CN102561781B - Semi-closed, environment-friendly, air-guide and dust suppression shed for bulk products - Google Patents
Semi-closed, environment-friendly, air-guide and dust suppression shed for bulk products Download PDFInfo
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- CN102561781B CN102561781B CN201210038543.3A CN201210038543A CN102561781B CN 102561781 B CN102561781 B CN 102561781B CN 201210038543 A CN201210038543 A CN 201210038543A CN 102561781 B CN102561781 B CN 102561781B
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Abstract
The invention provides a semi-closed, environment-friendly, air-guide and dust suppression shed for bulk products, which structurally comprises overall-span main structural frameworks formed by connectedly fitting a plurality of symmetrical curve segments on two sides with middle curve segments, wherein each three-segment curve structure is formed by connectedly fitting curve segments on two sides with a middle curve segment. Overall-span closed areas are disposed at certain intervals at two ends of the shed in the longitudinal direction, overall-span closed roofs forming a top shed are arranged at the overall-span closed areas, and an air guide structure with an open middle and two closed ends is reserved between each two adjacent overall-span closed roofs in the longitudinal direction. The semi-closed, environment-friendly, air-guide and dust suppression shed for bulk products is high in coal storage capacity, simple in process flow, high in distribution ease and fast in speed, and meets the requirements of fire control and explosion proofing, operation environment is improved, and work conditions are good. Compared with similar-scaled full-closed sheds, the semi-closed, environment-friendly, air-guide and dust suppression shed for bulk products has the main structure steel consumption reduced by 35-45%, and enclosure structural area reduced by 40-50%. Compared with common windproof net structures, the semi-closed, environment-friendly, air-guide and dust suppression shed for bulk products has the improved dust suppression effect and improved surroundings and meets the requirement of environmental protection.
Description
Technical field
The present invention relates to a kind of storage structures, particularly a kind of semiclosed environmental protection type wind water conservancy diversion dust suppression bulk goods material shed.
Background technology
Coal is China's main energy sources, produces every year and consume 2,300,000,000 tons.Because coal resources are composed and are deposited with the dislocation layout of energy-consuming region and formed the basic configuration of transporting the coal in the North to the South, transferring coal from the west to the east.For this reason, China has successively built up the Qun Dynasty and north yellow two large Coal Transport passages, and coal is transported to northern ports dress through railway and launches a ship, and transports east and southeast to.Coal, as Chinese basic energy resource, will be difficult to quite over a long time in future change take coal as main energy resource structure.China is also iron ore consumption and import big country, every year need be from approximately 600,000,000 tons of state's import such as Australian, Brazilian, and along with economic fast development, this Transportation Pattern is also by long-term sustainable existence.
Harbour is the aortic hinge of communications and transportation, is the interface of water transportation and land transportation.At harbour, the feature of loose unpacked material transportation is to import and export on a big scale, and emphasis is safety and high efficiency, therefore substantially adopts automation, specialized transportation technology.And the loose unpacked materials such as coal, ore outdoor the storing up of many employings at present.Along with the fast development of China's economy, environmental issue becomes increasingly conspicuous, and how to administer outdoor the storing up of the loose unpacked material such as coal, ore and produces the environment pollution that causes and mentioned the height that involves the interests of the state and the people.
1, the loose unpacked material such as coal, ore is stored up mode present situation:
The loose unpacked material such as coal, the ore mode of storing up can be divided into outdoor store up and two large classes are stored up in sealing.The loose unpacked materials such as extensive coal, ore are stored up most open storage grounds that adopt, and the application when less of general volume of the circular flow is stored up in sealing.
Open storage ground application scenario
Start the seventies in last century, China successively in PORT OF QINHUANGDAO, Qingdao Harbour, PORT OF RIZHAO, PORT OF TIANJIN, PORT OF HUANGHUA, Jing Tanggang, port, prince wife Cao pasture built the loose unpacked material such as Large-scale Coal, ore staithe, the pattern that stockyard technique all adopts open storage ground to store up, on stockyard, arrange large-scale heap, feeding equipment and conveyor, store up and feeding ship-loading operation to complete the discharging of the loose unpacked material such as coal, ore.
PORT OF QINHUANGDAO coal five phases engineering design year handling capacity is 5,000 ten thousand tons, and the capacity of storing up of Coal Yard is 4,000,000 tons, open storage ground area 770,000 m
2.Cao Fei pasture coal wharf Starting Project designed output is 5,000 ten thousand tons/year, stockyard North and South direction length 1192m
2, East and West direction width 612m, arranges 8 Coal Yards altogether.Storage space 72.95 ten thousand m
2, 398.2 ten thousand tons of volume of cargo in storages., there is serious environment pollution in outdoor the storing up of the most employing of loose unpacked material such as at present extensive coal, ore.
2, open storage ground anti-wind net applicable cases
For administer outdoor store up to produce caused serious environment pollution.Over nearly 30 years, the countries such as Japan, the U.S., Australia, Britain are studied anti-wind net dust control technology.Japan, from 20 century 70s, has been used anti-wind net in harbour Coal Stack Yard in succession, and formulated outdoor coal yard equipment prevent the coal dust method summary of dispersing.American National Environmental Protection Agency carried out concluding to the relevant research work of anti-wind net in 1986 sums up, and has proposed the use of anti-wind net at the outdoor coal yard of the U.S..The dustproof middle-size and small-size outdoor coal yard successful Application abroad of anti-wind net also obtains good dust-proof effect.
Chinese large-sized and ultra-large type open storage ground at present, main dust suppression is spray water, sprays dust suppressant, covers Air Filter etc., has certain anti-dust effect, but still can not solve well the pollution problem of dust to environment.Along with improving constantly of environmental requirement, the environmental issue of open storage ground becomes increasingly conspicuous, and many large-scale and ultra-large type stockyards begin one's study and increase wind-proof dust-suppression net and pollute to reduce coal dust.
2006, South Sinkiang, PORT OF TIANJIN bulk goods logistics center the 3rd tipple's anti-wind net built up, and adopted single-layer flexible dust-suppression net, high 9m, overall length 2615m.In July, 2008, three phase of PORT OF QINHUANGDAO coal anti-wind net engineering comes into operation, and anti-wind net is to build overall length 1750m, high 23m around three phase of coal stockyard.In the end of the year 2008, Cao Fei pasture coal wharf builds up overall length 2608m anti-wind net engineering, is mainly distributed in east, south, north three sides of Coal Yard.Wherein, north side dust suppression net height 17m, long 607m, the high 23m in east side, long 1361m, the high 23m in southern side, long 640m, scale is current largest domestic.2008, Jing Tanggang entrusted units concerned to carry out the experimental study of dust-proof effect in conjunction with test section.According to achievement in research, after construction anti-wind net, have compared with remarkable effect reducing pollution caused by coal dust, for the construction of Coal Stack Yard anti-wind net provides scientific basis.In April, 2009, stockyard anti-wind net is built at coal in 32#～34# berth, and wherein anti-wind net length in east side is 1501m, net height 24m; West side and north side anti-wind net total length are 2097m.
The construction of above-mentioned anti-wind net engineering, has played certain effect to reducing pollution caused by coal dust, different with middle-size and small-size open storage ground, because storage space is excessive, in the time that heap field length exceedes 10 times of anti-wind net height, wind is crossed after anti-wind net, to undesirable apart from anti-wind net dump wind-proof dust-suppression effect far away.
3, the application scenario in sealing stockyard
The environmental practice that every profession and trade is taked bulk storage yard is both at home and abroad not quite similar.The general measure that solves more effectively, thoroughly the bulk storage yard problem of environmental pollutions such as conventional coal, ore is that the bulk goods such as coal, ore sealing heap is existed in certain space, in case flour dust overflow.Colliery generally adopts tower silo to store up coal; Power plant extensively adopts tower silo, hemisphere storehouse to store up coal, also has part power plant to adopt large storehouse to store up coal.Principal mode has three kinds of large storehouse, hemisphere storehouse and tower siloes.
China's ultra-large type coal storage silo is the earliest 2 30,000 tons of coal separation plants, colliery, Yungang Grottoes storage coal silo that is established in 1993,3 the 30000 tons of coal storage silos of Beijing Shijingshan Power Plant that build up for 1998, the group storehouse that power plant's storage coal measures system is made up of 3 30,000 tons of silos, merge with 5 10,000 tons of silos of first phase, form the storage coal ability that is total to ten thousand tons of l4.After this build up or also comprise the 30000 tons of silos in 2 of Nayong Power Plants, 3 30,000 tons of silos of little dragon's pool power plant, 2 30,000 tons of silos of Harbin Heating and Power Plant, 10 30,000 tons of silos of Li Gang power plant etc. at the large-scale and ultra-large type coal storage silo of building.
But in harbour industry, sealing heap coal storage is still in the starting stage of fumbling.Reason is:
(1) the sealing such as the applied dome-type of the industry such as power plant, colliery storehouse, silo, large-scale sealing coal canopy coal storage system, small scale, quantity is few, technological process is simple, kind is single, efficiency is less demanding.The dome-type storehouse of largest domestic is 120 meters of diameters at present, 200,000 tons of coal storages; The large-scale sealing coal canopy 45600m of Guangdong Huizhou power plant
2; 4.5 ten thousand tons of maximum monotubular storehouse, colliery, Pingshou capacity, 24 maximum 30,000 tons of silo groups of CCCC First Harbor Consultants Co., Ltd.'s design, can coal storage 720,000 tons also in construction.
(2) the cost that dome-type storehouse, silo, large-scale sealing coal canopy are built is high, invests excessive.
(3) after coal closed is stockpiled and stored, operating environment is poor, and condition of work is severe.
(4) seal coal canopy area and be restricted, volume of cargo in storage is few, and dieseling occurs coal saving sometimes, and fireproof performance is poor, and sealing coal canopy is difficult to meet fire-fighting and requirement of explosion proof.
(5) in dome-type storehouse, silo, large-scale sealing coal canopy, Coal rank can not leave in a sealing coal storage system, not high for many kinds coal ultra-large type Coal Stack Yard utilization rate.
And harbour is as the hinge of iron sea through transport, because the annual freight volume of specialized coal harbour reaches tens million of tons, must adopt ultra-large type, many coals bunkerage, it needs safely, expeditiously coal rapid transport is gone out, and also will possess the logistics functions such as coal blending simultaneously, and material is imported and exported on a big scale, enchancement factor is many, system relative complex.Consider the scale of traffic water transport industry port construction and the problem of investment cost, Coal Yard adopts the accumulating pattern of sealing to be widely applied aspect harbour always.
Sealing bunkerage security monitoring present situation:
Because the annual freight volume of specialized coal harbour reaches tens million of tons, must adopt ultra-large type bunkerage.Scale is larger, and its security requirement is also just higher.At present, the large-scale and ultra-large type of domestic every profession and trade sealing coal storage facility, especially stores coal silo and also exists some at secure context and have problem to be solved, and safety monitoring system is perfect not etc.As store coal spontaneous combustion phenomenon ubiquity, the related factor of storage coal spontaneous combustion is many-sided, the coal of wherein storing and carry out coal and enter before storehouse in the outdoor time of depositing, coal volatile ingredient ratio is higher, the probability of spontaneous combustionof coal is larger, the outdoor time of depositing is longer, and the degree of oxidation is higher, enters just easier spontaneous combustion behind storehouse.At present sealing bunkerage still exists many hidden danger, trace it to its cause, be mainly domestic up to now, its major function be mostly cushion, mixed coal is main, total capacity is little, storage period is short, all the not measure such as mature consideration burn-proof and explosion prevention from designing.
Because totally-enclosed material shed exists some problems, as: there is dieseling in coal saving, fireproof performance poor sometimes, is difficult to meet fire-fighting and requirement of explosion proof; Sealing coal canopy area is restricted, and small scale, volume of cargo in storage are few, and Coal rank can not leave in a sealing coal storage system, not high for many kinds coal ultra-large type Coal Stack Yard utilization rate; Technological process is simple, efficiency is low; Operating environment is poor, and condition of work is severe; The cost of building is high, and investment is large.And general anti-wind net structure also has problems: anti-dust effect is general, after long-play, easily form larger dust diffusion, pile up at periphery, contaminated environment, can not reach higher environmental requirement.
Along with the fast development of China's economy, environmental issue becomes increasingly conspicuous, how to administer the loose unpacked material such as coal, ore produce the environment pollution causing mentioned involve the interests of the state and the people height, meet environmental requirement, safe and reliable in the urgent need to one, utilization rate height is saved again the bulk cargo of investment and is stored up facility.
Summary of the invention
For the problem of above-mentioned existence, the object of this invention is to provide a kind of semiclosed environmental protection type wind water conservancy diversion dust suppression bulk goods material shed, be beneficial to solve multiple bulk material and store up problem, meet environmental requirement, safe and reliable, utilization rate height is saved again cost of investment.
For achieving the above object, the technical solution used in the present invention is to provide a kind of semiclosed environmental protection type wind water conservancy diversion dust suppression bulk goods material shed, this bulk goods material shed is supported on basis, ground, wherein: this material shed structure includes whole across agent structure skeleton and be supported on basis, ground, three sections of curvilinear structures part kisses of the whole monosymmetric curved section across agent structure skeleton and middle part curved section connect and form, and curved section lower end, both sides arranges a straight vertical line segment and is connected with basis;
This bulk goods material shed is at longitudinal two ends and longitudinally arrange whole across closed area at interval of certain distance, whole across closed area be provided with form ceiling whole across sealing roofing, open wide closed at both ends structure at longitudinal every two whole middle parts that wind is carried out to water conservancy diversion that are between across sealing roofing, forming horizontal span scope is the bulk goods material shed that 90～144m, longitudinal length scope are 592～1216m.
Effect of the present invention is to use this material shed can meet that coal storage is large, technological process is complicated, circulation is strong, fireballing bulk cargo stock yard requirement, meets fire-fighting, requirement of explosion proof, and operating environment improves, good operation conditions.Compare with the totally-enclosed bulk goods material shed of scale such as similar, through adopting the computational analysis of MSGS spatial mesh structure engineering analytical procedure, reduce steel using amount 35～45% than the totally-enclosed material shed agent structure of same size, reduce space enclosing structure area 40～50%.Semiclosed material shed form is due to all negative pressuren zones in air-flow, material shed inside, and material shed top is arc arrangement form, to laterally the wind comes from, anti-dust effect can reach 100%, to longitudinal major axis the wind comes from take water conservancy diversion measure after anti-dust effect can reach 93～98%, even if having a small amount of airborne dust also can deposit along material shed inwall, thereby can not pollute surrounding enviroment.Can be widely used in the loose unpacked material stocking systems such as harbour, mine, steel mill, the newly-built coal of power plant, ore, can be applicable to the transformation of the loose unpacked material open-air storage systems such as harbour, mine, steel mill, the existing coal of power plant, ore, have a extensive future.
Accompanying drawing explanation
Fig. 1 is semiclosed environmental protection type wind water conservancy diversion dust suppression bulk goods material shed ceiling schematic diagram of the present invention;
Fig. 2 is three shaped form material shed ceiling ends of the present invention and middle part enclosure portion schematic diagram;
Fig. 3 is that three shaped form material shed ceilings of the present invention are opened wide part schematic diagram;
Fig. 4 is that three shaped form material shed ceilings of the present invention are opened wide whole across agent structure part schematic diagram;
Fig. 5 is semi-circular material shed ceiling end of the present invention and middle part enclosure portion schematic diagram;
Fig. 6 is that semi-circular material shed ceiling of the present invention is opened wide part schematic diagram;
It is whole across agent structure part schematic diagram that Fig. 7 is that semi-circular material shed ceiling of the present invention is opened wide;
Fig. 8 is of the present invention whole across main body load-carrying members folding and expanding formula overall plan view;
Fig. 9 is of the present invention whole across main body load-carrying members folding and expanding formula entirety sectional drawing;
Figure 10 is the verge board that bulk goods material shed of the present invention arranges different ventilative rates, and under 20m/s effect, ventilative rate contrasts figure with stockpile surface maximum wind velocity;
Figure 11 is bulk goods material shed of the present invention windward side space enclosing structure 30% ventilative rate wind scorpion figure;
Figure 12 be bulk goods material shed of the present invention under the effect of 20m/s wind speed, open distance and stockpile surface maximum wind velocity control curve figure;
Figure 13 is that bulk goods material shed ceiling structure 50% of the present invention opens wide rate wind design sketch;
Figure 14 is the different outline drawings of bulk goods material shed ceiling of the present invention;
Figure 15 be bulk goods material shed of the present invention under the effect of 20m/s wind speed, the surperficial maximum wind velocity control curve of the corresponding stockpile of different profiles figure.
In figure:
1, closure plate district 2, the plate district 3 that punches, closed stream lending plate district 4, whole across agent structure skeleton
5, ceiling is opened wide part district 6, whole across sealing roofing
7, space bracket 8, local load-carrying members skeleton
The specific embodiment
By reference to the accompanying drawings the structure of semiclosed environmental protection type wind water conservancy diversion dust suppression bulk goods material shed of the present invention is illustrated.
Semiclosed environmental protection type wind water conservancy diversion dust suppression bulk goods material shed of the present invention, by the setting parallel works that keeps out the wind, adopt the technology of Long-Span Steel Space Structures, use aerodynamic principle to reduce the wind speed of incoming flow wind, lose to greatest extent the kinetic energy of incoming flow wind, avoid the obvious eddy current of incoming flow wind, reduce the turbulivity of wind, prevent flying upward of dust and reach the object that has reduced dirt.
Semiclosed environmental protection type wind water conservancy diversion dust suppression bulk goods material shed of the present invention, this bulk goods material shed is supported on basis, ground, this material shed structure includes multiple monosymmetric curved sections and curved section part kiss in middle part connects form whole across agent structure skeleton 4, wholely be supported on basis, ground across agent structure skeleton 4, described both sides curved section radius of curvature is 20～50m, middle part curved section radius of curvature is 80～120m, three sections of curvilinear structures part kisses connect and form, and curved section lower end, both sides arranges a straight vertical line segment and is connected with basis.
This bulk goods material shed arranges 16～24m at longitudinal two ends wide and longitudinally at interval of 128～156m, wide whole across closed area of 12～16m is set, whole across closed area be provided with form ceiling whole across sealing roofing 6, open wide closed at both ends region at longitudinal every two whole middle parts that wind is carried out to water conservancy diversion that are between across sealing roofing 6, forming horizontal span scope is the bulk goods material shed that 90～144m, longitudinal length scope are 592～1216m.
Be supported on the above whole being provided with between across agent structure skeleton 4 of ground basis at every two and connect the whole space bracket 7 across agent structure skeleton, the position of described space bracket 7 is located at the edge of ceiling open region, and the width of described space bracket 7 is 4～8m.
The both sides that centre opens wide closed at both ends region are provided with local load-bearing skeleton 8, the two ends of local load-bearing skeleton 8 are supported on respectively on space bracket 7 and basis, ground, and described space bracket 7 and local load-bearing skeleton 8 are the network of steel pipe truss or the quadrangular pyramid net shell of cell width 3～6m.
The described whole width across agent structure skeleton 4 is 8～24m.Describedly wholely also can be across agent structure skeleton 4 the semi-circular curvilinear structures that radius of curvature is 50～80m.Described whole be the network of steel pipe truss or the quadrangular pyramid net shell of cell width 3～6m across agent structure skeleton 4.
Described middle part opens wide that the closed area of closed at both ends region from basis, ground to ceiling is divided into closure plate district 1 successively, the plate district 2 that punches, closed stream lending plate district 3.Described closure plate district 1, closed stream lending plate district 3, whole profiled sheet or the glass epoxy that is broken line type across sealing roofing 6; Perforate verge board or flexible windproof net that the described plate district 2 of punching is the broken line type that arranges in closed area, both sides, be evenly provided with multiple through holes on perforate verge board, perforate verge board arranges the scope of height more than 20m.
Semiclosed environmental protection type wind water conservancy diversion dust suppression bulk goods material shed function of the present invention is such realization:
As shown in Fig. 1-9, semiclosed wind water conservancy diversion dust suppression type bulk goods material shed of the present invention except be provided with in longitudinally two ends and the setting of longitudinal separation certain distance form ceiling whole across sealing roofing 6 whole across closed area, all the other are opened wide closed at both ends form in the middle part of all adopting wind are carried out to water conservancy diversion, and the scope that ceiling is opened wide is not established load-carrying members.Middle part opens wide closed at both ends wind is carried out to water conservancy diversion.
Semiclosed wind water conservancy diversion dust suppression type bulk goods material structural system of the present invention forms:
1, described bulk goods material shed agent structure multiplely on basis, ground wholely forms across agent structure skeleton 4 by being supported on, and its shape has two types.Can be 20～50m by monosymmetric curved section radius of curvature, middle part curved section radius of curvature be 80～120m, and three sections of curvilinear structures part kisses connect and form, and curved section lower end, both sides arranges a straight vertical line segment and is connected with basis; Or be that 50～80m semicircular structure forms by radius of curvature.Wholely across agent structure skeleton 4 setting positions be: it is that 90～144m width is that 16～24m is whole across agent structure skeleton 4 that span is set at longitudinal 592～1216m direction both ends, and longitudinally at interval of 60～72m, what horizontal span is set is 90～144m, width be 8～16m is whole across agent structure skeleton 4.
2, connect the whole space bracket 7 across agent structure skeleton every two described whole being provided with between across agent structure skeleton 4, its width is 4～8m.It is whole across on agent structure skeleton 4 that the two ends of described space bracket 7 are connected to both sides, is positioned at the open region edge of ceiling.Play connection whole across agent structure skeleton 4, and in the middle of supporting, the local load-carrying members skeleton 8 in unlimited closed at both ends region acts on.
3, described bulk goods material shed cross section except longitudinal two ends 16～24m is wide and longitudinal separation 128～156m that 12～16m is set is wide whole whole across sealing across sealing roofing 6, all the other scopes all adopt middle part to open wide closed at both ends form wind is carried out to water conservancy diversion.Two ends, bulk goods material shed cross section each approximately 18～30m scope is closed area, the local load-carrying members skeleton 8 in closed at both ends region, and bottom hinge support is on basis, bottom surface, and upper support is connecting on the whole space carrier structure 7 across agent structure skeleton.Its closed area, both sides is attached with enclosed construction on local load-bearing skeleton 8, and wherein perforate verge board width or flexible windproof net are about 30% of material shed height of side wall; Middle part 54～84m scope is opened wide, and the scope that ceiling is opened wide is about 50%～60% of material shed total span, and middle part opens wide part and do not establish load-carrying members and roofing.
4, described middle part open wide that closed area, both sides is divided into successively closure plate district 1 from ground to ceiling, the plate district 2 that punches, closed stream lending plate district 3.
Long 16～the 24m to arranging at both ends of described longitudinally i.e. 592～1216m wide and longitudinally interval 128～156m wide whole across sealing roofing 6 of 12～16m is set.
5, described closure plate district 1 and closed stream lending plate district 3, whole profiled sheet or the glass epoxy that is broken line type across sealing roofing 6; Perforate verge board or flexible windproof net that the described plate district 2 of punching is the broken line type that arranges in closed area, both sides, be evenly provided with multiple through holes on perforate verge board.
It is 6, described that whole all to adopt cell width across agent structure skeleton 4, space bracket 7, local load-carrying members skeleton 8 be 3～6m steel pipe truss or quadrangular pyramid latticed shell structure.
7, wholely can adopt overall package or adopt folding and expanding formula integral construction technology across agent structure skeleton 4, as shown in Figure 8, Figure 9, first agent structure is removed to part rod member, make a rock-steady structure become movable mechanism, can fold up on ground by five regions across agent structure skeleton 4 whole like this, reduce to greatest extent setting height(from bottom), add necessary support temporarily, then will fold up agent structure, promote by arrow indication castering action point in Fig. 9.Rise to after design height, the uninstalled rod member of filling a vacancy, mechanism has become again a rock-steady structure, then removes temporary supporting.
8, can adopt flexible steel twisted wire formation rope to draw truss of steel tube or latticed shell structure to the sealing of ultra-large type span is whole across agent structure skeleton part, can reduce the whole steel using amount across agent structure skeleton part approximately 20%.
9, the horizontal and vertical load that generally adopts the transmission of pile foundation opposing agent structure.Great object of construction production can be according to wind numerical experiments and wind tunnel test if desired, determines the scope of opening wide and selects to adopt three sections of curvilinear structures shapes or semi-circular planform.
Connect the whole space bracket 7 across agent structure skeleton every two whole being provided with between across agent structure skeleton 4, it is whole across on agent structure skeleton 4 that the two ends of space bracket 7 are connected to both sides, the open region edge of ceiling.Play connection whole across agent structure skeleton 4, and in the middle of supporting, the local load-carrying members skeleton 8 in unlimited closed at both ends region acts on.
Except the wide and longitudinal separation 132m of longitudinal two ends 24m, that 16m is set is wide whole whole across closed area across sealing roofing 6, and all the other scopes all adopt middle part to open wide closed at both ends form wind is carried out to water conservancy diversion.The each 24m scope in two ends, bulk goods material shed cross section is closed area, the local load-carrying members skeleton 8 in closed at both ends region, and bottom hinge support is on basis, bottom surface, and upper support is connecting on the whole space carrier structure 7 across agent structure skeleton.Its closed area, both sides is attached with enclosed construction on local load-bearing skeleton 8, and wherein perforate verge board width is about 30% of material shed height of side wall; Ceiling middle part 72m scope is opened wide, and the scope that ceiling is opened wide is 60% of material shed total span, and middle part opens wide part and do not establish load-carrying members and roofing.
Wholely can adopt overall package or adopt folding and expanding formula integral construction technology across agent structure skeleton 4.Adopt folding and expanding formula integral construction technology, as shown in Figure 8, Figure 9, be characterized in first agent structure being removed part rod member, make a rock-steady structure become movable mechanism, can fold up on ground by five parts across agent structure skeleton 4 whole like this, reduce to greatest extent setting height(from bottom), add necessary support temporarily, then will fold up agent structure, promote by arrow indication castering action point in Fig. 9.Rise to after design height, the uninstalled rod member of filling a vacancy, mechanism has become again a rock-steady structure, then removes temporary supporting.
Connect the whole space bracket 7 across agent structure skeleton every two whole being provided with between across agent structure skeleton 4, it is whole across on agent structure skeleton 4 that the two ends of described space bracket are connected to both sides, is positioned at the open region edge of ceiling.Play connection whole across agent structure skeleton 4, and in the middle of supporting, the local load-carrying members skeleton 8 in unlimited closed at both ends region acts on.
Except the wide and longitudinal separation 128m of longitudinal two ends 16m, that 16m is set is wide whole whole across closed area across sealing roofing 6, and all the other scopes all adopt middle part to open wide closed at both ends form wind is carried out to water conservancy diversion.Two ends, bulk goods material shed cross section 18m scope is closed area, the local load-carrying members skeleton 8 in closed at both ends region, and bottom hinge support is on basis, bottom surface, and upper support is connecting on the whole space carrier structure 7 across agent structure skeleton.Its closed area, both sides is attached with enclosed construction on local load-bearing skeleton 8, and wherein perforate verge board width is about 30% of material shed height of side wall; Ceiling middle part 54m scope is opened wide, and the scope that ceiling is opened wide is 60% of material shed total span, and middle part opens wide part and do not establish load-carrying members and roofing.
Wholely can adopt overall package integral construction technology across agent structure skeleton 4.
Connect the whole space bracket 7 across agent structure skeleton every two whole being provided with between across agent structure skeleton 4, it is whole across on agent structure skeleton 4 that the two ends of described space bracket are connected to both sides, is positioned at the open region edge of ceiling.Play connection whole across agent structure skeleton 4, and in the middle of supporting, the local load-carrying members skeleton 8 in unlimited closed at both ends region acts on.
Except the wide and longitudinal separation 156m of longitudinal two ends 24m, that 16m is set is wide whole whole across closed area across sealing roofing 6, and all the other scopes all adopt middle part to open wide closed at both ends form wind is carried out to water conservancy diversion.The each 30M scope in two ends, bulk goods material shed cross section is closed area, the local load-carrying members skeleton 8 in closed at both ends region, and bottom hinge support is on basis, bottom surface, and upper support is connecting on the whole space carrier structure 7 across agent structure skeleton.Its closed area, both sides is attached with enclosed construction on local load-bearing skeleton 8, and wherein perforate verge board width is about 30% of material shed height of side wall; Ceiling middle part 84m scope is opened wide, and the scope that ceiling is opened wide is 58.3% of material shed total span, and middle part opens wide part and do not establish load-carrying members and roofing.
This large-scale whole across agent structure skeleton 4 adopt flexible steel twisted wire form rope draw truss of steel tube or latticed shell structure, can reduce the whole steel using amount across agent structure skeleton part approximately 20%.
Semiclosed environmental protection type wind water conservancy diversion dust suppression bulk goods material shed of the present invention has comprehensively carried out outdoor store up and sealing is stored up and analyzed relatively, carry out the analysis of anti-wind net anti-dust effect, adopting MSGS spatial mesh structure engineering analytical procedure is 90～144m to horizontal span scope, longitudinal length is 592～1216m, three sections of curved portion kisses that are shaped as multiple radius of curvature connect and form structure, or be 50～80m semicircular structure by radius of curvature, carry out multi-scheme computational analysis comparison.
And carry out digital-to-analogue verification experimental verification by Tongji University's civil engineering National Key Laboratory that takes precautions against natural calamities:
Respectively semi-closed ring guarantor type wind water conservancy diversion dust suppression bulk goods material shed has been carried out under the different maximum wind velocity effects of 16m/s, 20m/s, bulk goods material shed adopts different profiles, i.e. multiple three curves and semicircle stockpile surface maximum wind velocity check analysis; Windward side space enclosing structure arranges different ratio perforate verge boards, by 0～100%, by 10% analysis of Wind-excited Behavior increasing progressively; Open distance and dump surface maximum wind velocity affect check analysis; The different rates of opening wide of ceiling, by 0～100%, by the 10% wind effect analysis increasing progressively.
According to digital-to-analogue test and MSGS spatial mesh structure analysis result, select part respond well, representational achievement, finds the following common law of existence, take span 120m as example, as table 1～3 and Figure 10-14:
1, conventionally stockpile plays dirt and is divided into two large classes: 1. in the processes such as heap feeding, dynamically play dirt, and main relevant with operation drop, handling intensity etc., generally take to reduce the measure solution such as operation drop and sprinkling water smoke.2. the static state on surface, stockpile field plays dirt, main and material surface moisture content, wind speed etc. are closely related, when external influence reaches some strength at stockpile surface wind speed, when this wind-force makes the upwards power of migration that bulk material heap surface particles produces be enough to overcome friction between particle self gravitation and particle and other to hinder the external force of particle migrations, particle just leaves stacking surface and airborne dust, and wind speed has now been called as dirt critical wind velocity.According to the test of statistics and digital-to-analogue, play dirt critical wind velocity and play dust quantity in table 1～3:
A dirt critical wind velocity of table 1 different-grain diameter coal dust
Table 2 different water cut coal yard plays dirt critical wind velocity and calculates m/s
Table 3 different water cut coal yard stock ground is played dust quantity and is calculated g/s
By above bulk material drift speed to bulk material different-grain diameter, water content with play dust counter calculation and Analysis, show that stockpile does not play dirt in the time acting on stockpile surface wind speed lower than dirt critical wind velocity.In the time acting on stockpile surface wind speed and exceeded dirt critical wind velocity, the blast that acts on stockpile surface is 2 powers along with wind speed increases and increases, and plays dust quantity and is 4 powers along with wind speed increases and increases.By the setting parallel works that keeps out the wind, use aerodynamic principle by high-intensity bumpy flow, become weak intensity vortex, reduce the wind speed of incoming flow wind, lose to greatest extent the kinetic energy of incoming flow wind, avoid the obvious eddy current of incoming flow wind, reduce the turbulivity of wind, prevent dust from flying, reach the object that has reduced dirt.
When ultra-large type loose unpacked material is stored up, because not needing rainproof and forbidding that circulation of air, dust suppression key are rationally to control the flow direction and the wind speed of wind, make to act on stockpile surface wind speed and be controlled at dirt critical wind velocity scope, reach the object of basic inhibition dust.Catch above-mentioned key technique, passed through multi-scheme demonstration, analytical calculation comparison, and through numerical experiments and wind-tunnel physical experiments, invented a kind of ultra-large type wind water conservancy diversion dust suppression type bulk goods material shed.
2, the impact of the ventilative rate of windward side space enclosing structure
Digital-to-analogue test shows: perforate verge board is not set, and air-flow can enter the verge board inside of downwind side after entering top verge board, thereby in ceiling downwind side, formed large air-flow vortex, caused the dump of downwind side easily to form airborne dust; By perforate verge board is set, part air-flow reduces by flow velocity after verge board, this part air-flow open section with stream air-flow and mix, make air-flow entirety upwards away from ceiling, be difficult in downwind side ceiling, forming air-flow vortex, reduced the air velocity on downwind side dump surface; By the ventilative rate 0～100% of windward side space enclosing structure, by the 10% analysis of Wind-excited Behavior digital-to-analogue test increasing progressively, the negative pressure maximum when pressure-plotting in ceiling demonstrates not perforate of verge board, after perforate, negative pressure can significantly reduce.Figure 10 is the verge board that different ventilative rates are set, and ventilative rate and stockpile surface maximum wind velocity contrasts figure, thereby can think that the ventilative rate of 20%～40% perforate verge board is set is better; Figure 11 is the ventilative rate wind scorpion figure of bulk goods material shed windward side space enclosing structure 30%;
3, ceiling structure opens wide the impact of rate
Open wide rate 0～100% by ceiling structure, by the 10% wind effect analysis digital-to-analogue test increasing progressively, show the increase of opening wide rate along with ceiling structure, downwind side dump surface wind speed is progressively increasing, and opens wide the airborne dust that rate more easily causes more greatly dump; The flow field of ceiling inside is to this parameter performance and insensitive simultaneously, the impact that is different unlimited rate stream field is limited, dump maximized surface wind speed under different open distance is listed, Figure 12 be bulk goods material shed under 20m/s effect, open distance and dump surface maximum wind velocity control curve figure; As Figure 12 can find out that in ceiling open distance 50～60% scopes be more suitable.Reach 60% when above when ceiling structure opens wide rate, downwind side dump surface wind speed increases rapid, and windproof effect is bad.General anti-wind net structure has also been described, has been equivalent to ceiling structure and opens wide rate 100%, easily cause the airborne dust of dump, windproof effect is poor.Figure 13 is that bulk goods material shed ceiling structure 50% opens wide rate wind design sketch.
4, the ceiling appearance and size under different curvature curve is larger to the flow in ceiling.
By the different outline drawings of Figure 14 bulk goods material shed, the corresponding stockpile of Figure 15 different profiles under the effect of 20m/s wind speed surface maximum wind velocity control curve figure, can find out: the ceiling profile under different curvature curve is larger to the flow in ceiling under wind effect.
As shown in outline drawings as different in Figure 14 bulk goods material shed, first all curves are carried out to rough classification, the first a is that three sections of curvilinear structures of sidepiece near vertical top level of approximation kiss connects and forms, and last a kind of g is semi arch curve, and remaining curve three sections of curvilinear structures kisses that fall between connect and form.From the corresponding stockpile of Figure 15 different profiles under the effect of 20m/s wind speed surface maximum wind velocity control curve figure numerical simulation result can find out the first and last a kind of wind scorpion all better, and the ceiling curve of curvature is bad on the contrary between.
Optimum ceiling curve is circular curve, the wind speed minimum on dump surface in ceiling under this shape.
5, the impact of ceiling appearance and size on structural system receive strength rationality under different curvature curve
Press shown in the different outline drawings of Figure 14 bulk goods material shed, carry out the analysis of MSGS spatial mesh structure, ceiling appearance and size under different curvature curve is larger to structural system receive strength rationality and Investment Influence, the first is sidepiece near vertical top level of approximation, structural system is stressed rationally little, invest highlyer, ceiling curve is that circular curve structural system is stressed more reasonable.
6, the impact of the ceiling appearance and size under different curvature curve on process equipment
Press shown in the different outline drawings of Figure 14 bulk goods material shed, the first is that sidepiece near vertical top level of approximation ceiling appearance and size is arranged and uses more convenient process equipment, space availability ratio is high, ceiling curve is that semi arch curve is that process equipment is arranged and uses within the scope of ceiling span centre part, have the non-utilization height of part, space availability ratio is low.
In sum, through adopting MSGS spatial mesh structure engineering analytical procedure computational analysis and the Tongji University's civil engineering National Key Laboratory's digital-to-analogue verification experimental verification of taking precautions against natural calamities, and consider different curve ceiling appearance and size to factors such as the flow in process equipment, ceiling, structural system receive strength rationalities.Select bulk goods material shed transverse shape size, the spacious rate of bulk goods material shed transverse shape, the ventilative rate of space enclosing structure, structural system.
Pile routinely feeding technological requirement, ultra-large type wind water conservancy diversion dust suppression type bulk goods material shed horizontal span scope is 90～144m, and longitudinal length can reach 592～1216m, and area 53280～145920m2, always up to 45m.
Bulk goods material shed transverse shape: select to adopt three sections of curvilinear structures kiss to connect and form, two sections, two ends curve curvature radius is about 20～50m, interlude curve curvature radius is about 80～120m, curved section lower end, both sides arranges a straight vertical line segment and is connected with basis; Or employing radius of curvature is that approximately the semi-circular curvilinear structures of 50～80m forms form of fracture.
Select bulk goods material shed middle part 54～84m scope to open wide, two ends each approximately 30～18m scope is enclosed construction, and middle part opens wide closed at both ends wind is carried out to water conservancy diversion, and the scope that ceiling is opened wide is 50%～60% of material shed total span.Select windward side space enclosing structure that the ventilative rate of 30% perforate verge board is set, height is set at 20m, as material shed form of the present invention.
By the water conservancy diversion to wind and reduction of speed, reduce the turbulivity of wind, to different water cut, different bulk cargo, control by acting on a material surface dirt critical wind velocity, effectively suppress to know clearly the effect of wind to loose unpacked material, substantially solved the problem of environmental pollution that dust causes.
Claims (9)
1. a semiclosed environmental protection type wind water conservancy diversion dust suppression bulk goods material shed, this bulk goods material shed is supported on basis, ground, it is characterized in that: this material shed structure includes whole across agent structure skeleton (4) and be supported on basis, ground, three sections of curvilinear structures part kisses of the whole monosymmetric curved section across agent structure skeleton (4) and middle part curved section connect and form, and curved section lower end, both sides arranges a straight vertical line segment and is connected with basis;
This bulk goods material shed is at longitudinal two ends and longitudinally arrange whole across closed area at interval of certain distance, whole across closed area be provided with form ceiling whole across sealing roofing (6), open wide closed at both ends region at longitudinal every two whole middle parts that wind is carried out to water conservancy diversion that are between across sealing roofing (6), forming horizontal span scope is the bulk goods material shed that 90～144m, longitudinal length scope are 592～1216m.
2. semiclosed environmental protection type wind water conservancy diversion dust suppression bulk goods material shed according to claim 1, is characterized in that: described both sides curved section radius of curvature is 20～50m, and middle part curved section radius of curvature is 80～120m; Bulk goods material shed arranges 16～24m at longitudinal two ends wide and longitudinally at interval of 128～156m, wide whole across closed area of 12～16m is set.
3. semiclosed environmental protection type wind water conservancy diversion dust suppression bulk goods material shed according to claim 1, it is characterized in that: be supported on the above whole being provided with between across agent structure skeleton (4) of ground basis at every two and connect the whole space bracket (7) across agent structure skeleton, the position of described space bracket (7) is located at the edge of ceiling open region, and the width of described space bracket (7) is 4～8m;
The both sides that centre opens wide closed at both ends region are provided with local load-bearing skeleton (8), and the two ends of local load-bearing skeleton (8) are supported on respectively on space bracket (7) and basis, ground.
4. semiclosed environmental protection type wind water conservancy diversion dust suppression bulk goods material shed according to claim 1, is characterized in that: the described whole width across agent structure skeleton (4) is 8～24m.
5. semiclosed environmental protection type wind water conservancy diversion dust suppression bulk goods material shed according to claim 1, is characterized in that: the described whole semi-circular curvilinear structures that is 50～80m for radius of curvature across agent structure skeleton (4).
6. semiclosed environmental protection type wind water conservancy diversion dust suppression bulk goods material shed according to claim 1, is characterized in that: described whole be the steel pipe truss of cell width 3～6m or the network of quadrangular pyramid net shell across agent structure skeleton (4).
7. semiclosed environmental protection type wind water conservancy diversion dust suppression bulk goods material shed according to claim 1, is characterized in that: described middle part opens wide that the closed area of closed at both ends region from basis, ground to ceiling is divided into closure plate district (1) successively, the plate district (2) that punches, closed stream lending plate district (3).
8. semiclosed environmental protection type wind water conservancy diversion dust suppression bulk goods material shed according to claim 7, is characterized in that: described closure plate district (1), closed stream lending plate district (3), whole profiled sheet or the glass epoxy that is broken line type across sealing roofing (6); Perforate verge board or flexible windproof net that the described plate district (2) that punches is the broken line type that arranges in closed area, both sides, be evenly provided with multiple through holes on perforate verge board, perforate verge board arranges the scope of height more than 20m.
9. semiclosed environmental protection type wind water conservancy diversion dust suppression bulk goods material shed according to claim 3, is characterized in that: described space bracket (7) and local load-bearing skeleton (8) are the steel pipe truss of cell width 3～6m or the network of quadrangular pyramid net shell.
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| CN105986678A (en) * | 2015-02-17 | 2016-10-05 | 柏美迪康环境工程（上海）股份有限公司 | Material pile ceiling |
| CN105986698A (en) * | 2015-02-17 | 2016-10-05 | 柏美迪康环境工程（上海）股份有限公司 | Using method of ceiling structures with dust restraining and weather-factor preventing functions |
| CN108382755A (en) * | 2018-03-29 | 2018-08-10 | 山西尚风科技股份有限公司 | A kind of totally-enclosed removable feed bin of nested type |
| CN108360899A (en) * | 2018-04-23 | 2018-08-03 | 西安西热锅炉环保工程有限公司 | A kind of closing coal yard and its working method |
| CN108946226B (en) * | 2018-08-24 | 2023-07-14 | 天津大学 | Ventilation dust suppression coal bin structure and ventilation dust suppression method based on Bernoulli principle |
| CN109081130A (en) * | 2018-10-18 | 2018-12-25 | 山西尚风科技股份有限公司 | A kind of totally-enclosed feed bin of Telescopic movable |
| CN112548288B (en) * | 2020-11-27 | 2022-02-08 | 中船澄西船舶修造有限公司 | Windproof, shading and heat-insulating device for three-in-one welding trolley |
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| CN201141221Y (en) * | 2007-12-11 | 2008-10-29 | 秦皇岛耀华玻璃钢股份公司 | Environment-protection array type dustproof curtain |
| US7814714B2 (en) * | 2008-01-30 | 2010-10-19 | Cornbelt Fabric Structures, Llc | Apparatus and system to increase capacity of granular material storage structures |
| CN202063478U (en) * | 2011-05-12 | 2011-12-07 | 中冶赛迪工程技术股份有限公司 | Semi-closed environment-friendly material storage yard |
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