JPH08206624A - Structure of waste burying disposal station - Google Patents
Structure of waste burying disposal stationInfo
- Publication number
- JPH08206624A JPH08206624A JP7016175A JP1617595A JPH08206624A JP H08206624 A JPH08206624 A JP H08206624A JP 7016175 A JP7016175 A JP 7016175A JP 1617595 A JP1617595 A JP 1617595A JP H08206624 A JPH08206624 A JP H08206624A
- Authority
- JP
- Japan
- Prior art keywords
- water
- permeable member
- waste
- permeable
- hole
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、廃棄物埋設処分場の構
造に関するものである。さらに詳しくは本発明は、作業
性に優れ、下部に設けられる遮水シートの損傷の危険性
が少ないため、有害物質等による環境の汚染等がおさえ
られ、しかも低コストで構築可能である廃棄物埋設処分
場の構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a waste landfill site. More specifically, the present invention has excellent workability and has a low risk of damaging the water-blocking sheet provided below, so that environmental pollution due to harmful substances and the like can be suppressed, and the waste can be constructed at low cost. It concerns the structure of the landfill site.
【０００２】[0002]
【従来の技術】現在、焼却灰、不燃物、可燃物、産業廃
材等の産業廃棄物は、廃棄物埋設処分場にもちこまれ、
そこで地盤を掘削して設けられた孔部に捨てられ埋設さ
れている。図６に示されているように、一般的な廃棄物
埋設処分場１１は、次のような構造を有している。 （i）地盤を掘削して大きな孔部１２を設け；（ii）廃
棄物および汚水等が孔部１２から直接流れ出ないように
するために、その孔部の内部表面全体に遮水シート１４
が敷設され；（iii）遮水シート１４の上部には、遮水
シート１４の保護および浄化排水を兼ねた砂１５が５０
〜６０cmの厚さに積層され；（iv）孔部１２の底部に
は、集まった排水を外部に排出するための集中排水用パ
イプ１６が設置されている。そして廃棄物が孔部１２の
中で３m程堆積すると、その上にさらに浄化排水のため
の砂が５０〜６０cmの厚さの層として設けながら使用さ
れている。2. Description of the Related Art At present, industrial wastes such as incinerated ash, incombustibles, combustibles, and industrial wastes are brought to waste disposal sites.
Therefore, it is abandoned and buried in the hole provided by excavating the ground. As shown in FIG. 6, the general waste landfill disposal site 11 has the following structure. (I) Excavation of the ground to provide a large hole 12; (ii) In order to prevent waste, sewage, etc. from directly flowing out of the hole 12, a water-blocking sheet 14 is provided on the entire inner surface of the hole.
(Iii) On the upper part of the impermeable sheet 14, there is 50 sand 15 which protects the impermeable sheet 14 and also serves as purified wastewater.
Laminated to a thickness of -60 cm; (iv) a concentrated drainage pipe 16 for discharging collected drainage to the outside is installed at the bottom of the hole 12. Then, when the waste is deposited in the hole 12 by about 3 m, sand for purification and drainage is further provided thereon as a layer having a thickness of 50 to 60 cm.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、砂は一
般的に約１,６００kg／m3と重く、下部の遮水シートを
損傷し、その結果有害物質による環境の汚染が生じると
いう問題が起こりやすい。とくに地盤が岩盤の場合は一
層遮水シートが損傷しやすい。またこのように重い砂で
５０〜６０cmもの層を設けることは、作業性が著しく悪
く、コストもかかり、孔部の体積を減少させるため埋設
処分量も少なくなる。また、図６のように、孔部の傾斜
面に砂の層を設けることは非常に困難であり、降雨時に
砂が滑り落ち、遮水シートが露出し、何らかの原因でこ
れが破れる恐れもある。さらに、現実問題として砂の運
搬車によって遮水シートが破られることも度々ある。However, sand is generally heavy at about 1,600 kg / m 3 and damages the lower water-blocking sheet, resulting in a problem that environmental pollution is caused by harmful substances. . Especially when the ground is rock, the impermeable sheet is more likely to be damaged. Further, providing a layer of 50 to 60 cm with such heavy sand is extremely inferior in workability, is costly, and reduces the volume of the hole portion, thus reducing the amount of burial disposal. Further, as shown in FIG. 6, it is very difficult to provide a sand layer on the inclined surface of the hole, and the sand slides down during rainfall, the water-blocking sheet is exposed, and there is a risk that it will break for some reason. Furthermore, as a practical matter, the water-barrier sheet is often broken by a sand carrier.
【０００４】本発明は、上記のような従来の課題を解決
し、作業性に優れ、下部に設けられる遮水シートの損傷
の危険性も少なく、しかも低コストで構築可能である廃
棄物埋設処分場の構造を提供することを目的とするもの
である。The present invention solves the above-mentioned conventional problems, is excellent in workability, has less risk of damage to the water-blocking sheet provided below, and can be constructed at a low cost. The purpose is to provide the structure of the field.
【０００５】[0005]
【課題を解決するための手段】本発明者らは鋭意検討の
結果、上記のような従来の課題を解決することができ
た。すなわち本発明は、地盤を掘削して設けられた孔
部、該孔部の内部表面に敷設された遮水シート、および
該遮水シートの上部に敷設された、互いに連通した空隙
を有し且つその空隙率が５〜９０％である透水性部材の
層を有することを特徴とする、廃棄物埋設処分場の構造
を提供するものである。As a result of earnest studies, the present inventors were able to solve the above-mentioned conventional problems. That is, the present invention has a hole provided by excavating the ground, a water impervious sheet laid on the inner surface of the hole, and a void communicating with each other laid on the upper part of the water impervious sheet, The present invention provides a structure of a waste landfill site, which is characterized by having a layer of a water permeable member having a porosity of 5 to 90%.
【０００６】また本発明は、透水性部材の上部の面また
は全面に、フィルター材が設けられている、前記の構造
を提供するものである。The present invention also provides the above structure, wherein a filter material is provided on the upper surface or the entire surface of the water permeable member.
【０００７】さらに本発明は、透水性部材が、合成樹脂
発泡体から構成されている、前記の構造を提供するもの
である。Further, the present invention provides the above structure, wherein the water-permeable member is made of synthetic resin foam.
【０００８】さらにまた本発明は、透水性部材が、その
上下方向に貫通した孔を有し、且つ透水性部材の底部に
は溝部が設けられている、前記の構造を提供するもので
ある。Furthermore, the present invention provides the above structure, wherein the water permeable member has a hole penetrating in the vertical direction thereof, and a groove is provided at the bottom of the water permeable member.
【０００９】また本発明は、遮水シートの下部にも、透
水性部材が敷設されている、前記の構造を提供するもの
である。The present invention also provides the above structure, in which a water-permeable member is also laid under the water-blocking sheet.
【００１０】以下、本発明をさらに詳細に説明する。本
発明の廃棄物埋設処分場は、先に規定されているよう
に、孔部の内部表面に遮水シートを敷設し、該遮水シー
トの上部に排水良好な透水性部材を設けたものである。The present invention will be described in more detail below. In the waste burial disposal site of the present invention, a water-impervious sheet is laid on the inner surface of the hole, and a water-permeable member having good drainage is provided on the upper part of the water-impermeable sheet, as previously defined. is there.
【００１１】（透水性部材）本発明に用いることのでき
る透水性部材は、空隙率が５〜９０％であり、廃棄物か
らの排水等の液体を流通させることができ、且つ下部の
遮水シートを損傷させにくいものであれば、とくに制限
されないが、好適に用いることのできる部材について以
下に説明する。(Water-permeable member) The water-permeable member that can be used in the present invention has a porosity of 5 to 90%, allows liquid such as wastewater from waste to flow therethrough, and is water-permeable at the bottom. Members that can be suitably used will be described below, but are not particularly limited as long as the sheets are not easily damaged.
【００１２】なお、本発明における空隙率とは、製造さ
れた直方体の形状の透水性部材（縦ａcm、横ｂcm、高さ
ｃcm）を水槽（縦Ａcmおよび横Ｂcmを有する直方体の形
状）の水面下に沈めた際の水面が上昇した高さ（ｈcm）
を測定し、下式により算出したものである。The term "porosity" as used in the present invention means the produced water-permeable member in the shape of a rectangular parallelepiped (length acm, width bcm, height ccm) in the water surface of a water tank (the shape of a rectangular parallelepiped having length Acm and width Bcm). Height that the water surface rises when submerged (hcm)
Was measured and calculated by the following formula.
【００１３】[0013]
【数１】 [Equation 1]
【００１４】（合成樹脂発泡体からなる透水性部材）合
成樹脂発泡体は、軽量であるため作業性がよく、製造コ
ストもあまりかからないため好適に用いることができ
る。例えば、図２（ａ）に示されるように、合成樹脂発
泡体は、発泡ポリスチレン、発泡ポリエチレンまたは発
泡ポリプロピレン等の粒径２〜１０mmの発泡体粒子１８
を、接着剤１９（エポキシ系、ウレタン系、酢酸ビニル
系、アクリル系、ゴム系、アスファルト系）を介して、
または介さずに熱融着によって互いに連通した透水性の
空隙２０が形成されるように粒子表面同士を点接着して
なり、５〜９０％の空隙率を有する板状、ブロック状ま
たは多角柱状のものであることができる。このような発
泡体粒子１８の代わりに、非球形の図２（ｂ）に示した
ようなサドル状の発泡体チップ２１、例えば三菱化学ビ
ーエーエスエフ社製ＹＢチップ（商品名）を用い、これ
らの発泡体チップ２１を金型内に充填し、スチーム加熱
してこれら発泡体チップの面２２で互いに熱融着させ
て、細長い通水用の空隙２３が、前記と同様の空隙率で
形成されるようにしてもよい。また、さらには、一旦空
隙のない発泡体を成形した後にスリットまたは貫通孔を
設けて前記空隙率としたものや、発泡体成形中にスリッ
トまたは貫通孔を設けるものの、その部分以外は粒子同
士が実質上完全に融着されて、前記空隙率を備えたもの
等を用いてもよい。(Water-permeable member made of synthetic resin foam) The synthetic resin foam can be preferably used because it is lightweight and has good workability and does not require much manufacturing cost. For example, as shown in FIG. 2A, the synthetic resin foam is a foam particle 18 such as expanded polystyrene, expanded polyethylene, or expanded polypropylene having a particle diameter of 2 to 10 mm.
Via adhesive 19 (epoxy, urethane, vinyl acetate, acrylic, rubber, asphalt)
Alternatively, a plate-like, block-like, or polygonal column-like having a porosity of 5 to 90% is formed by spot-bonding the particle surfaces to each other so as to form the water-permeable voids 20 which are communicated with each other by thermal fusion. Can be one. Instead of such foam particles 18, a non-spherical saddle-shaped foam chip 21 as shown in FIG. 2 (b), for example, YB chip (trade name) manufactured by Mitsubishi Chemical BSF, is used. The foam chips 21 are filled in a mold, steam-heated and heat-bonded to each other on the surfaces 22 of these foam chips to form elongated water-permeable voids 23 with the same porosity as described above. You may do it. Further, further, after forming a foam having no voids once to provide a slit or through hole to have the above-mentioned porosity, or to provide a slit or a through hole during foam molding, but particles other than that portion It is also possible to use a material which is substantially completely fused and has the above-mentioned porosity.
【００１５】上記のようにして得られた合成樹脂発泡体
からなる透水性部材は、空隙率が５〜９０％、好ましく
は２０〜５０％を有するものである。The water permeable member made of the synthetic resin foam obtained as described above has a porosity of 5 to 90%, preferably 20 to 50%.
【００１６】また、上記のようにして得られた合成樹脂
発泡体からなる透水性部材は、強度の面から、嵩密度が
８〜１００kg／m3、一般的には耐圧性、経済性および作
業性の観点から２０〜５０kg／m3のものが使用される。
従って従来から使用されてきた砂の１６００kg／m3と比
べて非常に軽く、人手による敷設が簡単に行える。From the viewpoint of strength, the water-permeable member made of the synthetic resin foam obtained as described above has a bulk density of 8 to 100 kg / m 3 , generally pressure resistance, economical efficiency and workability. From the viewpoint of sex, those having 20 to 50 kg / m 3 are used.
Therefore, it is much lighter than the conventionally used sand of 1600 kg / m 3 and can be easily installed manually.
【００１７】合成樹脂発泡体からなる透水性部材の圧縮
強度は、廃棄物の種類や使用場所等により適宜選択する
ことが好ましい。また圧縮強度は、透水性部材の嵩密度
を８〜６０kg／m3に制御することにより調整することが
できる。例えば圧縮強度（ＪＩＳ Ａ９５１１）は、
５.０％歪時で３.０〜３５ｔ／m2が望ましい。さらに具
体的には、発泡粒子を接着剤を介して互いに連通した空
隙を有した透水性部材では、５.０％歪時で、嵩密度が
３２kg／m3の透水性部材の場合、４ｔ／m2の圧縮強度を
付与することができ、また嵩密度が４６kg／m3の透水性
部材の場合、５.５ｔ／m2の圧縮強度を付与することが
できる。The compressive strength of the water-permeable member made of synthetic resin foam is preferably selected depending on the type of waste and the place of use. The compressive strength can be adjusted by controlling the bulk density of the water permeable member to 8 to 60 kg / m 3 . For example, the compressive strength (JIS A9511) is
At a strain of 5.0%, 3.0 to 35 t / m 2 is desirable. More specifically, in a water permeable member having voids in which foamed particles are communicated with each other via an adhesive, at a strain rate of 5.0%, in the case of a water permeable member having a bulk density of 32 kg / m 3 , 4 t / A compressive strength of m 2 can be imparted, and in the case of a water-permeable member having a bulk density of 46 kg / m 3 , a compressive strength of 5.5 t / m 2 can be imparted.
【００１８】合成樹脂発泡体からなる透水性部材のサイ
ズは、廃棄物埋設処分場の条件、作業性、通水性、断熱
性等を考慮して適宜決定すればよいが、例えば縦２００
cm×横９０cm×厚み０.０１〜５０cm、通常３〜３０cm
のものが適当である。The size of the water permeable member made of synthetic resin foam may be appropriately determined in consideration of the conditions of the waste burial site, workability, water permeability, heat insulation, etc.
cm x width 90 cm x thickness 0.01 to 50 cm, usually 3 to 30 cm
The ones are suitable.
【００１９】合成樹脂発泡体からなる透水性部材の形状
は、とくに制限されないが、最も簡単な形状としては、
立方体、直方体等が挙げられる。また、相対する二面が
平行に傾斜していてもよく、また相じゃくり構造になっ
ていてもよい。The shape of the water-permeable member made of synthetic resin foam is not particularly limited, but the simplest shape is as follows.
Examples include a cube and a rectangular parallelepiped. Further, the two opposing surfaces may be inclined parallel to each other, or may have a phase-shift structure.
【００２０】このような合成樹脂発泡体からなる透水性
部材の透水係数は、１×１０-1〜５×１０0cm／秒程度
と良好である。これは砂の１×１０-3〜１×１０-1cm／
秒に比べても、排水性が良好であることが分かる。な
お、透水係数は水の通り易さを示す値である。The water permeability of the water permeable member made of such synthetic resin foam is as good as about 1 × 10 −1 to 5 × 10 0 cm / sec. This is 1 × 10 -3 to 1 × 10 -1 cm / of sand
It can be seen that the drainage property is better than the second. The water permeability coefficient is a value indicating the ease of passing water.
【００２１】さらに、合成樹脂発泡体からなる透水性部
材は、その透水性をさらに高めるために、図３に示すよ
うに透水性部材３の底面に液体の流通可能な溝部２５を
設けることができる。溝部２５と併せて透水性部材を貫
通する孔部２６を設ければ、透水性が一段と高まること
になり好ましい。この場合、前記孔部２６は、溝部２５
と連結しているほうが、透水性が高まる。孔部２６の開
口部の形状としては、円形、楕円形、長方形等が挙げら
れる。孔部２６のサイズは、用いる透水性部材の大きさ
等に依存するものであるが、一般的には円形として、直
径が２〜３０mm程度である。また溝部２５としては、通
常幅１０〜２００mm、深さ５〜１００mm程度がよい。Further, in the water permeable member made of synthetic resin foam, in order to further enhance the water permeability, a groove portion 25 through which liquid can flow can be provided on the bottom surface of the water permeable member 3 as shown in FIG. . It is preferable to provide the hole portion 26 that penetrates the water permeable member together with the groove portion 25 because the water permeability is further enhanced. In this case, the hole portion 26 is the groove portion 25.
The higher the permeability, the more connected it is. Examples of the shape of the opening of the hole 26 include a circle, an ellipse, and a rectangle. The size of the hole 26 depends on the size of the water-permeable member used, etc., but is generally circular and has a diameter of about 2 to 30 mm. Further, as the groove portion 25, a width of 10 to 200 mm and a depth of 5 to 100 mm are usually preferable.
【００２２】（フィルター材）本発明においては、図４
に示したように、透水性部材３の片面もしくは両面また
は側面を含めた全面にフィルター材３０を設け、廃棄物
から微細な有害物質が流出するのを防止することが好適
である。フィルター材３０は、廃棄物の種類、透水性部
材の形状等により適宜選択すればよいが、例えばポリエ
チレン、ポリプロピレン、ポリエステル、ナイロン製の
合成繊維や椰子繊維等からなるシート状物等が挙げられ
る。フィルター材３０の厚さは、通常、０.０１〜３cm
程度であるのがよい。フィルター材３０の寸法は、透水
性部材の特定面または全面を覆うことができればよい
が、隣接した透水性部材同士間の隙間から微細な有害物
質が漏れないように、図４に示したように隣接した透水
性部材に対する重ね合わせしろＤを設けることが望まし
い。なお、フィルター材としてシート状物を中心に説明
したが、砂、豆砂利、砕石、椰子殻炭、そだ等を積み重
ねるだけでフィルター材としてもよい。(Filter Material) In the present invention, FIG.
As shown in, it is preferable to provide the filter material 30 on the entire surface of the water permeable member 3, including one side or both sides, or side surfaces, to prevent the outflow of fine harmful substances from the waste. The filter material 30 may be appropriately selected depending on the type of waste, the shape of the water permeable member, and the like, and examples thereof include a sheet-shaped material made of polyethylene, polypropylene, polyester, nylon synthetic fibers, palm fibers, or the like. The thickness of the filter material 30 is usually 0.01 to 3 cm.
It should be about the degree. The size of the filter material 30 may be such that it can cover a specific surface or the entire surface of the water-permeable member, but as shown in FIG. 4, in order to prevent fine harmful substances from leaking from the gap between the adjacent water-permeable members. It is desirable to provide an overlapping margin D for adjacent water-permeable members. Although the sheet material is mainly described as the filter material, the filter material may be formed simply by stacking sand, pea gravel, crushed stone, coconut shell charcoal and soda.
【００２３】（上記以外の透水性部材）透水性部材とし
て、上記の合成樹脂発泡体以外のものを用いることもで
きる。例えば好ましくは、「擁壁用透水マット技術マニ
ュアル、建設省建設経済局民間宅地指導室監修、社団法
人建築研究振興協会発行、平成３年４月」に記載されて
いる透水マットを、透水性部材として用いることができ
る。この透水マットは、空隙の大きい芯材の外周に不織
布、編物、織物等の透水フィルターを巻いたもの、ある
いは二層構造で片面が透水可能な有孔シート上のもの等
がある。このタイプの透水性部材の寸法、形状は、とく
に制限されず、上記の合成樹脂発泡体からなる透水性部
材と同様なものであることができる。このタイプの透水
性部材は、具体的には、立体網状構造、リブ型立体構
造、板状ネット構造、ネット積層構造、不織布嵩上げ構
造等が挙げられる。また、これらのタイプの透水性部材
と、前記の合成樹脂発泡体からなる透水性部材とを併用
してもよいし、形状等の異なる非発泡体の透水性部材同
士、さらには形状等の異なる発泡体からなる透水性部材
同士を組み合わせて用いてもよい。(Water-permeable member other than the above) As the water-permeable member, a material other than the above synthetic resin foam can be used. For example, it is preferable to use a water-permeable mat described in "Technical Manual of Water-permeable Mat for Retaining Wall, Supervision of Private Housing Land Guidance Office, Ministry of Construction, Ministry of Construction, Published by Association of Building Research Promotion, April 1991" Can be used as This water-permeable mat may be a core material having large voids, which is wound with a water-permeable filter such as a non-woven fabric, a knitted fabric, or a woven fabric, or a perforated sheet having a two-layer structure and one side of which is water-permeable. The size and shape of the water permeable member of this type are not particularly limited, and may be the same as the water permeable member made of the synthetic resin foam. Specific examples of the water-permeable member of this type include a three-dimensional net structure, a rib-type three-dimensional structure, a plate net structure, a net laminated structure, and a non-woven fabric raised structure. Further, these types of water-permeable members may be used in combination with the above-mentioned synthetic resin foam water-permeable members, or non-foam water-permeable members having different shapes and the like, and further having different shapes and the like. The water-permeable members made of foam may be used in combination.
【００２４】なお、本発明に用いることのできる遮水シ
ートは、廃棄物由来の液体を遮断することができればよ
く、とくに制限されない。例えば、厚さ０.１５cmで、
塩化ビニル系、ゴム製等のシートが挙げられる。また、
本発明における孔部とは、廃棄物を埋設する空間を有し
ていればよく、その寸法、形状等はとくに制限されな
い。The water blocking sheet that can be used in the present invention is not particularly limited as long as it can block the liquid derived from waste. For example, with a thickness of 0.15 cm,
Examples include vinyl chloride-based and rubber sheets. Also,
The hole in the present invention has only to have a space for burying waste, and its size, shape, etc. are not particularly limited.
【００２５】図１に示されるような本発明の構造を有す
る廃棄物埋設処分場１を構築するには、通常、次のよう
な方法がとられる（図１参照）。 （i）適当な手段により地盤を掘削し、廃棄物を埋設処
理するのに十分な孔部２を設ける；（ii）孔部２の全体
に遮水シート４を敷設する。孔部２の底部には、集中排
水用パイプ１６を設ける；（iii）遮水シート４の上部
に、透水性部材３を敷設する。なお、必要に応じて、あ
らかじめフィルター材が設けられた透水性部材３を敷設
する；あるいは透水性部材を敷設した後に、フィルター
材をその上部に設ける。In order to construct the waste burial disposal site 1 having the structure of the present invention as shown in FIG. 1, the following method is usually adopted (see FIG. 1). (I) Excavate the ground by an appropriate means and provide holes 2 sufficient for burying wastes; (ii) Laying a water-impervious sheet 4 over the holes 2. A concentrated drainage pipe 16 is provided on the bottom of the hole 2. (iii) The water-permeable member 3 is laid on the top of the water-blocking sheet 4. If necessary, the water-permeable member 3 provided with a filter material in advance is laid; or, after the water-permeable member is laid, the filter material is provided on the upper portion thereof.
【００２６】なお、地盤が岩盤で遮水シートの損傷の恐
れがある場合は、地盤を掘削して孔部を設けたのち、ま
ず透水性部材を敷設し、その上部に遮水シートを敷設
し、さらにこの遮水シートの上部に再度透水性部材を敷
設してもよい。このようにすると、堅く鋭い岩盤と遮水
シートとが直接接触することなく、遮水シートの損傷の
可能性が軽減されるので望ましい。If the ground is rocky and there is a risk of damage to the water impermeable sheet, the ground is excavated to form a hole, then the water permeable member is first laid, and then the water impermeable sheet is laid on top of it. Further, a water permeable member may be laid again on the upper portion of the water impervious sheet. This is desirable because the hard and sharp rock and the water blocking sheet do not come into direct contact with each other, and the possibility of damage to the water blocking sheet is reduced.
【００２７】実際に廃棄物を埋設するときは、本発明の
構造を有する処分場に、廃棄物を一杯になるまで入れて
もよいが、廃棄物が３m程度積層されたところで、その
上に透水性部材を平面状に敷設するのがよい。この場
合、平面状に敷設された透水性部材の排水性を良好にす
るために、図５に開示したとおりに、平面状に敷設され
た透水性部材間を、上下方向に連通させるためにさらに
透水性部材を部分的に設けるのが好ましい。When the waste is actually buried, the waste may be put into the disposal site having the structure of the present invention until the waste is filled up. However, when the waste is stacked for about 3 m, the water is permeable on the waste. The flexible member is preferably laid flat. In this case, in order to improve the drainability of the water-permeable member laid in a plane, as shown in FIG. 5, it is necessary to further connect the water-permeable members laid in a plane in the vertical direction. It is preferable to partially provide the water-permeable member.
【００２８】[0028]
【作用】本発明の構造は、従来の砂に比べてはるかに軽
量である透水性部材を用いているため、作業性に優れ、
また物理的強度にも優れている。また、従来砂を用いて
いたときは、５０〜６０cmも積層していたのに比べ、本
発明の場合は透水性部材を砂に比べて１／５〜１／３と
薄くすることができるため、有効埋設量が増加する。ま
た、孔部の傾斜面でも透水性部材が崩れ落ちることはな
く、従来砂を使用した際には生じていた、処理施設への
砂の流入、それに伴う施設への悪影響、機械設備への支
障をもたらすことがない。The structure of the present invention uses a water-permeable member, which is much lighter than conventional sand, and therefore has excellent workability,
It also has excellent physical strength. Further, in the case where the conventional sand is used, the water-permeable member can be made thinner by 1/5 to 1/3 than the sand in the case of the present invention as compared with the case where 50 to 60 cm is laminated. , The amount of effective burial increases. In addition, the water-permeable member does not collapse even on the inclined surface of the hole, which causes the inflow of sand into the treatment facility, the adverse effect on the facility, and the obstacles to mechanical equipment, which occurred when using conventional sand. Never bring.
【００２９】[0029]
【実施例】以下、本発明を実施例により説明する。実施例 １ 焼却灰等の最終処分場を想定した試験として、４m×４m
×深さ３mの孔部を掘削して設けた。孔部の内部表面全
体にポリ塩化ビニル系の遮水シートを敷設した。透水性
部材としては、空隙率３５％、嵩密度４６kg／m3、縦
０.９m×横２.０m×厚さ０.２mの直方体の形状の合成樹
脂発泡体とした。この透水性部材の上部に、フィルター
材としてポリプロピレン製の不織布を、重ね合わせしろ
Ｄを１０cmとして設けた。この透水性部材を、遮水シー
ト上に隙間なく敷設した。なお、不織布の重ね合わせし
ろは、隣接する透水性部材間の隙間から有害物質が流出
しないように、透水性部材同士でしっかりと重ね合わせ
た。なお、孔部の傾斜面に用いた透水性部材の嵩密度
は、空隙率３７％、３２kg／m3、サイズは縦０.９m×横
２.０m×厚さ０.１mの直方体で、透水性部材同士でしっ
かりと重ね合わせた。続いて焼却灰等を孔部の底部から
徐々に捨てていった。焼却灰等が２m程度積層したと
き、空隙率３５％、嵩密度４６kg／m3で、縦０.９m×横
２.０m×厚さ０.２mの透水性部材（この透水性部材に
は、フィルター材としてポリプロピレン製の不織布が設
けられていた）を敷設した。その後、土砂を約３０cm程
度おいたところ若干の焼却灰の沈下が生じたが、排水機
能等には全く問題がなかった。The present invention will be described below with reference to examples. Example 1 As a test assuming a final disposal site for incinerated ash, etc., 4m x 4m
C. A hole having a depth of 3 m was excavated and provided. A polyvinyl chloride water impermeable sheet was laid on the entire inner surface of the hole. The water-permeable member was a rectangular parallelepiped synthetic resin foam having a porosity of 35%, a bulk density of 46 kg / m 3 , a length of 0.9 m, a width of 2.0 m, and a thickness of 0.2 m. On the upper part of this water-permeable member, a polypropylene non-woven fabric was provided as a filter material with a margin D of 10 cm. This water-permeable member was laid on the water-impervious sheet without any space. The overlapping margins of the non-woven fabrics were firmly overlapped between the water-permeable members so that harmful substances would not flow out from the gaps between the adjacent water-permeable members. The bulk density of the water-permeable member used for the inclined surface of the hole is a porosity of 37%, 32 kg / m 3 , and the size is a rectangular parallelepiped having a length of 0.9 m × width of 2.0 m × thickness of 0.1 m. I firmly overlapped each other. Subsequently, the incinerated ash and the like were gradually discarded from the bottom of the hole. When incinerated ash or the like is laminated for about 2 m, it has a porosity of 35%, a bulk density of 46 kg / m 3 , a length of 0.9 m × width of 2.0 m × thickness of 0.2 m. A non-woven fabric made of polypropylene was provided as a filter material). After that, when the earth and sand was placed about 30 cm, some incineration ash subsided, but there was no problem with the drainage function or the like.
【００３０】[0030]
【発明の効果】本発明によれば、従来の砂に代わり軽量
の透水性部材を用いているので、作業性に優れ、下部に
設けられる遮水シートの損傷の危険性も少なく、しかも
低コストで構築可能である上、透水性部材が砂のように
流出しやすくないため、長期にわたって排水性を維持す
ることができる廃棄物埋設処分場の構造が提供される。According to the present invention, since a lightweight water-permeable member is used in place of conventional sand, workability is excellent, the risk of damage to the water-blocking sheet provided below is low, and the cost is low. The structure of the waste burial site which can maintain the drainage property for a long period of time is provided because the water permeable member does not easily flow out like sand as it can be constructed by.
【図１】本発明の廃棄物埋設処分場の構造を説明するた
めの図である。FIG. 1 is a diagram for explaining the structure of a waste burial disposal site of the present invention.
【図２】（ａ）および（ｂ）ともに、本発明における合
成樹脂発泡体からなる透水性部材の発泡粒子の部分拡大
図である。2 (a) and (b) are partially enlarged views of expanded particles of a water-permeable member made of a synthetic resin foam according to the present invention.
【図３】本発明における透水性部材の一実施例を示す斜
視図である。FIG. 3 is a perspective view showing an embodiment of a water-permeable member according to the present invention.
【図４】本発明における透水性部材の他の一実施例を示
す側面図である。FIG. 4 is a side view showing another embodiment of the water-permeable member according to the present invention.
【図５】本発明の廃棄物埋設処分場の構造を説明するた
めの図である。FIG. 5 is a diagram for explaining the structure of a waste burial disposal site of the present invention.
【図６】従来の廃棄物埋設処分場の構造を説明するため
の図である。FIG. 6 is a diagram for explaining the structure of a conventional waste burial site.
１，１１ 廃棄物埋設処分場 ２，１２ 孔部 ３ 透水性部材 ４，１４ 遮水シート １５ 砂 １６ 集中排水用パイプ １８ 発泡体粒子 １９ 接着剤 ２０，２３ 空隙 ２５ 溝部 ２６ 孔 ３０ フィルター材 Ｄ 重ね合わせしろ 1,11 Waste burial site 2,12 Hole part 3 Water permeable member 4,14 Water barrier sheet 15 Sand 16 Concentrated drainage pipe 18 Foam particles 19 Adhesive 20,23 Void 25 Groove 26 Hole 30 Filter material D Stack Align
フロントページの続き (72)発明者 中島 忠敏 埼玉県三郷市谷口612−11 シマチュウ株 式会社内 (72)発明者 藤田 操一 千葉県美浜区幸町１−７−１−1012 有限 会社藤産商内 (72)発明者 塩坂 健 東京都千代田区丸の内二丁目５番２号 三 菱化学株式会社内 (72)発明者 今村 時次 三重県四日市市川尻町1000番地 三菱化学 ビーエーエスエフ株式会社内Front page continued (72) Inventor Tadatoshi Nakajima 612-11 Taniguchi, Misato City, Saitama Shimachu Co., Ltd. (72) Inventor Ryoichi Fujita 1-7-1-1012 Sachimachi, Mihama-ku, Chiba Fujisansho Co., Ltd. (72) Inventor Ken Shiozaka 2-5-2 Marunouchi, Chiyoda-ku, Tokyo Sanryo Chemical Co., Ltd. (72) Inventor Tokuji Imamura 1000 Kawajiri-cho, Yokkaichi-shi, Mie Mitsubishi Chemical BSF
Claims (5)
水シートの上部に敷設された、互いに連通した空隙を有
し且つその空隙率が５〜９０％である透水性部材の層を
有することを特徴とする、廃棄物埋設処分場の構造。1. A hole having a hole formed by excavating the ground, a water impervious sheet laid on an inner surface of the hole, and a void communicating with each other laid on an upper portion of the water impervious sheet. A structure of a waste landfill site, which has a layer of a water permeable member having a porosity of 5 to 90%.
ィルター材が設けられている、請求項１に記載の構造。2. The structure according to claim 1, wherein a filter material is provided on the upper surface or the entire surface of the water-permeable member.
されている、請求項１または２に記載の構造。3. The structure according to claim 1, wherein the water-permeable member is made of synthetic resin foam.
孔を有し、且つ透水性部材の底部には溝部が設けられて
いる、請求項３に記載の構造。4. The structure according to claim 3, wherein the water permeable member has a hole penetrating in the vertical direction, and a groove is provided at the bottom of the water permeable member.
設されている、請求項１ないし４のいずれか１項に記載
の構造。5. The structure according to any one of claims 1 to 4, wherein a water-permeable member is also laid under the water-blocking sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01617595A JP3557268B2 (en) | 1995-02-02 | 1995-02-02 | Structure of waste disposal site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01617595A JP3557268B2 (en) | 1995-02-02 | 1995-02-02 | Structure of waste disposal site |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08206624A true JPH08206624A (en) | 1996-08-13 |
| JP3557268B2 JP3557268B2 (en) | 2004-08-25 |
Family
ID=11909179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01617595A Expired - Fee Related JP3557268B2 (en) | 1995-02-02 | 1995-02-02 | Structure of waste disposal site |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3557268B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005313105A (en) * | 2004-04-30 | 2005-11-10 | Taiyo Kogyo Co Ltd | Disposal site having circulation system for improving semi-aerobic state |
-
1995
- 1995-02-02 JP JP01617595A patent/JP3557268B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005313105A (en) * | 2004-04-30 | 2005-11-10 | Taiyo Kogyo Co Ltd | Disposal site having circulation system for improving semi-aerobic state |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3557268B2 (en) | 2004-08-25 |
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