JP2012076043A - Method of laying covering sheet - Google Patents

Method of laying covering sheet Download PDF

Info

Publication number
JP2012076043A
JP2012076043A JP2010224894A JP2010224894A JP2012076043A JP 2012076043 A JP2012076043 A JP 2012076043A JP 2010224894 A JP2010224894 A JP 2010224894A JP 2010224894 A JP2010224894 A JP 2010224894A JP 2012076043 A JP2012076043 A JP 2012076043A
Authority
JP
Japan
Prior art keywords
sheet
nonwoven fabric
water shielding
water
sheet material
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
Application number
JP2010224894A
Other languages
Japanese (ja)
Other versions
JP5636246B2 (en
Inventor
Takashi Harada
尚 原田
Kenji Toyoda
健治 豊田
Naoto Watabe
直人 渡部
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.)
CI Kasei Co Ltd
Original Assignee
CI Kasei 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 CI Kasei Co Ltd filed Critical CI Kasei Co Ltd
Priority to JP2010224894A priority Critical patent/JP5636246B2/en
Publication of JP2012076043A publication Critical patent/JP2012076043A/en
Application granted granted Critical
Publication of JP5636246B2 publication Critical patent/JP5636246B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/30—Landfill technologies aiming to mitigate methane emissions

Landscapes

  • Processing Of Solid Wastes (AREA)
  • Laminated Bodies (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a method of laying a covering sheet in which positioning can be easily made when laying and spreading a nonwoven fabric and an impervious sheet in piles, moreover, after the positioning, the nonwoven fabric and the impervious sheet are each other made into a contact opposite state by high friction.SOLUTION: The method of laying a covering sheet is characterized as follows. A low friction sheet material 15 is spread to cover the upper surface of a nonwoven fabric 9 after spreading the nonwoven fabric 9, an impervious sheet 7 is spread on the low friction sheet material 15 which has been spread, the end edge of the impervious sheet 7 is made to meet the end edge of the other adjoining impervious sheet 7, performing the position adjusting, and the end edges mutually adjoining each other are joined, then, the low friction sheet material 15 is removed from between the nonwoven fabric 9 and the impervious sheets 7, and the nonwoven fabric 9 and the impervious sheet 7 are made as laminating arrangement. The impervious sheet 7 has an uneven surface 13 on the surface which counters the nonwoven fabric 9, which becomes high friction contact to the nonwoven fabric 9, and thereby the shift is inhibited.

Description

本発明は、産業廃棄物処分場などの低段地よりなる貯留部の底面や周面、調整池や人工池等の底部などに敷設され、これら底面や周面を被覆する被覆シートの敷設方法に関するものである。   The present invention relates to a method for laying a covering sheet that is laid on the bottom surface or peripheral surface of a storage section composed of a low-level land such as an industrial waste disposal site, the bottom of a regulating pond, an artificial pond, or the like, and covers the bottom surface or the peripheral surface. It is about.

廃棄物最終処分場や調整池、人工池等には、地面に対して、廃棄物から浸出する汚水等が土壌汚染、地下水汚染、公共水域汚染などが発生することのないように、その底面や周面に遮水構造を施す必要が有る。この遮水構造としては、塩化ビニル樹脂製シート材やオレフィン系樹脂シート材などの遮水性のある遮水シート材と、不織布などからなるシート状緩衝材を展張し、層状に重合させて地面を被覆し構成させるものである。   In the final disposal site for waste, adjustment ponds, artificial ponds, etc., the bottom surface and groundwater so that sewage leached from the waste will not cause soil contamination, groundwater contamination, or public water pollution. It is necessary to provide a water shielding structure on the peripheral surface. As this water-impervious structure, a water-impervious sheet material such as a vinyl chloride resin sheet material or an olefin resin sheet material, and a sheet-like cushioning material made of nonwoven fabric, etc. are spread and polymerized in layers to form a ground surface. It is covered and configured.

このような遮水構造は、一般的に、下地地面上に、下層保護マット（シート状緩衝材）、下層遮水シート材、中間保護マット（シート状緩衝材）、上層遮水シート、上層保護マット（シート状緩衝材）の５層構造とされ、上層保護マットの上に砂を数十ｃｍの厚さで覆う構成とされ、収容する廃棄物などによる破損の防止が施されており、各層の遮水シートは、帯状の原反を展張施工しその展張作業中に隣り合う左右縁部を熱溶着で接合している。展張作業としては、通常の遮水シートは、平滑で摩擦の少ない素材よりなることから、先に展張敷設されている不織布上で遮水シートを滑らせることが可能であり、敷設が容易であり、また互いに接合する際の位置の微調整なども遮水シートを動かすことが容易であることから可能となっている。   Such a water-blocking structure generally has a lower layer protection mat (sheet cushioning material), a lower layer waterproof sheet material, an intermediate protection mat (sheet cushioning material), an upper layer waterproof sheet, and an upper layer protection on the ground surface. It has a five-layer structure of mat (sheet cushioning material), and is configured to cover the sand with a thickness of several tens of centimeters on the upper protective mat, and is protected from damage caused by the waste contained therein. The water shielding sheet is constructed by extending a belt-shaped raw fabric and joining the adjacent right and left edge portions by thermal welding during the extending operation. As a stretch work, a normal water-impervious sheet is made of a material that is smooth and has little friction, so it is possible to slide the water-impervious sheet on the nonwoven fabric that has been laid out earlier, and it is easy to lay. In addition, fine adjustment of the position at the time of joining to each other is possible because it is easy to move the water shielding sheet.

しかしながら、上記のような平滑で摩擦の少ない素材よりなる遮水シートでは、不織布上での取り扱いが容易ではあるが、各シート及ぶ不織布の敷設完了後、実際に運用を開始すると、廃棄物や水などを収容した状態で、遮水シートと不織布との間で滑りが生じ、シートの滑落が発生し、層状に構成される各シートの損傷などが起きる不具合がある。   However, the water-proof sheet made of a smooth and low-friction material as described above is easy to handle on the nonwoven fabric. However, when the operation is actually started after laying the nonwoven fabric covering each sheet, In such a state, slipping occurs between the water-impervious sheet and the non-woven fabric, causing the sheet to slip off, and causing damage to each sheet configured in layers.

このような滑落などの不具合を低減するために、シート表面に凹凸を設けて摩擦係数を高めたものが下記特許文献１にある。この土木用遮水シートによれば、表面に形成した凹凸面が、積層される不織布に対して高摩擦で接触対向状態となり、互いの滑りが無く、積層状態を維持することとなる。   In order to reduce such problems such as slipping, Japanese Patent Application Laid-Open Publication No. 2004-151867 discloses an article having unevenness on the sheet surface to increase the friction coefficient. According to this civil engineering water-impervious sheet, the uneven surface formed on the surface is in a contact-opposed state with high friction with respect to the laminated nonwoven fabric, there is no mutual slip, and the laminated state is maintained.

特開２００２−３１６１１７号公報JP 2002-316117 A

しかしながら、上述した従来の凹凸面を形成した高摩擦遮水シートでは、その敷設施工時に、遮水シート上で配置位置をズレることなく整然と並べることが可能であるが、施工現場によっては、地山側の凹凸などもあり、遮水シート同士を接合する際に互いの位置を微調整し、すなわち遮水シートの位置を不織布上で滑らせることで、好ましい位置へと移動させる必要があるが、シート表面の凹凸が不織布に噛み込み移動が不可能となることがある。また、遮水シート上に不織布を展設する際にも、位置ずれを修復しようにも、遮水シート表面の凹凸が不織布に絡まって滑らず、ズレ修復が不可能となって、取り扱いが容易ではなくなる不具合がある。   However, in the conventional high-friction water-impervious sheet formed with the uneven surface described above, it is possible to arrange the arrangement order on the water-impervious sheet without shifting its position at the time of laying construction. There are also irregularities, etc., it is necessary to finely adjust each other's position when joining the water shielding sheets, that is, by sliding the position of the water shielding sheet on the nonwoven fabric, it is necessary to move it to a preferred position, The unevenness on the surface may bite into the nonwoven fabric, making it impossible to move. In addition, when the nonwoven fabric is spread on the waterproof sheet, the unevenness of the surface of the waterproof sheet does not slip on the nonwoven fabric, and the misalignment cannot be repaired, making it easy to handle. There is a bug that is not.

そこで本発明は、上記問題点を解消するために、保護マットとなる不織布の上に遮水シートを敷設展張する際、及び遮水シートの上に不織布を敷設展張する際に、不織布と遮水シートとの間に大きな摩擦を発生させず、互いを滑らせて容易に位置修正や位置決めができ、その展張作業及び接合作業後には、不織布と遮水シートとの互いを高摩擦で接触対向状態として、ずれの生じない積層状態を維持することができる被覆シートの敷設方法を提供することを目的としている。   Therefore, in order to solve the above problems, the present invention provides a nonwoven fabric and a water shielding layer when a water shielding sheet is laid and spread on a nonwoven fabric serving as a protective mat, and when a nonwoven fabric is laid and spread on a water shielding sheet. Positioning and positioning can be easily performed by sliding each other without generating large friction with the sheet. After the expansion and joining operations, the non-woven fabric and the water-impervious sheet are in contact with each other with high friction. It is an object of the present invention to provide a covering sheet laying method capable of maintaining a laminated state in which no deviation occurs.

次に、上記の課題を解決するための手段を、実施の形態に対応する図面を参照して説明する。
この発明の請求項１記載の被覆シートの敷設方法は、緩衝層３となる不織布９と、遮水層５となる遮水シート７とをそれぞれ順次展張し積層させるとともに、前記各層３，５の少なくとも遮水シート７の隣り合う端縁を互いに接着して、保護対象面１９を覆う被覆シート１の敷設方法であって、
前記不織布９の展張後、又は前記遮水シート７の展張後に、低摩擦性シート材１５を展張して前記不織布９又は遮水シート７の上面を覆い、
展張された前記低摩擦性シート材１５の上に、前記不織布９が下層となる場合には遮水シート７を、前記遮水シート７が下層となる場合には不織布９を展張し、
前記低摩擦性シート材１５の上面に展張される前記不織布９又は遮水シート７の端縁を、隣接する他の不織布９又は遮水シート７の端縁に沿わせて位置調整を行い、
その後、前記低摩擦性シート材１５を前記不織布９と遮水シート７との間から引き抜き、
該不織布９と遮水シート７とを積層配置とすることを特徴とする。 Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The covering sheet laying method according to claim 1 of the present invention is that the nonwoven fabric 9 to be the buffer layer 3 and the water shielding sheet 7 to be the water shielding layer 5 are sequentially spread and laminated, respectively, and the layers 3 and 5 are Adhering at least the adjacent edges of the water shielding sheet 7 to each other and laying the covering sheet 1 covering the protection target surface 19,
After the nonwoven fabric 9 is stretched or after the waterproof sheet 7 is stretched, the low friction sheet material 15 is stretched to cover the upper surface of the nonwoven fabric 9 or the waterproof sheet 7;
On the low-friction sheet material 15 stretched, when the nonwoven fabric 9 is a lower layer, the waterproof sheet 7 is stretched, and when the waterproof sheet 7 is a lower layer, the nonwoven fabric 9 is stretched,
The edge of the nonwoven fabric 9 or the water-impervious sheet 7 stretched on the upper surface of the low-friction sheet material 15 is adjusted along the edge of another adjacent nonwoven fabric 9 or the water-impervious sheet 7,
Thereafter, the low friction sheet material 15 is pulled out from between the nonwoven fabric 9 and the water shielding sheet 7,
The nonwoven fabric 9 and the water shielding sheet 7 are laminated.

この被覆シートの敷設方法によれば、不織布９の展張後の遮水シート７の展張以前、或いは遮水シート７の展張後の不織布９の展張以前に、低摩擦性シート材１５を挟み込むように展張配置することで、それぞれの後工程側において、不織布９や遮水シート７の展張位置の調整を行うことが可能となるとともに、その展張作業時においても下側に位置する不織布９或いは遮水シート７との間に大きな摩擦を発生させることがなく、低摩擦性シート材１５上の遮水シート７或いは不織布９を滑らせることが可能となり、展張作業に煩雑さがなくなり、そして展張後には低摩擦性シート材１５を引き抜くように取り除くことで、不織布９と遮水シート７との互いをずれの生じにくい積層状態とすることが可能となる。   According to this covering sheet laying method, the low-friction sheet material 15 is sandwiched before the non-woven fabric 9 is stretched before the waterproof sheet 7 is stretched or before the non-woven fabric 9 is stretched after the waterproof sheet 7 is stretched. By arranging the stretch, it is possible to adjust the stretch position of the nonwoven fabric 9 and the water shielding sheet 7 on each subsequent process side, and the nonwoven fabric 9 or the water shield located on the lower side even during the stretching operation. It is possible to slide the water shielding sheet 7 or the non-woven fabric 9 on the low friction sheet material 15 without generating a large friction with the sheet 7, and there is no trouble in the expansion work. By removing the low-friction sheet material 15 so as to be pulled out, it is possible to make the non-woven fabric 9 and the water-impervious sheet 7 into a laminated state in which the mutual displacement hardly occurs.

請求項２記載の被覆シートの敷設方法は、緩衝層３となる不織布９と、遮水層５となる遮水シート７とをそれぞれ順次展張し積層させるとともに、前記各層３，５の少なくとも遮水シート７の隣り合う端縁を互いに接着して、保護対象面１９を覆う被覆シート１の敷設方法であって、
前記不織布９の展張後、又は前記遮水シート７の展張後に、低摩擦性シート材１５を展張して前記不織布９又は遮水シート７の上面を覆い、
展張された前記低摩擦性シート材１５の上に、前記不織布９が下層となる場合には遮水シート７を、前記遮水シート７が下層となる場合には不織布９を展張し、
前記低摩擦性シート材１５の上面に展張される前記不織布９又は遮水シート７の端縁を、隣接する他の不織布９又は遮水シート７の端縁に沿わせて位置調整を行い、
該位置調整後に、前記低摩擦シート材１５の上に前記遮水シート７が展張状態である場合では、該遮水シート７の互いに隣り合う端縁同士を接合し、
その後、前記低摩擦性シート材１５を前記不織布９と遮水シート７との間から引き抜き、
該不織布９と遮水シート７とを積層配置とすることを特徴とする。 The covering sheet laying method according to claim 2, in which the nonwoven fabric 9 to be the buffer layer 3 and the water shielding sheet 7 to be the water shielding layer 5 are sequentially spread and laminated, and at least the water shielding of each of the layers 3 and 5. Adhering adjacent edges of the sheet 7 to each other and laying the covering sheet 1 covering the surface to be protected 19,
After the nonwoven fabric 9 is stretched or after the waterproof sheet 7 is stretched, the low friction sheet material 15 is stretched to cover the upper surface of the nonwoven fabric 9 or the waterproof sheet 7;
On the low-friction sheet material 15 stretched, when the nonwoven fabric 9 is a lower layer, the waterproof sheet 7 is stretched, and when the waterproof sheet 7 is a lower layer, the nonwoven fabric 9 is stretched,
The edge of the nonwoven fabric 9 or the water-impervious sheet 7 stretched on the upper surface of the low-friction sheet material 15 is adjusted along the edge of another adjacent nonwoven fabric 9 or the water-impervious sheet 7,
After the position adjustment, when the water shielding sheet 7 is in a stretched state on the low friction sheet material 15, the adjacent edges of the water shielding sheet 7 are joined together,
Thereafter, the low friction sheet material 15 is pulled out from between the nonwoven fabric 9 and the water shielding sheet 7,
The nonwoven fabric 9 and the water shielding sheet 7 are laminated.

この被覆シートの敷設方法によれば、不織布９の展張後の遮水シート７の展張以前、或いは遮水シート７の展張後の不織布９の展張以前に、低摩擦性シート材１５を挟み込むように展張配置することで、それぞれの後工程側において、不織布９や遮水シート７の展張位置の調整を行うことが可能となるとともに、その展張作業時においても下側に位置する不織布９或いは遮水シート７との間に大きな摩擦を発生させることがなく、低摩擦性シート材１５上の遮水シート７或いは不織布９を滑らせることが可能となり、展張作業に煩雑さがなくなり、そして展張し互いを接合した後には低摩擦性シート材１５を引き抜くように取り除くことで、不織布９と遮水シート７との互いをずれの生じにくい積層状態とすることが可能となる。   According to this covering sheet laying method, the low-friction sheet material 15 is sandwiched before the non-woven fabric 9 is stretched before the waterproof sheet 7 is stretched or before the non-woven fabric 9 is stretched after the waterproof sheet 7 is stretched. By arranging the stretch, it is possible to adjust the stretch position of the nonwoven fabric 9 and the water shielding sheet 7 on each subsequent process side, and the nonwoven fabric 9 or the water shield located on the lower side even during the stretching operation. It is possible to slide the water-impervious sheet 7 or the nonwoven fabric 9 on the low-friction sheet material 15 without generating a large friction with the sheet 7, so that the stretching work is not complicated, and the sheets are stretched to each other. After bonding, the low-friction sheet material 15 is removed so as to be pulled out, whereby the non-woven fabric 9 and the water-impervious sheet 7 can be brought into a laminated state in which displacement is unlikely to occur.

請求項３記載の被覆シートの敷設方法は、緩衝層３となる不織布９と、遮水層５となる遮水シート７とをそれぞれ順次展張し積層させるとともに、前記各層３，５の少なくとも遮水シート７の隣り合う端縁を互いに接着して、保護対象面１９を覆う被覆シート１の敷設方法であって、
前記不織布９の展張後、又は前記遮水シート７の展張後に、低摩擦性シート材１５を展張して前記不織布９又は遮水シート７の上面を覆い、
展張された前記低摩擦性シート材１５の上に、前記不織布９が下層となる場合には遮水シート７を、前記遮水シート７が下層となる場合には不織布９を展張し、
前記低摩擦性シート材１５の上面に展張される前記不織布９又は遮水シート７の端縁を、隣接する他の不織布９又は遮水シート７の端縁に沿わせて位置調整を行い、
該位置調整後に前記低摩擦シート材１５を前記不織布９と遮水シート７との間から引き抜き、
その後、前記不織布９の上に前記遮水シート７が展張状態である場合では、該遮水シート７の互いに隣り合う端縁同士を接合し、
該不織布９と遮水シート７とを積層配置とすることを特徴とする。 The covering sheet laying method according to claim 3 is a method of spreading and laminating a nonwoven fabric 9 to be a buffer layer 3 and a water shielding sheet 7 to be a water shielding layer 5 sequentially, and at least water shielding of each of the layers 3 and 5. Adhering adjacent edges of the sheet 7 to each other and laying the covering sheet 1 covering the surface to be protected 19,
After the nonwoven fabric 9 is stretched or after the waterproof sheet 7 is stretched, the low friction sheet material 15 is stretched to cover the upper surface of the nonwoven fabric 9 or the waterproof sheet 7;
On the low-friction sheet material 15 stretched, when the nonwoven fabric 9 is a lower layer, the waterproof sheet 7 is stretched, and when the waterproof sheet 7 is a lower layer, the nonwoven fabric 9 is stretched,
The edge of the nonwoven fabric 9 or the water-impervious sheet 7 stretched on the upper surface of the low-friction sheet material 15 is adjusted along the edge of another adjacent nonwoven fabric 9 or the water-impervious sheet 7,
After the position adjustment, the low friction sheet material 15 is pulled out from between the nonwoven fabric 9 and the water shielding sheet 7,
Then, when the water-impervious sheet 7 is in a stretched state on the nonwoven fabric 9, the adjacent edges of the water-impervious sheet 7 are joined together,
The nonwoven fabric 9 and the water shielding sheet 7 are laminated.

この被覆シートの敷設方法によれば、不織布９の展張後の遮水シート７の展張以前、或いは遮水シート７の展張後の不織布９の展張以前に、低摩擦性シート材１５を挟み込むように展張配置することで、それぞれの後工程側において、不織布９や遮水シート７の展張位置の調整を行うことが可能となるとともに、その展張作業時においても下側に位置する不織布９或いは遮水シート７との間に大きな摩擦を発生させることがなく、低摩擦性シート材１５上の遮水シート７或いは不織布９を滑らせることが可能となり、展張作業に煩雑さがなくなり、そして展張した後には低摩擦性シート材１５を引き抜くように取り除くことで、不織布９と遮水シート７との互いをずれの生じにくい積層状態とすることが可能となる。そして、遮水シート７は、互いに隣り合う端縁同士の接合が行われるが、位置決めされた状態となることで、その接合時に微調整を行うなどの煩雑さがなくなる、   According to this covering sheet laying method, the low-friction sheet material 15 is sandwiched before the non-woven fabric 9 is stretched before the waterproof sheet 7 is stretched or before the non-woven fabric 9 is stretched after the waterproof sheet 7 is stretched. By arranging the stretch, it is possible to adjust the stretch position of the nonwoven fabric 9 and the water shielding sheet 7 on each subsequent process side, and the nonwoven fabric 9 or the water shield located on the lower side even during the stretching operation. It is possible to slide the water shielding sheet 7 or the non-woven fabric 9 on the low friction sheet material 15 without generating a large friction with the sheet 7, and there is no trouble in the expansion work. By removing the low-friction sheet material 15 so as to be pulled out, it becomes possible to make the non-woven fabric 9 and the water-impervious sheet 7 into a laminated state in which the mutual displacement hardly occurs. And, the water-impervious sheet 7 is joined between the edges adjacent to each other, but by being in a positioned state, there is no trouble such as performing fine adjustment during the joining,

請求項４記載の被覆シートの敷設方法は、請求項１又は２又は３記載の被覆シートの敷設方法において、前記遮水シート７は、前記不織布９に対向する面に、該不織布９に対して高摩擦に接触となる凹凸面１３を有することを特徴とする。   The covering sheet laying method according to claim 4 is the covering sheet laying method according to claim 1, 2, or 3, wherein the water-impervious sheet 7 is formed on the surface facing the non-woven fabric 9 with respect to the non-woven fabric 9. It has the uneven surface 13 which contacts in high friction.

この被覆シートの敷設方法によれば、展張後に低摩擦性シート材１５を取り除くことで、遮水シート７の凹凸面１３が、不織布９に対して高摩擦で接触対向状態となり、ずれの生じない積層状態を維持させることが可能となる。 According to this covering sheet laying method, by removing the low-friction sheet material 15 after spreading, the uneven surface 13 of the water-proof sheet 7 is brought into a contact-opposed state with high friction against the nonwoven fabric 9, and no deviation occurs. The stacked state can be maintained.

請求項５記載の被覆シートの敷設方法は、請求項４記載の被覆シートの敷設方法において、前記凹凸面１３は、樹脂シートの押出成形直後に溶融樹脂をランダムに吹き付けて得ることを特徴とする。 The covering sheet laying method according to claim 5 is the covering sheet laying method according to claim 4, wherein the uneven surface 13 is obtained by randomly spraying a molten resin immediately after extrusion molding of the resin sheet. .

この被覆シートの敷設方法によれば、遮水シート７となる樹脂シートの押出成形の直後に凹凸面１３が形成され、その凹凸面１３は溶融樹脂よりなることから、吹き付け時に樹脂シートへ容易に接着し、この凹凸面１３を備える遮水シート７として展張され敷設された状態で不織布９に対して高摩擦であり、遮水シート７に成型加工などや不織布９に対しての接着構造などを新たに追加することなく、積層するのみで互いのずれが防止される。   According to this covering sheet laying method, the uneven surface 13 is formed immediately after the extrusion of the resin sheet to be the water shielding sheet 7, and the uneven surface 13 is made of a molten resin. It is bonded and has a high friction against the nonwoven fabric 9 in the state of being spread and laid as the water-impervious sheet 7 having the uneven surface 13. The water-impervious sheet 7 has a molding process or an adhesive structure with respect to the nonwoven fabric 9. Misalignment can be prevented by simply stacking without adding new ones.

請求項６記載の被覆シートの敷設方法は、請求項４又は５記載の被覆シートの敷設方法において、前記遮水シート７は、前記凹凸面１３と、該凹凸面１３の無い平滑面とを備え、該平滑面は、他の遮水シート７との接合に用いることを特徴とする。   The covering sheet laying method according to claim 6 is the covering sheet laying method according to claim 4 or 5, wherein the water shielding sheet 7 includes the uneven surface 13 and a smooth surface without the uneven surface 13. The smooth surface is used for joining with another water-impervious sheet 7.

この被覆シートの敷設方法によれば、遮水シート７に平滑な面を備えることで、この平滑面を他の遮水シート７や不織布９に対しての接着面となる接合代１７を構成することができ、遮水シート７同士の連接構造を可能とする。また、この接合代１７にて不織布９との接着も可能であり、不織布９との積層構成を確実にする。   According to this laying method of the covering sheet, by providing the water-impervious sheet 7 with a smooth surface, the smoothing surface constitutes a bonding margin 17 that becomes an adhesive surface for the other water-impervious sheet 7 and the nonwoven fabric 9. It is possible to connect the water shielding sheets 7 to each other. Further, the bonding allowance 17 can also be bonded to the nonwoven fabric 9 to ensure a laminated structure with the nonwoven fabric 9.

本発明による被覆シートの敷設方法では、不織布の展張後の遮水シートの展張以前、或いは遮水シートの展張後の不織布の展張以前に、低摩擦性シート材を挟み込むように展張配置することで、それぞれの後工程側において、展張位置の調整を行うことが可能となるとともに、その展張作業時においても下側に位置する不織布或いは遮水シートとの間に大きな摩擦を発生させることがなく、低摩擦性シート材上の遮水シート或いは不織布を滑らせることが可能となり、展張作業に煩雑さがなくなり、そして展張後には低摩擦性シート材を取り除くことで、不織布と遮水シートとの互いをずれの生じにくい積層状態とすることが可能となる。そして、位置決めされた状態で、隣り合う遮水シートの端縁同士が接合されることとなり、接合の度に微調整を行うことがなく、煩雑さのない接合作業を行うことが可能となる。   In the laying method of the covering sheet according to the present invention, the low-friction sheet material is stretched and arranged before the nonwoven sheet is stretched after the nonwoven fabric is stretched or before the nonwoven fabric is stretched after the waterproof sheet is stretched. In each subsequent process side, it becomes possible to adjust the stretching position, and without causing large friction between the nonwoven fabric or the water shielding sheet located on the lower side even during the stretching operation, It becomes possible to slide the water-impervious sheet or the nonwoven fabric on the low-friction sheet material, so that the stretching work is not complicated. It is possible to obtain a laminated state in which the deviation is less likely to occur. And the edge of adjacent water-impervious sheet | seats will be joined in the positioned state, and it becomes possible to perform a joining operation | work without complication without performing fine adjustment for every joining.

また、請求項４記載の被覆シートの敷設方法では、展張後に低摩擦性シート材を取り除くことで、遮水シートの凹凸面が、不織布に対して高摩擦で接触対向状態となり、ずれの生じない積層状態を維持させることが可能となる。   Further, in the covering sheet laying method according to claim 4, by removing the low-friction sheet material after spreading, the uneven surface of the water-impervious sheet is brought into a contact-opposed state with high friction with respect to the nonwoven fabric, and no deviation occurs. The stacked state can be maintained.

請求項５記載の被覆シートの敷設方法では、樹脂シートの押出成形の直後に凹凸面が形成され、その凹凸面は溶融樹脂よりなることから、遮水シートとして展張され敷設された状態で不織布に対して高摩擦であり、遮水シートに成型加工などや不織布に対しての接着構造などを新たに追加することなく、積層するのみで互いのずれが防止される。   In the laying method of the covering sheet according to claim 5, since the concavo-convex surface is formed immediately after the extrusion of the resin sheet, and the concavo-convex surface is made of a molten resin, the nonwoven fabric is spread and laid as a water shielding sheet. On the other hand, it is highly frictional, and mutual displacement can be prevented by simply laminating without adding a molding process or an adhesive structure to the nonwoven fabric to the water shielding sheet.

請求項６記載の被覆シートの敷設方法では、遮水シートに平滑な面を備えることで、この平滑面を他の遮水シートや不織布に対しての接着面を構成することができ、遮水シート同士の連接構造を可能とするとともに、不織布との積層構成を確実にする。   In the laying method of the covering sheet according to claim 6, by providing a smooth surface to the water-impervious sheet, this smooth surface can constitute an adhesive surface for other water-impervious sheets and nonwoven fabrics. A connecting structure between sheets is possible, and a laminated structure with a nonwoven fabric is ensured.

本発明による敷設方法にて使用される被覆シートの概略断面図である。It is a schematic sectional drawing of the coating sheet used with the laying method by this invention. 同被覆シートの拡大断面図である。It is an expanded sectional view of the covering sheet. 同被覆シートを構成する遮水シートの一部拡大斜視図である。It is a partially expanded perspective view of the water-impervious sheet constituting the covering sheet. 本発明の被覆シートの敷設手順を（ａ）（ｂ）（ｃ）示した断面図である。It is sectional drawing which showed the laying procedure of the coating sheet of this invention (a) (b) (c). 同被覆シートの敷設手順を（ａ）（ｂ）（ｃ）示した断面図である。It is sectional drawing which showed the laying procedure of the same coating sheet (a) (b) (c). 同被覆シートの敷設手順を（ａ）（ｂ）（ｃ）示した断面図である。It is sectional drawing which showed the laying procedure of the same coating sheet (a) (b) (c). 同被覆シートの敷設手順を示す断面図である。It is sectional drawing which shows the installation procedure of the coating sheet.

まず始めに、本発明の方法で敷設される被覆シートの構造について説明する。
図１は本発明による被覆シートの構造の一実施の形態を示す概略側断面図、図２は同被覆シートの断面図の拡大図である。
被覆シート１は、緩衝層３と遮水層５とが積層され、本実施の形態では、図１に示すように、緩衝層３に遮水層５が挟まれて、これらが交互に複数積層された５層構造とされている。 First, the structure of the covering sheet laid by the method of the present invention will be described.
FIG. 1 is a schematic sectional side view showing an embodiment of the structure of a covering sheet according to the present invention, and FIG. 2 is an enlarged view of the sectional view of the covering sheet.
In the cover sheet 1, the buffer layer 3 and the water shielding layer 5 are laminated, and in this embodiment, as shown in FIG. 1, the water shielding layer 5 is sandwiched between the buffer layers 3, and a plurality of these are alternately laminated. The five-layer structure is made.

遮水層５とされる遮水シート７は、オレフィン系樹脂やポリエチレン系樹脂、ポリプロピレン系樹脂、ポリ塩化ビニル系樹脂よりなり、幅２〜９ｍ、長さ２０〜２００ｍ、厚さ１．０〜２．５ｍｍ、例えば幅７ｍ、長さ約１３０ｍ、厚さ１．５ｍｍの矩形状に形成される。また、緩衝層３とされる不織布９は、遮水シート７と略同長、略同幅な、すなわち略同面積とされ、厚さ約１０ｍｍのポリエステル系樹脂などを素材とする。   The water shielding sheet 7 to be the water shielding layer 5 is made of an olefin resin, a polyethylene resin, a polypropylene resin, or a polyvinyl chloride resin, and has a width of 2 to 9 m, a length of 20 to 200 m, and a thickness of 1.0 to 1.0. It is formed in a rectangular shape of 2.5 mm, for example, a width of 7 m, a length of about 130 m, and a thickness of 1.5 mm. Moreover, the nonwoven fabric 9 used as the buffer layer 3 is made of a polyester resin having approximately the same length and approximately the same width as that of the water-impervious sheet 7, that is, approximately the same area, and a thickness of approximately 10 mm.

本実施の形態の遮水シート７としては、メタロセン系ポリエチレンよりなる遮水シートが用いられ、積層される際に緩衝層である不織布に対して高摩擦となって対向するように、表裏両面に凸部１１が設けられ凹凸面１３を構成している。この凸部１１は、シート表面に付着形成される粒子であり、遮水シート７の素材と同一または同様の樹脂素材からなる樹脂粒子とされる。これら樹脂粒子は、遮水シート７の成形直後に溶融状態の樹脂を吹き付けることで得られ、同素材とすることで遮水シート７との接着性が良好となる。粒子の形状は、特に制限はなく、吹き付けによる不定形なランダム状とされるが、例えば針状、チップ状、角柱状、球状等の成形形状でも良く、尖りがある形状のものが不織布９に対する摩擦係数が大きくなるので好ましい。また粒子形状や大きさは、同一のものがシート表面に分布していてもよく、またその分布も均一であっても不均一であってもよく、すなわち平滑な表面に異形状の凸部１１が多数突設されることとすればよく、不織布９と重ねた際に、この不織布９に対して摩擦が生じて互いに滑ることがなければ良い。   As the water-impervious sheet 7 of the present embodiment, a water-impervious sheet made of metallocene-based polyethylene is used, and on both the front and back sides so as to face the nonwoven fabric that is a buffer layer with high friction when laminated. Convex part 11 is provided and constitutes uneven surface 13. The convex portions 11 are particles that are attached and formed on the sheet surface, and are resin particles made of the same or similar resin material as the material of the water shielding sheet 7. These resin particles are obtained by spraying a molten resin immediately after forming the water-impervious sheet 7, and by using the same material, adhesion to the water-impervious sheet 7 is improved. The shape of the particles is not particularly limited, and is an irregular random shape by spraying, but may be, for example, a needle shape, a chip shape, a prismatic shape, a spherical shape, etc. This is preferable because the friction coefficient is increased. Further, the same particle shape and size may be distributed on the sheet surface, and the distribution may be uniform or non-uniform, that is, the irregularly shaped convex portion 11 on the smooth surface. It is sufficient that a large number of protrusions are provided, and it is preferable that when the nonwoven fabric 9 is overlapped, friction is generated on the nonwoven fabric 9 so as not to slide on each other.

不織布９としては、そのウエブ原料にセルロース繊維、レーヨン繊維、ポリエステル繊維、ポリエチレン繊維、ポリプロピレン繊維、ナイロン繊維、アクリル繊維、ビニロン繊維、ガラス繊維、炭素繊維、フェノール繊維などを使用したものが挙げられ、このうちポリエステル繊維、ポリエチレン繊維、ポリプロピレン繊維、ナイロン繊維などの１種以上を原料としてスパンボンド法あるいはメルトブローン法によって製造されたウエブをケミカルボンド法、ニードルパンチ法、スパンレース法、サーマルボンド法などのいずれかの方法により接着処理して製造された２５〜４００ｇ／ｍ2 目付の不織布が好ましく使用できる。 Examples of the nonwoven fabric 9 include those using cellulose fiber, rayon fiber, polyester fiber, polyethylene fiber, polypropylene fiber, nylon fiber, acrylic fiber, vinylon fiber, glass fiber, carbon fiber, phenol fiber, etc. as the web material. Of these, webs manufactured by the spunbond method or meltblown method using one or more of polyester fiber, polyethylene fiber, polypropylene fiber, nylon fiber, etc. as raw materials can be used for chemical bond method, needle punch method, spunlace method, thermal bond method, etc. A non-woven fabric having a basis weight of 25 to 400 g / m 2 manufactured by an adhesive treatment by any method can be preferably used.

次に、本発明の敷設方法で用いられる低摩擦性シート材１５について説明する。
低摩擦性シート材１５は、例えば樹脂クロスで補強されたシートであるブルーシートや農業用に用いられるシート材であるオレフィン系樹脂フィルムなどとされ、表裏面に凹凸が無く平滑であり、好ましくは上述した遮水シート７や不織布９と略同等の面積に形成される厚さ０．１〜０．３ｍｍのシート材である。この低摩擦性シート材１５は、表裏面が平滑とされることで、上記遮水シート７の凸部１１に引っ掛かることがなく、また、不織布９と絡まるようなことがない。 Next, the low friction sheet material 15 used in the laying method of the present invention will be described.
The low-friction sheet material 15 is, for example, a blue sheet that is a sheet reinforced with a resin cloth or an olefin-based resin film that is a sheet material used for agriculture, and is smooth with no irregularities on the front and back surfaces, preferably It is a sheet material having a thickness of 0.1 to 0.3 mm formed in an area substantially equal to the water shielding sheet 7 and the nonwoven fabric 9 described above. The low-friction sheet material 15 does not get caught by the projections 11 of the water-proof sheet 7 and does not get entangled with the nonwoven fabric 9 because the front and back surfaces are smooth.

次に、上記構成の被覆シートの敷設手順について説明する。
まず、不織布９、遮水シート７及び低摩擦性シート材１５は、それぞれ予め工場内で製作され、所定長さ，所定幅のシート原反を連接するなど、長尺な帯状に成形される。成形された帯状の不織布８や遮水シート７、低摩擦性シート材１５は、ロール状に巻回されて敷設現場に搬出される。 Next, a procedure for laying the covering sheet having the above configuration will be described.
First, the nonwoven fabric 9, the water-impervious sheet 7 and the low friction sheet material 15 are each manufactured in advance in a factory and formed into a long strip shape, such as connecting sheets of a predetermined length and a predetermined width. The formed strip-shaped nonwoven fabric 8, the water-impervious sheet 7, and the low-friction sheet material 15 are wound in a roll shape and carried out to the laying site.

施工現場においては、まず、不織布９が地面１９を覆うように展張され敷設される。展張時は、巻回状態から順次巻き戻すことで行われる。そして、必要な箇所において、幅方向に連なるよう互いに縁部分を重ね、或いは突き合わせて、互いを溶接機などを用いてスポット溶接など断続的ににて溶接して、敷設対象である処分場などの地面を全て覆い、緩衝層３となる。   At the construction site, first, the nonwoven fabric 9 is spread and laid so as to cover the ground 19. At the time of expansion, it is performed by sequentially rewinding from the wound state. And, at the necessary locations, the edge portions are overlapped or butted against each other so as to be continuous in the width direction, and each other is welded intermittently such as spot welding using a welding machine, etc. Covers all the ground and becomes the buffer layer 3.

次に、図４（ａ）に示すように、緩衝層３である不織布９の上面に低摩擦性シート材１５を展張し敷設する。この低摩擦性シート材１５は、展張時に、不織布９に対して精密に位置決めしなくともよく、おおよその位置で不織布９を覆うこととすれば良い。また、不織布９の全面を覆い隠す必要はなく、次工程の遮水シート７展張工程時において、前工程で敷設された不織布９に対し、且つ順次展張・敷設される遮水シート７同士での互いの位置調整の際に、その遮水シート７下面に位置していればよい。   Next, as shown to Fig.4 (a), the low friction sheet material 15 is extended and laid on the upper surface of the nonwoven fabric 9 which is the buffer layer 3. FIG. The low-friction sheet material 15 does not need to be positioned accurately with respect to the nonwoven fabric 9 during the expansion, and may cover the nonwoven fabric 9 at an approximate position. In addition, it is not necessary to cover the entire surface of the nonwoven fabric 9, and at the time of the next water-impervious sheet 7 extension process, the nonwoven sheet 9 laid in the previous process and the water-impervious sheets 7 that are sequentially extended and laid are used together. It suffices if they are positioned on the lower surface of the water-impervious sheet 7 at the time of mutual position adjustment.

次に、図４（ｂ）に示すように、低摩擦性シート材１５の上面に、遮水シート７を巻回状態から巻き戻すように展張する。遮水シート７は、展張当初においては不織布９に対しておおよその位置となるように重ねられる。展張後、遮水シート７は、位置決め補正が行われる。すなわち、低摩擦性シート材１５上に展張状態の遮水シート７を、縁部分を掴み持つなどして、遮水シート７を動かし、敷設位置の調整が行われる。また、遮水シート７は帯状であることから、新たな遮水シート７が幅方向に隣接されてさらに展設される。新たに敷設される遮水シート７は、既に敷設状態となっている遮水シート７と接合が行われる。   Next, as shown in FIG. 4B, the water shielding sheet 7 is spread on the upper surface of the low friction sheet material 15 so as to be rewound from the wound state. The water-impervious sheet 7 is overlaid so as to be approximately positioned with respect to the nonwoven fabric 9 at the beginning of the stretching. After the stretching, the water shielding sheet 7 is subjected to positioning correction. That is, the laid position is adjusted by moving the impermeable sheet 7 by holding the edge of the impermeable sheet 7 in a stretched state on the low friction sheet material 15. Moreover, since the water-impervious sheet 7 is strip-shaped, a new water-impervious sheet 7 is further extended adjacently in the width direction. The impermeable sheet 7 newly laid is joined to the impermeable sheet 7 that has already been laid.

先に敷設された帯状の遮水シート７に対し、新たに敷設される帯状の遮水シート７は、その配置位置を調整されることとなる。その調整は、低摩擦性シート材１５の上面に展張されていることで、容易に滑り動くこととなり、遮水シート７の縁部７ａ等を掴み持ち、位置調整が行われる。すなわち先に敷設された遮水シート７の縁部７ａに合せて、新たに敷設される遮水シート７の縁部７ａを重ね合わせるように調整が行われる。そして、図４（ｃ）に示すように、互いに重ね合わされた縁部同士、すなわち接合代１７を溶接機２１にて接着が行われる。なお、この遮水シート７は、上述したように表裏面に凸部１１が形成されていることから、接合代１７における対向する面同士の密着度が低くなるので、接合代となる箇所に凸部１１を形成しないように、吹き付け付着の際に予めマスキング処理を行うか、或いは溶接前等に研磨作業などで凸部１１を削除して図３に示すように接合代１７を形成し、平滑面同士となるよう成形を行う。   The arrangement | positioning position will be adjusted with respect to the strip | belt-shaped impermeable sheet 7 laid previously, and the strip | belt-shaped impermeable sheet 7 newly laid. The adjustment is carried out on the upper surface of the low-friction sheet material 15, so that it easily slides and grips the edge 7 a of the water shielding sheet 7 to adjust the position. That is, the adjustment is performed so that the edge portion 7a of the water shielding sheet 7 newly laid is overlapped with the edge portion 7a of the water shielding sheet 7 previously laid. And as shown in FIG.4 (c), the edge parts mutually piled up, ie, the joining allowance 17, are adhere | attached with the welding machine 21. FIG. In addition, since the water-impervious sheet 7 has the convex portions 11 formed on the front and back surfaces as described above, the degree of adhesion between the opposing surfaces in the joint allowance 17 is low, so that the convex portion is formed at the joint allowance portion. In order not to form the portion 11, masking treatment is performed in advance at the time of spray attachment, or the convex portion 11 is deleted by polishing work before welding or the like to form the joining margin 17 as shown in FIG. Molding is performed so that the surfaces are aligned.

遮水シート７の展張とシート同士の接合が完了されると、図５（ａ）に示すように、この遮水シート７の下部に位置している低摩擦性シート材１５を取り除く（矢線Ａ）。すなわち敷設された遮水シート７と不織布９との間から、低摩擦性シート材１５を引き抜き、取り除く。取り除く際には、不織布９に対しても遮水シート７に対しても摩擦が大きく働かず、容易に抜き出すことが可能である。
低摩擦性シート材１５が取り除かれることで、不織布９の上面と遮水シート７の下面とが対向し（図５（ｂ）参照）、遮水シート７の凸部１１による凹凸面１３が不織布９に絡み、高摩擦な接触状態となり、これにより不織布９と遮水シート７との滑りによるずれの発生を防ぐことが可能となる。 When the expansion of the water-impervious sheet 7 and the joining of the sheets are completed, as shown in FIG. 5A, the low-friction sheet material 15 located at the lower part of the water-impervious sheet 7 is removed (arrow line) A). That is, the low-friction sheet material 15 is pulled out and removed from between the laid water-impervious sheet 7 and the nonwoven fabric 9. When removing, the friction does not act greatly on the non-woven fabric 9 and the water-impervious sheet 7 and can be easily extracted.
By removing the low-friction sheet material 15, the upper surface of the nonwoven fabric 9 and the lower surface of the water-impervious sheet 7 face each other (see FIG. 5B), and the uneven surface 13 formed by the convex portions 11 of the water-impervious sheet 7 is the nonwoven fabric. 9, and a contact state with high friction is obtained, thereby preventing the occurrence of displacement due to slippage between the nonwoven fabric 9 and the water shielding sheet 7.

次に、図５（ｂ）に示すように、敷設された遮水シート７の上面に、再度低摩擦性シート材１５が展設される。すなわち上記した不織布９の上面に展張される手順と同様に、特に位置決めをすることなく、おおよその位置で遮水シート７を覆う。この工程においても、上記同様に遮水シート７の全面を覆い隠すこととしてもよく、或いは部分的、段階的に覆うこととしてもよい。   Next, as shown in FIG. 5B, the low friction sheet material 15 is laid again on the upper surface of the laid water shielding sheet 7. That is, similarly to the procedure of spreading on the upper surface of the nonwoven fabric 9 described above, the water shielding sheet 7 is covered at an approximate position without positioning. Also in this process, it is good also as covering the whole surface of the water-proof sheet | seat 7 similarly to the above, or good also as covering partially and stepwise.

次に低摩擦性シート材１５の上面に、図５（ｃ）に示すように、不織布９が展張される。展張された不織布９は、低摩擦性シート材１５上であることで、遮水シート７の凹凸面１３に引っ掛かることなく、展張直後の状態から最適な位置へと調整が行われる。すなわち好ましい位置に調整が可能となっている。また、このときに、この不織布９を連接することとしてもよく、すなわち帯状の不織布９を幅方向に隣り合わせて、互いの縁部分を溶接機等で接着する。   Next, the nonwoven fabric 9 is spread on the upper surface of the low friction sheet material 15 as shown in FIG. The stretched nonwoven fabric 9 is on the low-friction sheet material 15, so that the stretched nonwoven fabric 9 is adjusted from the state immediately after the stretch to the optimum position without being caught by the uneven surface 13 of the water shielding sheet 7. That is, adjustment to a preferable position is possible. At this time, the nonwoven fabrics 9 may be connected to each other. That is, the strip-shaped nonwoven fabrics 9 are adjacent to each other in the width direction, and the edge portions of each are bonded with a welding machine or the like.

不織布９の展張、敷設を終えたら、図６（ａ）に示すように、この不織布９とその下面の遮水シート７との間にある低摩擦性シート材１５を取り除く（矢線Ｂ）。上記同様、上下に位置する不織布９及び遮水シート７に対しての摩擦が小さく、容易に抜き出すことが可能である。そしてこの低摩擦性シート材１５が取り除かれることで、遮水シート７上面の凸部１１が不織布９に引っ掛かることとなり、滑りによるずれの発生が防止される。   When the non-woven fabric 9 has been spread and laid, as shown in FIG. 6A, the low-friction sheet material 15 between the non-woven fabric 9 and the water shielding sheet 7 on the lower surface thereof is removed (arrow B). Similar to the above, the friction with respect to the nonwoven fabric 9 and the water-impervious sheet 7 positioned above and below is small and can be easily extracted. Then, by removing the low friction sheet material 15, the convex portion 11 on the upper surface of the water shielding sheet 7 is caught by the nonwoven fabric 9, and the occurrence of displacement due to slipping is prevented.

その後、上記と同様に、図６（ｂ）に示すように低摩擦性シート材１５の展張、図６（ｃ）に示すように遮水シート７の展張、図７に示すように低摩擦性シート材１５の除去、低摩擦性シート材１５の展張、不織布９の展張、低摩擦性シート材１５の除去、と順に行うことで、図１に示すように不織布９による緩衝層３と遮水シート７による遮水層５との５層構造の被覆シート１となる。   Thereafter, similarly to the above, the low-friction sheet material 15 is stretched as shown in FIG. 6B, the waterproof sheet 7 is stretched as shown in FIG. 6C, and the low-friction property is shown as FIG. By removing the sheet material 15, spreading the low-friction sheet material 15, spreading the nonwoven fabric 9, and removing the low-friction sheet material 15 in this order, the buffer layer 3 and the water shielding layer by the nonwoven fabric 9 as shown in FIG. It becomes the covering sheet 1 having a five-layer structure with the water shielding layer 5 by the sheet 7.

従ってこのように構成された被覆シート１では、保護対象面である地面１９に対して、不織布９よりなる緩衝層３が構成され、この緩衝層３に遮水シート７よりなる遮水層５が積層配置されており、緩衝層３と遮水層５とが複数積層されて構成され、漏水などを防ぐ遮水層５となる遮水シート７を緩衝層３となる不織布９で挟むとともに、この構成を二重に構成しており、そして積層状態において、遮水シート７の凹凸面１３が不織布９の表面に高摩擦状態で接触し、互いのずれ発生を防ぐことが可能となる。特にこの敷設方法は、法面（斜面）での施工に有利である。   Therefore, in the covering sheet 1 configured in this way, the buffer layer 3 made of the nonwoven fabric 9 is formed on the ground 19 that is the surface to be protected, and the water blocking layer 5 made of the water blocking sheet 7 is formed on the buffer layer 3. A plurality of buffer layers 3 and a water shielding layer 5 are laminated, and a water shielding sheet 7 to be a water shielding layer 5 for preventing water leakage and the like is sandwiched between nonwoven fabrics 9 to be a buffer layer 3, and this In the laminated state, the uneven surface 13 of the water-impervious sheet 7 is in contact with the surface of the nonwoven fabric 9 in a high friction state, and it is possible to prevent the occurrence of misalignment. This laying method is particularly advantageous for construction on a slope (slope).

また、遮水層５の表裏面に緩衝層３が設けられる構成となることから、処理場として廃棄物が投入された際の、この廃棄物による破損を防ぐことができるとともに、貯留部の底面となる地面１９に対しても緩衝作用を備えたものとなる。このことから破損の起きにくい遮水構造を得ることが可能となる。   In addition, since the buffer layer 3 is provided on the front and back surfaces of the water-impervious layer 5, it is possible to prevent damage due to the waste when the waste is thrown in as a treatment plant, and the bottom surface of the storage portion. The ground surface 19 is also provided with a buffering action. From this, it becomes possible to obtain a water shielding structure that is less likely to break.

また、この被覆シート１の敷設方法では、不織布９の展張後の遮水シート７の展張以前、或いは遮水シート７の展張後の不織布９の展張以前に、低摩擦性シート材１５を挟み込むように展張配置することで、それぞれの後工程側において、展張位置の調整を行うことが可能となるとともに、その展張作業時においても下側に位置する不織布９或いは遮水シート７との間に大きな摩擦を発生させることがなく、互いを滑らせることが可能となり、そして低摩擦性シート材１５を取り除くことで、不織布９と遮水シート７との互いを高摩擦で接触対向状態として、ずれの生じない積層状態を維持させることが可能となる。   Moreover, in this laying method of the covering sheet 1, the low-friction sheet material 15 is sandwiched before the waterproof sheet 7 after the nonwoven fabric 9 is stretched or before the nonwoven sheet 9 is stretched after the waterproof sheet 7 is stretched. It is possible to adjust the extension position on each subsequent process side by arranging the extension to each other, and a large gap between the nonwoven fabric 9 or the water shielding sheet 7 located on the lower side even during the extension operation. It becomes possible to slide each other without generating friction, and by removing the low-friction sheet material 15, the non-woven fabric 9 and the water-impervious sheet 7 are brought into contact with each other with high friction, so It is possible to maintain a laminated state that does not occur.

１…被覆シート
３…緩衝層
５…遮水層
７…遮水シート
９…不織布
１３…凹凸面
１５…低摩擦性シート材
１７…接合代
１９…保護対象面（地面） DESCRIPTION OF SYMBOLS 1 ... Cover sheet 3 ... Buffer layer 5 ... Water shielding layer 7 ... Water shielding sheet 9 ... Nonwoven fabric 13 ... Uneven surface 15 ... Low friction sheet material 17 ... Bonding margin 19 ... Surface to be protected (ground)

Claims (6)

緩衝層となる不織布と、遮水層となる遮水シートとをそれぞれ順次展張し積層させるとともに、前記各層の少なくとも遮水シートの隣り合う端縁を互いに接着して、保護対象面を覆うシート材の敷設方法であって、
前記不織布の展張後、又は前記遮水シートの展張後に、低摩擦性シート材を展張して前記不織布又は遮水シートの上面を覆い、
展張された前記低摩擦シート材の上に、前記不織布が下層となる場合には遮水シートを、前記遮水シートが下層となる場合には不織布を展張し、
前記低摩擦シート材の上面に展張される前記不織布又は遮水シートの端縁を、隣接する他の不織布又は遮水シートの端縁に沿わせて位置調整を行い、
その後、前記低摩擦シート材を前記不織布と遮水シートとの間から引き抜き、
該不織布と遮水シートとを積層配置とすることを特徴とするシート材の敷設方法。 A sheet material that covers a surface to be protected by spreading and laminating a nonwoven fabric to be a buffer layer and a water shielding sheet to be a water shielding layer sequentially, and adhering at least adjacent edges of the water shielding sheets of each layer to each other. Laying method,
After stretching the nonwoven fabric or after stretching the water shielding sheet, a low friction sheet material is stretched to cover the top surface of the nonwoven fabric or water shielding sheet,
On the stretched low-friction sheet material, when the nonwoven fabric is a lower layer, a waterproof sheet, and when the waterproof sheet is a lower layer, stretch the nonwoven fabric,
Adjust the position of the edge of the nonwoven fabric or water shielding sheet stretched on the upper surface of the low friction sheet material along the edge of another adjacent nonwoven fabric or water shielding sheet,
Thereafter, the low friction sheet material is pulled out from between the nonwoven fabric and the water shielding sheet,
A method for laying a sheet material, characterized in that the nonwoven fabric and the water-impervious sheet are laminated. 緩衝層となる不織布と、遮水層となる遮水シートとをそれぞれ順次展張し積層させるとともに、前記各層の少なくとも遮水シートの隣り合う端縁を互いに接着して、保護対象面を覆うシート材の敷設方法であって、
前記不織布の展張後、又は前記遮水シートの展張後に、低摩擦性シート材を展張して前記不織布又は遮水シートの上面を覆い、
展張された前記低摩擦シート材の上に、前記不織布が下層となる場合には遮水シートを、前記遮水シートが下層となる場合には不織布を展張し、
前記低摩擦シート材の上面に展張される前記不織布又は遮水シートの端縁を、隣接する他の不織布又は遮水シートの端縁に沿わせて位置調整を行い、
該位置調整後に、前記低摩擦シート材の上に前記遮水シートが展張状態である場合では、該遮水シートの互いに隣り合う端縁同士を接合し、
その後、前記低摩擦シート材を前記不織布と遮水シートとの間から引き抜き、
該不織布と遮水シートとを積層配置とすることを特徴とするシート材の敷設方法。 A sheet material that covers a surface to be protected by spreading and laminating a nonwoven fabric to be a buffer layer and a water shielding sheet to be a water shielding layer sequentially, and adhering at least adjacent edges of the water shielding sheets of each layer to each other. Laying method,
After stretching the nonwoven fabric or after stretching the water shielding sheet, a low friction sheet material is stretched to cover the top surface of the nonwoven fabric or water shielding sheet,
On the stretched low-friction sheet material, when the nonwoven fabric is a lower layer, a waterproof sheet, and when the waterproof sheet is a lower layer, stretch the nonwoven fabric,
Adjust the position of the edge of the nonwoven fabric or water shielding sheet stretched on the upper surface of the low friction sheet material along the edge of another adjacent nonwoven fabric or water shielding sheet,
After the position adjustment, when the waterproof sheet is in a stretched state on the low friction sheet material, the adjacent edges of the waterproof sheet are joined together,
Thereafter, the low friction sheet material is pulled out from between the nonwoven fabric and the water shielding sheet,
A method for laying a sheet material, characterized in that the nonwoven fabric and the water-impervious sheet are laminated. 緩衝層となる不織布と、遮水層となる遮水シートとをそれぞれ順次展張し積層させるとともに、前記各層の少なくとも遮水シートの隣り合う端縁を互いに接着して、保護対象面を覆うシート材の敷設方法であって、
前記不織布の展張後、又は前記遮水シートの展張後に、低摩擦性シート材を展張して前記不織布又は遮水シートの上面を覆い、
展張された前記低摩擦シート材の上に、前記不織布が下層となる場合には遮水シートを、前記遮水シートが下層となる場合には不織布を展張し、
前記低摩擦シート材の上面に展張される前記不織布又は遮水シートの端縁を、隣接する他の不織布又は遮水シートの端縁に沿わせて位置調整を行い、
該位置調整後に前記低摩擦シート材を前記不織布と遮水シートとの間から引き抜き、
その後、前記不織布の上に前記遮水シートが展張状態である場合では、該遮水シートの互いに隣り合う端縁同士を接合し、
該不織布と遮水シートとを積層配置とすることを特徴とするシート材の敷設方法。 A sheet material that covers a surface to be protected by spreading and laminating a nonwoven fabric to be a buffer layer and a water shielding sheet to be a water shielding layer sequentially, and adhering at least adjacent edges of the water shielding sheets of each layer to each other. Laying method,
After stretching the nonwoven fabric or after stretching the water shielding sheet, a low friction sheet material is stretched to cover the top surface of the nonwoven fabric or water shielding sheet,
On the stretched low-friction sheet material, when the nonwoven fabric is a lower layer, a waterproof sheet, and when the waterproof sheet is a lower layer, stretch the nonwoven fabric,
Adjust the position of the edge of the nonwoven fabric or water shielding sheet stretched on the upper surface of the low friction sheet material along the edge of another adjacent nonwoven fabric or water shielding sheet,
After the position adjustment, pull out the low friction sheet material from between the nonwoven fabric and the water shielding sheet,
Then, in the case where the waterproof sheet is in a stretched state on the nonwoven fabric, the adjacent edges of the waterproof sheet are joined together,
A method for laying a sheet material, characterized in that the nonwoven fabric and the water-impervious sheet are laminated. 前記遮水シートは、前記不織布に対向する面に、該不織布に対して高摩擦に接触となる凹凸面を有することを特徴とする請求項１又は２又は３記載のシート材の敷設方法。   The method for laying a sheet material according to claim 1, 2 or 3, wherein the water-impervious sheet has an uneven surface that comes into contact with the nonwoven fabric with high friction on the surface facing the nonwoven fabric. 前記凹凸面は、樹脂シートの押出成形直後に溶融樹脂をランダムに吹き付けて得ることを特徴とする請求項４記載のシート材の敷設方法。 5. The sheet material laying method according to claim 4, wherein the uneven surface is obtained by spraying a molten resin at random immediately after extrusion molding of the resin sheet. 前記遮水シートは、前記凹凸面と、該凹凸面の無い平滑面とを備え、該平滑面は、他の遮水シートとの接合に用いることを特徴とする請求項４又は５記載のシート材の敷設方法。   The sheet according to claim 4 or 5, wherein the water-impervious sheet includes the uneven surface and a smooth surface without the uneven surface, and the smooth surface is used for joining with another water-impervious sheet. How to lay the material.
JP2010224894A 2010-10-04 2010-10-04 Laying method of covering sheet Expired - Fee Related JP5636246B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2010224894A JP5636246B2 (en) 2010-10-04 2010-10-04 Laying method of covering sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010224894A JP5636246B2 (en) 2010-10-04 2010-10-04 Laying method of covering sheet

Publications (2)

Publication Number Publication Date
JP2012076043A true JP2012076043A (en) 2012-04-19
JP5636246B2 JP5636246B2 (en) 2014-12-03

Family

ID=46236903

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2010224894A Expired - Fee Related JP5636246B2 (en) 2010-10-04 2010-10-04 Laying method of covering sheet

Country Status (1)

Country Link
JP (1) JP5636246B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015161123A (en) * 2014-02-27 2015-09-07 公益財団法人鉄道総合技術研究所 Cell assembly, construction method of cell assembly and construction structure of cell assembly
CN105683434A (en) * 2013-10-29 2016-06-15 东洋纺株式会社 Network structure having excellent durability against compression

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6335905A (en) * 1986-07-30 1988-02-16 Yamamizu Sangyo Kk Connecting and laying work of protection sheet for civil construction work
JP2002316117A (en) * 2001-04-18 2002-10-29 Hiraoka & Co Ltd Impervious sheet for construction work
JP2003136033A (en) * 2001-11-01 2003-05-13 Nishimatsu Constr Co Ltd Impervious sheet and impervious structure
JP2005155317A (en) * 2003-11-06 2005-06-16 Mitsubishi Chem Mkv Co Sheet for civil engineering
JP2005161312A (en) * 2004-12-16 2005-06-23 Toyo Constr Co Ltd Water barrier sheet
JP2008221052A (en) * 2007-03-09 2008-09-25 Unitika Ltd Construction method of protection mat for impermeable sheet
JP2008265036A (en) * 2007-04-16 2008-11-06 Taiyo Kogyo Corp Impervious sheet, its manufacturing method, impervious structure, and revetment

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6335905A (en) * 1986-07-30 1988-02-16 Yamamizu Sangyo Kk Connecting and laying work of protection sheet for civil construction work
JP2002316117A (en) * 2001-04-18 2002-10-29 Hiraoka & Co Ltd Impervious sheet for construction work
JP2003136033A (en) * 2001-11-01 2003-05-13 Nishimatsu Constr Co Ltd Impervious sheet and impervious structure
JP2005155317A (en) * 2003-11-06 2005-06-16 Mitsubishi Chem Mkv Co Sheet for civil engineering
JP2005161312A (en) * 2004-12-16 2005-06-23 Toyo Constr Co Ltd Water barrier sheet
JP2008221052A (en) * 2007-03-09 2008-09-25 Unitika Ltd Construction method of protection mat for impermeable sheet
JP2008265036A (en) * 2007-04-16 2008-11-06 Taiyo Kogyo Corp Impervious sheet, its manufacturing method, impervious structure, and revetment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105683434A (en) * 2013-10-29 2016-06-15 东洋纺株式会社 Network structure having excellent durability against compression
JP2015161123A (en) * 2014-02-27 2015-09-07 公益財団法人鉄道総合技術研究所 Cell assembly, construction method of cell assembly and construction structure of cell assembly

Also Published As

Publication number Publication date
JP5636246B2 (en) 2014-12-03

Similar Documents

Publication Publication Date Title
JP4358133B2 (en) A sheet material, a block-shaped sheet material, a method for producing the sheet material, and a method for separating and collecting the fiber-forming layer unit and the backing layer from the tile carpet.
JP5636246B2 (en) Laying method of covering sheet
JP4863252B2 (en) Fiber forming layer material or block or elongate sheet material and method of using the same
JP5476623B2 (en) Waterproof coating method
JP2005034013A (en) Weed-proof sheet
JP2009183878A (en) Method for laying capping sheet and capping sheet to be used therefor
CN211646998U (en) Waterproof and drainage integrated plate
JP2004019411A (en) Underlay tape for cutting cloth
JP6540197B2 (en) Laminated sheet and joining method of laminated sheet
JP3056828B2 (en) Waterproof construction method
JP2008221052A (en) Construction method of protection mat for impermeable sheet
JP5789496B2 (en) How to lay river still water mats
JP2004239619A (en) Surface electrode sheet body having protective layer
JP2001064940A (en) Erosion-control sheet and suction preventive construction method
JPH11179321A (en) Water-sealing sheet for waste disposal site
JP2015194048A (en) Waterproof sheet for building substrate
JP4312925B2 (en) Nonwoven fabric bonding structure
JP3096977B2 (en) Impermeable sheet
JP2003001215A (en) Application method of impervious sheet protecting material
JP2001314830A (en) Protective mat with slip prevention function used in waste disposal facility
JPS646283Y2 (en)
AU2003277055B2 (en) Waterproofing material
CN213704758U (en) Preset lapping agent type sodium bentonite waterproof blanket
JP3325170B2 (en) Manufacturing method of earthwork frame
JP2021112175A (en) Two-sided adhesive tape and installation method for weed-proof sheet

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20130925

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20141002

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20141014

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20141020

R150 Certificate of patent or registration of utility model

Ref document number: 5636246

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313111

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees