JPH0649766Y2 - Dust-proof enclosure of open-field coal storage yard - Google Patents
Dust-proof enclosure of open-field coal storage yardInfo
- Publication number
- JPH0649766Y2 JPH0649766Y2 JP4365889U JP4365889U JPH0649766Y2 JP H0649766 Y2 JPH0649766 Y2 JP H0649766Y2 JP 4365889 U JP4365889 U JP 4365889U JP 4365889 U JP4365889 U JP 4365889U JP H0649766 Y2 JPH0649766 Y2 JP H0649766Y2
- Authority
- JP
- Japan
- Prior art keywords
- net
- storage yard
- coal storage
- wire
- dust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Fencing (AREA)
Description
【考案の詳細な説明】 〈産業上の利用分野〉 本考案は、野積み貯炭場の防塵囲いに関する。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a dustproof enclosure of an open coal storage yard.
〈従来の技術〉 石炭パイルからの炭塵飛散量は、風速の４〜６乗に比例
して発生する為、パイル表面での風速を減じることによ
る炭塵飛散の抑制効果は大きい。<Prior Art> Since the amount of coal dust scattered from a coal pile is generated in proportion to the 4th to 6th power of the wind speed, the effect of suppressing the coal dust scattering by reducing the wind speed on the pile surface is great.
従来は、風対策として、防塵フェンスが用いられてい
た。Conventionally, a dust-proof fence has been used as a measure against wind.
防塵フェンスには、コンクリート壁の様に通風性が無い
ものと、通風性を有するネット状のフェンスとがあり、
後者のネット状のフェンスの方が防塵効果が高いことが
明らかにされている。Dust-proof fences include those that do not have ventilation such as concrete walls, and net-like fences that have ventilation.
It has been clarified that the latter net fence is more effective in preventing dust.
ネット状の防塵フェンスは、ネットの網目率が40％〜60
％の範囲内のネットを、貯炭場の周囲に設けた多数の支
柱によって、地表面に対し垂直に支持している。Net dustproof fence has a net mesh ratio of 40% to 60
The net within the range of% is supported perpendicularly to the ground surface by a large number of columns provided around the coal storage yard.
又防塵フェンスの高さは貯炭場の長さに対して1/10以上
にすることが防塵効果を得る為に必要になっている。Also, the height of the dustproof fence must be 1/10 or more of the length of the coal storage yard to obtain the dustproof effect.
〈考案が解決しようとする課題〉 上記した従来の技術では、 ネットの網目率が低過ぎると通風性が悪くなりフェン
スの後方で大きな渦を発生して貯炭場内に流入し、野積
みパイルに風が当って炭塵を巻き上げてしまう。<Problems to be solved by the invention> In the above-mentioned conventional technology, if the mesh ratio of the net is too low, ventilation is deteriorated and a large vortex is generated behind the fence to flow into the coal storage yard and wind is blown to the open pile. It hits and winds up coal dust.
ネットの網目率が高過ぎると通風性が良く成り過ぎ
て、殆ど風速が減速されない為に防塵効果が生じない。If the mesh ratio of the net is too high, the ventilation becomes too good, and the wind speed is hardly reduced, so that the dustproof effect does not occur.
貯炭場の長さが長くなると、極めて高い防塵フェンス
が必要になる。その為強風に対する防塵フェンスの強度
を考慮すると多数の支柱が必要になり、設計が大掛りな
ものになる。又工事コストが高いものになる。As the length of the coal yard increases, extremely high dust fences are needed. Therefore, considering the strength of the dust-proof fence against strong winds, a large number of columns are required and the design becomes large. Moreover, the construction cost becomes high.
等の課題を有していた。Had problems such as.
〈課題を解決するための手段〉 本考案は、上記課題を解決する為に成されたもので、貯
炭場内に設けたワイヤ支持体と、貯炭場の周囲に設けた
複数個のワイヤ固定部と、ワイヤ支持体とワイヤ固定部
との間に架設した斜長ワイヤと、貯炭場の周囲に設けた
ネット固定部と、斜長ワイヤに支持されるとともにネッ
ト固定部に固定され且つ中央に向けて昇り傾斜させた防
塵ネットとを備えたものであって、前記防塵ネットは、
ネットの網目率が30％以上60％以下に形成されるととも
にネットの上部開口の長径ｌと地表面からネットの上部
開口迄の高さｈとの関係がｈ≧l/10に設けられたことを
特徴とするものである。<Means for Solving the Problems> The present invention has been made to solve the above problems, and includes a wire support provided in a coal storage yard and a plurality of wire fixing portions provided around the coal storage yard. , A slanting wire erected between the wire support and the wire fixing part, a net fixing part provided around the coal storage yard, a slanting wire supported by the slanting wire and fixed to the net fixing part and directed toward the center And a dustproof net inclined upward, wherein the dustproof net is
The net mesh ratio is 30% or more and 60% or less, and the relationship between the major axis l of the upper opening of the net and the height h from the ground surface to the upper opening of the net is set to h ≧ l / 10. It is characterized by.
〈作用〉 上記構成の野積み貯炭場の防塵囲いは、防塵ネットを傾
斜させて設けたことにより、防塵ネットが受ける風の抵
抗が小さくなる。<Operation> Since the dustproof enclosure of the above-mentioned open field coal storage yard is provided with the dustproof net inclined, the resistance of the wind to the dustproof net is reduced.
又ネットの網目率が30％より低い場合には、防塵ネット
に当った風は、その殆どがネットの網目を通過すること
なく防塵ネットに沿って流れ、上部開口の端部で渦を発
生して貯炭場内に流入し、炭塵を巻き上げる。When the net mesh ratio is lower than 30%, most of the wind hitting the dustproof net flows along the dustproof net without passing through the net mesh, generating vortices at the end of the upper opening. Flow into the coal yard and wind up coal dust.
ネットの網目率が60％より高い場合には、防塵ネットに
当った風は、その大部分がネットの網目を通過して、風
速が殆ど減速されないで貯炭場内に流入し、炭塵を発生
させる。When the net mesh ratio is higher than 60%, most of the wind hitting the dustproof net passes through the net mesh and flows into the coal yard with almost no reduction in wind speed, generating coal dust. .
よって、ネットの網目率を30％以上60％以下に形成した
防塵ネットにより、防塵ネットに当る風は、その一部分
がネットの網目を通して十分に減速されて貯炭場内に流
入する。Therefore, due to the dustproof net formed with the net mesh ratio of 30% or more and 60% or less, a part of the wind hitting the dustproof net is sufficiently decelerated through the net mesh and flows into the coal yard.
又ネットの網目を通過しない風が防塵ネット外面に沿っ
て風下方向に流れる。Further, the wind that does not pass through the mesh of the net flows in the leeward direction along the outer surface of the dustproof net.
この時、ネットの上部開口に沿って流れる風は、上部開
口の端部で渦を発生することがないので乱れることがな
い。At this time, the wind that flows along the upper opening of the net does not generate vortices at the end of the upper opening, and therefore is not disturbed.
又ネットの上部開口の長径ｌと地表面からネットの上部
開口迄の高さとの関係をｈ＜l/10にした場合には、防塵
ネットに沿って流れる風がネットの上部開口の風下側よ
り貯炭場内に流れ込み、炭塵を巻き上げる。Also, if the relationship between the major axis l of the net upper opening and the height from the ground surface to the net upper opening is set to h <l / 10, the wind flowing along the dustproof net is from the leeward side of the net upper opening. It flows into the coal yard and winds up coal dust.
よって、防塵ネットは、ネットの上部開口の長径ｌと地
表面からネットの上部開口迄の高さｌとの関係をｈ≧l/
10にしたことにより、貯炭場内にネットの上部開口から
風が流入しない。Therefore, for a dustproof net, the relationship between the major axis l of the upper opening of the net and the height l from the ground surface to the upper opening of the net is h ≧ l /
By setting 10, the wind does not flow into the coal yard through the upper opening of the net.
従って、貯炭場内には、野積みパイルに当って炭塵を発
生させる風速を有する風が流れない。Therefore, in the coal storage yard, wind having a wind speed that generates coal dust upon hitting the pile pile does not flow.
〈実施例〉 本考案の実施例を図に基づいて説明する。<Embodiment> An embodiment of the present invention will be described with reference to the drawings.
第１図に示す野積み貯炭場の防塵囲い１は、貯炭場２の
中央部に設けた支柱（ワイヤ支持体）３と、複数本の斜
長ワイヤ４と、防塵ネット５とから成る。The dustproof enclosure 1 of the open-field coal storage yard shown in FIG. 1 comprises a column (wire support) 3 provided in the central portion of the coal storage yard 2, a plurality of diagonally long wires 4, and a dust-proof net 5.
前記貯炭場２の周囲には、所定の間隔に複数個のワイヤ
固定部６が配設されている。Around the coal storage yard 2, a plurality of wire fixing portions 6 are arranged at predetermined intervals.
前記斜長ワイヤ４は、前記支柱３の頂部と前記各ワイヤ
固定部６との間に架設されている。The diagonal wires 4 are installed between the tops of the columns 3 and the wire fixing portions 6.
前記防塵ネット５は、貯炭場２の形状と略等しくかつ略
中央に開口（上部開口）11が設けられたものであって、
斜長ワイヤ４より傾斜をもって固定されている。The dustproof net 5 is substantially the same as the shape of the coal storage yard 2 and is provided with an opening (upper opening) 11 at substantially the center,
It is fixed with an inclination from the obliquely long wire 4.
防塵ネット５の外周端は、貯炭場２の外周に形成したネ
ット固定部７に固定されている。An outer peripheral end of the dustproof net 5 is fixed to a net fixing portion 7 formed on the outer periphery of the coal storage yard 2.
防塵ネット５は、第２図に示す様に、上部開口11の中央
に向けて昇り傾斜状に設けられている。As shown in FIG. 2, the dustproof net 5 is provided so as to be inclined toward the center of the upper opening 11.
斯かるネット５は、ネット糸5a,5bに略矩形の網目10,10
…が複数設けられており、この総網目10,10…のネット
表面積に対する面積の割合（網目率という）は30％以上
60％以下であることが望ましく、又ネットの網目10の形
状は、網目率が30％以上60％以下であれば、矩形の形状
に限定する必要はない。Such a net 5 has meshes 10 and 10 of substantially rectangular shape on the net yarns 5a and 5b.
A plurality of… are provided, and the ratio of the area of the total mesh 10,10… to the net surface area (called mesh ratio) is 30% or more.
It is desirable to be 60% or less, and the shape of the mesh 10 of the net need not be limited to a rectangular shape as long as the mesh ratio is 30% or more and 60% or less.
さらに防塵ネット５は、第３図に示す様に、ネットの上
部開口11の長径ｌと地表面12からネットの上部開口11迄
の高さｈとの間にはｈ≧l/10なる関係に設けられてい
る。Further, as shown in FIG. 3, the dustproof net 5 has a relationship of h ≧ l / 10 between the major axis 1 of the upper opening 11 of the net and the height h from the ground surface 12 to the upper opening 11 of the net. It is provided.
この防塵ネット５は、耐候性を有するとともに十分な引
張り強度が得られる酢酸ビニル系樹脂やポリエチレン等
が用いられる。The dustproof net 5 is made of vinyl acetate resin, polyethylene or the like, which has weather resistance and sufficient tensile strength.
前記ワイヤ固定部６の基礎の高さh1は、任意の高さに形
成して良い。The height h 1 of the foundation of the wire fixing portion 6 may be formed at any height.
斜長ワイヤ４の振動や揺れは、振動減衰ダンパ14により
減少する。Vibration and vibration of the oblique wire 4 are reduced by the vibration damping damper 14.
また、ネット固定部７の基礎の高さh2については地表面
よりh/2以下が好ましい。Further, the height h 2 of the foundation of the net fixing portion 7 is preferably h / 2 or less from the ground surface.
ネット固定部７の基礎の高さh2がh/2より高くなると、
風がネットの上部開口11より貯炭場２内に流入して、野
積みパイル15に当り、炭塵を発生させてしまうので好ま
しくない。When the height h 2 of the foundation of the net fixing part 7 becomes higher than h / 2,
The wind flows into the coal stock yard 2 through the upper opening 11 of the net and hits the open pile 15 to generate coal dust, which is not preferable.
次に、第４図に示す野積み貯炭場の防塵囲い１は、ワイ
ヤ支持体を、複数本（４本）の支柱８と、各支柱８の頂
部を順に架設した支持ワイヤ９とで形成したものであ
る。Next, the dustproof enclosure 1 of the open-stack coal storage yard shown in FIG. 4 is formed of a wire support body by a plurality of (four) columns 8 and a supporting wire 9 in which the tops of the columns 8 are laid in order. It is a thing.
この場合、前記支柱８は、貯炭場２の対角線上に設けら
れている。In this case, the pillars 8 are provided on the diagonal line of the coal storage yard 2.
又前記支持ワイヤ９と貯炭場２の周囲に設けた複数個の
ワイヤ固定部６との間には、所定の間隔を有して複数本
の斜長ワイヤ４が架設されている。A plurality of diagonal wires 4 are installed between the support wire 9 and a plurality of wire fixing portions 6 provided around the coal storage yard 2 with a predetermined interval.
そして、前記支持ワイヤ９と貯炭場２の周囲に設けたワ
イヤ固定部６との間には、斜長ワイヤ４に支持された防
塵ネット５が貯炭場２の周囲から開口11の中央に向けて
昇り傾斜状に設けてある。Then, between the support wire 9 and the wire fixing portion 6 provided around the coal storage yard 2, a dustproof net 5 supported by the slanted wire 4 extends from the periphery of the coal storage yard 2 toward the center of the opening 11. It is provided in a rising slope.
該防塵ネット５は、第１図で説明した防塵ネットと同様
のものが用いられ、又ネットの上部開口の長径と地表面
から上部開口迄の高さとの関係も同様である。As the dustproof net 5, the same one as the dustproof net described in FIG. 1 is used, and the relationship between the major axis of the upper opening of the net and the height from the ground surface to the upper opening is also the same.
本考案の野積み貯炭場の防塵囲い１は、貯炭場のみなら
ず、鉱石，石灰石，砂利及び土砂等を野積みした貯場の
防塵囲いに適用することができる。The dustproof enclosure 1 of the open-field coal storage yard according to the present invention can be applied not only to the coal-storage area but also to the dust-proof enclosure of a storage pile of ore, limestone, gravel, earth and sand, etc.
〈考案の効果〉 上記した様な本考案の野積み貯炭場の防塵囲いによれ
ば、 防塵ネット周囲を流れる風の乱れがなくなり、又貯炭
場内を流れる風速を遅くすることができるので、安定し
た防塵効果が得られる。<Effect of the Invention> According to the dustproof enclosure of the open-field coal storage yard of the present invention as described above, the turbulence of the wind flowing around the dust-proof net is eliminated, and the wind speed flowing inside the coal storage yard can be slowed down, so that it is stable. A dustproof effect can be obtained.
防塵ネットを中央に向けて昇り傾斜させたので、風の
抵抗を小さくすることができ、その分支柱の本数を低減
して構造を簡単化でき、工期や工費を縮減することがで
きる。Since the dustproof net is inclined upward toward the center, the wind resistance can be reduced, the number of columns can be reduced correspondingly, the structure can be simplified, and the construction period and construction cost can be reduced.
第１図は、本考案の実施例を説明する斜視図、 第２図は、第１図に示した防塵ネットの網目を説明する
図、 第３図は、第１図に示した実施例を説明する正面図、 第４図は、本考案の別の実施例を説明する斜視図であ
る。 １……野積み貯炭場の防塵囲い,2……貯炭場， ３……ワイヤ支持体,4……斜長ワイヤ， ５……防塵ネット,6……ワイヤ固定部， ７……ネット固定部,8……支柱， ９……支持ワイヤ,10……ネットの網目， 11……ネットの上部開口,12……地表面， 14……ワイヤの振動減衰ダンパ,l……ネットの上部開口
の長径， ｈ……地表面からネットの上部開口迄の高さ， h1……ワイヤ固定部の高さ，h2……ネット固定部の高
さ。FIG. 1 is a perspective view for explaining an embodiment of the present invention, FIG. 2 is a view for explaining the mesh of the dustproof net shown in FIG. 1, and FIG. 3 is an embodiment for showing the embodiment shown in FIG. FIG. 4 is a perspective view for explaining another embodiment of the present invention. 1 …… Dust-proof enclosure of open-field coal storage yard, 2 …… Coal storage yard, 3 …… Wire support, 4 …… Blank wire, 5 …… Dust-proof net, 6 …… Wire fixing part, 7 …… Net fixing part , 8 ... Posts, 9 ... Support wires, 10 ... Net mesh, 11 ... Net upper opening, 12 ... Ground surface, 14 ... Wire vibration damping damper, l ... Net upper opening major axis, h ...... ground surface from up the upper opening of the net height, h 1 ...... wire fixing portion of the height, h 2 ...... net fixed part of the height.
Claims (1)
斜長ワイヤと、 貯炭場の周囲に設けたネット固定部と、 斜長ワイヤに支持されて中央に向けて昇り傾斜となる状
態に設けられるとともに、上部開口が形成された防塵ネ
ットとを備えたものであって、 前記防塵ネットは、ネットの網目率が30％以上60％以下
に形成されるとともに、ネットの上部開口の長径ｌと地
表面からネットの上部開口迄の高さｈとの関係がｈ≧l/
10に設けられたことを特徴とする野積み貯炭場の防塵囲
い。1. A wire support provided inside a coal storage yard, a plurality of wire fixing portions provided around the coal storage yard, and an oblique wire erected between the wire support and the wire fixing portion. A net fixing portion provided around a coal storage yard, and a dust-proof net having an upper opening formed while being supported by a slanting wire so as to rise and slope toward the center, The dustproof net is formed such that the mesh ratio of the net is 30% or more and 60% or less, and the relationship between the major axis l of the upper opening of the net and the height h from the ground surface to the upper opening of the net is h ≧ l /
Dust-proof enclosure of open-field coal storage yard characterized by being installed in 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4365889U JPH0649766Y2 (en) | 1989-04-14 | 1989-04-14 | Dust-proof enclosure of open-field coal storage yard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4365889U JPH0649766Y2 (en) | 1989-04-14 | 1989-04-14 | Dust-proof enclosure of open-field coal storage yard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02134270U JPH02134270U (en) | 1990-11-07 |
| JPH0649766Y2 true JPH0649766Y2 (en) | 1994-12-14 |
Family
ID=31556258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4365889U Expired - Lifetime JPH0649766Y2 (en) | 1989-04-14 | 1989-04-14 | Dust-proof enclosure of open-field coal storage yard |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0649766Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118390900B (en) * | 2024-06-27 | 2024-09-17 | 福建才溪建设集团有限公司 | Dustproof equipment for construction |
-
1989
- 1989-04-14 JP JP4365889U patent/JPH0649766Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02134270U (en) | 1990-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112030788A (en) | Wind-proof sand-blocking device for wind-sand area and wind-sand protection system for roadbed of wind-sand area | |
| JPH0649766Y2 (en) | Dust-proof enclosure of open-field coal storage yard | |
| CN112030791A (en) | Wind and sand prevention device with inclined plane net prevention structure and roadbed wind and sand protection system | |
| JP5683151B2 (en) | Dust-proof net and dust-proof fence using the same | |
| JPS59118905A (en) | Shield apparatus for reducing wind velocity | |
| JP2003261910A (en) | Protective body using net and protective structure | |
| CN108049319A (en) | Suitable for the road dust storm countermeasure system and its construction method of rolling topography | |
| JP4478641B2 (en) | Snow fence | |
| US6401403B1 (en) | Storm shelter kit and method of assembly with means for selectably configuring a wind deflecting soil mound | |
| JPH01250507A (en) | Dust-proof, sand-proof, and snow-proof device at storing place of coal or the like | |
| KR100491346B1 (en) | Snow/sand protection fence | |
| JPH06264415A (en) | Prevention method of preventing surface soil from flying and muddy water on rainy day | |
| JPH0313122B2 (en) | ||
| JP2518547Y2 (en) | Snow fence | |
| JP3339847B2 (en) | Windproof net support structure | |
| JPS6123127B2 (en) | ||
| CN215976913U (en) | EASC system is with high vertical board sand barrier | |
| KR102580245B1 (en) | Roadside barriers to prevent icing on the road surface and block dust wind | |
| DE2616778A1 (en) | Roadside noise and dazzle screen wall - has pendulum hung absorbing elements opening in strong winds and has vertical stops | |
| KR100491349B1 (en) | wind and Snow/sand protection fence | |
| JP2004316496A (en) | Windbreak wall structure with windmill | |
| JP2003293366A (en) | Foundation structure of windbreak wall | |
| US3618276A (en) | Balloon-launching structure | |
| JP2005350886A (en) | Structure and construction method for net for protection against rock fall | |
| JP3082810B2 (en) | Fluid excitation force reduction device for structures |