JPS62279923A - Method of lining drainpipe - Google Patents
Method of lining drainpipeInfo
- Publication number
- JPS62279923A JPS62279923A JP12498386A JP12498386A JPS62279923A JP S62279923 A JPS62279923 A JP S62279923A JP 12498386 A JP12498386 A JP 12498386A JP 12498386 A JP12498386 A JP 12498386A JP S62279923 A JPS62279923 A JP S62279923A
- Authority
- JP
- Japan
- Prior art keywords
- lining material
- sewer pipe
- lining
- pipe
- water
- 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
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 94
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000012530 fluid Substances 0.000 claims abstract description 27
- 239000000853 adhesive Substances 0.000 claims abstract description 22
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 229920001971 elastomer Polymers 0.000 claims abstract description 4
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 4
- 239000000057 synthetic resin Substances 0.000 claims abstract description 4
- 239000002759 woven fabric Substances 0.000 claims abstract description 4
- 230000001070 adhesive effect Effects 0.000 claims description 18
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 239000006096 absorbing agent Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 4
- 239000012779 reinforcing material Substances 0.000 claims description 3
- 244000043261 Hevea brasiliensis Species 0.000 claims description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 229920003052 natural elastomer Polymers 0.000 claims description 2
- 229920001194 natural rubber Polymers 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims 1
- 229920000915 polyvinyl chloride Polymers 0.000 claims 1
- 239000004800 polyvinyl chloride Substances 0.000 claims 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical group [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims 1
- 239000000835 fiber Substances 0.000 abstract description 6
- 239000013013 elastic material Substances 0.000 abstract 1
- 239000010865 sewage Substances 0.000 description 18
- 239000003673 groundwater Substances 0.000 description 8
- 230000003014 reinforcing effect Effects 0.000 description 5
- 239000002351 wastewater Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
産業上の利用分野
本光明は、地中に埋設された下水道管の内面に内張り材
を貼り付けて内張すするための方法に関するものである
。[Detailed Description of the Invention] 3. Detailed Description of the Invention Industrial Application Field This invention relates to a method for lining the inner surface of a sewer pipe buried underground by pasting a lining material on the inner surface. be.
下水道は通常汚水よすに汚水を集め、該汚水まずは内径
１５０ｍＩＩｌ程度の取付管を介して内在的２５０〜３
００ＩＩＩｍの枝管に）妄続されている。枝管には所々
にマンホールが形成されており、該マンホールからさら
に大口径の本管に接続されている。Sewers usually collect sewage in a sewage system, and the sewage is first transported through an attached pipe with an inner diameter of about 150 mII to an internal pipe of 250 to 3
00IIIm branch pipe). Manholes are formed in the branch pipes in places, and the manholes are connected to the main pipe with a larger diameter.
そして汚水まずに集められた汚水は、取付管を経て枝管
に流入し、ざらにマンホールから木管に流入し、処理場
に集められる。The sewage that is collected first flows through the attached pipe, into the branch pipe, and roughly through the manhole into the wood pipe, where it is collected at the treatment plant.
ところで下水道管は、通常土管、陶管、コンクリート管
等が使用される。汚水はその成分が常に一定ではな（、
ときには腐蝕性の酸やアルカリ等を含むこともあるので
、金属管を使用することが困難であり、前述のような耐
腐蝕性の管が使用されるのである。By the way, clay pipes, ceramic pipes, concrete pipes, etc. are usually used as sewer pipes. The components of sewage are not always constant (,
Since it sometimes contains corrosive acids and alkalis, it is difficult to use metal tubes, so corrosion-resistant tubes such as those mentioned above are used.
しかしながらこれらの管は、その継手部分は一方の管の
端末を、他方の管の端末に形成された大径部に嵌合して
いて暖み易く、また外力によりひび割れしたり折れたり
して破損しやすいものである。従ってその緩んだ継手部
分や損傷した部分から地下水や雨水が侵入し、汚水の呈
が増大することがある。However, the joints of these pipes fit the end of one pipe into a large-diameter part formed at the end of the other pipe, making them easy to heat up and cracking or breaking due to external force. It's easy to do. Therefore, groundwater or rainwater may enter through loose or damaged joints, increasing the level of sewage.
本来地中の地下水や雨水は、そのまま放流しても同等差
支えないものであるが、これが−置方水中に混入すると
それを分離することは不可能であり、処理すべき汚水の
量が大幅に増大することになり、汚水処理の設備として
大規模なものが必要となる・
従って、下水道管に地下水や雨水が流入するのを防１卜
シ、少ａの真に処理する必要のある汚水のみを処理場に
集めることにより、小規模の汚水処理設備で必要な汚水
をすべて処理することが可能となり、地下水等が流入す
るのを防止するために、この下水道管に内張すすること
が必要とされるのである。Originally underground groundwater and rainwater can be discharged as is, but if this water gets mixed into the water, it is impossible to separate it, and the amount of sewage that needs to be treated is significantly reduced. As a result, large-scale sewage treatment equipment is required. Therefore, it is necessary to prevent groundwater and rainwater from flowing into the sewer pipes, and to treat only small amounts of sewage that truly needs to be treated. By collecting wastewater at a treatment plant, it is possible to treat all the necessary wastewater with a small-scale wastewater treatment facility.In order to prevent underground water from flowing in, it is necessary to line the sewer pipes with lining. It is said that
従来の技術
従来一般に地中に埋設された管路に内張り材を施す方法
として、内面に接着剤を塗布した筒状の柔軟な内張り材
を、流体圧力で内外面を裏返しながら管路内に挿通し、
裏返った内張り材を前記流体圧力で管路内面に圧着して
、前記接着剤を介しで接着する方法が知られている。こ
の方法は通常ガス導管・虐水道＠等に適用される方法で
あるが、基本的には下水道管についても適用可能なもの
である。Conventional technology The conventional method for lining underground pipelines is to insert a cylindrical flexible lining material coated with adhesive onto the inner surface into the pipeline while turning the inner and outer surfaces inside out using fluid pressure. death,
A method is known in which the turned-over lining material is pressed onto the inner surface of the pipe line using the fluid pressure and bonded with the adhesive. This method is usually applied to gas pipelines, waste water pipes, etc., but it is also basically applicable to sewer pipes.
発明が解決しようとする問題点
しかしながら前記方法を下水道管に適用する場合には、
下水道管特有の問題が生じる。すなわち、ガス導管や水
道管においては内部を流通する流体には圧力がかかつて
おり、内張すされた内張り材はその圧力によって拡圧さ
れ、常時管路の内面に圧接された状態となる。従ってこ
れらの管路においては、外からの圧力によって内張り材
が管路内 面から剥がれるということはほとんど考慮
する必要がなく、また内部の流体が損傷部分から外部に
漏出することは、内張り材によって極めて有効に防止さ
れる。Problems to be solved by the invention However, when applying the above method to sewer pipes,
Problems unique to sewer pipes arise. That is, in gas pipes and water pipes, the fluid flowing inside the pipe is under high pressure, and the lining material is expanded by the pressure and is always in pressure contact with the inner surface of the pipe. Therefore, in these pipelines, there is almost no need to consider that the lining material will peel off from the inner surface of the pipeline due to external pressure, and the lining material will prevent the internal fluid from leaking to the outside from the damaged area. Very effectively prevented.
しかしながら下水道管の場合には、管路内には圧力はか
かっておらず、部っで地下水や雨水等の外部の水によっ
て外圧が加わった状態となっている。従ってこれらの外
部の水は管路の継手部分やひび割れから流入し、内張り
材に外圧をｈｏえるので、内張すした内張り材（よこ机
らの外圧に耐え１１するちのでなレノればならない。However, in the case of a sewer pipe, there is no pressure inside the pipe, and external pressure is applied in some areas by external water such as groundwater or rainwater. Therefore, these external water flows in through joints and cracks in the pipes and exerts external pressure on the lining material. .
また下水道管は前述のように継手部分の暖みやひび割れ
の部分から常時外部の水が流入して、恒路の内面は常時
濡れているので、内張り材を管路の内面に確実に強固に
接着することは極めてｌ１である。しかも前）ホのよう
に継手部分やひび割れから水が流入するので、その水は
管路と内張り材との接着の弱い部分に沿って内張り材と
管路との間を流れてその１と着を剥がし、さらに内張り
材の端末や分岐部等の内張り材の端縁がら管路内に流入
することになり、外部の水が流入することによる汚水吊
の増大を防止するという効果を秦し得ず、下水道管に内
張りを施すことの意味が失われてしまうのである。In addition, as mentioned above, outside water constantly flows into sewer pipes through the warmth of the joints and cracks, and the inner surface of the pipe is always wet, so the lining material must be firmly bonded to the inner surface of the pipe. It is very l1 to do. Furthermore, water flows in from the joints and cracks as shown in (E) above, so the water flows between the lining material and the pipe along the weakly bonded areas between the pipe and the lining material and arrives at the pipe. In addition, the ends of the lining material and the edges of the lining material, such as branching parts, will flow into the pipe, which has the effect of preventing an increase in sewage volume due to the inflow of outside water. First, the meaning of lining sewer pipes is lost.
本発明はかかる事情に鑑みなされたものであって、内張
り後において内張り材が地下水や雨水等による外水圧に
耐え、また内張り材と管路との接着が不十分でない場合
においても地下ホウ雨水が汚水に混入することのない内
張り（１°４）古を得るための、内張り方法を提供する
ことを目的とするものである。The present invention was developed in view of the above circumstances, and the lining material can withstand external water pressure due to underground water, rainwater, etc. after lining, and even if the lining material and the pipe are not sufficiently bonded, underground rainwater can The object of the present invention is to provide a lining method for obtaining a lining (1°4) that does not mix with sewage.
問題点を解決する手段
而して本発明は、下水道管の両）席の内周面及び分岐管
の分岐部の下水道管の内周面に、ゴム状弾性体よりなる
弾性リングを形成し、筒状の織布又は不織布等の繊維質
補強体の外面にゴム又は合成樹脂よりなる柔軟な気密層
を形成してなる内張り材の内面に、反応硬化型接着剤を
塗布して該接着剤を竹記繊Ｍ貿補強体に含浸せしめ、そ
の内張り材を下水道管の外部の水圧よりも高い流体圧力
で内外面を裏返しながら前記下水道管に挿通し、前記流
体圧力を随時して裏返った内張り材を下水道管の内面に
圧着しつつ前記接着剤を硬化せしめることを特徴とする
ものである。As a means for solving the problem, the present invention forms an elastic ring made of a rubber-like elastic body on the inner circumferential surface of both seats of the sewer pipe and the inner circumferential surface of the sewer pipe at the branch part of the branch pipe, A reaction-curing adhesive is applied to the inner surface of the lining material, which is made by forming a flexible airtight layer made of rubber or synthetic resin on the outer surface of a fibrous reinforcement such as a cylindrical woven or non-woven fabric. A lining material impregnated with Bamboo fiber M trade reinforcing material, inserted into the sewer pipe while turning the inner and outer surfaces inside out under a fluid pressure higher than the water pressure outside the sewer pipe, and turning the lining material inside out at any time while applying the fluid pressure. The method is characterized in that the adhesive is cured while being pressure-bonded to the inner surface of the sewer pipe.
以下本発明の方法を下水道管の枝管について適用した場
合を説明する。枝管１には第１図に示すように数十ｍ乃
至数百ｍ毎にマンホール２が形成されており、該〜のマ
ンボール２から次のマンホール２までの間を一回の工事
で内張すする。枝管１には必要に応じて適宜の箇所に取
付管３が取付けられており、該取付管３は汚水ます４に
接続されている。なお以下の説明においては枝管１に内
張すする方法として説明するが、取付管３や本管につい
ても同様に適用できるものであることは言うまでもない
。The case where the method of the present invention is applied to a branch pipe of a sewer pipe will be described below. As shown in Fig. 1, manholes 2 are formed in the branch pipe 1 every several tens to hundreds of meters, and the area from one manhole 2 to the next manhole 2 can be covered in one construction. Stretch. An attachment pipe 3 is attached to the branch pipe 1 at an appropriate location as required, and the attachment pipe 3 is connected to a wastewater basin 4. In the following explanation, a method of lining the branch pipe 1 will be explained, but it goes without saying that the method can be similarly applied to the attachment pipe 3 and the main pipe.
先ず枝管１の端末すなわちマンボール２への間口部の内
周面及び、該枝管１から取付管３が分岐している場合に
（よその取付管３の分岐部における枝管１の内周面に、
ゴム状弾性体よりなる弾性リング５を形成する。該弾性
リング５を構成するゴム状弾性体の素材としては、天然
ゴム、ポリウレタン又は軟！ゴボリ塩化ビニール等の、
易圧縮性の材料を使用し、これらの素材を成型して弾性
リング５とし、これを枝管１の内周面に嵌着するのが適
当である。また枝管１の内周面にポリウレタン等の二液
反応硬化型弾性樹脂液を塗イ５して硬化させることに」
：り弾性リング５を形成することもできろ。ざらに不織
布やスポンジ等の多孔質の木材に、エポキシ樹脂液を含
浸したものを使用することもできる。First, the end of the branch pipe 1, that is, the inner peripheral surface of the frontage to the man ball 2, and when the attachment pipe 3 branches from the branch pipe 1 (the inner circumferential surface of the branch pipe 1 at the branch part of the other attachment pipe 3). On the circumference,
An elastic ring 5 made of a rubber-like elastic body is formed. The rubber-like elastic body constituting the elastic ring 5 may be made of natural rubber, polyurethane, or soft! Gobori vinyl chloride, etc.
It is appropriate to use easily compressible materials, mold these materials to form the elastic ring 5, and fit this into the inner peripheral surface of the branch pipe 1. In addition, a two-component reaction-curing elastic resin liquid such as polyurethane is applied to the inner circumferential surface of the branch pipe 1 and cured.
: It is also possible to form the elastic ring 5. It is also possible to use porous wood such as non-woven fabric or sponge impregnated with epoxy resin liquid.
またこれらのゴム状弾性体として、水を吸収して膨潤す
る吸水剤を含有するものを使用するのが望ましい。この
吸水；１１１としては、ポリアクリル駿ソーダ若しくは
ポリビニルアルコール又はそれらの共重合体が適当であ
る。It is also desirable to use, as these rubber-like elastic bodies, those containing a water-absorbing agent that absorbs water and swells. As this water absorption material 111, polyacrylic soda, polyvinyl alcohol, or a copolymer thereof is suitable.
枝管１の両端の内周面及び取付管３の分岐部の内周面に
この弾性リング５を形成した後、この枝管１に内張り材
６を流体圧力で裏返しながら挿通する。内張り材６は第
２図に示すように、筒状織布又は不織イ１１等の繊維質
補強体７の外面にゴム又は合成樹脂よりなる柔軟な気富
、層８を形成してなるものであって、内面に反応硬化型
１妄着剤が塗布されており、該接着剤は前記繊維Ｆ ｉ
＋ｉ強体７に含浸されている。After forming the elastic rings 5 on the inner circumferential surfaces of both ends of the branch pipe 1 and on the inner circumferential surface of the branch part of the attachment pipe 3, the lining material 6 is inserted into the branch pipe 1 while being turned inside out using fluid pressure. As shown in FIG. 2, the lining material 6 is made by forming a flexible layer 8 made of rubber or synthetic resin on the outer surface of a fibrous reinforcing material 7 such as a cylindrical woven fabric or non-woven fabric 11. A reaction-curing adhesive is applied to the inner surface of the fiber F i
+i Impregnated with strong body 7.
而してこの内張り材６を、流体圧力で内外面を裏返しな
がら枝管１内に挿通する。内張り材６の先☆ｉ；を枝管
１の一端部のマンホール２内に１３いて環状に固定し、
該環状固定部分つの後部に圧力容器１０から流体圧力を
作用さぼる。これによりその環状固定部分９に形成され
る折返し部分１１において内張り材６は内側か外側とな
るように折返され、その折返し部分１１が枝管１に沿っ
てＷｉｔ記一端から（ｔ！！ 端にまで前進する。これ
により内張り材６は全長に亙って裏返されて枝管１の仝
艮に亙って挿通され、且つ、内面と外面とが裏返った内
張り材６は、前記流体圧力により枝管１内面に圧着され
る。This lining material 6 is then inserted into the branch pipe 1 while turning the inner and outer surfaces inside out using fluid pressure. The tip ☆i of the lining material 6 is placed inside the manhole 2 at one end of the branch pipe 1 and fixed in a ring shape.
Fluid pressure is applied from the pressure vessel 10 to the rear portion of the annular fixed portion. As a result, the lining material 6 is folded back to the inside or outside at the folded part 11 formed on the annular fixed part 9, and the folded part 11 is folded along the branch pipe 1 from one end to the end (t!! As a result, the lining material 6 is turned over over its entire length and inserted over the entire length of the branch pipe 1, and the lining material 6, whose inner and outer surfaces are turned inside out, is turned over by the fluid pressure. It is crimped onto the inner surface of the tube 1.
内張り材６を裏返を際の流体圧力は、枝管１の外部の地
下水や雨水等の水の圧力よりも高い圧力であることを要
する。枝管１の外部の水圧の大きさは、枝管１が埋設さ
れている位置の地面からの深さに応じて、１１について
０．１に９ｄとして篩用することができ、流体圧力はそ
れよりも若干高い圧力であれば足りる。The fluid pressure when turning the lining material 6 inside out needs to be higher than the pressure of water such as groundwater or rainwater outside the branch pipe 1. The magnitude of the water pressure outside the branch pipe 1 can be sieved as 0.1 to 9d for 11 depending on the depth from the ground where the branch pipe 1 is buried, and the fluid pressure is A pressure slightly higher than that is sufficient.
また前記流体圧力は、枝管１の両端に形成された弾性リ
ング５を圧縮するに足りる圧力であることが望ましい。Further, it is desirable that the fluid pressure is sufficient to compress the elastic rings 5 formed at both ends of the branch pipe 1.
弾性リング５を圧縮するに要する圧力の大きさは、その
ゴム状弾性体の材質によって一概に規定することはでき
ないが、弾性リング５の厚さの約５％程度が圧縮される
程度の圧力であれば充分である。Although the amount of pressure required to compress the elastic ring 5 cannot be unconditionally determined depending on the material of the rubber-like elastic body, the pressure required to compress approximately 5% of the thickness of the elastic ring 5 is sufficient. It is enough.
内張り４４６を裏返して枝管１に挿通すると、）妄着剤
を含浸した繊１質補強体７が外面に（装置して枝管１内
面に圧接され、その内側に気密層８が位置する。そして
内張り材６は流体圧力により枝管１内面に圧着されると
共に、枝管１の両端部においては枝管１と内張り材６と
の間に弾性リング５を挟圧し、流体圧力によって弾性リ
ング５を圧縮した状態となる。When the inner lining 446 is turned over and inserted into the branch pipe 1, the fibrous reinforcing body 7 impregnated with a detoxifying agent is brought into pressure contact with the inner surface of the branch pipe 1 on the outer surface, and the airtight layer 8 is located inside it. The lining material 6 is pressed against the inner surface of the branch pipe 1 by fluid pressure, and the elastic ring 5 is pinched between the branch pipe 1 and the lining material 6 at both ends of the branch pipe 1, and the elastic ring 5 is pressed by the fluid pressure. is in a compressed state.
この状態において内張り材６内の流体圧力を維持しつつ
放置し、または内張り材６内に加温流体を通して加温し
、繊維質補強体７に含浸した接着剤を反応硬化せしめる
。これによって内張り材６は枝管１の内面に接着される
と共に、繊維質補強体７に含浸した接着剤が硬化するこ
とによって内張り材６は剛直な管を構成する。In this state, the lining material 6 is left to stand while maintaining the fluid pressure, or a heating fluid is passed through the lining material 6 to heat it, thereby causing the adhesive impregnated in the fibrous reinforcing body 7 to react and harden. As a result, the lining material 6 is adhered to the inner surface of the branch pipe 1, and as the adhesive impregnated into the fibrous reinforcing body 7 hardens, the lining material 6 forms a rigid pipe.
接着剤の硬化が完了したならば、枝管１の端末における
マンホール２への開口部において内張り材６を切断する
。また枝管１に取付管３が接続されているような場合に
は、適宜の手段によりその接続部の内張り材６を穿孔し
、取付管３を枝管１に通じさせる。Once the adhesive has completely hardened, the lining material 6 is cut at the opening to the manhole 2 at the end of the branch pipe 1. In addition, when the attachment pipe 3 is connected to the branch pipe 1, the lining material 6 of the connecting portion is perforated by appropriate means to allow the attachment pipe 3 to communicate with the branch pipe 1.
なお弾性リング５を枝管１の内周面に形成するに当って
、単に弾性リング５を枝管１の内周面に取付け、その内
側に内張り材６を貼り付けても良いのであるが、弾性リ
ング５の内側に金属製の拡圧リングを嵌合し、これを拡
圧して弾性リング５を拡圧リングと枝管１の内面との間
に挟圧して圧縮し、該拡圧リングの内側に内張り材６を
貼り付けることもできる。Note that when forming the elastic ring 5 on the inner peripheral surface of the branch pipe 1, it is also possible to simply attach the elastic ring 5 to the inner peripheral surface of the branch pipe 1 and paste the lining material 6 on the inside thereof. A metal pressure expansion ring is fitted inside the elastic ring 5, and the pressure is expanded to compress the elastic ring 5 by compressing it between the pressure ring and the inner surface of the branch pipe 1. A lining material 6 can also be pasted on the inside.
作用
本発明の方法においては、内張り材６を流体圧力により
裏返しながら枝管１内に挿通するので、枝管１内に流入
して溜っていた水は内張り材６の折返し部分によって前
方へ押し流され、枝管１と内張り材６との間に水が封入
されることはなく、内張り材６は枝管１内面に直接に圧
着される。また裏返った内張り材６内には枝管１の外部
の水圧よりも高い流体圧力が作用しているので、枝管１
の継手部分やひびυ］れ部分においては内張り材６がそ
れらを塞ぎ、内張り材６を圧着した状態°にＪ３いて外
部の水が枝管１の内側に浸入するのを阻止する。Function: In the method of the present invention, the lining material 6 is inserted into the branch pipe 1 while being turned over by fluid pressure, so that water that has flowed into the branch pipe 1 and accumulated therein is swept forward by the folded portion of the lining material 6. Water is not sealed between the branch pipe 1 and the lining material 6, and the lining material 6 is directly crimped onto the inner surface of the branch pipe 1. Also, since fluid pressure higher than the water pressure outside the branch pipe 1 is acting inside the lining material 6 which has been turned over, the branch pipe 1
The lining material 6 closes the joints and cracks in the branch pipe 1, and the lining material 6 is in a crimped state to prevent external water from entering the inside of the branch pipe 1.
そして裏返った内張り材６の内側に流体圧力を作用させ
ながら接着剤を硬化させるので、その間にも枝管１の内
側に外部の水が侵入することはない。むしろ内張り材６
内の流体圧力が外部の水圧よりも高いので、内張り材６
の繊維質補強体７に含浸された接着剤が継手の緩んだ部
分やひび割れのＦｉ！間に侵入してここで硬化し、これ
らを塞ぐ作用をする。Since the adhesive is cured while applying fluid pressure to the inside of the turned-over lining material 6, external water does not enter the inside of the branch pipe 1 during this time. Rather, lining material 6
Since the fluid pressure inside is higher than the water pressure outside, the lining material 6
The adhesive impregnated into the fibrous reinforcement 7 can be applied to loose joints and cracks. It penetrates between the gaps and hardens there, acting to close them.
しかしながら、このようにして内張り材６を枝管１の内
面に接着した状態においても、外部から枝管１と内張り
材６との間への水の侵入を完全に阻止することは困難で
ある。すなわち内張り材６を挿通する際には枝管１の内
面は濡れているので、内張り材６が枝管１に対して強固
に固着することはなり、繊維質補強体７に含浸された接
？１剤により内張り材６は剛直な管を構成し、その管が
枝管１の内側に嵌合された状態となり、枝管１と内張り
材６との間の接着の弱い部分に若干の間隙が生じる。However, even with the lining material 6 adhered to the inner surface of the branch pipe 1 in this manner, it is difficult to completely prevent water from entering between the branch pipe 1 and the lining material 6 from the outside. That is, since the inner surface of the branch pipe 1 is wet when the lining material 6 is inserted, the lining material 6 does not firmly adhere to the branch pipe 1, and the contact material impregnated in the fibrous reinforcing body 7 does not adhere to the branch pipe 1 firmly. With the first agent, the lining material 6 forms a rigid tube, which is fitted inside the branch pipe 1, leaving a slight gap in the weakly bonded area between the branch pipe 1 and the lining material 6. arise.
また継手の緩みやひびυ１れに侵入した接着剤も、これ
らの隙間を完全に埋めるには￥らず、若干の水が枝管１
と内張り材６との間の間隙に侵入することは避けられな
い。また内張り後に新たに生じたひび割れ等からは、水
の浸入を阻止することはできない。In addition, adhesive that has penetrated into loose joints or cracks may not be able to completely fill these gaps, and some water may leak into branch pipes.
Intrusion into the gap between the material and the lining material 6 is unavoidable. Furthermore, it is not possible to prevent water from entering through cracks that newly occur after lining.
従って、枝管１外の地下水や雨水等の水が枝管１と内張
り材６との間に浸入することは避けられず、その水は枝
管１と内張り材６との間の接着の弱い部分を通って拡散
する。Therefore, it is inevitable that water such as groundwater or rainwater outside the branch pipe 1 will infiltrate between the branch pipe 1 and the lining material 6, and that water will be absorbed by the weak adhesion between the branch pipe 1 and the lining material 6. Diffuse through the parts.
ここで本発明においては、内張り材６と枝管１との間に
弾性リング５を挟圧すると共に、該弾性リング５を圧縮
しているので、内張り終了後において内張り材６が枝管
１内面から剥がれても、圧縮されていた弾性リング５が
回（（シてその間隙を埋める。従って内張り材６の端末
及び取付管３の分岐部においては、枝管１と内張り材６
との間は完全にシールされた状態となり、枝管１の途中
から枝管１と内張り材６との間に流入した水は枝管１の
良さの範囲に亙って拡散はするが、その端末及び分岐部
において弾性リング５により遮断され、マ、ンボール２
内に流入することはなく、汚水に混入することはないの
である。Here, in the present invention, the elastic ring 5 is pinched between the lining material 6 and the branch pipe 1, and the elastic ring 5 is compressed. Even if the elastic ring 5 is peeled off, the compressed elastic ring 5 rotates and fills the gap.
There is a complete seal between the branch pipe 1 and the lining material 6, and the water that flows into the space between the branch pipe 1 and the lining material 6 from the middle of the branch pipe 1 is diffused over the range of the branch pipe 1. It is blocked by an elastic ring 5 at the terminal and branch part, and the man ball 2
They do not flow into the water and do not mix with sewage.
また弾性リング５を拡圧リングで枝管１の内面に挟圧す
る場合においては、内張り材６と拡圧リングとの接着部
分に対しては弾性リング５のシール効果は及ばないが、
金属と内張り材６とは充分に接着して容易に剥がれるこ
とはないので、ここから水が漏れることはない。In addition, when the elastic ring 5 is pressed against the inner surface of the branch pipe 1 by a pressure expansion ring, the sealing effect of the elastic ring 5 does not extend to the bonded area between the lining material 6 and the pressure expansion ring.
Since the metal and the lining material 6 are sufficiently adhered to each other and will not easily peel off, water will not leak therefrom.
また前述のように、弾性リング５を構成するゴム状弾性
体に水を吸収してｖ、潤する吸水剤を含有せしめること
により、拡散した水が弾性リング５に触れると弾性リン
グ５が水を吸収して膨潤して体積を増し、枝管１と内張
り材６との間隙を確実に埋めるので、水の汚水への混入
をより確実に阻止することができる。Furthermore, as described above, by incorporating a water-absorbing agent that absorbs and moistens water into the rubber-like elastic body constituting the elastic ring 5, when the diffused water touches the elastic ring 5, the elastic ring 5 absorbs the water. It absorbs and swells to increase its volume and reliably fills the gap between the branch pipe 1 and the lining material 6, making it possible to more reliably prevent water from entering the sewage.
発明の効果
本発明によれば、枝管１外の地下水や雨水等の水圧より
も高い流体圧力で内張り材６を裏返して枝管１に挿通ず
るので、枝管１の継手の緩みやひび割れの部分から水が
流入しているような管路においても、その流入する水を
断切りながら内張り材６の衷返しを進行させることがで
きる・またその流体圧力を維持しつつ接着剤を硬化させ
るので、枝管１の継手の緩みやひひス１Ｊれの隙間に接
着剤を押込み、それらの隙間を狸めて水の浸入を大幅に
減少させることができる。Effects of the Invention According to the present invention, since the lining material 6 is turned over and inserted into the branch pipe 1 with a fluid pressure higher than the water pressure of ground water, rainwater, etc. outside the branch pipe 1, loosening or cracking of the joint of the branch pipe 1 is prevented. Even in a pipe where water is flowing in from a section, the lining material 6 can be turned over while cutting off the water flowing in. Also, the adhesive can be cured while maintaining the fluid pressure. It is possible to significantly reduce the infiltration of water by pushing the adhesive into the gaps in the joints of the branch pipes 1 that are loose or in the cracks, and by tightening those gaps.
また本発明により内張すされた下水道管においては、内
張り材６のｍ雑費補強体７が接着剤で固められており、
内張り材６が剛直な管を構成しているので、内張り材６
と枝管１とが強固に接着されていなくても、内張り材６
自体が充分に外圧に耐えることができ、枝管１から侵入
してくる水の外水圧ににつて内張り材６が押し潰される
ようなことがない。In addition, in the sewer pipe lined according to the present invention, the m miscellaneous reinforcing body 7 of the lining material 6 is hardened with adhesive,
Since the lining material 6 constitutes a rigid pipe, the lining material 6
Even if the lining material 6 and the branch pipe 1 are not firmly bonded, the lining material 6
The lining material 6 can sufficiently withstand external pressure, and the lining material 6 will not be crushed by the external water pressure of water entering from the branch pipe 1.
さらに枝管１と内張り材６との間に侵入した地下水−雨
水等は枝管１と内張り材６との間隙を伝って拡散するが
、その水は枝管１及び内張り材６の端末において弾性リ
ング５で遮断され、これらの水がマンホール２に流入し
て汚水に混入し、汚水の聞を増大せしめることがない。Furthermore, groundwater, rainwater, etc. that have entered between the branch pipe 1 and the lining material 6 spread through the gap between the branch pipe 1 and the lining material 6, but the water is elastic at the ends of the branch pipe 1 and the lining material 6. This water is blocked by the ring 5 and does not flow into the manhole 2 and mix with the sewage, thereby preventing the amount of sewage from increasing.
従って本来の汚水として集められたちののみを処理場に
流し、その処理場においては真に処理をする必要のある
少量の汚水のみを処理すれば良いので、汚水処理に要す
る設備は小規模なものとなり、経費もＯｉ５減すること
ができる。Therefore, only the collected sewage is sent to the treatment plant, and only the small amount of sewage that really needs to be treated needs to be treated at the treatment plant, so the equipment required for sewage treatment is small. Therefore, expenses can be reduced by Oi5.
第１図は本発明により内張すされた下水道管の枝管を示
す中央縦断面図である。第２図は本発明におい使用する
内張り材の一部を破断して示した斜視図である。
１・・・・・・枝管 ５・・・・・・弾性リ
ング６・・・・・・内張り材 ７・・・・・・繊
維゛バ補強体８・・・・・・気密層
出 願 人 芦森工業株式会社 ２．。
・、毫毀＼゛FIG. 1 is a central longitudinal sectional view showing a branch pipe of a sewer pipe lined according to the present invention. FIG. 2 is a partially cutaway perspective view of the lining material used in the present invention. 1... Branch pipe 5... Elastic ring 6... Lining material 7... Fiber reinforcement body 8... Airtight layer Application People Ashimori Industries Co., Ltd. 2. .・、Damage＼゛
Claims (1)
分岐部の下水道管（１）の内周面に、ゴム状弾性体より
なる弾性リング（５）を形成し、筒状の織布又は不織布
等の繊維質補強体（７）の外面にゴム又は合成樹脂より
なる柔軟な気密層（８）を形成してなる内張り材（６）
の内面に、反応硬化型接着剤を塗布して該接着剤を前記
繊維質補強体（７）に含浸せしめ、その内張り材（６）
を下水道管（１）の外部の水圧よりも高い流体圧力で内
外面を裏返しながら前記下水道管（１）に挿通し、前記
流体圧力を維持して裏返つた内張り材（６）を下水道管
（１）の内面に圧着しつつ前記接着剤を硬化せしめるこ
とを特徴とする、下水道管の内張り方法 ２ 前記弾性リング（５）が、天然ゴム、ポリウレタン
、軟質ポリ塩化ビニール等の易圧縮性材料よりなる成型
物であつて、これを下水道管（１）の両端の内周面及び
分岐管（３）の分岐部の下水道管（１）の内周面に嵌合
又は当接せしめることを特徴とする、特許請求の範囲第
１項記載の下水道管の内張り方法 ３ 前記弾性リング（５）が、下水道管（１）の両端の
内周面及び分岐管（３）の分岐部の下水道管（１）の内
周面に、ポリウレタン等の二液反応硬化型弾性樹脂液を
塗布し、これを反応硬化せしめることにより形成したも
のであることを特徴とする、特許請求の範囲第１項記載
の下水道管の内張り方法 ４ 前記ゴム状弾性体が、不織布又はスポンジにエポキ
シ樹脂液を含浸せしめたちのであることを特徴とする、
特許請求の範囲第１項記載の下水道管の内張り方法 ５ 前記ゴム状弾性体が、水を吸収して膨潤する吸水剤
を含有することを特徴とする、特許請求の範囲第１項、
第２項、第３項又は第４項記載の下水道管の内張り方法 ６ 前記吸水剤が、ポリアクリル酸ソーダ若しくはポリ
ビニルアルコール又はそれらの共重合体であることを特
徴とする、特許請求の範囲第５項記載の下水道管の内張
り方法 ７ 前記弾性リング（５）を下水道管（１）の内周面に
形成した後、該弾性リング（５）の内側に金属製拡圧リ
ングを嵌合し、これを拡圧して弾性リング（５）を下水
道管（１）の内面に圧接したことを特徴とする、特許請
求の範囲第１項記載の下水道管の内張り方法[Claims] 1. Elastic rings (5) made of a rubber-like elastic body are provided on the inner peripheral surface of both ends of the sewer pipe (1) and on the inner peripheral surface of the sewer pipe (1) at the branch part of the branch pipe (3). A lining material (6) formed by forming a flexible airtight layer (8) made of rubber or synthetic resin on the outer surface of a cylindrical fibrous reinforcing material (7) such as woven or nonwoven fabric.
A reaction-curing adhesive is applied to the inner surface of the fibrous reinforcement (7) to impregnate the adhesive, and the lining material (6) is coated with the adhesive.
is inserted into the sewer pipe (1) while turning the inner and outer surfaces inside out at a fluid pressure higher than the water pressure outside the sewer pipe (1), and while maintaining the fluid pressure, the inside-out lining material (6) is inserted into the sewer pipe (1). ) A sewer pipe lining method 2, characterized in that the adhesive is cured while being pressed onto the inner surface of the pipe.The elastic ring (5) is made of an easily compressible material such as natural rubber, polyurethane, or soft polyvinyl chloride. A molded product, which is characterized by being fitted into or in contact with the inner peripheral surface of both ends of the sewer pipe (1) and the inner peripheral surface of the sewer pipe (1) at the branch part of the branch pipe (3). , Method 3 for lining a sewer pipe according to claim 1 The elastic ring (5) is attached to the inner circumferential surface of both ends of the sewer pipe (1) and the sewer pipe (1) at the branch part of the branch pipe (3). The sewer pipe according to claim 1, which is formed by applying a two-component reaction-curing elastic resin liquid such as polyurethane to the inner circumferential surface of the pipe and reaction-curing the same. Lining method 4, characterized in that the rubber-like elastic body is made of a nonwoven fabric or sponge impregnated with an epoxy resin liquid.
A sewer pipe lining method 5 according to claim 1, wherein the rubber-like elastic body contains a water-absorbing agent that absorbs water and swells.
A method for lining a sewer pipe according to claim 2, claim 3, or claim 4, wherein the water absorbing agent is sodium polyacrylate, polyvinyl alcohol, or a copolymer thereof. Method 7 for lining a sewer pipe according to Item 5: After forming the elastic ring (5) on the inner peripheral surface of the sewer pipe (1), fitting a metal expansion ring inside the elastic ring (5), A method for lining a sewer pipe according to claim 1, characterized in that the elastic ring (5) is pressed against the inner surface of the sewer pipe (1) by expanding the pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12498386A JPS62279923A (en) | 1986-05-29 | 1986-05-29 | Method of lining drainpipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12498386A JPS62279923A (en) | 1986-05-29 | 1986-05-29 | Method of lining drainpipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62279923A true JPS62279923A (en) | 1987-12-04 |
| JPH0519895B2 JPH0519895B2 (en) | 1993-03-18 |
Family
ID=14899022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12498386A Granted JPS62279923A (en) | 1986-05-29 | 1986-05-29 | Method of lining drainpipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62279923A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63194929A (en) * | 1987-02-09 | 1988-08-12 | Osaka Bosui Constr Co Ltd | Leak-prevention process of buried sewer pipe |
| JPH01221223A (en) * | 1988-02-29 | 1989-09-04 | Ashimori Ind Co Ltd | Lining material for pipe line and its manufacture |
| JPH01263029A (en) * | 1988-04-15 | 1989-10-19 | Osaka Bosui Constr Co Ltd | Rigid tube lining method for inner face of conduit with branch |
| JPH02239920A (en) * | 1989-03-14 | 1990-09-21 | Japan Steel & Tube Constr Co Ltd | Water stop technique and hose utilized for its technique and hose supporting ring |
| KR100433060B1 (en) * | 2001-05-03 | 2004-05-28 | 엘지건설 주식회사 | An Appartus and Methode for Repairing pipelines Without digging |
-
1986
- 1986-05-29 JP JP12498386A patent/JPS62279923A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63194929A (en) * | 1987-02-09 | 1988-08-12 | Osaka Bosui Constr Co Ltd | Leak-prevention process of buried sewer pipe |
| JPH01221223A (en) * | 1988-02-29 | 1989-09-04 | Ashimori Ind Co Ltd | Lining material for pipe line and its manufacture |
| JPH01263029A (en) * | 1988-04-15 | 1989-10-19 | Osaka Bosui Constr Co Ltd | Rigid tube lining method for inner face of conduit with branch |
| JPH02239920A (en) * | 1989-03-14 | 1990-09-21 | Japan Steel & Tube Constr Co Ltd | Water stop technique and hose utilized for its technique and hose supporting ring |
| JPH0818368B2 (en) * | 1989-03-14 | 1996-02-28 | 日本鋼管工事株式会社 | Water stop method and hoses used in the method and hose support ring |
| KR100433060B1 (en) * | 2001-05-03 | 2004-05-28 | 엘지건설 주식회사 | An Appartus and Methode for Repairing pipelines Without digging |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0519895B2 (en) | 1993-03-18 |
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