 9 floor level of ingate and above new 14 top elevation of return air ingate；
S6, driving main fan chamber 16
According to the main fan chamber 16 designed in S1 and position, main fan chamber 16 is tunneled in brush section 15 expanding；
S7, installation main fan 17
According to ventilating system operating condition, main fan, centralized return air system are installed in main fan chamber 16；It is returned in deep middle section
In wind crossdrift 4, most superficial part middle section windstone gate 5 and most 2 junction of superficial part middle section air inlet remote auto damper 31 is set,
Each middle section return air amount is adjusted as needed, i.e., original system main return is transform as to the main return of underground centralized return air system, is constituted
The ventilating system of underground centralized return air system；
S8, installation spray equipment 18 carry out washing, purifying to waste air
According to form, installation site and the technical requirements for designing determining spray equipment 18 in S1, go out in main fan 17
Spray equipment 18 is set in the main return at mouthful, washing, purifying is carried out to the waste air for draining into earth's surface through main return.
In the present invention, return air ramp, the section size of new return air ingate 14 and expansion brush section 15 and returnairshaft 8 is disconnected
Face is identical, and section configuration is basket handle arch or skene arch.
In the present invention, spray equipment using water spray or spraying form, when using Sprayable, select high-pressure fog or
The KSW-7500-A type of Huangshan Ke Mei environment Co., Ltd production can be used in one of ultrasonic dry atomizing, high-pressure fog
The FGL-WH24L type high-pressure fog dedusting system of high-pressure fog dust pelletizing system or the production of Guangzhou Fei Gelang environmental protection technology Co., Ltd
The PWZJ-02A type ultrasonic wave dry fog dedusting system of Huangshan Ke Mei environment Co., Ltd production can be used in system, ultrasonic dry atomizing
System or the GN-P2600 type ultrasonic wave dry fog dust pelletizing system of Guangzhou Fei Gelang environmental protection technology Co., Ltd production.
In the present invention, remote auto damper 31 can be used such as Zaozhuang and the production of Shunda mechanical & electronic equipment corporation, Ltd
The long-range air door of intelligent no calender control self closing door SZFM or double leaf without the pressure long-range air door of balance air door light-operated intelligent, can also be used as
Authorization Notice No. is a kind of mining automatic control storm door disclosed in CN207393242U.
From fig. 5, it can be seen that the gradient of return air ramp of the invention is less than or equal to 15%.
In the present invention, new return air ingate 14 is located at below most 9 bottom plate of superficial part middle section return air ingate at 10~20m,
The opening direction of new return air ingate 14 and most superficial part middle section return air ingate 9 is in that 30~90 ° of angles are arranged, new return air ingate
14 length is 3~10m.
Can be seen that platform 19 of the invention from Fig. 6 to Fig. 9 is steel structure type, and platform 19 includes girder 20 and secondary beam 21,
On 8 pit shaft cross section of returnairshaft, girder 20 and secondary beam 21 are arranged using channel steel grid type, and girder 20 is longitudinally arranged, secondary beam 21
20 lateral arrangement of lateral arrangement or girder, secondary beam 21 are longitudinally arranged, adjacent 20 0.4~1.5m of spacing of girder arrangement, adjacent secondary beam
21 0.4~0.8m of spacing are arranged, are equally spaced between girder 20, between secondary beam 21；It is set at girder 20 and the tie point of secondary beam 21
Angle setting steel 24 simultaneously beats bolt hole, and girder 20 and secondary beam 21 are fixed on angle steel 24 by bolt passing through bolt hole, girder 20 and secondary beam
21 be arranged on angle steel 24 it is latticed；After the completion of girder 20 and secondary beam 21 connect, bed board 23, bed board are laid with above its grid
23 use checkered steel plate, and by construction configuration ribbed stiffener 25, ribbed stiffener 25 uses band steel, and spacing is not more than 0.8m；Bed board 23 with
Girder 20, secondary beam 21,25 weld seam of ribbed stiffener are welded using intermittent weld.
As can be seen from Figures 6 and 7, solar 30, the girder steel spacing root at solar 30 are equipped in 8 pit shaft of returnairshaft
It is adjusted according to the actual conditions of solar 30, the closing of solar 30 is laid on former manway landing plate using thick checkered steel plate
It is square, it is adjusted using cover closure, cover board and fixed form by field fabrication at ladder mouth.
In the present invention, girder 20 and secondary beam 21 are all made of galvanizing and carry out anti-corrosion, and zinc coating thickness is not less than 120 μm, oil
Paint is used chlorination epoxy rubber paint 2 times, and every to be not less than 80 μm all over thickness, all bolts are all made of zinc-plated processing, are bolted use
The measure for preventing nut from loosening.
Embodiment two
Can be seen that the present embodiment and embodiment one from Figure 10 to Figure 12 the difference is that: the platform of the present embodiment
Using reinforced concrete beam and plate formula, strength grade of concrete is not less than C30, and platform 19 includes girder 20 and secondary beam 21, master
Beam 20 cuts the existing borehole wall 22 of returnairshaft and forms hitch 29,29 size of hitch is determined according to 20 specification scene of girder；
Girder 20 and secondary beam 21 arrange that 20 lateral arrangement of girder, secondary beam 21 are longitudinally arranged or girder 20 is vertical using intersecting parallels
To arrangement, 21 lateral arrangement of secondary beam, girder 20 or 21 spacing of secondary beam are identical, 0.8~1.5m of spacing range；In girder 20 and secondary beam
21 surrounding casting concretes form armoured concrete slab 26, and armoured concrete slab 26 can cut or not cut Board position certain altitude
The existing borehole wall 22 of interior returnairshaft；The lifting maintenance of square is reserved on armoured concrete slab 26 between girder 20 and secondary beam 21
Hole 27, hole side length are equal to the spacing of girder 20 or secondary beam 21；Part and armoured concrete slab are cut in the existing borehole wall 22 of returnairshaft
26 casting concretes form entirety, set packaged type reinforced concrete cover plate 28 above lifting manhole 27 and are closed.
By taking the transformation of the western wing main return of Hubei auricupride ventilating system as an example:
Hubei auricupride original ventilating system is the central-diagonal arrangement ventilating system of center air inlet both wings return air.Using auxiliary shaft
(net diameter 5m) air inlet, 7 line returnairshaft (net diameter 3.5m) return air of 30 line returnairshaft (net diameter 4m) He Dongyi of the western wing.By
It is lake region farmland in two returnairshaft well heads, flood period returnairshaft well head farmland easily floods, and it is difficult to take over the land for use, therefore the mine can not be
Returnairshaft well head installs main fan.Original system uses " multi fan Multi stages ventilation " exhaust ventilation mode, in each middle section in underground
Fitting machine station blower at windstone gate.Underground waste air drains into 30 line returnairshafts and 7 lines by each middle section windstone gate machine station blower
Earth's surface is discharged after returnairshaft.As the multiple middle sections of the mine deep are put into production, superficial part middle section can not be closed, in total system production
Duan Duoda more than 10, the middle section windstone gate machine station blower of 30 lines and 7 line returnairshafts is connected to up to 22.Underground machine station blower is mutual
Serious interference, part fan inverted air current, inefficient or stall operation.It causes underground total blast volume deficiency, stope ventilation condition poor, leads to
Wind safety problem is prominent.For this purpose, the mine concentrates ventilation scheme to carry out ventilating system Optimizing Reconstruction using underground.Due to the mine
Main return of the mountain without underground centralized return air system, therefore the western wing of original system and eastern wing main return need to be transformed.
As shown in Fig. 3 to Fig. 5, Fig. 9 to Figure 12, specific adaptation step is as follows:
S1, the design of underground main return modification scheme is carried out
Design connects the western wing most return air ramp of the middle section superficial part -270m windstone gate 5 and 30 line returnairshafts 8, new return air
Ingate 14 determines opening coordinate (X=3330811.226, Y=38588124.108, Z=- of return air ramp suitable for reading 13
266.144) and 150 ° 29 ' 40 of azimuth ", 12%, two section of arc section radius of the return air ramp gradient be 10m, upper arc section
10 length are 13.8m, 12 length of lower arc section is 12.3m, 11 length of straightway is 48.5m, return air ramp section
13.15m2, determine the new opening of return air ingate 14 coordinate (X=3330795.165, Y=38588056.883, Z=-
275.307) and 148 ° 21 ' 9 of azimuth ", new return air ingate 14 length 3.8m and section 13.15m2, new return air ingate 14
It is in 80 ° of angles with most 9 opening direction of the middle section superficial part -270m return air ingate, new return air ingate 14 is located in most superficial part -270m
The place about 10m below middle section return air ingate 9 bottom plate (most 9 floor level of the middle section superficial part -270m return air ingate for -
265.705m)；
Determine the section size for expanding brush section 15 of return air ramp suitable for reading 13 to the most middle section superficial part -270m return air ingate 9
13.15m2；
Design closing 8 pit shaft of returnairshaft platform 19, determine 19 position of platform (be located at -265.705m, -
At 270.353m absolute altitude) and structural shape be reinforced concrete beam and plate formula；
Main fan 17 type design main fan chamber 16 in underground is installed according to needed for system after transformation, determines main pectinid
16 position of machine chamber；
17 exit spray equipment of main fan, 18 form is determined as water spray, installation site is located at main fan chamber 16 and goes out
To between the most middle section superficial part -270m return air ingate 9 on the outside of air port, nozzle is arranged along vault, spacing 1m；
Return air ramp, new return air ingate 14 and expansion 15 section configuration of brush section are three-core crowned section；
The return air ramp that S2, driving are connected to most superficial part middle section windstone gate 5
From in the most middle section superficial part -270m windstone gate 5, according to the determining return air ramp of design 13 opening coordinate suitable for reading,
Azimuth, section and the gradient, successively under to driving return air ramp upper arc section 10- straightway 11- under arc section 12；
S3, the new return air ingate 14 of driving are connected to lower arc section 12 and returnairshaft 8
From lower arc section 12, according to the design determining opening of return air ingate 14 coordinate, azimuth, length and section, pick
It is communicated into new return air ingate 14 with returnairshaft 8；
S4, expand brush return air ramp suitable for reading 13 to the windstone gate between most superficial part middle section return air ingate 9
Most superficial part middle section windstone gate machine station blower 7 is removed, from return air ramp suitable for reading 13, to most superficial part middle section return air
9 direction of ingate carries out expansion brush to most superficial part middle section windstone gate 5 according to the determining section of design；Expand after the completion of brush, expands brush
Section 15 constitutes spiral main return with new return air ingate 14, return air ramp 10~12；
S5, setting twice are used to close between most superficial part middle section return air ingate 9 and new return air ingate 14 in returnairshaft 8
The platform 19 of 8 pit shaft of returnairshaft
According to determining 19 detent position of platform and structural shape is designed in S1, in most superficial part middle section returnairshaft ingate 9
The platform 19 of twice reinforced concrete beam and plate formula is set in the returnairshaft 8 between new return air ingate 14；
To reinforced concrete beam and plate formula platform 19, strength grade of concrete is not less than C30；Reinforced beam uses
Intersecting parallels arrangement, 20 lateral arrangement of girder, secondary beam 21 are longitudinally arranged；Girder 20 or 21 spacing of secondary beam are identical, and spacing is 1m；It is main
The wide 0.2m in 20 section of beam, high 0.35m；The wide 0.2m in 21 section of secondary beam, high 0.25m；20 stirrup Φ of girder, 8@150/300 (2), top
Elongated 2 Φ 10 of muscle, elongated 2 Φ 16 of muscle in lower part；21 stirrup Φ of secondary beam, 8@200 (2), the elongated muscle in top and lower part are 2 Φ 10；
Girder 20 need to cut the existing borehole wall 22 of returnairshaft and form hitch 29, and 29 size of hitch is true according to 20 specification of girder scene
It is fixed；
26 thickness 0.15m of armoured concrete slab, two be 8@150 of X&Y Φ to vertical muscle is penetrated through in plate, cuts armoured concrete slab 26
The existing borehole wall 22 of returnairshaft in the certain altitude of position；
Square lifting manhole 27 is reserved between girder 20 and secondary beam 21, hole side length is equal to 1m；
It pours the existing borehole wall 22 of returnairshaft and cuts part and 26 structure of armoured concrete slab, formed whole；
It sets packaged type reinforced concrete cover plate 28 above lifting manhole 27 to be closed, packaged type armored concrete
Cover board 28 is 1.2m long, wide 0.55m, thick 0.08m；
S6, expanding driving main fan chamber 16 in brush section 15
According to the main fan chamber 16 of design and position, main fan chamber 16 is tunneled in brush section 15 expanding；
S7, main fan 17 is installed in main fan chamber 16
According to ventilating system operating condition, main fan 17, centralized return air system are installed in main fan chamber 16；In deep middle section
In windstone gate 4, most superficial part middle section windstone gate 5 and most 2 junction of superficial part middle section air inlet remote auto damper is set
31, each middle section return air amount is adjusted as needed, i.e., original system main return is transform as to the main return of underground centralized return air system, structure
At the ventilating system of underground centralized return air system；
S8, spray equipment 18 is set in the main return that 17 exit of main fan is concentrated in underground, waste air is washed
Wash purification
According to design determining 18 form of spray equipment, installation site and technical requirements, in 17 exit of main fan
Spray equipment 18 is set in main return, washing, purifying is carried out to the waste air for draining into earth's surface through main return.
Claims (10)
1. a kind of main return remodeling method suitable for underground centralized return air system, original ventilating system main return includes most superficial part
Middle section windstone gate (5), deep middle section windstone gate (4), most superficial part middle section windstone gate machine station blower (7), deep return air stone
Door machine station blower (6), returnairshaft (8) and most superficial part middle section return air ingate (9), it is characterised in that: remodeling method includes following
Step:
S1, the design of underground main return modification scheme is carried out
The return air ramp and new return air ingate (14) of design connection most superficial part middle section windstone gate and returnairshaft, return air slope
Road includes the upper arc section (10), straightway (11) and lower arc section (12) being sequentially communicated up and down, is equipped with back on upper arc section
Wind ramp is (13) suitable for reading；
The design connection return air ramp expansion brush section (15) suitable for reading with most superficial part middle section return air ingate；
The platform (19) of design closing return air well shaft；
The type design main fan chamber (16) of underground main fan (17) is installed according to needed for system after transformation；
Spray equipment (18) are designed in main fan exit；
The return air ramp that S2, driving are connected to most superficial part middle section windstone gate
From in most superficial part middle section windstone gate, according to the design of S1, successively under to driving return air ramp upper arc section-straight line
Section-lower arc section；
S3, the new return air ingate of driving are connected to lower arc section and returnairshaft
It tunnels new return air ingate according to the design of S1 from lower arc section and is communicated with returnairshaft；
S4, expand the brush return air ramp windstone gate suitable for reading between most superficial part middle section return air ingate
Most superficial part middle section windstone gate machine station blower is removed, from return air ramp place suitable for reading, to most superficial part middle section return air ingate
Direction carries out expansion brush to most superficial part middle section windstone gate according to the design of S1；Expand after the completion of brush, expands brush Duan Yuxin return air head of the horse
Door, return air ramp constitute spiral main return；
S5, platform for closing return air well shaft is arranged
According to the design of S1, twice are set in the returnairshaft between most superficial part middle section returnairshaft ingate and new return air ingate
Platform；
S6, driving main fan chamber
According to the design of S1, main fan chamber is tunneled in brush section expanding；
S7, installation main fan
According to ventilating system operating condition, in main fan cave indoor location main fan, centralized return air system；In each middle section windstone gate
It is arranged remote auto damper (31), adjusts each middle section return air amount as needed, i.e., transform original system main return as well
The main return of lower centralized return air system constitutes the ventilating system of underground centralized return air system；
S8, installation spray equipment carry out washing, purifying to waste air
According to the design of S1, spray equipment is set in the main return in main fan exit, drains into ground to through main return
The waste air of table carries out washing, purifying.
2. the main return remodeling method according to claim 1 suitable for underground centralized return air system, it is characterised in that: described
Return air ramp, new return air ingate and expand brush section section size it is identical with returnairshaft section, section configuration for basket handle arch or
Skene arch.
3. the main return remodeling method according to claim 1 suitable for underground centralized return air system, it is characterised in that: described
The gradient of return air ramp is less than or equal to 15%.
4. the main return remodeling method according to claim 1 suitable for underground centralized return air system, it is characterised in that: described
New return air ingate is located at below most superficial part middle section return air ingate bottom plate at 10~20m, in new return air ingate and most superficial part
Duan Huifeng ingate opening direction is in 30~90 ° of angles, 3~10m of new return air ingate length.
5. the main return remodeling method according to claim 1 suitable for underground centralized return air system, it is characterised in that: described
Platform is located at most superficial part middle section return air ingate floor level and new return air ingate top elevation top, packet in platform
Include the girder (20) being criss-cross arranged on return air well shaft cross section and secondary beam (21).
6. the main return remodeling method according to claim 5 suitable for underground centralized return air system, it is characterised in that: described
Platform uses steel structure type, and girder connect by threaded fastener and angle steel (24) with secondary beam and to form grid, is equipped on grid
Bed board (23) is connected with the ribbed stiffener (25) that spacing is not more than 0.8m on bed board.
7. the main return remodeling method according to claim 6 suitable for underground centralized return air system, it is characterised in that: girder
It is not less than 120 μm of galvanizing with thickness is coated on secondary beam.
8. the main return remodeling method according to claim 6 suitable for underground centralized return air system, it is characterised in that: returning
Solar (30) are equipped in air shaft, solar closing is laid on above former manway landing plate using thick checkered steel plate, ladder
Cover closure is used at rim of the mouth.
9. the main return remodeling method according to claim 5 suitable for underground centralized return air system, it is characterised in that: described
Platform use reinforced concrete beam and plate formula, girder cut the existing borehole wall of returnairshaft (22) formed hitch (29), girder and time
Beam is arranged using intersecting parallels, armoured concrete slab (26) is formed in girder and secondary beam surrounding casting concrete, in girder and secondary beam
Between armoured concrete slab on reserve lifting manhole (27), between the existing borehole wall of returnairshaft cuts part armoured concrete slab
Casting concrete forms entirety, sets packaged type reinforced concrete cover plate (28) above lifting manhole and is closed.
10. the main return remodeling method according to claim 1 suitable for underground centralized return air system, it is characterised in that: institute
Spray equipment is stated using water spray or spraying form.
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