JP3436604B2 - How to rehabilitate an existing sewer and rebuild the sewer - Google Patents

How to rehabilitate an existing sewer and rebuild the sewer

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Publication number
JP3436604B2
JP3436604B2 JP03740395A JP3740395A JP3436604B2 JP 3436604 B2 JP3436604 B2 JP 3436604B2 JP 03740395 A JP03740395 A JP 03740395A JP 3740395 A JP3740395 A JP 3740395A JP 3436604 B2 JP3436604 B2 JP 3436604B2
Authority
JP
Japan
Prior art keywords
pipe
existing
plate
shaped
metal plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP03740395A
Other languages
Japanese (ja)
Other versions
JPH08232333A (en
Inventor
伸吉 大岡
榮 佐野
Original Assignee
東亜グラウト工業株式会社
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Publication date
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Priority to JP03740395A priority Critical patent/JP3436604B2/en
Publication of JPH08232333A publication Critical patent/JPH08232333A/en
Application granted granted Critical
Publication of JP3436604B2 publication Critical patent/JP3436604B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

【発明の詳細な説明】Detailed Description of the Invention
【0001】[0001]
【産業上の利用分野】本発明は、既に設置された下水管
等の既設管渠を更生する既設管渠を管更生し、管渠を再
構築する方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of rehabilitating an existing sewer pipe, such as a sewer pipe, which has already been installed, to reconstruct the sewer pipe.
【0002】[0002]
【従来の技術】一般に、地中に埋設された下水管等の管
渠はヒューム管、陶管等が広く使用されている。これら
管渠は長期間の使用により内壁面が硫化水素やその他の
腐食ガス及び付着物等によって、侵食され、かつ劣化
し、管厚が薄くなって強度が低下している。また地圧や
地盤沈下等により管渠間の継目部がずれて隙間ができた
り、上載荷重等によって管渠の一部にクラックが発生
し、この部分より地下水等が管渠内に浸入、或いは管渠
内を流れる流水等が地中に漏水することがある。これら
地下水等の管渠内への浸入や漏水に伴い管渠周辺の土砂
が流出して管渠背面に空洞部が生じて路面陥没等を誘発
するおそれがある。
2. Description of the Related Art Generally, a fume pipe, a ceramic pipe, etc. are widely used as a sewer pipe such as a sewer pipe buried in the ground. The inner wall surfaces of these pipes are corroded and deteriorated by hydrogen sulfide and other corrosive gases and adhered substances after long-term use, and the pipe thickness is reduced and the strength is lowered. Also, due to ground pressure or ground subsidence, seams between pipes may be displaced to create gaps, or cracks may occur in part of the pipes due to overloading, and groundwater may enter the pipes from this part, or Flowing water flowing in the pipe may leak into the ground. Due to the infiltration and leakage of groundwater and the like into the pipe, the sediment around the pipe may flow out to form a cavity at the back of the pipe and induce a road surface depression.
【0003】この対策として例えば管更生して再構築す
べき地中に埋設された下水管等の既設管渠内を管内洗浄
車等により洗浄し、この既設管渠内に光硬化性樹脂、熱
硬化性樹脂或いは熱可塑性樹脂を含む未硬化状態の可撓
性ホースを圧搾空気によって反転させながら導入したり
或いは引き込みにより導入し、かつ圧搾空気により管渠
内壁面に沿わせて押圧せしめ、その後、可撓性ホースを
紫外線照射装置で照射して可撓性ホースを硬化せしめて
管渠内壁面に不透水性のライニングを形成する既設管渠
の更生方法が既に開発されている。
As a measure against this, for example, the inside of an existing drainage pipe such as a sewer pipe buried in the ground to be rehabilitated and rebuilt is washed with a pipe washing car or the like, and the photocurable resin and heat are put into the existing drainage pipe. A flexible hose in an uncured state containing a curable resin or a thermoplastic resin is introduced while being inverted by compressed air or introduced by drawing in, and is pressed along the inner wall surface of the conduit by compressed air, and then, A method of rehabilitating an existing pipe for irradiating a flexible hose with an ultraviolet irradiation device to cure the flexible hose to form an impermeable lining on the inner wall surface of the pipe has already been developed.
【0004】また他の既設管渠の管更生方法としては、
下水管等の既設管渠内にこの管渠の内径より小径の更生
管を挿入、または現場製管により既設管渠内に更生管を
形成し、既設管渠と更生管との間にモルタル等の裏込め
材を注入して管更生する方法がある。
As another method of rehabilitating an existing conduit,
Insert a rehabilitation pipe with a diameter smaller than the inner diameter of this sewer into the existing sewer pipe, or form a rehabilitating pipe in the existing sewer pipe by on-site production, and mortar etc. between the existing sewer pipe and the rehabilitate pipe. There is a method to rehabilitate the pipe by injecting the backfill material of.
【0005】この方法を図16及び図17に従って具体
的に説明すると、図中符号101は管更生を必要とする
ヒューム管、陶管等で形成されている既設管渠であっ
て、管更生を行う場合、先ず管内洗浄車等により管渠1
01の内壁面101aを洗浄し管渠101の内壁面に発
生した劣化部分を切削除去することなく、ただ単に洗浄
するだけで図16に示すように一方のマンホール102
内に更生管用製管機103を設置し、この製管機103
により地上に設けられたドラム103aから供給される
例えば塩化ビニル樹脂製帯状材104を螺旋状に巻き、
その両側縁を互にシール材を介して順次嵌合して円筒状
の更生管105を製造し、管渠101内に更生管105
を順次挿入敷設する。両マンホール102、102間に
位置する管渠101全長に亙って更生管105を敷設し
た後、製管機103をマンホール102内から搬出し、
マンホール102に開口する管渠101の管口端と更生
管105の管口端をシールする。
This method will be described in detail with reference to FIGS. 16 and 17. In the figure, reference numeral 101 is an existing pipe culvert formed of a fume pipe, a ceramic pipe or the like which requires pipe rehabilitation. When carrying out, first use a pipe cleaning car, etc.
The inner wall surface 101a of No. 01 is not cleaned and the deteriorated portion generated on the inner wall surface of the pipe 101 is not simply removed by cutting, but as shown in FIG.
The pipe making machine 103 for rehabilitation pipe is installed in the pipe making machine 103
For example, a vinyl chloride resin band material 104 supplied from a drum 103a provided on the ground is spirally wound,
Cylindrical rehabilitation pipe 105 is manufactured by sequentially fitting both side edges of the rehabilitation pipe 105 through a sealing material, and
Are sequentially inserted and laid. After laying the rehabilitating pipe 105 over the entire length of the pipe 101 located between the two manholes 102, 102, the pipe making machine 103 is carried out from the manhole 102,
The pipe mouth end of the pipe 101 opening to the manhole 102 and the pipe mouth end of the rehabilitation pipe 105 are sealed.
【0006】続いて、図17に断面を示すように、例え
ば更生管105を内側から水平方向に支持する横方向支
保材106a及び上下方向に支持する縦方向支保材10
6bから構成される支保材106を管渠101内に例え
ば約1m間隙で組立、仮設して管渠101内に配設され
る更生管105が既設管渠101と更生管105との間
に注入される裏込め材の作用によって浮上、蛇行及び断
面形状が変形するのを防止し、この状態で更生管105
に削孔機で裏込材注入孔(図示せず)を穿孔して、この
孔に裏込め材注入用治具を取り付けて裏込材107を注
入し、裏込め材107が硬化した後、支保材106を撤
去することにより管渠101の更生作業を完了する。
Subsequently, as shown in a cross section in FIG. 17, for example, a lateral support member 106a for horizontally supporting the rehabilitation pipe 105 from the inside and a vertical support member 10 for vertically supporting the rehabilitation pipe 105.
The support material 106 composed of 6b is assembled in the pipe 101 with a gap of, for example, about 1 m, and the rehabilitation pipe 105 temporarily installed and injected into the pipe 101 is injected between the existing pipe 101 and the rehabilitation pipe 105. It prevents the floating, meandering, and cross-sectional shape from being deformed by the action of the backfill material that is applied, and in this state, the rehabilitation pipe 105
After making a backfill material injection hole (not shown) with a hole making machine, attaching a backfill material injection jig to this hole and injecting the backfill material 107, after hardening the backfill material 107, By removing the support material 106, the rehabilitation work of the pipe 101 is completed.
【0007】[0007]
【発明が解決しようとする課題】上記可撓性ホースを紫
外線照射装置で照射して硬化せしめて管渠内壁面に不透
水性のライニングを形成する前者の既設管渠の管更生方
法にあっては、既設管渠の内壁面を洗浄した後、既設管
渠の劣化部分を切削除去することなく可撓性ホースを既
設管渠内に反転或いは引き込みし、可撓性ホースを硬化
せしめて内壁面にライニングを形成することから見掛上
の補修はできる。しかし、単に既設管渠の内壁面を洗浄
するのみであることから、既設管渠内壁面に発生した劣
化部分、例えばヒューム管にあっては硫化水素によって
炭酸カルシウム化された劣化部分が残存し、この残存し
た劣化部分から既設管渠内壁面の劣化が再び進行して強
度の低下を招き、長期間に亙っての管更生効果を確保す
ることが困難である。また既設管渠内壁面の劣化部分を
完全に除去すると、劣化部分の除去により既設管渠の壁
厚が薄くなり強度が著しく低下する等の不具合が発生す
る。
In the former method of rehabilitating an existing conduit, the flexible hose is irradiated with an ultraviolet irradiator and cured to form an impermeable lining on the inner wall surface of the conduit. After cleaning the inner wall surface of the existing pipe, invert or pull the flexible hose into the existing pipe without cutting and removing the deteriorated part of the existing pipe, and then cure the flexible hose to cure the inner wall surface. Apparent repair is possible because the lining is formed on the. However, since it is only to clean the inner wall surface of the existing pipe, the deteriorated portion generated on the inner wall surface of the existing pipe, for example, in the fume pipe, the deteriorated portion that has been calcium carbonate by hydrogen sulfide remains. From the remaining deteriorated portion, the deterioration of the inner wall surface of the existing pipe further progresses and the strength is lowered, and it is difficult to secure the pipe rehabilitation effect for a long period of time. In addition, if the deteriorated portion of the inner wall of the existing pipe is completely removed, the wall thickness of the existing pipe becomes thin due to the removal of the deteriorated portion, which causes a problem such as a significant decrease in strength.
【0008】一方後者、既設管渠内にこの管渠の内径よ
り小径の更生管を現場製管または既製の更生管等を挿入
して既設管渠と更生管との間にモルタル等の裏込め材を
注入する管更生方法にあっては既設管渠内に小径の更生
管を現場製管または既製の更生管を挿入することから管
渠内の有効断面積が小となり管渠内における流下性能の
低下を招き、更に既設管渠と更生管との間に注入される
裏込め材の硬化に長時間要することから施工期間の長期
化を招き、かつ既設管渠内壁面と裏込め材、裏込め材と
更生管との各境界面の接着、特に裏込め材の硬化に伴う
収縮によって境界面における接着が十分に得られず裏込
め材が既設管渠及び更生管から剥離するおそれがあり長
期間に亙って管更生効果を確保することが困難である等
の不具合がある。
On the other hand, in the latter case, a rehabilitation pipe having a diameter smaller than the inner diameter of this pipe is inserted in the site or a rehabilitating pipe which has already been manufactured is inserted to backfill mortar between the existing pipe and the rehabilitating pipe. In the pipe rehabilitation method of injecting material, a small-diameter rehabilitation pipe is inserted into the existing pipe, or an existing rehabilitation pipe is inserted, so the effective cross-sectional area in the pipe is small and the flow-down performance in the pipe is small. In addition, it takes a long time to cure the backfill material injected between the existing pipe and the rehabilitating pipe, which lengthens the construction period. Adhesion at the interface between the filling material and the rehabilitating pipe, especially due to shrinkage due to hardening of the backfilling material, may not be sufficiently obtained at the boundary surface, and the backfilling material may peel off from the existing drainage pipe and rehabilitation pipe. There are problems such as difficulty in securing the pipe rehabilitation effect over the period.
【0009】従って本発明の目的は、施工期間の長期化
を招くことなく、強度、耐久性、流下性能等の機能を新
設管渠と同等程度に回復し得る既設管渠を管更生し、管
渠を再構築する方法を提供することにある。
Therefore, an object of the present invention is to rehabilitate an existing drainage pipe capable of recovering functions such as strength, durability, and flow-down performance to the same degree as that of a new drainage pipe without prolonging the construction period. It is to provide a method for rebuilding a culvert.
【0010】[0010]
【課題を解決するための手段】 上記目的を達成する本
発明方法は 設管渠の内壁面に生じた劣化部分を、隣
り合うマンホール間のように長い範囲に亘って自動切削
機で完全に切削除去し、劣化部分を除去した既設管渠の
内壁面上に金属製板状材を圧接固定させて内壁面を被覆
し、次いで、前記金属製板状材の内周面に硬化性樹脂に
よる被覆層を、切削除去によって減少した壁厚分に相応
する厚さ乃至その厚さより小なる厚さの保護層が金属製
板状材と前記被覆層によって一体形成されるように、且
つ金属製板状材と樹脂層とより成る保護層によって既設
管渠に新設管渠と同等程度の強度、耐久性及び流下性能
がもたらされるように被覆することを特徴とするもので
ある。
The present invention method to achieve the above object, resolving means for the above-mentioned object, fully automatic cutting machine degraded portion occurring on the inner wall surface of the already設管culvert, over a long range as between adjacent manholes Then, the metal plate-shaped material is pressed and fixed on the inner wall surface of the existing pipe with the deteriorated portion removed by cutting to cover the inner wall surface, and then the curable resin is applied to the inner peripheral surface of the metal plate-shaped material. The coating layer according to the invention is formed such that a protective layer having a thickness corresponding to the wall thickness reduced by cutting or a thickness smaller than that is integrally formed by the metal plate member and the coating layer. The present invention is characterized in that an existing pipe is covered with a protective layer composed of a plate-shaped material and a resin layer so as to provide strength, durability and flow-down performance equivalent to those of the new pipe.
【0011】[0011]
【実施例】以下、本発明における既設管渠を管更生し、
管渠を再構築する方法の一実施例を図1乃至図8によっ
て説明する。
[Examples] The following is a rehabilitation of an existing pipe in the present invention,
An embodiment of a method for reconstructing a conduit will be described with reference to FIGS. 1 to 8.
【0012】図中符号1、2はマンホール、符号3はヒ
ューム管、陶管等で管更生し、再構築すべき地中に埋設
された既設管渠であり、符号4は隣接する管渠からの流
水等の流入を防止する止水栓である。
In the figure, reference numerals 1 and 2 are manholes, reference numeral 3 is an existing pipe ditch which is buried in the ground to be reconstructed by fume pipe, ceramic pipe, etc., and reference numeral 4 is from an adjacent pipe ditch. It is a water stopcock that prevents the inflow of running water.
【0013】既設管渠3の内壁面3aは、長期間の使用
により硫化水素等に晒されて劣化して図2(a)に図1
のA−A線拡大断面図を示すように新設時の内壁面3
a′に比べ侵食されて壁厚が減少して強度が低下した
り、地圧や振動によりクラック3bが発生している場合
がある。
The inner wall surface 3a of the existing pipe 3 is deteriorated by being exposed to hydrogen sulfide or the like due to long-term use and is deteriorated as shown in FIG.
Inner wall surface 3 at the time of new installation as shown in the AA line enlarged sectional view of
In some cases, it is eroded as compared with a ', the wall thickness is reduced and the strength is reduced, and cracks 3b are generated due to ground pressure or vibration.
【0014】このような既設管渠3の管更生は先ず、管
渠3の内壁面3aに高圧水を吹き付ける管内洗浄車等に
より内壁面3aを洗浄する。
In the pipe rehabilitation of the existing pipe 3 as described above, first, the inner wall surface 3a is washed with a pipe cleaning vehicle or the like which blows high-pressure water onto the inner wall surface 3a of the pipe 3.
【0015】次に洗浄が完了した既設管渠3の内周面3
aの劣化部分3cを自動切削機によって切削除去する。
自動切削機は走行装置によって管渠3内を移動する自走
式或いは牽引ロープの牽引により管渠3内を移動する牽
引式がある。
Next, the inner peripheral surface 3 of the existing pipe 3 which has been cleaned
The deteriorated portion 3c of a is cut and removed by an automatic cutting machine.
The automatic cutting machine is of a self-propelled type in which the traveling device moves in the pipe 3 or a towed type in which the pulling rope moves the pipe in the pipe 3.
【0016】本実施例では自走式の自動切削機の一実施
例を図3及び図4によって説明する。自動切削機4は既
設管渠3の内部に同心状に位置決めして管軸方向に走行
するための走行ガイドユニット4aと、この走行ガイド
ユニット4aに対して同心状に旋回し得るように直列的
に連結されたカッタユニット4bとによって構成されて
いる。
In this embodiment, an embodiment of a self-propelled automatic cutting machine will be described with reference to FIGS. 3 and 4. The automatic cutting machine 4 has a running guide unit 4a for positioning in the existing pipe 3 concentrically and traveling in the pipe axis direction, and a series of so as to be concentrically rotatable with respect to the running guide unit 4a. And a cutter unit 4b connected to the.
【0017】走行ガイドユニット4aにはカッタユニッ
ト4bの旋回軸Aに対して放射状の等間隔で三方向に向
け、先端が互に連動して進退するガイドアーム4cを三
本一組として二組設けられていて、ガイドアーム4cの
各組ごとに、同じ二方向以上に向けられたガイドアーム
4cの先端部に、その転動方向をカッタユニット4bの
旋回軸Aに対して平行な方向と、直角な方向とに切り換
え得る走行輪4dと、これ以外のガイドアーム4cの先
端には転動方向を自在に変更可能なガイド輪4eが設け
られている。
The traveling guide unit 4a is provided with two sets of guide arms 4c, which are directed in three directions at equal radial intervals with respect to the turning axis A of the cutter unit 4b, and whose tips move forward and backward in association with each other as a set of three. For each set of the guide arms 4c, the rolling direction of the guide arm 4c at the tip end portion of the guide arm 4c directed in the same two or more directions is parallel to the turning axis A of the cutter unit 4b. A running wheel 4d that can be switched to any other direction and a guide wheel 4e that can freely change the rolling direction are provided at the tip of the guide arm 4c other than this.
【0018】またカッタユニット4bには旋回軸Aに対
して放射状に設けられ、その先端部を進退動するカッタ
アーム4fを設け、その先端部に劣化部分3cを切削す
るためのカッタ4gが装着されている。
Further, the cutter unit 4b is provided with a cutter arm 4f which is provided radially with respect to the swivel axis A and which advances and retracts the tip end portion thereof, and a cutter 4g for cutting the deteriorated portion 3c is attached to the tip end portion thereof. ing.
【0019】そして既設管渠3の劣化部分3cを切削除
去する際には、各ガイドアーム4c及び各カッタアーム
4fを予め引き込んだ状態で自動切削機4を管渠3内に
挿入配置し、次に各走行輪4dの転動方向をカッタユニ
ット4bの旋回軸Aに対して直角な向き、即ち内壁面3
aの周方向に切り換えて各走行輪4d及びガイド輪4e
を内壁面3aの周方向に移動可能な状態にして走行ガイ
ドユニット4aの各ガイドアーム4cを進出して外側に
張り出して先端に設けた走行輪4d及びガイド輪4eを
管渠3の内壁面3aに押圧してカッタユニット4bの旋
回軸Aを内壁面3aに同心状に位置決めし、走行輪4d
の向きをカッタユニット4bの旋回軸Aに対して平行な
向きに切り換えることによって走行ガイドユニット4a
自体が内壁面3aに対して旋回しないように固定する。
When the deteriorated portion 3c of the existing pipe 3 is to be removed by cutting, the automatic cutting machine 4 is inserted and arranged in the pipe 3 while the guide arms 4c and the cutter arms 4f are retracted in advance. In addition, the rolling direction of each traveling wheel 4d is perpendicular to the turning axis A of the cutter unit 4b, that is, the inner wall surface 3
The traveling wheels 4d and the guide wheels 4e are switched in the circumferential direction of a.
Is movable in the circumferential direction of the inner wall surface 3a, and each guide arm 4c of the travel guide unit 4a is advanced to project outward and the traveling wheel 4d and the guide wheel 4e provided at the tip are provided on the inner wall surface 3a of the pipe 3. By pressing to position the turning axis A of the cutter unit 4b concentrically with the inner wall surface 3a.
Of the traveling guide unit 4a by switching the direction of the direction to a direction parallel to the turning axis A of the cutter unit 4b.
It is fixed so as not to rotate with respect to the inner wall surface 3a.
【0020】走行ガイドユニット4aの位置決めが完了
した後、カッタユニット4bの各カッタアーム4fを進
出させて外側に張り出し、各カッタアーム4fの先端に
設けられたカッタ4gを既設管渠3の内壁面3aに押し
付けてカッタ4gにより劣化部分3cの切削除去を開始
する。
After the positioning of the traveling guide unit 4a is completed, each cutter arm 4f of the cutter unit 4b is advanced to project outward, and the cutter 4g provided at the tip of each cutter arm 4f is attached to the inner wall surface of the existing pipe 3. 3A is pressed and the cutter 4g starts cutting and removing the deteriorated portion 3c.
【0021】このときのカッタアーム4fの張り出し量
はカッタ4gが管渠3の劣化部分3cを切削して未劣化
部分に到達したと仮定される位置で停止し、次いでカッ
タユニット4bを旋回し、カッタ4gにより内壁面3a
を全周に亙って切削除去する。
At this time, the protruding amount of the cutter arm 4f is stopped at a position where it is assumed that the cutter 4g cuts the deteriorated portion 3c of the pipe 3 and reaches the non-deteriorated portion, and then the cutter unit 4b is swung, Inner wall surface 3a by cutter 4g
Is removed over the entire circumference.
【0022】以上のように、管渠3の管軸方向における
所定位置での切削作業が完了した後、各カッタアーム4
fを内側に引き込んで走行ガイドユニット4aの走行輪
4dを駆動することにより自動切削機4を管軸方向に走
行させ、カッタ4gが管渠3の未切削部分に対向する位
置で走行を停止し、カッタアーム4fを再び外側に張り
出して同様の切削作業を行い、これを繰り返して管渠3
の劣化部分3cを切削除去する。
As described above, after the cutting work at the predetermined position in the pipe axis direction of the pipe 3 is completed, each cutter arm 4 is
By pulling f inward and driving the traveling wheels 4d of the traveling guide unit 4a, the automatic cutting machine 4 is caused to travel in the pipe axis direction, and the traveling is stopped at a position where the cutter 4g faces the uncut portion of the pipe 3 , The cutter arm 4f is again projected to the outside and the same cutting operation is performed, and this is repeated to repeat the pipe 3
The deteriorated portion 3c is removed by cutting.
【0023】劣化部分3cが完全に切削除去されて壁厚
が小となった管渠3の内壁面3aを保護層5によって被
覆する。保護層5は、長期間の使用による侵食及び劣化
部分3cの切削除去によって減少した壁厚分に相応する
厚さL1 乃至その厚さより小なる厚さを有し、この保護
層5をによって更生管渠6に、新設管渠と同等程度或い
は同等程度以上の強度及び耐久性の等の機能がもたらさ
れる。
The protective wall 5 covers the inner wall surface 3a of the pipe 3 in which the deteriorated portion 3c is completely removed by cutting and the wall thickness is reduced. The protective layer 5 has a thickness L 1 corresponding to the wall thickness reduced by erosion due to long-term use and cutting and removal of the deteriorated portion 3c or a thickness smaller than the thickness L 1 , and the protective layer 5 is regenerated by the protective layer 5. The pipe 6 is provided with functions such as strength and durability which are equivalent to or higher than those of the newly installed pipe.
【0024】保護層5は、例えばガラス繊維、ポリエス
テル繊維等を含有する常温硬化性樹脂、例えば不飽和ポ
リエステル樹脂、エポキシ樹脂を吹付塗布して形成した
樹脂層を硬化せしめて形成する言わば強化プラスチック
(FRP)により容易に構成することができる。またガ
ラス繊維、ポリエステル繊維からなる不織布或いは織布
等のベース材に不飽和ポリエステル樹脂等の常温硬化性
樹脂を含浸させた樹脂層を張設させて硬化せしめること
により保護層5を形成することも可能でありまた既設管
渠3の内壁面3aにベース材を張設した後、未硬化状態
の常温硬化性樹脂を塗布等により含浸させて樹脂層を形
成し、硬化せしめることにより保護層5を形成すること
も可能である。更に、常温硬化性樹脂に代えて光硬化性
樹脂、熱硬化性樹脂或いは熱可塑性樹脂を用いることも
可能であり、この場合、紫外線照射装置等による照射に
より硬化せしめる。
The protective layer 5 is formed by curing a resin layer formed by spray-coating a room temperature curable resin containing glass fiber, polyester fiber or the like, for example, unsaturated polyester resin or epoxy resin, so to speak, a reinforced plastic ( It can be easily configured by FRP). Alternatively, the protective layer 5 may be formed by stretching and hardening a resin layer obtained by impregnating a base material such as a non-woven fabric or a woven fabric made of glass fiber or polyester fiber with a room temperature curable resin such as unsaturated polyester resin. It is possible, and after the base material is stretched over the inner wall surface 3a of the existing pipe 3, the room temperature curable resin in the uncured state is impregnated by coating or the like to form a resin layer, and the protective layer 5 is cured. It is also possible to form. Further, it is possible to use a photocurable resin, a thermosetting resin or a thermoplastic resin in place of the room temperature curable resin, and in this case, it is cured by irradiation with an ultraviolet irradiation device or the like.
【0025】保護層5の他の形成工法について説明する
と、図5に示すように一方のマンホール1に可撓性ホー
ス導入側装置7をマンホールサポート8を介して取付
け、また他方のマンホール2に出口側装置としての誘導
パイプ9を取付ける。
Another method for forming the protective layer 5 will be described. As shown in FIG. 5, a flexible hose introduction side device 7 is attached to one manhole 1 through a manhole support 8 and the other manhole 2 has an outlet. Attach the guide pipe 9 as a side device.
【0026】続いて図6に示すように導入側装置7の出
口よりガラス繊維、ポリエステル繊維等からなる不織布
或いは織布等のベース材に未硬化状態の光硬化性樹脂、
熱硬化性樹脂或いは熱可塑性樹脂等の硬化性樹脂を含浸
させた可撓性ホース10を導入側装置7から供給される
圧搾空気により送り出し、かつ順次反転させつつ膨張さ
せて管渠3の一端側3dから他端側3eへ向けて管渠3
の内壁面3aに押圧して誘導パイプ9の上端9a迄もた
らす。なお可撓性ホース10の先端10aには可撓性ホ
ース10内に供給された圧搾空気を外部へ排出するため
のボビン11が設けられている。ボビン11には更に硬
化手段である紫外線照射装置12を牽引するためのロー
プ13が挿通されている。
Subsequently, as shown in FIG. 6, an uncured photocurable resin is applied to a base material such as a non-woven fabric or a woven fabric made of glass fiber, polyester fiber or the like from the outlet of the introduction side device 7.
A flexible hose 10 impregnated with a curable resin such as a thermosetting resin or a thermoplastic resin is sent out by compressed air supplied from an introduction side device 7, and is sequentially inverted and expanded to be expanded at one end side of the pipe 3. Pipe 3 from 3d to the other end 3e
It is pressed against the inner wall surface 3a of the guide pipe 9 and brought to the upper end 9a of the guide pipe 9. A bobbin 11 for discharging the compressed air supplied into the flexible hose 10 to the outside is provided at the tip 10a of the flexible hose 10. The bobbin 11 is further inserted with a rope 13 for pulling the ultraviolet irradiation device 12 which is a curing means.
【0027】次に図7に示すように誘導パイプ9の上方
に牽引装置を設け、牽引装置14によってロープ13を
牽引し、ロープ13に連結された紫外線照射装置12を
導入側装置7内を通して管渠3の一端側3dまで導入
し、紫外線照射装置12が管渠3の一端側3dにある状
態で紫外線照射装置12を作動させ、他端側3eへ移動
させながら、或いは予め管渠3の他端側3eまで導入
し、紫外線照射装置12が管渠3の他端側3eにある状
態で紫外線照射装置12を作動させ、導入側装置7に設
けられた牽引装置(図示せず)によって紫外線照射装置
12の導入側装置7側に連結されたロープ15を巻き取
り、紫外線照射装置12を管渠3の他端側3eから一端
側3dへ移動させながら紫外線を照射し、可撓性ホース
10を硬化させ、そして可撓性ホース10が硬化して保
護層5となる。その両端を切断してマンホール1及び2
内に突出した部分を切除し、導入側装置7、誘導パイプ
9、紫外線照射装置12、その他の各装置を撤去して管
渠3の更生が完了して更生管渠6となる。
Next, as shown in FIG. 7, a pulling device is provided above the guide pipe 9, the rope 13 is pulled by the pulling device 14, and the ultraviolet irradiation device 12 connected to the rope 13 is passed through the inside of the introduction side device 7. It is introduced to the one end side 3d of the culvert 3 and the ultraviolet irradiating device 12 is operated in a state where the ultraviolet irradiating device 12 is on the one end side 3d of the culvert 3 and is moved to the other end side 3e, or in advance of the other culvert 3 The UV irradiation device 12 is introduced to the end side 3e, the UV irradiation device 12 is operated in a state where the UV irradiation device 12 is on the other end side 3e of the conduit 3, and the UV irradiation is performed by a traction device (not shown) provided in the introduction side device 7. The rope 15 connected to the introduction side device 7 side of the device 12 is wound up and irradiated with ultraviolet rays while moving the ultraviolet irradiation device 12 from the other end side 3e of the conduit 3 to the one end side 3d, and the flexible hose 10 is Let it harden Flexible hose 10 is a protective layer 5 and curing. Manholes 1 and 2 cut at both ends
The part that protrudes inside is cut off, and the introduction side device 7, the guide pipe 9, the ultraviolet irradiation device 12, and other devices are removed to complete the rehabilitation of the canal 3 and become the rehabilitated canal 6.
【0028】また図8に示すように一方のマンホール側
からガラス繊維、ポリエステル繊維等からなる不織布或
いは織布等のベース材に未硬化状態の光硬化性樹脂、熱
硬化性樹脂或いは熱可塑性樹脂等の硬化性樹脂を含浸さ
せた可撓性ホース16を挿入して圧搾空気により膨張さ
せて管渠3の内壁面3aに押圧し、可撓性ホース16の
先端に設けたボビン18を挿通するロープ17の牽引に
より紫外線照射装置12を導入して可撓性ホース16を
硬化せしめて保護層5を形成することも可能である。
Further, as shown in FIG. 8, from one manhole side to a base material such as a non-woven fabric or a woven fabric made of glass fiber, polyester fiber or the like, an uncured photocurable resin, a thermosetting resin or a thermoplastic resin is used. The flexible hose 16 impregnated with the curable resin is inserted, expanded by compressed air, pressed against the inner wall surface 3a of the conduit 3, and inserted through the bobbin 18 provided at the tip of the flexible hose 16. It is also possible to introduce the ultraviolet irradiation device 12 by pulling 17 and cure the flexible hose 16 to form the protective layer 5.
【0029】次に、本発明における既設管渠を管更生
し、既設管渠を再構築する方法の他の実施例を図9乃至
図16によって説明する。
Next, another embodiment of the method for rehabilitating the existing pipe and rebuilding the existing pipe according to the present invention will be described with reference to FIGS. 9 to 16.
【0030】前記実施例同様、図中符号1、2はマンホ
ール、符号3はヒューム管、陶管等からなる管更生すべ
き地中に埋設された既設管渠であり、符号4は止水栓で
ある。
In the same manner as in the above embodiment, reference numerals 1 and 2 in the drawing are manholes, reference numeral 3 is an existing drainage pipe which is buried in the ground to be rehabilitated, such as a fume pipe and a ceramic pipe, and a reference numeral 4 is a water stopcock. Is.
【0031】既設管渠3の内壁面3aは、長期間の使用
により硫化水素等の腐食ガスに晒されて劣化して図10
(a)に図9のC−C線拡大断面図を示すように、新設
時の内壁面3a′に比べ大きく侵食されて壁厚が減少し
て強度が低下し、クラック3b等が発生している場合が
ある。
The inner wall surface 3a of the existing pipe 3 is deteriorated by being exposed to a corrosive gas such as hydrogen sulfide due to long-term use.
As shown in the enlarged sectional view taken along the line CC of FIG. 9 in (a), the inner wall surface 3a ′ is newly eroded more greatly than the newly installed inner wall surface 3a ′, the wall thickness is reduced, the strength is reduced, and cracks 3b are generated. There is a case.
【0032】既設管渠3の管更生に先行して先ず内壁面
3aを高圧水を吹き付ける管内洗浄車等により内壁面3
aを洗浄し、前記実施例同様、自動切削機により劣化部
分3cを完全に切削除去して図10(b)に示すように
内壁面3aの形状を整える。
Prior to the pipe rehabilitation of the existing pipe 3, the inner wall surface 3a is first sprayed with high-pressure water by a pipe cleaning vehicle or the like.
A is cleaned, and the deteriorated portion 3c is completely cut and removed by an automatic cutting machine as in the above-described embodiment to adjust the shape of the inner wall surface 3a as shown in FIG. 10B.
【0033】劣化部分3cが切削除去され壁厚が小とな
った管渠3の内壁面3aにガラス繊維、ポリエステル繊
維等からなる不織布或いは織布のベース材に常温硬化性
樹脂、例えば不飽和ポリエステル樹脂、エポキシ樹脂等
を含浸させた樹脂層21を張設し、続いて樹脂層21の
常温硬化性樹脂が未硬化状態下で樹脂層21の内周面2
1aを金属、例えば鉄、ステンレス鋼、銅合金等からな
る一個或いは複数個からなる板状体22によって図10
(c)に示すように被覆する。板状材22は例えば図1
1に斜視図を示すように樹脂層21の内周面21aを覆
う渦巻状に巻回されたシート状に形成されている。
On the inner wall surface 3a of the pipe 3 whose thickness is reduced by removing the deteriorated portion 3c, a non-woven fabric made of glass fiber, polyester fiber or the like or a base material of a woven fabric is used as a base material of room temperature curable resin such as unsaturated polyester. A resin layer 21 impregnated with a resin, an epoxy resin, or the like is stretched, and subsequently, an inner peripheral surface 2 of the resin layer 21 is formed while the room temperature curable resin of the resin layer 21 is in an uncured state.
1a is formed by a plate-like body 22 made of one or a plurality of metals such as iron, stainless steel, and copper alloy.
Cover as shown in (c). The plate-shaped material 22 is, for example, as shown in FIG.
As shown in the perspective view of FIG. 1, the resin layer 21 is formed in a spirally wound sheet shape that covers the inner peripheral surface 21 a of the resin layer 21.
【0034】次に板状材22及び樹脂層21を貫通して
既設管渠3に達するアンカー孔(図示せず)を適宜複数
個穿孔し、このアンカー孔にロックボルト等の緊張材2
3を挿入して締め付けて樹脂層21に圧縮力を付与して
図10(d)に示すように既設管渠3、樹脂層21及び
板状材22の一体化を図ることにより既設管渠3を強度
の高い金属製の板状材22によって補剛する。
Next, a plurality of anchor holes (not shown) penetrating the plate-shaped member 22 and the resin layer 21 to reach the existing pipe 3 are appropriately perforated, and the tension members 2 such as lock bolts 2 are formed in the anchor holes.
3 is inserted and tightened to apply a compressive force to the resin layer 21, thereby integrating the existing pipe 3 with the resin layer 21 and the plate-shaped member 22 as shown in FIG. Is stiffened by a plate member 22 made of metal having high strength.
【0035】緊張材23の締め付けにより樹脂層21は
圧縮変形されて既設管渠3の内壁面3aと板状材22と
の間に隙間なく充填され、かつ既設管渠3のクラック3
b内に樹脂層22のベース材に含浸された未硬化状態の
常温硬化性樹脂の一部が浸透する。
By tightening the tension member 23, the resin layer 21 is compressed and deformed so that it is filled between the inner wall surface 3a of the existing pipe 3 and the plate-like member 22 without a gap, and the crack 3 of the existing pipe 3 is formed.
Part of the uncured room temperature curable resin impregnated in the base material of the resin layer 22 permeates into b.
【0036】時経過に伴って樹脂層21内及び既設管渠
3のクラック3b内に浸入した常温硬化性樹脂が次第に
硬化して既設管渠3、樹脂層21及び板状材22の一体
化が図れ、既設管渠3を被装する樹脂層21がガラス繊
維等のベース材によって補強された言わば高強度の強化
プラスチックとなり、更にクラック3bによって破損し
た既設管渠3がクラック3b内に浸透した常温硬化性樹
脂により結合されて一体化され、既設管渠3の補強及び
防食が得られる。
The room temperature curable resin that has infiltrated into the resin layer 21 and the crack 3b of the existing pipe 3 over time gradually hardens, and the existing pipe 3, the resin layer 21 and the plate member 22 are integrated. As shown, the resin layer 21 covering the existing pipe 3 becomes a so-called high-strength reinforced plastic reinforced by a base material such as glass fiber, and the existing pipe 3 damaged by the crack 3b penetrates into the crack 3b at room temperature. The curable resin is combined and integrated to provide reinforcement and corrosion protection for the existing pipe 3.
【0037】従って金属製の板状材22によって補強す
ることによって新設管渠の壁厚より小なる壁厚で新設管
渠と同程度或いはそれ以上の強度が容易に達成でき、更
に図10(e)に示すように板状材22の内周面22a
上に硬質ポリウレタン樹脂等の樹脂を吹き付けて被覆層
24を形成することにより更に防食性能の向上を図ると
ともに板状材22の内周面22aの形状を整えることに
よりこのように形成された更生管渠19は耐久性及び流
下性能等の機能を新設管渠と同程度以上に再構築し得
る。
Therefore, by reinforcing the metal plate member 22 with a wall thickness smaller than the wall thickness of the new pipe, it is possible to easily achieve the same strength as or higher than that of the new pipe, and as shown in FIG. ), As shown in FIG.
The rehabilitation pipe thus formed by spraying a resin such as a hard polyurethane resin on the top to further improve the anticorrosion performance and by adjusting the shape of the inner peripheral surface 22a of the plate-shaped member 22. The culvert 19 can be rebuilt with functions such as durability and drainage performance to the same extent or more as those of the newly constructed culvert.
【0038】また被覆層24は板状材22内に光硬化性
樹脂、熱硬化性樹脂或いは熱可塑性樹脂を含む未硬化状
態の可撓性ホースを圧搾空気によって反転させながら導
入したり或いは引き込みによって導入し、かつ圧搾空気
等により板状材22の内周面22aに沿わせて押圧せし
め、その後、可撓性ホースを紫外線照射装置で照射して
可撓性ホースを硬化せしめて形成することも可能であ
る。
The coating layer 24 is formed by introducing or retracting a flexible hose in an uncured state containing a photocurable resin, a thermosetting resin or a thermoplastic resin into the plate-shaped member 22 while inverting it with compressed air. Alternatively, the flexible hose may be introduced and pressed along the inner peripheral surface 22a of the plate-like material 22 by compressed air or the like, and then the flexible hose may be irradiated with an ultraviolet irradiation device to be cured to form the flexible hose. It is possible.
【0039】従って樹脂層21、板状材22及び被覆層
24からなる保護層20を既設管渠3の劣化及び劣化部
分の除去によって減少した壁厚分に相応する厚さL2
至その厚さより小なる厚さであっても既設管渠3を新設
管渠の同程度、或いはそれ以上の強度、耐久性及び流下
性能等の機能を有する更生管渠を得ることができる。
Therefore, the protective layer 20 composed of the resin layer 21, the plate-shaped material 22 and the coating layer 24 has a thickness L 2 or a thickness corresponding to the wall thickness reduced by the deterioration of the existing pipe 3 and the removal of the deteriorated portion. Even if the thickness is small, it is possible to obtain a rehabilitating pipe having the functions of the existing pipe 3 to the same level as that of the new pipe, or higher, such as strength, durability and flow-down performance.
【0040】上記板状材22に代えて、図12に斜視図
を示すように、鉄、ステンレス鋼、銅合金等の金属から
なる、所定長さで比較的大なる幅を有する断面円弧状の
セグメント27a、27bと、比較的小なる幅を有する
断面円弧状のセグメント27c、27d、27e、27
fとを有し、各セグメント27a、27b‥‥27fは
ヒンジ28、28‥‥によって互に連結され、各ヒンジ
28、28‥‥の部位で小さく折り畳まれており、セグ
メント27c、27bの連結部と、セグメント27e、
27fの連結部とを互いに離れる方向aへ押し拡げるこ
とにより図13に断面を示すように円筒状に拡径され円
筒形状が形成される板状材26によって構成することも
できる。
As shown in the perspective view of FIG. 12, instead of the plate-shaped member 22, the metal is made of iron, stainless steel, copper alloy or the like and has an arc-shaped cross section having a predetermined length and a relatively large width. The segments 27a, 27b and the segments 27c, 27d, 27e, 27 having a relatively small width and having an arcuate cross section.
27f are connected to each other by hinges 28, 28, ... And are folded small at the hinges 28, 28 ..., And the connecting portions of the segments 27c, 27b. And segment 27e,
It is also possible to form the plate-shaped member 26 in which the connecting portion of 27f is expanded in the direction a away from each other and expanded in a cylindrical shape to form a cylindrical shape as shown in the cross section in FIG.
【0041】更に各セグメント27a、27b‥‥27
fを互に連結するヒンジ28、28‥‥のヒンジピン2
8a、28a‥‥を抜きはずすことにより各セグメント
27a、27b‥‥27fは互に分離可能に、かつ各ヒ
ンジ28、28‥‥のヒンジピン28a、28a‥‥を
差し込むことにより互いに連結する。ヒンジピン28
a、28a‥‥の挿脱作業を容易にするためヒンジピン
28a、28a‥‥の端部はL字状に折曲することも可
能である。
Further, each segment 27a, 27b ... 27
Hinge pin 2 of hinges 28, 28 ...
.. 27f are separable from each other by removing 8a, 28a ....., and are connected to each other by inserting hinge pins 28a, 28a .. Hinge pin 28
The ends of the hinge pins 28a, 28a ... Can be bent into an L-shape to facilitate the work of inserting / removing a, 28a.
【0042】このように形成された板状材26を図12
に示すように小さく折り畳んだ状態で既設管渠3内に搬
入し、拡開機或いはジャッキ(図示せず)によりセグメ
ント27c、27dの連結部とセグメント27e、27
fの連結部とを互に離れる方向aに拡大して拡げ、円筒
状に拡径させて樹脂層21の内周面21aに圧接保持す
る。
The plate member 26 formed in this way is shown in FIG.
As shown in FIG. 2, the small pipes are loaded into the existing pipe 3 and are connected to the connecting portions of the segments 27c and 27d and the segments 27e and 27 by a spreader or a jack (not shown).
The connecting part of f is expanded and expanded in a direction a away from each other, and is expanded in a cylindrical shape to be pressed against and held by the inner peripheral surface 21a of the resin layer 21.
【0043】各セグメントが円筒状に押し拡げられた状
態においては、セグメント27c、27dの連結部また
はセグメント27e、27fの連結部に内方への過度の
力が作用しない限り板状材が折り畳まれることはない。
またマンホール1、2の開口部の大きさ等により搬入が
制限される場合には、各セグメント27a、27b‥‥
27fを連結するヒンジ28、28‥‥のヒンジピン2
8a、28a‥‥抜き脱し、各セグメント27a、27
b‥‥27fに分割してマンホール内に搬入し、マンホ
ール内で再度各セグメント27a、27b‥‥27fを
連結して板状材26を組立てることも可能である。
In the state where each segment is expanded in a cylindrical shape, the plate member is folded unless an excessive inward force is applied to the connecting portion of the segments 27c and 27d or the connecting portion of the segments 27e and 27f. There is no such thing.
Further, when the carry-in is restricted due to the size of the openings of the manholes 1 and 2, the segments 27a, 27b ...
Hinge pin 2 of hinges 28, 28 ...
8a, 28a ... Withdrawing and removing each segment 27a, 27
It is possible to assemble the plate-like member 26 by dividing it into 27f and carrying it into the manhole and connecting the segments 27a, 27b ... 27f again in the manhole.
【0044】図14は更に他の板状材30を示す斜視図
であって、弾性変形可能な細長いシート状の鉄、ステン
レス鋼等の金属板を、一端部30aが他端部30bの内
側となる筒状即ち渦巻状に形成されていて、図14にそ
の展開斜視図を示すように、板状材30の一端部30a
側には所定寸法隔てて複数の係止穴31a、31a‥‥
が列設され、他端部には所定寸法隔てて前記係止穴31
a、31a‥‥に係止可能な係止片31b、31bが切
起し加工により内方へ突出するように形成され、これら
係止穴31a、31a‥‥と係止片31b、31bとに
より板状材30を拡径した状態に維持する係止部31を
構成している。
FIG. 14 is a perspective view showing still another plate-shaped member 30, in which an elastically deformable elongated sheet-shaped metal plate such as iron or stainless steel is used, with one end 30a inside the other end 30b. One end portion 30a of the plate-shaped member 30 is formed into a cylindrical shape, that is, a spiral shape, and as shown in a developed perspective view of FIG.
A plurality of locking holes 31a, 31a, ...
Are arranged in a row, and the other end is separated by a predetermined dimension from the locking hole 31.
A locking pieces 31b, 31b that can be locked to a, 31a, ... Are formed so as to project inward by cutting and raising, and these locking holes 31a, 31a ,. A locking portion 31 that maintains the plate-shaped member 30 in the expanded state is configured.
【0045】このように形成された板状材30を縮径さ
せた状態で拡開機(図示せず)に装着し、既設管渠3内
に搬入し、拡開機により板状材30を押し拡げて係止穴
31a、31a‥‥と係止片31b、31bとが係止可
能な程度に拡径し、板状材30を樹脂層21の内周面2
1aを押圧する。
The plate-shaped material 30 formed in this way is mounted on an expanding machine (not shown) in a reduced diameter state, carried into the existing pipe 3 and expanded by the expanding machine. .. and the locking pieces 31b, 31b are expanded in diameter so that they can be locked, and the plate-shaped member 30 is attached to the inner peripheral surface 2 of the resin layer 21.
Press 1a.
【0046】次に拡開機による拡径を解除し、樹脂層2
1の弾発力によって板状材30に縮径させる力が作用
し、板状材30に形成した係止穴31a、31a‥‥と
係止片31b、3bとが係合する。これにより板状材3
0は僅かに縮径するが、この縮径分は未硬化状態の樹脂
層21が僅かに復元することにより吸収され、板状材3
0は既設管渠3の内壁面3aに樹脂層21を押し付けた
状態で固定される。
Next, the diameter expansion by the expander is released, and the resin layer 2
A force for reducing the diameter of the plate-shaped member 30 is applied by the elastic force of 1, and the locking holes 31a, 31a, ... Formed in the plate-shaped member 30 and the locking pieces 31b, 3b are engaged with each other. As a result, the plate-shaped material 3
0 is slightly reduced in diameter, but this reduced amount is absorbed by the slight restoration of the uncured resin layer 21, and the plate-shaped material 3
0 is fixed in a state where the resin layer 21 is pressed against the inner wall surface 3a of the existing pipe 3.
【0047】以上説明では、常温硬化性樹脂をベース材
に含浸させた樹脂層21を既設管渠3の内壁面3aに張
設したが、内壁面3aに予めベース材を張設した後、常
温硬化性樹脂を含浸させて樹脂層を形成することも可能
であり、樹脂層を形成する樹脂として常温硬化性樹脂を
用いたが、常温硬化性樹脂に代えて熱硬化性樹脂或いは
熱可塑性樹脂を用いることも可能であり、この場合、板
状材によって樹脂層に圧縮状態を付与した後、紫外線照
射装置等の加熱装置によって加熱する必要がある。また
樹脂層に代えて板状の発泡プラスチック材を用いること
も可能であり、板状材を複数の板状材に分割して構成す
ることも可能である。
In the above description, the resin layer 21 in which the base material is impregnated with the room temperature curable resin is stretched over the inner wall surface 3a of the existing pipe 3. However, after the base material is stretched over the inner wall surface 3a in advance, It is also possible to form a resin layer by impregnating with a curable resin, and the room temperature curable resin was used as the resin for forming the resin layer. However, instead of the room temperature curable resin, a thermosetting resin or a thermoplastic resin may be used. It is also possible to use it. In this case, it is necessary to apply a compressed state to the resin layer with the plate-shaped material and then heat it with a heating device such as an ultraviolet irradiation device. It is also possible to use a plate-shaped foamed plastic material instead of the resin layer, and it is also possible to divide the plate-shaped material into a plurality of plate-shaped materials.
【0048】[0048]
【発明の効果】以上説明した既設管渠を管更生し、管渠
を再構築する方法によれば既設管渠の内壁面の劣化部分
を自動切削機で完全に切削除去し、劣化部分を除去した
既設管渠の内壁面上を、侵食乃至劣化部分の切削除去に
よって減少した壁厚分に相応する厚さ乃至その厚さより
小なる厚さの保護層で被覆することから更生管渠内径が
新設時より小径となることがなく新設管渠の流下性能と
同等程度の流下性能が確保でき、かつ保護層によって既
設管渠に新設管渠と同程度の強度、耐久性の機能がもた
らされることから長期間に亙り管更生効果の安定確保が
得られ、裏込め材等を不要とすることから施工期間の長
期化を招くおそれがない等本発明特有の効果を有する。
EFFECTS OF THE INVENTION According to the method of rehabilitating an existing pipe and rebuilding the pipe as described above, the deteriorated portion of the inner wall surface of the existing pipe is completely cut and removed by an automatic cutting machine, and the deteriorated portion is removed. The inner diameter of the rehabilitated pipe is newly constructed by covering the inner wall surface of the existing pipe with a protective layer with a thickness corresponding to the wall thickness reduced by erosion or cutting removal of the deteriorated part or a thickness smaller than that thickness. Since the diameter will not be smaller than before and the same level of flow performance as the flow performance of the new pipe will be secured, and the protective layer will provide the existing pipe with the same strength and durability as the new pipe. The pipe rehabilitation effect can be stably ensured over a long period of time, and since the backfilling material and the like are not required, there is no possibility of prolonging the construction period.
【図面の簡単な説明】[Brief description of drawings]
【図1】本発明における既設管渠を管更生し、管渠を再
構築する方法の一実施例を説明する断面図である。
FIG. 1 is a cross-sectional view illustrating an embodiment of a method for rehabilitating an existing pipe and rebuilding the pipe according to the present invention.
【図2】本実施例を説明する図1におけるA−A線断面
図である。
FIG. 2 is a sectional view taken along the line AA in FIG. 1 for explaining the present embodiment.
【図3】本実施例に用いられる自動切削機を説明する側
面図である。
FIG. 3 is a side view illustrating an automatic cutting machine used in this embodiment.
【図4】同じく、本実施例を説明する図3のB−B線断
面図である。
FIG. 4 is a sectional view taken along line BB of FIG. 3 for explaining the present embodiment.
【図5】同じく、本実施例を説明する断面図である。FIG. 5 is likewise a sectional view illustrating the present embodiment.
【図6】同じく、本実施例を説明する断面図である。FIG. 6 is likewise a sectional view illustrating the present embodiment.
【図7】同じく、本実施例を説明する断面図である。FIG. 7 is likewise a sectional view for explaining the present embodiment.
【図8】同じく、本実施例を説明する断面図である。FIG. 8 is likewise a sectional view illustrating the present embodiment.
【図9】本発明における既設管渠を管更生し、管渠を再
構築する方法の他の実施例を説明する断面図である。
FIG. 9 is a cross-sectional view illustrating another embodiment of the method of rehabilitating an existing pipe and rebuilding the pipe according to the present invention.
【図10】本実施例を説明する図9におけるC−C線断
面図である。
FIG. 10 is a sectional view taken along line CC in FIG. 9 for explaining the present embodiment.
【図11】同じく、本実施例に用いられる板状材を説明
する斜視図である。
FIG. 11 is also a perspective view illustrating a plate-shaped material used in this example.
【図12】同じく、本実施例に用いられる板状材を説明
する斜視図である。
FIG. 12 is also a perspective view illustrating a plate-shaped material used in this example.
【図13】図12に示す板状材を説明する断面図であ
る。
13 is a cross-sectional view illustrating the plate-shaped member shown in FIG.
【図14】同じく、本実施例に用いられる板状材を説明
する斜視図である。
FIG. 14 is also a perspective view illustrating a plate-shaped member used in this example.
【図15】図14に示す板状材を説明する展開斜視図で
ある。
15 is a developed perspective view illustrating the plate-shaped member shown in FIG.
【図16】従来の既設管渠の管更生方法を説明する断面
図である。
FIG. 16 is a cross-sectional view illustrating a conventional pipe rehabilitation method for an existing pipe.
【図17】同じく、従来の既設管渠の管更生方法を説明
する断面図である。
FIG. 17 is a sectional view for explaining a conventional pipe rehabilitation method for an existing pipe.
【符号の説明】[Explanation of symbols]
3‥‥‥‥‥既設管渠 3a‥‥‥‥内壁面 3c‥‥‥‥劣化部分 4‥‥‥‥‥自動切削機 5‥‥‥‥‥保護層 10‥‥‥‥可撓性ホース 16‥‥‥‥可撓性ホース 20‥‥‥‥保護層 21‥‥‥‥樹脂層 22‥‥‥‥板状材 23‥‥‥‥緊張材 24‥‥‥‥被覆層 26‥‥‥‥板状材 27a、27b、27c、27d、27e、27f‥‥
‥セグメント 28‥‥‥‥ヒンジ 30‥‥‥‥板状材 31‥‥‥‥係止部
3 ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ Flexible hose 20 Protective layer 21 Resin layer 22 Plate material 23 Tensile material 24 Covering layer 26 Plate Material 27a, 27b, 27c, 27d, 27e, 27f ...
... Segment 28 ... Hinge 30 ... Plate-like material 31 ... Locking part
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平5−138738(JP,A) 特開 平2−164952(JP,A) 特開 平5−200869(JP,A) 特開 平6−185105(JP,A) 特開 平5−263986(JP,A) 特開 昭56−121655(JP,A) (58)調査した分野(Int.Cl.7,DB名) E03F 3/06 E03F 3/04 F16L 1/00 F16L 55/16 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-5-138738 (JP, A) JP-A-2-164952 (JP, A) JP-A-5-200869 (JP, A) JP-A-6- 185105 (JP, A) JP-A-5-263986 (JP, A) JP-A-56-121655 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) E03F 3/06 E03F 3 / 04 F16L 1/00 F16L 55/16

Claims (5)

    (57)【特許請求の範囲】(57) [Claims]
  1. 【請求項1】 既設管渠の内壁面に生じた劣化部分を、
    隣り合うマンホール間のように長い範囲に亘って自動切
    削機で完全に切削除去し、 劣化部分を除去した既設管渠の内壁面上に金属製板状材
    を圧接固定させて内壁面を被覆し、 次いで、前記金属製板状材の内周面に硬化性樹脂による
    被覆層を、切削除去によって減少した壁厚分に相応する
    厚さ乃至その厚さより小なる厚さの保護層が金属製板状
    材と前記被覆層によって一体形成されるように、且つ
    金属製板状材と被覆層とより成る保護層によって既設
    管渠に新設管渠と同等程度の強度、耐久性及び流下性能
    の機能がもたらされるように被覆することを特徴とする
    既設管渠を更生し、管渠を再構築する方法。
    1. A deteriorated part generated on an inner wall surface of an existing pipe,
    Completely cut and remove over a long range, such as between adjacent manholes, with an automatic cutting machine, press the metal plate-shaped material onto the inner wall surface of the existing pipe with the deteriorated parts removed, and cover the inner wall surface. Then, a coating layer made of a curable resin is formed on the inner peripheral surface of the metal plate-shaped material, and a protective layer having a thickness corresponding to the wall thickness reduced by cutting or a protective layer having a thickness smaller than that thickness is formed on the metal plate. as integrally formed by Jo material and the coating layer, and the upper
    With a protective layer consisting of a metal plate and a coating layer, it has the same strength, durability and flow-down performance as that of a new pipe in an existing pipe.
    A method for rehabilitating an existing drainage pipe and rebuilding the drainage pipe, which is characterized by coating so as to bring about the function of.
  2. 【請求項2】 上記金属製板状材が、板状材を貫通して
    既設管渠に達して穿設されたアンカー孔に挿入された緊
    張材によって既設管渠に固定される請求項に記載の既
    設管渠を管更生し、管渠再構築する方法。
    Wherein said metal plate material, to claim 1 which is fixed to the existing sewer by tendons inserted into the anchor hole formed by penetrating the plate-shaped member reaches the existing sewer how the existing sewer and pipe rehabilitation, reconstructs the Kanmizo description.
  3. 【請求項3】 上記金属製板状材が、 互いにヒンジを介して折り畳み可能に連結して円筒形状
    を形成する断面円弧状の複数のセグメントからなり、 ヒンジによって折り畳んだ状態の板状材の各セグメント
    をヒンジを解して円筒状に広げ既設管渠の内壁面に各セ
    グメントを圧接することによって既設管渠の内壁面上に
    固定される請求項に記載の既設管渠を管更生し、管渠
    を再構築する方法。
    3. The plate member made of metal is composed of a plurality of segments having an arcuate cross section, which are foldably connected to each other via a hinge to form a cylindrical shape, and each of the plate members folded by the hinge. The segments are unfolded into a cylindrical shape by unfolding them and pressing each segment against the inner wall surface of the existing drainage pipe
    The method for rehabilitating an existing pipe, as claimed in claim 1 , which is fixed , to reconstruct the pipe.
  4. 【請求項4】 上記金属製板状材が、拡径可能な筒状に
    巻かれたシート状であって、かつ既設管渠の内壁面に圧
    接固定する拡径状態に保持する係止部を有する請求項
    に記載の既設管渠を管更生し、管渠を再構築する方法。
    4. The metal plate-shaped member is a sheet-like member that is rolled into a cylindrical shape capable of expanding the diameter, and has a locking portion that holds the expanded diameter state by pressing and fixing it to the inner wall surface of the existing pipe. Claim 1 having
    The method of rehabilitating the existing pipe and reconstructing the pipe.
  5. 【請求項5】 上記保護層が、 劣化部分を除去した既設管渠の内壁面上に張設され、繊
    維からなるベース材に未硬化状態の硬化性樹脂を含浸さ
    せた樹脂層を有し、この樹脂層は、その 内周面上に上記金属製板状材を圧接
    固定した後硬化せしめられる請求項1〜4のいずれか1
    つに記載の既設管渠を管更生し、管渠を再構築する方
    法。
    5. The protective layer has a resin layer stretched on the inner wall surface of an existing pipe where the deteriorated portion is removed, and a base material made of fibers impregnated with an uncured curable resin, 5. The resin layer according to claim 1 , wherein the metal plate-like material is press-contacted and fixed on the inner peripheral surface thereof and then cured.
    The method of rehabilitating the existing conduit and reconstructing the conduit.
JP03740395A 1995-02-24 1995-02-24 How to rehabilitate an existing sewer and rebuild the sewer Expired - Fee Related JP3436604B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP03740395A JP3436604B2 (en) 1995-02-24 1995-02-24 How to rehabilitate an existing sewer and rebuild the sewer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP03740395A JP3436604B2 (en) 1995-02-24 1995-02-24 How to rehabilitate an existing sewer and rebuild the sewer

Publications (2)

Publication Number Publication Date
JPH08232333A JPH08232333A (en) 1996-09-10
JP3436604B2 true JP3436604B2 (en) 2003-08-11

Family

ID=12496572

Family Applications (1)

Application Number Title Priority Date Filing Date
JP03740395A Expired - Fee Related JP3436604B2 (en) 1995-02-24 1995-02-24 How to rehabilitate an existing sewer and rebuild the sewer

Country Status (1)

Country Link
JP (1) JP3436604B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5036370B2 (en) * 2007-03-30 2012-09-26 クボタシーアイ株式会社 Sewer pipe, construction method thereof, and water stop member
JP2011246901A (en) * 2010-05-25 2011-12-08 Maithick Co Ltd Method for repairing inner wall surface of concrete sewer pipeline facility
JP5801166B2 (en) * 2011-11-22 2015-10-28 吉佳エンジニアリング株式会社 Existing pipe repair method
JP5984516B2 (en) * 2012-06-04 2016-09-06 吉佳エンジニアリング株式会社 Pipe repair structure and repair method
JP2016053262A (en) * 2014-09-03 2016-04-14 株式会社昇和産業 Earthquake strengthening pipe and in-pipe earthquake strengthening method

Also Published As

Publication number Publication date
JPH08232333A (en) 1996-09-10

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