JPH09174012A - Protective structure of water barrier sheet in waste disposal field - Google Patents

Protective structure of water barrier sheet in waste disposal field

Info

Publication number
JPH09174012A
JPH09174012A JP34367195A JP34367195A JPH09174012A JP H09174012 A JPH09174012 A JP H09174012A JP 34367195 A JP34367195 A JP 34367195A JP 34367195 A JP34367195 A JP 34367195A JP H09174012 A JPH09174012 A JP H09174012A
Authority
JP
Japan
Prior art keywords
sheet
reticulated
water
mat
waste
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.)
Pending
Application number
JP34367195A
Other languages
Japanese (ja)
Inventor
Michihiko Ishida
道彦 石田
Takeshi Kawaguchi
武志 河口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Obayashi Corp
Taiyo Kogyo Co Ltd
Original Assignee
Obayashi Corp
Taiyo Kogyo Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Obayashi Corp, Taiyo Kogyo Co Ltd filed Critical Obayashi Corp
Priority to JP34367195A priority Critical patent/JPH09174012A/en
Publication of JPH09174012A publication Critical patent/JPH09174012A/en
Pending legal-status Critical Current

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/30Landfill technologies aiming to mitigate methane emissions

Landscapes

  • Processing Of Solid Wastes (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide the protective structure of a water barrier sheet in a waste disposal field composed of a substitute of an old tatami mat (rush mat) not generating excessive tensile load in the water barrier sheet laid on a slop part, easy to obtain and capable of stabilizing waste. SOLUTION: In a protective structure 12 for protecting the water barrier sheet 11 laid on the normal plane 13 of a waste disposal field 10, a plurality of sheets 14 fitted with reticulated mats 19 having a luffa structure fixed to the surfaces thereof are arranged so that the reticulated mats 19 are positioned on an upper surface side and the lower end parts 16 of the sheets fitted with the reticulated mats positioned on the upstream side at the respective connection parts 15 of the normal plane 13 are overlapped with the upper surfaces of the upper end parts 17 of the sheets fitted with the reticulated mats positioned on the downstream side and the upper end parts of the sheets fitted with the reticulated mats are temporarily bonded to the laid water barrier sheet, for example, by using a double-sided adhesive tape 22 to cover the surface of the water barrier sheet and continuously arranged in a tile-like form.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】この発明は、廃棄物処分場に
おける遮水シートの保護構造に関し、特に、廃棄物最終
処分場の斜面部分に敷設される遮水シートを保護するた
めの遮水シートの保護構造に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective structure for a water blocking sheet in a waste disposal site, and more particularly to a water blocking sheet for protecting a water blocking sheet laid on a slope of a waste final disposal site. Regarding protection structure.

【0002】[0002]

【従来の技術】産業廃棄物や一般廃棄物を投棄するため
の施設である埋立型の廃棄物処分場として、例えば山間
部に形成されている凹部を整地して利用するものや、山
間部や平野部等に新たに凹部を掘削形成して埋立処分場
とするものなどが知られているが、このような廃棄物最
終処分場では、処分場に投棄された廃棄物から浸出する
汚水が地中に浸透して周囲の地盤を汚染するのを防止す
るために、これらの処分場の底面および斜面(全面)に
遮水工を施工することが義務づけられている。
2. Description of the Related Art As a landfill type waste disposal site, which is a facility for dumping industrial waste and general waste, for example, one in which a recess formed in a mountain area is leveled and used, a mountain area or It is known that new land will be excavated to form a landfill disposal site in a plain, etc., but at such a final landfill site, wastewater leached from the waste dumped at the disposal site will be grounded. In order to prevent it from penetrating inside and contaminating the surrounding ground, it is obligatory to construct a water shield on the bottom surface and slope (entire surface) of these disposal sites.

【0003】そして、このような遮水工として、従来よ
り、確実性、施工性、経済性等の観点から、軟質の合成
樹脂系あるいはゴム系の遮水シートを処分場の底面およ
び斜面(全面)に敷設するとともに、例えば廃棄物中の
突起物との接触などによりこれらの遮水シートが損傷す
るのを防止するために、一般に、敷設した遮水シートの
表面に、例えば厚さ30〜50cm程度の砂質土等から
からなる保護砂や、保護マットをさらに敷設して、廃棄
物が投棄される際に、かかる廃棄物と遮水シートとの間
にこれらの保護砂や保護マットが介装し、廃棄物と遮水
シートとが直接接触するのを回避するようにする構成が
採用されている。
From the viewpoint of reliability, workability, economical efficiency, etc., as such a water shield work, a soft synthetic resin or rubber water shield sheet has been used for the bottom surface and slope (whole surface) of the repository. In order to prevent these water-impervious sheets from being damaged due to, for example, contact with projections in waste, the surface of the laid water-impervious sheet generally has a thickness of, for example, 30 to 50 cm. When further laying protective sand consisting of sandy soil or the like, or a protective mat, and the waste is dumped, these protective sand and the protective mat are interposed between the waste and the water blocking sheet. The structure is adopted so as to avoid direct contact between the waste and the water blocking sheet.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、上記従
来の保護砂や保護マットにより遮水シートを保護する方
法によれば、特に廃棄物処分場の外周部分などに位置す
る、周囲の地盤へのすり付け部分を構成する斜面部分に
おいては、いずれも、投棄された廃棄物の圧縮沈下に伴
って、遮水シートが、これらの保護砂や保護マットを介
して下方に引っぱり込まれるような形となり、遮水シー
トに過大な引張り荷重が作用することになってたるみや
破損が生じやすくなるという課題があった。
However, according to the above-mentioned conventional method of protecting the water-impervious sheet with the protective sand or the protective mat, it is possible to rub against the surrounding ground located especially in the outer peripheral portion of the waste disposal site. In the slope part that constitutes the attachment part, in each case, the impermeable sheet is pulled downward through these protective sands and protective mats as the dumped waste is compressed and settled, There was a problem that slack and breakage were likely to occur due to an excessive tensile load being applied to the water shield sheet.

【0005】一方、こような斜面部分に敷設された遮水
シートを保護するための、遮水シートを下方に引っぱり
込みにくいような材料として、古タタミを使用し、廃棄
物が斜面部分に沿って堆積されてくるのに伴って、順次
これを敷設してゆく方法も考えられているが、これは応
急的な処置に過ぎず、十分な量の古タタミを調達するの
が困難であることに加えて、古タタミ自体が廃棄物とな
るため処分場の安定化を阻害する原因となるという課題
があった。
On the other hand, the old tatami is used as a material for protecting the water blocking sheet laid on such a sloped part, which is difficult to pull the water blocking sheet downward, and the waste is along the sloped part. It is considered that the method of laying these one after another as they are accumulated is just a temporary measure, and it is difficult to procure a sufficient amount of old Tatami. In addition, since the old tatami itself becomes a waste, there is a problem that it hinders the stabilization of the repository.

【0006】そこで、この発明は、上記従来の課題に着
目してなされたもので、斜面部分に敷設した遮水シート
に過大な引張り荷重を生じさせることがなく、入手が容
易でしかも廃棄物の安定化をも図ることが可能な、古タ
タミの代替物による廃棄物処分場における遮水シートの
保護構造を提供することを目的とするものである。
Therefore, the present invention has been made in view of the above-mentioned conventional problems. It does not cause an excessive tensile load on the water-blocking sheet laid on the sloped portion, is easily available, and is a waste product. It is an object of the present invention to provide a protective structure for a water-blocking sheet at a waste disposal site by using an alternative to old Tatami that can also be stabilized.

【0007】[0007]

【課題を解決するための手段】この発明は、上記目的を
達成するためになされたもので、その要旨は、廃棄物処
分場の斜面部分に敷設される遮水シートを保護するため
の保護構造であって、多数の線条が不規則な多数のルー
プをなして絡み合うヘチマ構造を網状マットとして表面
に固着した複数の網状マット付シートを、前記網状マッ
トが上面側に位置するようにした状態で、かつ前記斜面
部分における傾斜方向の各接続部分において上流側に位
置する網状マット付シートの下端部分を下流側に位置す
る網状マット付シートの上端部分の上面に重ねて配置す
るとともに、この網状マット付シートの上端部分を敷設
した遮水シートに各々仮止めしつつ、前記遮水シートの
表面を覆って屋根瓦状に連続配設することを特徴とする
廃棄物処分場における遮水シートの保護構造にある。
The present invention has been made in order to achieve the above object, and the gist thereof is a protective structure for protecting a water-blocking sheet laid on a slope portion of a waste disposal site. A sheet with a plurality of reticulated mats fixed on the surface as a reticulated mat having a loofah structure in which a large number of filaments are entangled to form a loop, and the reticulated mat is positioned on the upper surface side. In addition, the lower end portion of the reticulated matted sheet located on the upstream side in each connecting portion in the slanting direction of the inclined surface portion is arranged so as to overlap the upper surface of the upper end portion of the reticulated matted sheet located on the downstream side, and the reticulated At the waste disposal site, which is characterized in that the upper end of the matted sheet is temporarily fixed to the laid water-impervious sheet, respectively, and is continuously arranged in the shape of a roof tile while covering the surface of the water-impervious sheet. In the protection structure of the water-impervious sheet that.

【0008】なお、上記記載における網状マットは、例
えば耐食性に富んだ金属製や樹脂製の多数の連続線条に
より構成され、連続線条の太さや強度、目付等を調整す
ることにより、所望の圧縮強度及び空隙率を得て、廃棄
物等による上載荷重により潰されることなく、これに抵
抗しつつ遮水シートの上面に所定の厚さの空隙を保持す
るものである。
The reticulated mat in the above description is composed of, for example, a large number of continuous filaments made of metal or resin having high corrosion resistance, and the desired thickness can be obtained by adjusting the thickness, strength, and basis weight of the continuous filaments. The compressive strength and the porosity are obtained, and without being crushed by the top load due to waste or the like, the proof has a vacant space having a predetermined thickness on the upper surface of the water-blocking sheet while resisting the crushing load.

【0009】また、上記記載において、仮止めとは、網
状マット付シートが熱溶着等により遮水シートに一体と
して固着されることがなく、所定の大きさの引張り荷重
等が負荷されると、その固定状態が容易に解除されるよ
うな、一時的な固定状況を意味し、例えば、接着剤や接
着テープ等を用いることにより、容易に仮止め状態とす
ることができる。なお、固定状態が解除される所定の大
きさの荷重は、廃棄物の種類や斜面部分の勾配等に応じ
て適宜設計されるもので、かかる設計荷重に応じて、各
種の接着剤や接着テープ等による仮止めのための手段や
固定強度が選定されることになる。
Further, in the above description, the term "temporary fixing" means that a sheet with a net-like mat is not integrally fixed to the impermeable sheet by heat welding or the like, and a tensile load of a predetermined size is applied. This means a temporary fixed state in which the fixed state is easily released, and the temporary fixed state can be easily obtained by using, for example, an adhesive or an adhesive tape. It should be noted that the load of a predetermined size at which the fixed state is released is appropriately designed according to the type of waste, the slope of the slope, etc., and various adhesives or adhesive tapes are used according to the design load. Means for temporary fixing and fixing strength by means such as the above will be selected.

【0010】そして、この発明の遮水シートの保護構造
は、前記各網状マット付シートが、これの表面を覆う防
砂用シートを備えていることが好ましい。
In the water barrier sheet protective structure of the present invention, it is preferable that each of the reticulated matted sheets is provided with a sandproof sheet covering the surface thereof.

【0011】ここで、防砂用シートは、例えば目の細か
い格子状にあんだ網の目状のシート部材からなるもの
で、網状マットによる空隙が目詰りするのを防止すべ
く、廃棄物や堆積土砂からの粒径の大きな砂粒分や個形
分が、網状マットへ侵入しようとするのを防止するもの
である。
Here, the sand-preventing sheet is made of, for example, a mesh-like sheet member having a fine grid pattern, and waste and accumulated matter are prevented in order to prevent clogging of voids by the mesh mat. It prevents the sand particles and individual particles having a large particle size from the earth and sand from invading the reticulated mat.

【0012】そして、この発明の遮水シートの保護構造
によれば、網状マット付シートは、多数の連続線条が不
規則な多数のループをなして絡み合うヘチマ構造によっ
て相当の厚さを保持することにより、遮水シートと廃棄
物との直接の接触を回避して遮水シートの破損を防止す
る。
Further, according to the protective structure for a water-blocking sheet of the present invention, the reticulated matted sheet maintains a considerable thickness by the loofah structure in which a large number of continuous filaments are intertwined in the form of a large number of irregular loops. As a result, direct contact between the water-impervious sheet and waste is avoided and damage to the water-impermeable sheet is prevented.

【0013】また、複数の網状マット付シートが、各網
状マット付シートの上端部分を遮水シートに仮止めしつ
つ、遮水シートの表面を覆って屋根瓦状に連続配設され
ているので、投棄された廃棄物が圧密等により沈下する
場合でも、この沈下する廃棄物の引き込み荷重によって
網状マット付シートの固定が容易に解除され、網状マッ
ト付シートは、遮水シートを引き込むことなくその表面
に沿ってスムースに下方にスライド移動することにより
(遮水シートが引き込まれない理由は、網状マットと廃
棄物とは、網状マットの凹凸により摩擦力が大きく、遮
水シートと網状マット付シートとは、シートとシートの
接触であるため摩擦力が小さいからである。)、遮水シ
ートに過度の引張り荷重によるたるみや損傷が生じるの
を回避する。なお、接続部分の重ねしろを十分にとって
おくことにより、固定状態が解除されて、下流側の網状
マット付シートのみが下方にスライド移動する場合で
も、所定の重ねしろを確保して、遮水シートを屋根瓦状
に覆った状態を容易に保持することができる。また、こ
のような仮止め手段により、斜面部分の傾斜が急勾配で
ある場合でも、廃棄物が堆積してくるまでの間、各網状
マット付シートを斜面部分に沿って容易に仮止め固定し
ておくことができる。
Since a plurality of sheets with a net-like mat are temporarily fixed to the water-impervious sheet at the upper ends of the sheets with a net-like mat, the sheets are continuously arranged in a roof tile shape so as to cover the surface of the water-impervious sheet. Even if the dumped waste sinks due to compaction, etc., the reticulated load of the sinking waste easily releases the fixing of the sheet with the reticulated mat, and the sheet with the reticulated mat does not pull in the impermeable sheet. By sliding down smoothly along the surface (the reason why the water-impervious sheet is not drawn in is that the mesh mat and the waste have a large frictional force due to the unevenness of the mesh mat, and the water-impermeable sheet and the sheet with the mesh mat The reason is that the frictional force is small because the sheets are in contact with each other.) Therefore, it is possible to prevent the waterproof sheet from being slackened or damaged by an excessive tensile load. In addition, even if the fixed state is released and only the sheet with the net-like mat on the downstream side slides downward by sufficiently leaving the overlap portion of the connecting portion, the predetermined overlap portion is secured and the water-impervious sheet. It is possible to easily hold the roof covered with roof tiles. In addition, even if the slope of the slope is steep, each sheet with a net-like mat can be temporarily fixed along the slope by such temporary fixing means until waste is accumulated. Can be kept.

【0014】さらに、網状マット付シートは、屋根瓦状
に連続配設されているので、廃棄物等を通過してこの網
状マット付シートに至った浸透水や雨水は、空中を自然
落下して家屋の屋根瓦上に降り注がれた雨水がその傾斜
面に沿って流下して樋に至り排水される場合と略同様
に、各網状マット付シートの背面側に回り込むことな
く、重力の作用によって、遮水シートに沿って速やかに
流下して行き、例えば処分場の底面部に布設された排水
管等を介して排出処理されることになる。すなわち、こ
の発明の遮水シートの保護構造は、屋根瓦状に配設した
網状マット付シートの遮水機能によって、遮水シートと
ともに2重の遮水効果を果たすことになる。
Further, since the net-like matted sheet is continuously arranged in the shape of a roof tile, the permeated water and rainwater which have passed through the wastes and reach the netted matted sheet are naturally dropped in the air. Just as when rainwater that has fallen on the roof tiles of a house flows down along its slope and reaches a gutter and is drained, the action of gravity does not go around to the back side of each sheet with a mesh mat. As a result, the water immediately flows down along the impermeable sheet and is discharged through a drainage pipe or the like laid on the bottom surface of the disposal site. That is, the water-shielding sheet protection structure of the present invention achieves a double water-shielding effect together with the water-shielding sheet due to the water-shielding function of the sheet with a mesh mat arranged in a roof tile shape.

【0015】さらにまた、多数の連続線条が不規則な多
数のループをなして絡み合うヘチマ構造としての網状マ
ットにより、廃棄物の底面部分には、遮水シートに沿っ
て相当の厚さの空隙部分が形成保持されることになるの
で、この空隙部分が地下水の排水層や、ガス抜き層ある
いは空気の供給層として機能することにより、廃棄物の
安定化を図ることもできる。
Furthermore, due to the mesh mat as a loofah structure in which a large number of continuous filaments are intertwined in the form of a large number of irregular loops, a gap of a considerable thickness is formed along the water-blocking sheet at the bottom of the waste. Since the portion is formed and held, the void portion can function as a groundwater drainage layer, a gas vent layer, or an air supply layer to stabilize waste.

【0016】そして、この発明の遮水シートの保護構造
は、網状マット付シートに、これの表面を覆う防砂用シ
ートを取り付けれておけば、網状マットが目詰りするの
を防止して空隙を長期間保持することにより、上記遮水
機能や、廃棄物を安定化する機能を長期間発揮させるこ
とができる。
The protective structure for the water-blocking sheet according to the present invention can prevent the mesh mat from clogging and lengthen the gap by attaching a sandproof sheet covering the surface of the mesh mat sheet. By holding for a period of time, it is possible to exert the above-mentioned water-blocking function and the function of stabilizing waste for a long time.

【0017】[0017]

【発明の実施の形態】次に、この発明の好ましい実施の
形態すなわち一実施例について、添付図面を参照しつつ
詳細に説明する。図1は、この発明の遮水シートの保護
構造を採用した埋立型の廃棄物処分場10を示す破断略
示断面図である。すなわち、この廃棄物処分場10は、
例えば山間部等における広大な敷地を凹状に掘削形成し
てなるもので、その凹部底面には、遮水シート11を敷
設して、廃棄物処分場10に投棄した廃棄物30から浸
出する汚水等が処分場から漏出して周囲の地盤に拡散し
ないようにするための遮水工が施されている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of the present invention, that is, an embodiment will be described in detail with reference to the accompanying drawings. FIG. 1 is a schematic cross-sectional view showing a landfill type waste disposal site 10 which employs the water-shielding sheet protection structure of the present invention. That is, this waste disposal site 10
For example, it is formed by excavating a vast site in a mountainous area in a concave shape, and a water blocking sheet 11 is laid on the bottom surface of the concave portion, and sewage or the like leached from the waste 30 dumped at the waste disposal site 10 Water is shielded to prevent water from leaking from the disposal site and spreading to the surrounding ground.

【0018】そして、この実施例の遮水シートの保護構
造12は、廃棄物処分場10の周辺部分に位置する、凹
状の処分場10を周囲の地盤にすり付けるための、斜面
部分としての法面13を覆うべく敷設された遮水シート
11を保護するために設けられるもので、複数の網状マ
ット付シート14を、これの網状樹脂マット19を上面
側に位置させた状態で、かつ法面13におけるこれらの
網状マット付シート14の傾斜方向の各接続部分15に
おいて、傾斜方向上流側の網状マット付シート14の下
端部分16を、傾斜方向下流側の網状マット付シート1
4の上端部分17の上面に重ねて配置し、また、各シー
ト14の上端部分17を遮水シート11に仮止めしつ
つ、遮水シート11の表面を覆って屋根瓦状に連続配設
することにより構成される。
The water shield sheet protective structure 12 of this embodiment is located at the peripheral portion of the waste disposal site 10 and is used as a sloped surface for scraping the concave disposal site 10 to the surrounding ground. It is provided to protect the water-blocking sheet 11 laid so as to cover the surface 13, and a plurality of net-like matted sheets 14 are provided with the net-like resin mat 19 of these sheets 14 on the upper surface side and the slope surface. In each connecting portion 15 in the slanting direction of these reticulated matted sheets 14 in FIG. 13, the lower end portion 16 of the reticulated matted sheet 14 on the slanting direction upstream side is connected to the reticulated matted sheet 1 on the slanting downstream side.
4 is arranged on the upper surface of the upper end portion 17 of each of the sheets 4, and while the upper end portion 17 of each sheet 14 is temporarily fixed to the water-impervious sheet 11, the surface of the water-impervious sheet 11 is covered and continuously arranged in a roof tile shape. It is composed of

【0019】ここで、廃棄物処分場10の法面13を覆
って敷設される遮水シート11は、軟質の合成樹脂系あ
るいはゴム系のシート部材で、例えば幅2〜8m程度の
運搬や施工に適した大きさのものを、砂質土やモルタ
ル、織布等の下地材18により下地処理された法面13
上に敷設した後、熱溶着などによって縦横に接合一体化
されることにより法面13の全体を水密に覆うものであ
る。なお、かかる遮水シート11や下地材18は、処分
場10の底面部分まで延長敷設されて、廃棄物処分場1
0の底面全域を覆うようにして施工されるものである。
Here, the water-blocking sheet 11 laid over the slope 13 of the waste disposal site 10 is a soft synthetic resin or rubber sheet member, and is transported or constructed with a width of, for example, about 2 to 8 m. Slope 13 of which the size is suitable for sandblasted with a ground material 18 such as sandy soil, mortar or woven cloth
After being laid on the upper surface, the entire slope 13 is covered in a watertight manner by being joined and integrated vertically and horizontally by heat welding or the like. The impermeable sheet 11 and the base material 18 are laid down to the bottom of the disposal site 10 so that the waste disposal site 1
It is constructed so as to cover the entire bottom surface of 0.

【0020】一方、かかる法面13に敷設した遮水シー
ト11を保護するための、この実施例の保護構造12を
構成する網状マット付シート14は、図2(a)及び
(b)に拡大して示すように、長さ及び幅が2〜10m
×1〜2m程度の大きさの、厚さ1mm以上の合成樹脂
からなるシート片20の表面に、同様の大きさの網状樹
脂マット19を、例えば溶着等により固着して、予め工
場製作等により、入手が容易な部材として大量に製造す
ることができるものである。また、網状樹脂マット19
は、耐食性に優れた多数の連続樹脂線条が不規則な多数
のループをなして絡み合う、厚さ1〜5cm程度のマッ
ト状のヘチマ構造からなるもので、この樹脂線状が溶融
状態から固化して強度を発揮し、所望の圧縮強度及び空
隙率を有することになる。さらに、この実施例では、網
状樹脂マット19の表面には、これを覆うようにして、
粒径の大きな砂粒分や個形分が網状樹脂マット19へ侵
入しようとするのを防止して、これの空隙が目詰りする
のを防止するための防砂用シート21が取り付られてい
る。
On the other hand, the mesh matted sheet 14 constituting the protective structure 12 of this embodiment for protecting the water blocking sheet 11 laid on the slope 13 is enlarged in FIGS. 2 (a) and 2 (b). As shown, the length and width are 2-10m
A net-like resin mat 19 of the same size is fixed to the surface of a sheet piece 20 made of synthetic resin having a thickness of 1 mm or more and having a size of about 1 to 2 m by, for example, welding or the like, and is manufactured in advance by a factory or the like. The material can be mass-produced as an easily available member. In addition, the reticulated resin mat 19
Is a matte loofah structure with a thickness of about 1 to 5 cm, in which a large number of continuous resin filaments with excellent corrosion resistance are entangled in irregular loops. The resin filaments are solidified from a molten state. To exert strength and have desired compressive strength and porosity. Further, in this embodiment, the surface of the reticulated resin mat 19 is covered with the mat.
A sand-preventing sheet 21 is attached for preventing sand grains and individual components having a large particle diameter from invading the reticulated resin mat 19 and preventing clogging of voids thereof.

【0021】そして、このようにして製作された網状マ
ット付シート14は、遮水シート11の敷設現場まで運
搬されたに後、処分場に投棄される廃棄物30が順次堆
積してゆくのに伴って、斜面部分の下方から上方へ向か
って、例えば覆土31が完了したところから、順次屋根
瓦状に設置されて行くことになる。すなわち、上述のよ
うに、網状樹脂マット19を上面側に位置させた状態
で、傾斜方向上流側の網状マット付シート14の下端部
分16を、傾斜方向下流側の網状マット付シート14の
上端部分17の上面に重ねて配置し、かつ、各シート1
4の上端部分17を遮水シート11に仮止めしつつ、遮
水シート11の表面を覆って屋根瓦状に連続配設してゆ
く。
The net-attached matted sheet 14 manufactured in this manner is transported to the site where the water-blocking sheet 11 is laid, and thereafter, the wastes 30 to be dumped at the disposal site are successively deposited. Along with this, the roof tiles are sequentially installed from the lower side to the upper side of the slope portion, for example, when the soil covering 31 is completed. That is, as described above, with the reticulated resin mat 19 positioned on the upper surface side, the lower end portion 16 of the reticulated matted sheet 14 on the upstream side in the inclination direction is replaced by the upper end portion of the reticulated matted sheet 14 on the downstream side in the inclination direction. 17 is placed on the upper surface of 17 and each sheet 1
While temporarily fixing the upper end portion 17 of the water shield sheet 11 to the water shield sheet 11, the surface of the water shield sheet 11 is covered and continuously arranged in the shape of a roof tile.

【0022】ここで、網状マット付シート14の上端部
分17の仮止めは、例えば両面接着テープ22を用いて
当該上端部分17を遮水シート11に貼着することによ
り、遮水シート11を覆いつつ容易に施工することがで
きる。また、この仮止め固定状態によって、堆積した廃
棄物30の圧密沈下により網状マット付シート14に下
方へ向かう所定の大きさの引張り荷重等が負荷された場
合に、その固定状態が容易に解除されるようになってい
る。
Here, for temporarily fixing the upper end portion 17 of the sheet 14 with a net-like mat, the upper end portion 17 is adhered to the waterproof sheet 11 by using, for example, a double-sided adhesive tape 22 to cover the waterproof sheet 11. However, it can be easily constructed. Further, due to this temporarily fixed state, when a predetermined downward pulling load or the like is applied to the reticulated matted sheet 14 due to the consolidation settlement of the accumulated waste 30, the fixed state is easily released. It has become so.

【0023】なお、これらの網状マット付シート14の
傾斜方向と交差する方向、すなわち水平方向ないしは横
方向への接続部分は、隣接する網状マット付シート14
の側端部分を単に重ね合わせて構成しても良く、また溶
着等により接続一体化して構成することもできる。ま
た、保護構造12を設けた法面13より下方の、廃棄物
処分場10の底面部分には、保護構造12の下端部から
延長して、遮水シート11を覆って不織布からなる保護
材23が設けられている(図1参照)。
The connecting portion in the direction intersecting with the slanting direction of the net-like matted sheet 14, that is, in the horizontal direction or the horizontal direction, is adjacent to the net-like matted sheet 14.
The side end portions may be simply overlapped, or they may be connected and integrated by welding or the like. Further, below the slope 13 where the protective structure 12 is provided, on the bottom surface portion of the waste disposal site 10, the protective material 23 that extends from the lower end of the protective structure 12 and covers the water blocking sheet 11 and is made of a non-woven fabric Are provided (see FIG. 1).

【0024】そして、このようにして設置されたこの実
施例の遮水シート11の保護構造12によれば、相当の
厚さを有し、入手が容易な網状マット付シート14が遮
水シート11と廃棄物30との間に介装することによ
り、遮水シート11の破損を防止するとともに、廃棄物
30の底面部分には、地下水や浸透水の排水層や、ガス
抜き層あるいは空気の供給層としての空隙部分が保持さ
れて、廃棄物の安定化が図られることになる。
According to the protective structure 12 of the water impervious sheet 11 of this embodiment thus installed, the net matted sheet 14 which has a considerable thickness and is easily available is the water impervious sheet 11. By interposing between the waste material 30 and the waste 30, the water shield sheet 11 is prevented from being damaged, and the bottom portion of the waste 30 is provided with a drainage layer of groundwater or permeated water, a degassing layer or air. The void portion as a layer is retained and the waste is stabilized.

【0025】また、複数の網状マット付シート14が、
法面13の傾斜方向に沿って屋根瓦状に連続配設されて
いることにより、遮水シート11とともに2重の遮水効
果を得ることができるとともに、各網状マット付シート
14が遮水シート11に仮止めされていることにより、
投棄した廃棄物30が圧密沈下等を生じる場合でも、遮
水シート11に過度の引張り荷重によるたるみや損傷が
生じるのを回避することができる。
Further, the plurality of net matted sheets 14 are
Since the roof tiles are continuously arranged along the slope direction of the slope 13, a double water-shielding effect can be obtained together with the water-shielding sheet 11, and each mesh-attached sheet 14 is a water-shielding sheet. By being temporarily fixed to 11,
Even when the dumped waste 30 causes consolidation settlement, it is possible to prevent the waterproof sheet 11 from being slackened or damaged due to an excessive tensile load.

【0026】なお、この発明は、上記実施例の実施の態
様のものに限定されるものではなく、各請求項に記載さ
れた構成の範囲内において、種々変更して採用すること
ができる。例えば、必ずしも網状マット付シート14の
表面に防砂用シート21を設ける必要はなく、また、各
網状マット付シート14は、廃棄物30の投棄や覆土3
1が完了したところから順次設置してゆく場合に限定さ
れず、予め法面13の全域に取り付けておくことによ
り、この網状マット付シート14によって紫外線や風雨
等から遮水シート11を防護するようにすることもでき
る。さらに、この発明は、凹状の処分場10を周囲の地
盤にすり付けるための法面13に限定されることなく、
その他の斜面部分に対しても採用することができる。
The present invention is not limited to the embodiment of the above-mentioned embodiment, but can be variously modified and adopted within the scope of the constitution described in each claim. For example, it is not always necessary to provide the sandproof sheet 21 on the surface of the net-like matted sheet 14, and each net-like matted sheet 14 is disposed of by discarding the waste 30 or covering the soil 3.
It is not limited to the case where the installation is performed sequentially from the point where 1 is completed, but by installing the entire surface of the slope 13 in advance, it is possible to protect the water shielding sheet 11 from ultraviolet rays, wind and rain, etc. by the sheet 14 with the mesh mat. You can also Further, the present invention is not limited to the slope 13 for rubbing the concave disposal site 10 on the surrounding ground,
It can also be adopted for other slope portions.

【0027】[0027]

【発明の効果】以上詳細に説明したように、この発明の
廃棄物処分場における遮水シートの敷設構造によれば、
入手が容易な網状マット付シートを、斜面部分におい
て、遮水シートの表面に仮止め固定しながら屋根瓦状に
連続配設することにより構成されるので、斜面部分に敷
設した遮水シートに過大な引張り荷重を生じさせること
なく、これのたるみや損傷を容易に回避することができ
るとともに、遮水機能を高め、また投棄された廃棄物の
安定化をも容易に図ることができる。
As described in detail above, according to the laying structure of the water blocking sheet in the waste disposal site of the present invention,
It is constructed by arranging easily available netted matted sheets in a roof tile shape while temporarily fixing and fixing them to the surface of the water-impervious sheet at the slope, so it is too large for the water-impermeable sheet laid on the slope. It is possible to easily avoid the slack and damage of the waste material without generating a large tensile load, improve the water blocking function, and easily stabilize the discarded waste.

【図面の簡単な説明】[Brief description of the drawings]

【図1】この発明の一実施例にかかる遮水シートの保護
構造を採用した埋立型の廃棄物処分場の一例を示す破断
略示断面図である。
FIG. 1 is a schematic cross-sectional cutaway view showing an example of a landfill type waste disposal site that employs a water-shielding sheet protection structure according to an embodiment of the present invention.

【図2】(a)は、図1の埋立型の廃棄物処分場の斜面
部分の構成を拡大して示す略示断面図、(b)は、網状
マット付シートの具体的構成を例示する略示断面図であ
る。
2A is a schematic cross-sectional view showing an enlarged configuration of a slope portion of the landfill type waste disposal site of FIG. 1, and FIG. 2B exemplifies a specific configuration of a meshed sheet. It is a schematic sectional drawing.

【符号の説明】[Explanation of symbols]

10 廃棄物処分場 11 遮水シート 12 遮水シートの保護構造 13 法面(斜面部分) 14 網状マット付シート 15 接続部分 16 下端部分 17 上端部分 18 下地材 19 網状樹脂マット(網状マット) 20 シート片 21 防砂用シート 22 両面接着テープ(仮止め手段) 23 保護材 30 廃棄物 31 覆土 10 Waste Disposal Site 11 Water-Impermeable Sheet 12 Protective Structure of Water-Impermeable Sheet 13 Slope (Slope) 14 Sheet with Reticulated Mat 15 Connection Part 16 Lower End 17 Upper End 18 Base Material 19 Reticulated Resin Mat (Reticulated Mat) 20 Sheet Piece 21 Sand-proof sheet 22 Double-sided adhesive tape (temporary fixing means) 23 Protective material 30 Waste 31 Soil cover

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 廃棄物処分場の斜面部分に敷設される遮
水シートを保護するための保護構造であって、多数の線
条が不規則な多数のループをなして絡み合うヘチマ構造
を網状マットとして表面に固着した複数の網状マット付
シートを、前記網状マットが上面側に位置するようにし
た状態で、かつ前記斜面部分における傾斜方向の各接続
部分において上流側に位置する網状マット付シートの下
端部分を下流側に位置する網状マット付シートの上端部
分の上面に重ねて配置するとともに、この網状マット付
シートの上端部分を敷設した遮水シートに各々仮止めし
つつ、前記遮水シートの表面を覆って屋根瓦状に連続配
設することを特徴とする廃棄物処分場における遮水シー
トの保護構造。
1. A reticulated mat having a loofah structure for protecting a water-blocking sheet laid on a slope of a waste disposal site, in which a large number of filaments are intertwined in a large number of irregular loops. As a plurality of reticulated mat-attached sheets adhered to the surface as the reticulated mat with the reticulated mat positioned on the upper surface side, and the reticulated mat-attached sheet positioned on the upstream side at each connection portion in the inclined direction of the slope portion. While arranging the lower end portion on the upper surface of the upper end portion of the reticulated mat-equipped sheet located on the downstream side, and temporarily fixing the upper end portion of the reticulated mat-equipped sheet to the laid water-impervious sheet, A protective structure for water-impervious sheets at a waste disposal site, which is characterized by covering the surface and continuously arranging it in the shape of a roof tile.
【請求項2】 前記各網状マット付シートには、これの
表面を覆う防砂用シートが取り付けられていることを特
徴とする請求項1に記載の遮水シートの保護構造。
2. The water-impervious sheet protection structure according to claim 1, wherein each of the reticulated matted sheets is provided with a sandproof sheet covering the surface thereof.
JP34367195A 1995-12-28 1995-12-28 Protective structure of water barrier sheet in waste disposal field Pending JPH09174012A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP34367195A JPH09174012A (en) 1995-12-28 1995-12-28 Protective structure of water barrier sheet in waste disposal field

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP34367195A JPH09174012A (en) 1995-12-28 1995-12-28 Protective structure of water barrier sheet in waste disposal field

Publications (1)

Publication Number Publication Date
JPH09174012A true JPH09174012A (en) 1997-07-08

Family

ID=18363346

Family Applications (1)

Application Number Title Priority Date Filing Date
JP34367195A Pending JPH09174012A (en) 1995-12-28 1995-12-28 Protective structure of water barrier sheet in waste disposal field

Country Status (1)

Country Link
JP (1) JPH09174012A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000202390A (en) * 1999-01-12 2000-07-25 Takiron Co Ltd Water-barrier structure of waste disposal site
JP2008188500A (en) * 2007-02-01 2008-08-21 Ohbayashi Corp Impermeable structure and method for construction of impermeable structure
JP2009281022A (en) * 2008-05-21 2009-12-03 Taiyo Kogyo Corp Joining method of extended end of impervious sheet
JP2013128900A (en) * 2011-12-22 2013-07-04 Masataka Nagano Device and method for handling unprocessed substances

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000202390A (en) * 1999-01-12 2000-07-25 Takiron Co Ltd Water-barrier structure of waste disposal site
JP2008188500A (en) * 2007-02-01 2008-08-21 Ohbayashi Corp Impermeable structure and method for construction of impermeable structure
JP2009281022A (en) * 2008-05-21 2009-12-03 Taiyo Kogyo Corp Joining method of extended end of impervious sheet
JP2013128900A (en) * 2011-12-22 2013-07-04 Masataka Nagano Device and method for handling unprocessed substances

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