CN110453618A - A kind of tunnel face Piston Action Wind Dust Improvement method - Google Patents
A kind of tunnel face Piston Action Wind Dust Improvement method Download PDFInfo
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- CN110453618A CN110453618A CN201910659432.6A CN201910659432A CN110453618A CN 110453618 A CN110453618 A CN 110453618A CN 201910659432 A CN201910659432 A CN 201910659432A CN 110453618 A CN110453618 A CN 110453618A
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- wind
- dust
- supporting structure
- piston action
- main supporting
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F7/00—Devices affording protection against snow, sand drifts, side-wind effects, snowslides, avalanches or falling rocks; Anti-dazzle arrangements ; Sight-screens for roads, e.g. to mask accident site
- E01F7/02—Snow fences or similar devices, e.g. devices affording protection against sand drifts or side-wind effects
- E01F7/025—Devices specially adapted for protecting against wind, e.g. screens, deflectors or attenuators at tunnel or lock entrances
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
A kind of tunnel face Piston Action Wind Dust Improvement method, extended outwardly in track two sides and by tunnel face and establish a Piston Action Wind buffer unit, Piston Action Wind buffer unit includes the suppression stratification of wind, the dust-break layer on the outside of main supporting structure on the inside of main supporting structure, and suppression stratification of wind, dust-break layer permutation and combination are distributed on main supporting structure；Main supporting structure is mounted on concrete foundation；It is acted on using the control wind of suppression stratification of wind Windbreak barrier strip, the depositing dust of the ventilation unit of the anti-fugitive dust of dust-break layer acts on, a buffer area is established at tunnel face, so that Piston Action Wind is buffer area is broken, consumption declines low-flow pressure, it is set gradually to tend to be steady, it combines together with atmosphere, reduces gas and take dirt ability, prevent internal diffussion of dust to outside.When can effectively solve the bulk shippings train such as coal, ore and passing through tunnel, the problem that the Piston Action Wind of generation causes the dust pollution of loose unpacked material serious, and cost is low with running cost, can also save a large amount of costs of labor.
Description
Technical field
The invention belongs to environment protection fields.It is mainly used for freight rail tunnel face periphery dust pollution improvement, and in particular to one
Kind tunnel face Piston Action Wind dust pollution administering method.
Background technique
The dust pollution problem generated in the loose cargo transports such as Railway Coal, ore has caused the height of environmental protection administration
Concern, is especially loaded with the bulk shippings train such as coal, ore, and as the train moves into the tunnel, air is compressed in front of train,
Pressure sharply increases, and generates compressed air stream；When the tailstock of train enters tunnel, air has little time to supplement in tunnel, and pressure is anxious
It falls sharply low, forms expansion (suction) air-flow；Form Piston Action Wind.Compressed air stream, expanded gas flow, turbulent repeated action in tunnel
In train, the coal surface in compartment is blown afloat, fugitive dust in tunnel is caused, the Piston Action Wind for carrying a large amount of dirt reaches tunnel exit
When pressure strongly reduce, gas volume rapid expanding is fan-shaped to spread to periphery rapidly, and production when train tail goes out tunnel face
Dust laden air in tunnel is largely taken out of, is diffused into surrounding enviroment by raw swabbing effect, causes large-scale dust pollution.
Solve coal, when the bulk shippings train such as ore passes through tunnel caused by surrounding enviroment dust pollution, have become
Urgent problem to be solved at present.Existing freight rail tunnel face periphery is not processed this, cannot solve the above problems.
Summary of the invention
The present invention provides a kind of tunnel face Piston Action Wind dust pollution administering methods, it is therefore intended that can effectively solve coal
When the bulk shippings train such as charcoal, ore passes through tunnel, the problem that the Piston Action Wind of generation causes the dust pollution of loose unpacked material serious,
Cost is low with running cost, can also save a large amount of costs of labor.
In order to achieve the above objectives, the present invention uses following solution:
A kind of tunnel face Piston Action Wind Dust Improvement method, it is characterized in that being extended outwardly in track two sides and by tunnel face and establishing one
Piston Action Wind buffer unit, Piston Action Wind buffer unit include being located at the suppression stratification of wind on the inside of main supporting structure, being located at outside main supporting structure
Suppression stratification of wind, dust-break layer permutation and combination are distributed on main supporting structure by the dust-break layer of side；Main supporting structure is mounted on coagulation soil matrix
On plinth.
Dust-break layer is installed to thin segmentation from bottom to top and along direction of traffic by close on the outside of main supporting structure, and suppression stratification of wind exists
It is installed from bottom to top and along direction of traffic by close to thin segmentation on the inside of main supporting structure, realizes that air pressure, air-flow are descending
Gradient decaying, makes Piston Action Wind in the consistent with ambient wind of the regions transform of buffer unit.
Reinforced concrete foundation according to the span of main supporting structure, height, stress condition and design, material use C35 steel
Reinforced concrete is integrally formed foundation bolt with basis, main supporting structure passes through column by embedding anchor bolts when casting concrete
Sole is connect with foundation bolt.
Main supporting structure uses rod piece grid structure, and grid structure uses just putting quadrangular pyramid structure.Rod member for grid mutually it
Intermediate node uses bolted spherical node, and rod member for grid uses ratio-frequency welded tube or seamless pipe, and bolt uses No. 45 steel.Space can also be used
Tube truss structure, is spliced using profile class material, and space pipe truss structure node then generallys use the tubular joint directly welded
As tie point.
The suppression stratification of wind includes Windbreak barrier strip, T-shaped piece, barrier end front plate, barrier end back splint, c-type rubber block.
T-shaped piece is set on lower edge bolted spherical node on the inside of the grid structure, is arranged at a certain distance along direction of traffic
One column, T-shaped piece are connect with lower edge bolted spherical node on the inside of grid structure by fastener, and barrier end front plate passes through bolt and T
The connection of type part, barrier end back splint are bolted with a barrier end front plate, and c-type rubber block and air partition item are clipped in barrier item
Between end back splint and barrier end front plate, c-type rubber block will hinder an end front plate, barrier end rear plate jam-packed,
And by Windbreak barrier strip and both ends T-shaped piece jam-packed.
T-shaped piece by longitudinal steel plate with it is lateral steel plate is T-shaped is welded, longitudinal steel plate is overlapped weldering with transverse direction steel plate middle line
It connects, remains for the mounting hole of installation inside suppression stratification of wind on longitudinal steel plate in advance.
Windbreak barrier strip is C-shaped, and Windbreak barrier strip uses makrolon material.
Hindering an end front plate and a barrier end back splint is by forging and forming.
It is oval to hinder an end front plate, barrier end back splint is C-shaped, and a barrier end front plate is reserved with and T-type
The bolt connecting hole of part connection, barrier end front plate and a barrier end back splint are equipped with mounting ear, the reserved installation of mounting ear
Hole can be bolted.
The outer shape of c-type rubber block is C-shaped, and material uses ethylene propylene diene rubber, has slot, Windbreak barrier in the middle part of c-type rubber block
Item is inserted into slot, has round rubber raised on the outside of c-type rubber block.
Outer layer dust-break layer includes the ventilation unit of anti-fugitive dust, T-type supporting plate, purlin, tapping screw.
The purlin includes main purlin, secondary purlin；Main purlin is transversely mounted on T-type supporting plate, the secondary longitudinally mounted master of purlin
On purlin.Main purlin and time purlin form frame.
One column T-type supporting plate is set at a certain distance along direction of traffic in rack bolt sphere of winding up, T-type supporting plate passes through card
Part and bolt are connect with bolt sphere in main supporting structure, and purlin is connect by bolt with T-type supporting plate, and the ventilation unit of anti-fugitive dust is logical
It crosses tapping screw to be installed on time purlin, main supporting structure is winded up, and outer layer is whole to be closed.
T-type supporting plate is formed by longitudinal steel plate and lateral steel plate vertical welding, and longitudinal steel plate is overlapped weldering with lateral steel plate middle line
It connects, lateral steel plate remains for installing in advance the mounting hole of main purlin, secondary purlin.
Purlin uses high-frequency welding galvanizing square steel, material Q235B；Purlin thickness >=2.5mm.Purlin galvanizing is zinc-plated
Amount is no less than 350g/ ㎡.
The ventilation unit of anti-fugitive dust is using a kind of resistance dirt ventilator disclosed in China Patent No. ZL201820326434.4.
The working principle of the invention: establishing a buffer area at tunnel face, is acted on using the control wind of lower layer's suppression stratification of wind, control
Train Piston Action Wind processed air pressure at tunnel exit cannot strongly reduce, and return to a part of Piston Action Wind, and taking dirt air cannot
Enough diffusions rapidly will take the control of dirt air inside equipment, and the suppression wind for recycling lower layer's suppression stratification of wind Windbreak barrier strip mutual is made
With by mutual collision, the rubbing action of air-flow, consuming its kinetic energy, reduce it and take dirt ability, recycle the anti-of upper layer dust-break layer
The wind deflector inclined-plane of the ventilation unit of fugitive dust is to the collecting action of air-flow, so that the semiclosed sky that the ventilation unit of anti-fugitive dust surrounds
Interior pressure becomes larger, to prevent internal diffussion of dust to outside.
The buffer area dust-break layer, press down stratification of wind setting be arranged from the near to the distant by close to thin gradual change in tunnel face so that
Piston Action Wind makes it gradually tend to be steady, combines together with atmosphere, drop buffer area is broken, consumption declines low-flow pressure
Low gas takes dirt ability, reaches depositing dust purpose.
When the present invention can effectively solve the bulk shippings train such as coal, ore and pass through tunnel, the Piston Action Wind of generation causes
The serious problem of the dust pollution of loose unpacked material, and cost is low with running cost, can also save a large amount of costs of labor.
Detailed description of the invention
Fig. 1 is the facade installation diagram of buffer unit in the present invention；
Fig. 2 is the exterior facades schematic diagram of buffer unit in the present invention；
Fig. 3 is the interior facade schematic diagram of buffer unit in the present invention；
Fig. 4 is the local scheme of installation of buffer unit in the present invention；
In figure, the basis 1-, 2- main supporting structure, 3- dust-break layer, 4- suppression stratification of wind, 21-T type supporting plate, the ventilation list of the anti-fugitive dust of 31-
Member, the zinc-plated tapping screw of 32-, 33- purlin, 41-T type part, 42- hinder an end back splint, 43-C type rubber block, 44- Windbreak barrier
Item, 45- hinder an end front plate, 46- connection bolt.
Specific embodiment
By taking double track tunnel as an example, the wide 12m in tunnel, high 8.6m.The main support of tunnel face Piston Action Wind dust pollution controlling device
Structure rack span 16m, is highly 13m, extends 60m to outside tunnel from tunnel face.
Main supporting structure is mounted in concrete foundation, and main supporting structure is mounted in concrete foundation, main supporting structure
Outside is installed by dust-break layer, inside installation suppression stratification of wind.
Dust-break layer is installed along direction of traffic from bottom to top on the outside of main supporting structure, presses down stratification of wind on the inside of main supporting structure
From bottom to top along direction of traffic install, outer layer dust-break layer and internal layer suppression stratification of wind main supporting structure along direction of traffic use by
It is close to be arranged to thin subsection gradual form.
6 sections are specifically divided into, every segment length is 10m.It is respectively in order using the front of train direction of travel as first segment
Two sections, third section, the 4th section, the 5th section, the 6th section.
The ventilation unit of the anti-fugitive dust of first segment dust-break layer is abound with without spacing, is arranged in rack and is winded up outer layer；Press down in stratification of wind
Adjacent Windbreak barrier strip center is apart 380mm installation, is evenly arranged on rack lower edge internal layer.
The ventilation unit of the anti-fugitive dust of second segment dust-break layer is abound with without spacing, is arranged in rack and is winded up outer layer；Press down in stratification of wind
Adjacent Windbreak barrier strip center is installed at a distance of 430mm, is evenly arranged on rack lower edge internal layer.
The ventilation unit of the anti-fugitive dust of third section dust-break layer is abound with without spacing, is arranged in rack and is winded up outer layer；Press down in stratification of wind
Adjacent Windbreak barrier strip center is installed at a distance of 480mm, is evenly arranged on rack lower edge internal layer.
The ventilation unit center of adjacent anti-fugitive dust is apart 2150mm installation in 4th section of dust-break layer, is evenly arranged on rack and winds up
Outer layer presses down adjacent Windbreak barrier strip center in stratification of wind and installs at a distance of 580mm, is evenly arranged on rack lower edge internal layer.
The ventilation unit center of adjacent anti-fugitive dust is installed at a distance of 2250mm in 5th section of dust-break layer, is evenly arranged on rack and is winded up outside
Layer；Press down adjacent Windbreak barrier strip center in stratification of wind to install at a distance of 680mm, is evenly arranged on rack lower edge internal layer.
The ventilation unit center of adjacent anti-fugitive dust is installed at a distance of 2300mm in 6th section of dust-break layer, is evenly arranged on rack and is winded up outside
Layer；Press down adjacent Windbreak barrier strip center in stratification of wind to install at a distance of 780mm, is evenly arranged on rack lower edge internal layer.
Mounting seat of two rows of reinforced concrete foundations as whole equipment, each basis spacing are built in track two sides
8m, material use C35 armored concrete, and by foundation bolt M20 when casting concrete, length is that 1200mm is pre-buried, make lower margin spiral shell
Bolt is integrally formed with basis, and top grid structure is connect by heel slab with foundation bolt, realizes top grid structure and basis
Connection.
The just putting quadrangular pyramid arch grid structure structure that main supporting structure uses rod piece to constitute, outer profile is cylindrical surface, rack
The mutual node of rod piece uses bolted spherical node, and rack thickness is disposed as 1.5m.
Rod member for grid material includes: ratio-frequency welded tube or seamless pipe, bolt sphere: No. 45 steel；High-strength bolt, pin: 20MnTiB steel or
40Cr steel；> M24 or more uses 40Cr steel；Conehead and sealing plate: Q235B steel is selected；Sleeve (nut): Q235B(≤M33), No. 45
Steel (> M33) steel forgings, grid structure anti-corrosion is using paint anti-corrosion.
Main supporting structure can also be the truss structure being made of rod piece, is also possible to fashioned iron and is bent the steel being made
Frame.
Suppression stratification of wind includes Windbreak barrier strip, T-shaped piece, barrier end front plate, barrier end back splint, c-type rubber block.
One column T-shaped piece, spiral shell in T-shaped piece and main supporting structure are set every 4m along direction of traffic in rack lower edge bolt sphere
Bolt ball is connect by fastener with bolt mode, and barrier end front plate passes through reserved bolt hole by bolt and connect with T-shaped piece,
Barrier end back splint is bolted with a barrier end front plate, and c-type rubber block and air partition item are clipped in two clamping plates
Between, Windbreak barrier strip installation is completed, c-type rubber block plays elastic filling, will hinder the forward and backward clamping plate jam-packed in an end, by Windbreak barrier strip
With both ends T-shaped piece jam-packed.
T-shaped piece is welded by two blocks of steel plates, lateral plate size 400*170*12mm, longitudinal plate size 400*150*
12mm, the side longitudinal steel plate 400mm are overlapped welding with lateral steel plate 400mm middle line, reserve installation on longitudinal steel plate among T-shaped piece
Hole is installed for Windbreak barrier strip.
Windbreak barrier strip uses 8mm thickness PC force-bearing plate, and raw material are makrolon material, and external form uses arc-shaped external form
Design, molding such as c-type, length standard length is 2.5m, width 212mm, height 86mm.
Barrier end front plate and a barrier end back splint are matching components, and forging and forming, barrier end front plate is in ellipse
Circle, barrier end back splint is C-shaped, and size cooperates, and forms the long 340mm of standard component, wide 65mm, pre- on oval web
There are mounting holes, can be bolted with T-shaped piece, and barrier end front plate and a barrier end back splint have installation ear, in advance
Diameter 12mm mounting hole is stayed, can be bolted, c-type rubber block and air partition item are clipped among two clamping plates.
C-type rubber block outer diameter 240mm, internal diameter 184mm, wide 60mm, there is 8mm slot at middle part, can inject 8mm Windbreak barrier strip
It goes, there are radius 6mm rubber bumps on internal-and external diameter surface.
Dust-break layer includes the ventilation unit of anti-fugitive dust, T-type supporting plate, purlin, zinc-plated tapping screw.
Rack wind up bolt sphere along direction of traffic every 4m be arranged a column T-type supporting plate, T-type supporting plate pass through fastener and spiral shell
Bolt is connect with bolt sphere in main supporting structure, and purlin is bolted to be connect with T-type supporting plate, at a distance of 4m between each main purlin, is prevented
The ventilation unit of fugitive dust is installed on time purlin by zinc-plated tapping screw.
A kind of resistance dirt ventilator of equipment, patent No. ZL201820326434.4 can be used in the ventilation unit of anti-fugitive dust.Ontology
Long 5m wide 2m.
T-type supporting plate is welded by two blocks of steel plates, material Q235B, lateral plate size 400*170*12mm, Zong Xianggang
Board size 400*150*12mm, the side longitudinal steel plate 400mm are overlapped welding with lateral steel plate 400mm middle line, on T-shaped piece transverse direction steel plate
Reserving installation hole, the installation for main purlin, secondary purlin.
Purlin uses high-frequency welding galvanizing square steel, material Q235B；Purlin thickness >=2.5mm.Purlin galvanizing is zinc-plated
Amount is no less than 350g/ ㎡.All purlin prefabrications, scene are connected using galvanized bolt, and use pre-punched hole, do not allow to weld
It connects.
It will be apparent to those skilled in the art that can make various other according to the above description of the technical scheme and ideas
Corresponding change and deformation, and all these changes and deformation all should belong to the protection scope of the claims in the present invention
Within.
Claims (3)
1. a kind of tunnel face Piston Action Wind Dust Improvement method, it is characterized in that being extended outwardly in track two sides and by tunnel face and establishing one
A Piston Action Wind buffer unit, Piston Action Wind buffer unit include suppression stratification of wind on the inside of the main supporting structure, are located at main supporting structure
Suppression stratification of wind, dust-break layer permutation and combination are distributed on main supporting structure by the dust-break layer in outside；Main supporting structure is mounted on concrete
On basis；Dust-break layer is installed to thin segmentation from bottom to top and along direction of traffic by close on the outside of main supporting structure, presses down stratification of wind
It is acted on from bottom to top and along direction of traffic by close to segmentation installation is dredged using the control wind of suppression stratification of wind on the inside of main supporting structure,
Control train Piston Action Wind air pressure at tunnel exit cannot strongly reduce, and return to a part of Piston Action Wind, take dirt air not
It can spread rapidly, the control of dirt air will be taken inside buffer unit, the suppression wind for recycling suppression stratification of wind Windbreak barrier strip mutual
Effect consumes its kinetic energy by mutual collision, the rubbing action of air-flow, reduces it and takes dirt ability, the anti-of dust-break layer is recycled to raise
The wind deflector inclined-plane of the ventilation unit of dirt is to the collecting action of air-flow, so that the hemi-closure space that the ventilation unit of anti-fugitive dust surrounds
Interior pressure becomes larger, to prevent internal diffussion of dust to outside, realizes the descending gradient decaying of air pressure, air-flow, makes
Piston Action Wind changes consistent with ambient wind in buffer unit region.
2. a kind of tunnel face Piston Action Wind Dust Improvement method according to claim 1, it is characterized in that suppression stratification of wind includes Windbreak barrier
Item, T-shaped piece, barrier end front plate, barrier end back splint, c-type rubber block；T-shaped piece and main supporting structure by fastener with
It is bolted, barrier end front plate is connect by bolt with T-shaped piece, and barrier end back splint passes through with a barrier end front plate
It is bolted, c-type rubber block and air partition item is clipped among two clamping plates, complete Windbreak barrier strip installation, barrier end is forward and backward
Clamping plate jam-packed, by Windbreak barrier strip and both ends T-shaped piece jam-packed.
3. a kind of tunnel face Piston Action Wind Dust Improvement method according to claim 1, it is characterized in that dust-break layer includes anti-fugitive dust
Ventilation unit, T-type supporting plate, purlin, T-type supporting plate connect by fastener and bolt with main supporting structure, and purlin passes through bolt company
It connects and is connect with T-type supporting plate, the ventilation unit of anti-fugitive dust is installed on purlin by zinc-plated tapping screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910659432.6A CN110453618A (en) | 2019-07-22 | 2019-07-22 | A kind of tunnel face Piston Action Wind Dust Improvement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910659432.6A CN110453618A (en) | 2019-07-22 | 2019-07-22 | A kind of tunnel face Piston Action Wind Dust Improvement method |
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| Publication Number | Publication Date |
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| CN110453618A true CN110453618A (en) | 2019-11-15 |
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| CN201910659432.6A Pending CN110453618A (en) | 2019-07-22 | 2019-07-22 | A kind of tunnel face Piston Action Wind Dust Improvement method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060002772A1 (en) * | 2004-06-30 | 2006-01-05 | Tabler Ronald D | Apparatus and method for efficiently fabricating, dismantling and storing a porous tubular windblown particle control device |
| CN200978389Y (en) * | 2006-12-11 | 2007-11-21 | 柳州欧维姆机械股份有限公司 | Wind screening brattice |
| CN101487357A (en) * | 2008-12-25 | 2009-07-22 | 青岛科技大学 | Wind-proof dust-suppression method for open bulk materials stacking field, and its wind-proof dust-suppression net and use |
| CN104695344A (en) * | 2015-03-29 | 2015-06-10 | 杜秀枫 | Windproof dust inhibiting net |
| CN208633393U (en) * | 2018-03-09 | 2019-03-22 | 山西尚风科技股份有限公司 | A kind of anti-flour dust overflow skylight of totally-enclosed coal bunker |
-
2019
- 2019-07-22 CN CN201910659432.6A patent/CN110453618A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060002772A1 (en) * | 2004-06-30 | 2006-01-05 | Tabler Ronald D | Apparatus and method for efficiently fabricating, dismantling and storing a porous tubular windblown particle control device |
| CN200978389Y (en) * | 2006-12-11 | 2007-11-21 | 柳州欧维姆机械股份有限公司 | Wind screening brattice |
| CN101487357A (en) * | 2008-12-25 | 2009-07-22 | 青岛科技大学 | Wind-proof dust-suppression method for open bulk materials stacking field, and its wind-proof dust-suppression net and use |
| CN104695344A (en) * | 2015-03-29 | 2015-06-10 | 杜秀枫 | Windproof dust inhibiting net |
| CN208633393U (en) * | 2018-03-09 | 2019-03-22 | 山西尚风科技股份有限公司 | A kind of anti-flour dust overflow skylight of totally-enclosed coal bunker |
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Application publication date: 20191115 |