JP2014109361A

JP2014109361A - Pipeline regeneration method

Info

Publication number: JP2014109361A
Application number: JP2012265385A
Authority: JP
Inventors: Hidetoshi Masutani; 英俊桝谷; Ryoichiro Nakamura; 良一郎中村; Kentaro Nishijima; 賢太朗西島
Original assignee: Kubota Corp; Kubota CI Co Ltd
Current assignee: Kubota Corp; Kubota CI Co Ltd
Priority date: 2012-12-04
Filing date: 2012-12-04
Publication date: 2014-06-12

Abstract

PROBLEM TO BE SOLVED: To provide a pipeline regeneration method which can fix a regenerated pipe by injecting a filling material into a clearance between an internal face of an existing pipe and an external face of the regenerated pipe without installing a spacer to the existing pipe in advance, and can prevent the float of the regenerated pipe caused by the filling material.SOLUTION: In a pipeline regeneration method, the regenerated pipe 102 is arranged in the existing pipe 100 so that the clearance 50 is formed between the internal face of the existing pipe 100 and the external face of the regenerated pipe 102, and thereafter, in this state, an expansible body 60 in a contracted state is introduced into the space 50. Next, the expansible body 60 is expanded, and the regenerated pipe 102 is pushed against the bottom of the existing pipe 100. Then, in this state, the filling material 104 is injected into a lower portion of an air space between the internal face of the existing pipe 100 and the external face of the regenerated pipe 102 from the clearance 50 by using a filling material injection hose 64. After the filling material 104 is solidified, the expansible body 60 is contracted, and drawn out of the clearance 50.

Description

この発明は管路更生方法に関し、特にたとえば、既設管内に更生管を設けた後、既設管の内面と更生管の外面との間に充填材を注入して更生管を既設管に固定する、管路更生方法に関する。 The present invention relates to a pipe rehabilitation method, and in particular, for example, after providing a rehabilitation pipe in an existing pipe, a filler is injected between the inner surface of the existing pipe and the outer surface of the rehabilitation pipe, and the rehabilitation pipe is fixed to the existing pipe. It relates to a pipeline rehabilitation method.

従来、老朽化した既設管を更生する管路更生方法として、既設管内に更生管を設けた後、既設管の内面と更生管の外面との間に充填材を注入して更生管を既設管に固定する管路更生方法が知られている。このような管路更生方法では、既設管の内面と更生管の外面との間に充填材注入ホースを導入するための空隙を確保すると共に、注入した充填材によって更生管が浮上してしまうことを防止するために、スペーサが用いられる。 Conventionally, as a pipe rehabilitation method for rehabilitating aging existing pipes, a rehabilitation pipe is installed in the existing pipe and then a filler is injected between the inner surface of the existing pipe and the outer surface of the rehabilitation pipe. There is known a method for rehabilitating pipes. In such a pipe rehabilitation method, a space for introducing the filler injection hose is secured between the inner surface of the existing pipe and the outer surface of the rehabilitation pipe, and the rehabilitation pipe is floated by the injected filler. In order to prevent this, a spacer is used.

たとえば、特許文献１には、従来のこの種の管路更生方法の一例が開示される。特許文献１の技術では、先ず、全体的に開口のある湾曲形スペーサを既設管内面にその長手方向の全体に亘って設置する。次に、背面にリブを有する帯状の管路更生部材（ストリップ）を既設管およびスペーサに密着させるように螺旋状に巻回し、更生管（ライナー）を製管する。そして、スペーサの介在によって既設管と更生管との間にできた空隙を通じて、更生管の外面に充填材（裏込め材）を注入して更生管を固定する。
特開平７−１００９２５号公報 [Ｂ２９Ｃ６３／２６] For example, Patent Document 1 discloses an example of a conventional pipe rehabilitation method of this type. In the technique of Patent Document 1, first, a curved spacer having an opening as a whole is installed on the inner surface of an existing pipe over the entire length thereof. Next, a strip-shaped pipe rehabilitation member (strip) having ribs on the back surface is spirally wound so as to be in close contact with the existing pipe and the spacer, thereby producing a rehabilitation pipe (liner). Then, a filler (backfill material) is injected into the outer surface of the rehabilitated pipe through the gap formed between the existing pipe and the rehabilitated pipe by the spacer, and the rehabilitated pipe is fixed.
JP-A-7-10095 [B29C 63/26]

特許文献１には、具体的方法は記載されていないが、既設管へのスペーサの取り付けは、図２２に示すように実施されているのが現状である。すなわち、長さが１２００ｍｍ程度の短尺の鉄製スペーサを既設管内に多数持ち込み、端から順番に１つずつ、スペーサを人力で支えながら既設管の内面頂部にアンカボルト等で固定していく。しかしながら、スペーサは重いため（小さいタイプのものでも８ｋｇ程度の重量がある）、これを人力で支えながらアンカボルトで順次固定していく作業には大きな労力を要する。 Although a specific method is not described in Patent Document 1, the attachment of the spacer to the existing pipe is currently performed as shown in FIG. That is, a large number of short iron spacers having a length of about 1200 mm are brought into the existing pipe, and one by one in order from the end is fixed to the top of the inner surface of the existing pipe with an anchor bolt or the like while supporting the spacer manually. However, since the spacer is heavy (even a small type has a weight of about 8 kg), a large amount of labor is required for the work of sequentially fixing it with anchor bolts while supporting it with human power.

また、特許文献１の技術では、スペーサを既設管に取り付けた後で、既設管内に更生管を設ける。この際、管路更生部材を既設管に密着させて製管するので、自由が利かず、既設管の曲所（段差部や屈曲部など）に追従させることが困難である。このため、既設管の曲所では、管路更生部材を割って穴埋めするなど、非定常の人力製管が必要となり、施工性が悪い。 Moreover, in the technique of patent document 1, after attaching a spacer to an existing pipe, a renovated pipe is provided in the existing pipe. At this time, since the pipe rehabilitation member is brought into close contact with the existing pipe to produce the pipe, there is no freedom, and it is difficult to follow a curved portion (a stepped part or a bent part) of the existing pipe. For this reason, unsteady human-made pipes such as breaking the pipe rehabilitation member to fill the hole are necessary at the existing pipe bend, and the workability is poor.

それゆえに、この発明の主たる目的は、新規な、管路更生方法を提供することである。 Therefore, a main object of the present invention is to provide a novel method for rehabilitating a pipeline.

この発明の目的は、既設管に対して予めスペーサを設置することなく、既設管の内面と更生管の外面との間に充填材を注入でき、かつ充填材による更生管の浮上を防止できる、管路更生方法を提供することである。 The object of the present invention is to insert a filler between the inner surface of the existing pipe and the outer surface of the rehabilitated pipe without installing a spacer in advance with respect to the existing pipe, and to prevent the rehabilitation pipe from being lifted by the filler. It is to provide a pipeline rehabilitation method.

この発明のさらに他の目的は、施工性に優れる、管路更生方法を提供することである。 Still another object of the present invention is to provide a pipeline rehabilitation method that is excellent in workability.

この発明は、上記の課題を解決するために、以下の構成を採用した。なお、括弧内の参照符号および補足説明などは、本発明の理解を助けるために後述する実施の形態との対応関係を示したものであって、この発明を何ら限定するものではない。 The present invention employs the following configuration in order to solve the above problems. Note that reference numerals in parentheses and supplementary explanations indicate correspondence with embodiments described later in order to help understanding of the present invention, and do not limit the present invention.

第１の発明は、（ａ）既設管の内面と更生管の外面との間に隙間を空けるようにして既設管内に更生管を設け、（ｂ）更生管の全長に亘るように収縮状態の膨張体を隙間に導入し、（ｃ）膨張体を膨張させ、当該膨張体によって更生管を既設管の底部に押し付け、（ｄ）充填材注入ホースを用いて隙間から既設管の内面と更生管の外面との間の下部分に充填材を注入し、（ｅ）充填材が固化した後、膨張体を収縮させて隙間から抜き取る、管路更生方法である。 In the first invention, (a) a rehabilitation pipe is provided in the existing pipe so as to leave a gap between the inner surface of the existing pipe and the outer surface of the rehabilitation pipe, and (b) the contracted state extends over the entire length of the rehabilitation pipe. The expansion body is introduced into the gap, (c) the expansion body is expanded, the rehabilitation pipe is pressed against the bottom of the existing pipe by the expansion body, and (d) the inner surface of the existing pipe and the rehabilitation pipe from the gap using the filler injection hose (E) After the filler is solidified, the expanded body is contracted and extracted from the gap.

第１の発明では、既設管（１００）内に更生管（１０２）を設けた後、既設管の内面と更生管の外面との間にセメントミルク等の充填材（１０４）を注入して更生管を既設管に固定することによって、既設管路を更生する。先ず、ステップ（ａ）では、既設管の内面と更生管の外面との間に隙間（５０）を空けるようにして既設管内に更生管を設ける。つまり、更生管の外径が既設管の内径よりも小さくなるように更生管が設けられる。続くステップ（ｂ）では、既設管の内面と更生管の外面との間に設けた隙間に対して、更生管の全長に亘るように収縮状態の膨張体（６０）を導入する。ここで、膨張体は、径方向に膨張収縮可能な長尺体であり、実施例では、内圧が加えられたときには筒状に膨張し、内圧が加えられないときには偏平状に収縮する長尺の筒状体が用いられる。続くステップ（ｃ）では、膨張体に空気や水などで内圧をかける等して膨張させ、膨張体によって更生管を既設管の底部に押し付ける。この際には、更生管の下半部が既設管の内面に密着するようにすることが好ましい。続くステップ（ｄ）では、膨張体の側方の隙間に充填材注入ホース（６４）を導入し、既設管の内面と更生管の外面との間の下部分に対して充填材を注入する。そして、ステップ（ｅ）では、充填材が固化した後、つまり充填材によって更生管の下部が既設管の底部に密着した状態で固定されると、膨張体の内圧を開放する等して膨張体を収縮させ、隙間から膨張体を抜き取る。 In the first invention, after providing the rehabilitation pipe (102) in the existing pipe (100), the filler (104) such as cement milk is injected between the inner surface of the existing pipe and the outer surface of the rehabilitation pipe. Rehabilitate the existing pipe line by fixing the pipe to the existing pipe. First, in step (a), a rehabilitation pipe is provided in the existing pipe so as to leave a gap (50) between the inner surface of the existing pipe and the outer surface of the rehabilitation pipe. That is, the rehabilitation pipe is provided so that the outer diameter of the rehabilitation pipe is smaller than the inner diameter of the existing pipe. In the following step (b), the contracted expansion body (60) is introduced into the gap provided between the inner surface of the existing tube and the outer surface of the rehabilitated tube so as to cover the entire length of the rehabilitated tube. Here, the expansion body is a long body that can expand and contract in the radial direction. In the embodiment, the expansion body expands in a cylindrical shape when an internal pressure is applied, and contracts in a flat shape when the internal pressure is not applied. A cylindrical body is used. In the subsequent step (c), the expansion body is expanded by applying internal pressure with air or water, and the rehabilitation pipe is pressed against the bottom of the existing pipe by the expansion body. In this case, it is preferable that the lower half part of the rehabilitation pipe is in close contact with the inner surface of the existing pipe. In the subsequent step (d), the filler injection hose (64) is introduced into the gap on the side of the expansion body, and the filler is injected into the lower part between the inner surface of the existing pipe and the outer surface of the rehabilitation pipe. In step (e), after the filler is solidified, that is, when the lower part of the rehabilitation pipe is fixed in close contact with the bottom of the existing pipe by the filler, the expansion body is released by releasing the internal pressure of the expansion body. Is contracted and the expansion body is extracted from the gap.

第１の発明によれば、既設管に対して予めスペーサを設置することなく、既設管の内面と更生管の外面との間に充填材を注入して更生管を既設管に固定でき、かつ充填材による更生管の浮上を防止できる。すなわち、スペーサを既設管の内面にアンカボルト等で固定する作業を省略できるので、スペーサの取り付けにかかる時間を短縮できると共に、人力による管内での作業が軽減されて、より安全な工法に近づく。 According to the first invention, the rehabilitating pipe can be fixed to the existing pipe by injecting a filler between the inner surface of the existing pipe and the outer surface of the rehabilitating pipe without previously installing a spacer with respect to the existing pipe, and The rehabilitation pipe can be prevented from rising due to the filler. That is, since the work of fixing the spacer to the inner surface of the existing pipe with an anchor bolt or the like can be omitted, the time required for attaching the spacer can be shortened, and the work in the pipe by human power is reduced, and a safer construction method is approached.

また、既設管の内面と更生管の外面との間に隙間を空けるように更生管を設けるので、既設管曲所での更生管の追従性が向上し、非定常の人力作業を減らすことができる。したがって、施工性に優れる。 In addition, since the rehabilitation pipe is provided so that there is a gap between the inner surface of the existing pipe and the outer surface of the rehabilitation pipe, the followability of the rehabilitation pipe at the existing pipe bend is improved, and unsteady manpower work can be reduced. it can. Therefore, it is excellent in workability.

第２の発明は、第１の発明に従属し、（ｆ）ステップ（ｅ）の後、充填材注入ホースを用いて隙間から既設管の内面と更生管の外面との間に残った空隙に充填材をさらに注入する。 The second invention is dependent on the first invention, and after (f) step (e), the gap remaining between the inner surface of the existing pipe and the outer surface of the rehabilitated pipe from the gap using the filler injection hose is used. Inject further filler.

第２の発明では、ステップ（ｅ）の後に行われるステップ（ｆ）において、既設管（１００）の内面と更生管の外面（１０２）との間の隙間（５０）に充填材注入ホース（６４）を導入し、既設管の内面と更生管の外面との間に残った空隙に対して充填材（１０４）をさらに注入する。 In the second invention, in step (f) performed after step (e), the filler injection hose (64) is inserted into the gap (50) between the inner surface of the existing pipe (100) and the outer surface (102) of the rehabilitation pipe. ), And a filler (104) is further injected into the gap remaining between the inner surface of the existing tube and the outer surface of the rehabilitated tube.

第２の発明によれば、更生管を既設管に対してより確実に固定することができる。また、既設管と更生管とが完全に一体化することによって、更生管の強度が向上する。 According to the second invention, the rehabilitation pipe can be more reliably fixed to the existing pipe. Moreover, the strength of the rehabilitation pipe is improved by completely integrating the existing pipe and the rehabilitation pipe.

第３の発明は、第２の発明に従属し、（ｇ）ステップ（ｅ）の後であってステップ（ｆ）の前に、隙間に一連の強度部材を連続的に導入する。 The third invention is dependent on the second invention, and (g) after the step (e) and before the step (f), a series of strength members are continuously introduced into the gap.

第３の発明では、ステップ（ｅ）の後であってステップ（ｆ）の前に行われるステップ（ｇ）において、既設管（１００）の内面と更生管の外面（１０２）との間の隙間（５０）に対して、一連の強度部材（６６）を連続的に導入する。そして、ステップ（ｆ）では、強度部材を導入した後に残る隙間に対して充填材注入ホース（６４）を導入し、既設管の内面と更生管の外面との間に残った空隙に充填材（１０４）を注入する。これによって、強度部材は、充填材に埋め込まれる。 In the third invention, the gap between the inner surface of the existing pipe (100) and the outer surface (102) of the rehabilitated pipe in step (g) after step (e) and before step (f). For (50), a series of strength members (66) are continuously introduced. In step (f), the filler injection hose (64) is introduced into the gap remaining after the strength member is introduced, and the filler (in the gap remaining between the inner surface of the existing pipe and the outer surface of the rehabilitated pipe ( 104). Thereby, the strength member is embedded in the filler.

第３の発明によれば、充填材が強度部材によって補強されるので、更生管の強度をより向上させることができる。 According to the third invention, since the filler is reinforced by the strength member, the strength of the rehabilitated pipe can be further improved.

この発明によれば、既設管に対して予めスペーサを設置することなく、既設管の内面と更生管の外面との間に充填材を注入して更生管を既設管に固定でき、かつ充填材による更生管の浮上を防止できる。すなわち、スペーサを既設管の内面にアンカボルト等で固定する作業を省略できるので、スペーサの取り付けにかかる時間を短縮できると共に、人力による管内での作業が軽減されて、より安全な工法に近づく。 According to the present invention, the filler can be fixed to the existing pipe by injecting the filler between the inner surface of the existing pipe and the outer surface of the renovated pipe without installing a spacer in advance with respect to the existing pipe. Can prevent the rehabilitation pipe from rising. That is, since the work of fixing the spacer to the inner surface of the existing pipe with an anchor bolt or the like can be omitted, the time required for attaching the spacer can be shortened, and the work in the pipe by human power is reduced, and a safer construction method is approached.

この発明の上述の目的、その他の目的、特徴および利点は、図面を参照して行う後述の実施例の詳細な説明から一層明らかとなろう。 The above object, other objects, features, and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

この発明の一実施例である管路更生方法によって既設管内を更生した様子を示す図解図である。It is an illustration figure which shows a mode that the existing pipe inside was renovated by the pipe line renovation method which is one Example of this invention. 管路更生方法に用いる管路更生部材の一例を示す図解図である。It is an illustration figure which shows an example of the pipe rehabilitation member used for the pipe rehabilitation method. 既設管内に更生管を設けるときの様子を示す図解図である。It is an illustration figure which shows a mode when providing a rehabilitation pipe | tube in an existing pipe | tube. 既設管内に更生管を設けた状態を示す径方向断面図である。It is radial direction sectional drawing which shows the state which provided the renovation pipe | tube in the existing pipe | tube. 既設管内面と更生管外面との間の隙間に収縮状態の膨張体を導入するときの様子を示す径方向断面図である。It is radial direction sectional drawing which shows a mode when the expansion body of a contraction state is introduce | transduced into the clearance gap between the existing pipe inner surface and the renovated pipe outer surface. 既設管内面と更生管外面との間の隙間に導入した膨張体を膨張させたときの様子を示す径方向断面図である。It is radial direction sectional drawing which shows a mode when the expansion body introduce | transduced into the clearance gap between the existing pipe inner surface and the renovated pipe outer surface is expanded. 既設管内面と更生管外面との間の隙間に充填材注入ホースを導入して充填材を注入するときの様子を示す径方向断面図である。It is radial direction sectional drawing which shows a mode when a filler injection hose is introduce | transduced into the clearance gap between an existing pipe inner surface and a renovated pipe outer surface, and a filler is inject | poured. 充填材によって更生管の下半部が既設管に固定された様子を示す径方向断面図である。It is radial direction sectional drawing which shows a mode that the lower half part of the rehabilitation pipe | tube was fixed to the existing pipe | tube with the filler. 既設管内面と更生管外面との間の隙間に充填材注入ホースを導入して充填材をさらに注入するときの様子を示す径方向断面図である。It is radial direction sectional drawing which shows a mode when a filler injection hose is introduce | transduced into the clearance gap between an existing pipe inner surface and a renovated pipe outer surface, and a filler is further inject | poured. 更生管の周方向全体に充填材が充填された様子を示す径方向断面図である。It is radial direction sectional drawing which shows a mode that the filler was filled to the whole circumferential direction of the rehabilitation pipe | tube. この発明の他の実施例である管路更生方法において、既設管内面と更生管外面との間の隙間に強度部材を導入するときの様子を示す図解図である。It is an illustration figure which shows a mode when a strength member is introduce | transduced into the clearance gap between the existing pipe inner surface and the renovated pipe outer surface in the pipe line rehabilitation method which is another Example of this invention. 図１１の強度部材の成形前後の形状を説明するための図解図であり、（ａ）は変形前の帯状部材の断面を示し、（ｂ）は成形後の強度部材の断面を示す。It is an illustration for demonstrating the shape before and behind shaping | molding of the strength member of FIG. 11, (a) shows the cross section of the strip | belt-shaped member before a deformation | transformation, (b) shows the cross section of the strength member after shaping | molding. 強度部材の導入後に、既設管内面と更生管外面との間の隙間に充填材注入ホースを導入して充填材をさらに注入するときの様子を示す径方向断面図である。It is radial direction sectional drawing which shows a mode when a filler injection hose is introduce | transduced into the clearance gap between an existing pipe inner surface and the renovated pipe outer surface after the intensity | strength member is introduce | transduced, and a filler is further inject | poured. 更生管の周方向全体に充填材が充填された様子を示す径方向断面図である。It is radial direction sectional drawing which shows a mode that the filler was filled to the whole circumferential direction of the rehabilitation pipe | tube. この発明の管路更生方法のさらに他の実施例に用いる強度部材を示す図解図である。It is an illustration figure which shows the strength member used for the further another Example of the pipe line renovation method of this invention. 既設管内面と更生管外面との間の隙間に図１５に示す強度部材を導入するときの様子を示す図解図である。It is an illustration figure which shows a mode when the intensity | strength member shown in FIG. 15 is introduce | transduced into the clearance gap between the existing pipe inner surface and the renovated pipe outer surface. 強度部材の導入後に、既設管内面と更生管外面との間の隙間に充填材注入ホースを導入して充填材をさらに注入するときの様子を示す径方向断面図である。It is radial direction sectional drawing which shows a mode when a filler injection hose is introduce | transduced into the clearance gap between an existing pipe inner surface and the renovated pipe outer surface after the intensity | strength member is introduce | transduced, and a filler is further inject | poured. 更生管の周方向全体に充填材が充填された様子を示す径方向断面図である。It is radial direction sectional drawing which shows a mode that the filler was filled to the whole circumferential direction of the rehabilitation pipe | tube. この発明の管路更生方法のさらに他の実施例に用いる強度部材を示す図解図である。It is an illustration figure which shows the strength member used for the further another Example of the pipe line renovation method of this invention. この発明の管路更生方法のさらに他の実施例に用いる強度部材を示す図解図である。It is an illustration figure which shows the strength member used for the further another Example of the pipe line renovation method of this invention. 更生管の周方向全体に充填材が充填された様子を示す径方向断面図である。It is radial direction sectional drawing which shows a mode that the filler was filled to the whole circumferential direction of the rehabilitation pipe | tube. この発明のその他の実施例において既設管内面と更生管外面との間の隙間に収縮状態の膨張体を導入するときの様子を示す径方向断面図である。It is radial direction sectional drawing which shows a mode when the expansion body of a contraction state is introduce | transduced into the clearance gap between the existing pipe inner surface and the renovated pipe outer surface in the other Example of this invention. この発明のその他の実施例において既設管内面と更生管外面との間の隙間に導入した膨張体を膨張させたときの様子を示す径方向断面図である。It is radial direction sectional drawing which shows a mode when the expansion body introduced into the clearance gap between the existing pipe inner surface and the renovated pipe outer surface is expanded in the other Example of this invention. 従来工法においてスペーサを取り付けるときの様子を示す図解図である。It is an illustration figure which shows a mode when attaching a spacer in a conventional construction method.

図１を参照して、この発明の一実施例である管路更生方法は、既設管１００内に更生管１０２を設けた後、既設管１００の内面と更生管１０２の外面との間にセメントミルク等の充填材（裏込材）１０４を注入して更生管１０２を既設管１００に固定することによって、既設管路を更生するものである。 Referring to FIG. 1, in the pipe rehabilitation method according to one embodiment of the present invention, a cement pipe is provided between an inner surface of existing pipe 100 and an outer surface of rehabilitated pipe 102 after providing rehabilitated pipe 102 in existing pipe 100. The existing pipe line is rehabilitated by injecting a filler (backing material) 104 such as milk and fixing the rehabilitation pipe 102 to the existing pipe 100.

なお、この発明に係る管路更生方法は、鉄筋コンクリート管（ヒューム管）、合成樹脂管および金属管などの種々の既設管１００の更生に適用可能であり、特に、８００ｍｍ−３０００ｍｍの中大口径を有する下水管の更生に適している。 The pipe rehabilitation method according to the present invention can be applied to the rehabilitation of various existing pipes 100 such as reinforced concrete pipes (fume pipes), synthetic resin pipes, and metal pipes. Suitable for rehabilitation of sewer pipes.

先ず、既設管１００内に更生管１０２を形成するための管路更生部材１０について説明する。図２を参照して、管路更生部材１０は、螺旋状に巻回されると共に、その両側部に形成される第１嵌合部２４および第２嵌合部３２（以下、これらを包括して「嵌合部２４，３２」と言うことがある。）が幅方向に順次嵌合されることによって更生管１０２を形成するものである。 First, the pipe line rehabilitation member 10 for forming the rehabilitation pipe 102 in the existing pipe 100 will be described. Referring to FIG. 2, the pipe rehabilitation member 10 is spirally wound and includes a first fitting portion 24 and a second fitting portion 32 (hereinafter, these are formed on both sides). In other words, the rehabilitation pipe 102 is formed by sequentially fitting the fitting parts 24 and 32 in the width direction.

具体的には、管路更生部材１０は、たとえば、硬質塩化ビニル等の合成樹脂の押出成形によって連続的に形成される。管路更生部材１０の本体１２は、長尺の帯状に形成され、その表面１４は平滑に形成されて更生管１０２の内面を構成する。本体２０の裏面１６、つまり更生管１０２の外面となって既設管１００の内面と対向する面には、裏面１６から直交方向に突出して長手方向に沿って延びる板状のリブ１８が形成される。また、リブ１８の端部には、充填材１０４に埋め込まれた際にアンカ機能を発揮するアンカ部２０が形成される。 Specifically, the pipe rehabilitation member 10 is continuously formed by, for example, extrusion molding of a synthetic resin such as hard vinyl chloride. The main body 12 of the pipe rehabilitation member 10 is formed in a long band shape, and its surface 14 is formed smoothly to constitute the inner surface of the rehabilitation pipe 102. On the back surface 16 of the main body 20, that is, the surface facing the inner surface of the existing tube 100 that is the outer surface of the rehabilitated tube 102, plate-like ribs 18 that protrude in the orthogonal direction from the back surface 16 and extend along the longitudinal direction are formed. . An anchor portion 20 that exhibits an anchor function when embedded in the filler 104 is formed at the end of the rib 18.

また、本体１２の一方側縁には、本体１２の裏面１６側で外側方に開口する条溝２２を有する第１嵌合部（雌側の嵌合部）２４が長手方向の全体に亘って形成される。第１嵌合部２４は、本体１２の一方側縁から外側方に延出する第１壁２４ａ、本体２０の一方側縁から既設管１００側に向かって直交方向に延出する第２壁２４ｂ、および第２壁２４ｂの先端部から外側方に延出する第３壁２４ｃを含み、これらの壁２４ａ，２４ｂ，２４ｃによって外側方に開口する条溝２２が形成される。また、第１壁２４ａおよび第３壁２４ｃの先端部には、条溝２２内面側に向かって突出する係止部２６が形成される。 Moreover, the 1st fitting part (female side fitting part) 24 which has the groove | channel 22 opened to the outer side by the back surface 16 side of the main body 12 is formed in the one side edge of the main body 12 over the whole longitudinal direction. It is formed. The first fitting portion 24 has a first wall 24a extending outward from one side edge of the main body 12, and a second wall 24b extending in the orthogonal direction from the one side edge of the main body 20 toward the existing pipe 100 side. , And a third wall 24c extending outward from the tip of the second wall 24b, and a groove 22 that opens outward is formed by these walls 24a, 24b, and 24c. In addition, a locking portion 26 that protrudes toward the inner surface side of the groove 22 is formed at the distal ends of the first wall 24a and the third wall 24c.

一方、本体１２の他側縁には、その裏面１６側で外側方に突出する突条３０を有する第２嵌合部（雄側の嵌合部）３２が長手方向の全体に亘って形成される。第２嵌合部３２は、本体１２の他側縁から既設管１００側に向かって直交方向に延出する第４壁３２ａ、および第４壁３２ａの高さ方向中央部から外側方に突出する突条３０を含む。突条３０は、第１嵌合部２４の条溝２２に嵌め込まれる部分であり、この突条３０には、長手方向に延びるかつ外側方に向かって開口するスリット３４が形成される。また、突条３０の先端部には、返し部３６が形成される。条溝２２に突条３０が嵌め込まれた際には、係止部２６と返し部３６とが係合して、嵌合部２４，３２の離脱が防止される。 On the other hand, a second fitting portion (male-side fitting portion) 32 having a protrusion 30 protruding outward on the back surface 16 side is formed on the other side edge of the main body 12 over the entire longitudinal direction. The The second fitting portion 32 protrudes outward from the fourth wall 32a extending in the orthogonal direction from the other side edge of the main body 12 toward the existing pipe 100, and the center in the height direction of the fourth wall 32a. The ridge 30 is included. The protrusion 30 is a portion that is fitted into the groove 22 of the first fitting portion 24, and the protrusion 30 is formed with a slit 34 that extends in the longitudinal direction and opens outward. Further, a return portion 36 is formed at the tip of the protrusion 30. When the ridge 30 is fitted into the groove 22, the engaging portion 26 and the return portion 36 are engaged, and the fitting portions 24 and 32 are prevented from being detached.

また、第１嵌合部２４および第２嵌合部３２の背面２８上部には、内側方に向かって突出するローラ保持部３８が形成される。ローラ保持部３８は、製管時に第１嵌合部２４および第２嵌合部３２の背面２８側の空間に装着される嵌合ローラ５８（図３参照）が脱落しないようにするための突条であり、また、製管後には、充填材１０４に埋め込まれることによってアンカとしても機能する。さらに、第１嵌合部２４の第２壁２４ｂの条溝２２内面側の側面には、エラストマ等によって帯状に形成される止水部４０が設けられる。止水部４０は、嵌合部２４，３２を嵌合した際に、第１嵌合部２４の第２壁２４ｂと第２嵌合部３２の突条３０の先端との間に挟まり、この間の隙間を埋めて水密性を確保するものである。 In addition, a roller holding portion 38 that protrudes inward is formed on the upper portion of the back surface 28 of the first fitting portion 24 and the second fitting portion 32. The roller holding portion 38 is a protrusion for preventing the fitting roller 58 (see FIG. 3) mounted in the space on the back surface 28 side of the first fitting portion 24 and the second fitting portion 32 from falling off during pipe production. It is a strip, and also functions as an anchor by being embedded in the filler 104 after pipe production. Furthermore, the water stop part 40 formed in strip | belt shape with an elastomer etc. is provided in the side surface by the side of the groove 22 of the 2nd wall 24b of the 1st fitting part 24. As shown in FIG. When the fitting portions 24, 32 are fitted, the water stop portion 40 is sandwiched between the second wall 24 b of the first fitting portion 24 and the tip of the protrusion 30 of the second fitting portion 32, It is intended to secure the water tightness by filling the gap.

このような管路更生部材１０は、製管時には、螺旋状に巻回される。そして、たとえば、製管機５６が備える一対の嵌合ローラ５８が嵌合部２４，３２の背面２８側の空間に装着され、その背面２８が嵌合ローラ２４，３２からの幅方向の押圧を順次受けることによって、嵌合部２４，３２が自動的に嵌合される（つまり、機械製管される）。ただし、ハンマ等を用いて人力により嵌合部２４，３２を嵌合して製管することもできる。 Such a pipe rehabilitation member 10 is spirally wound during pipe production. For example, a pair of fitting rollers 58 included in the pipe making machine 56 are mounted in the space on the back surface 28 side of the fitting portions 24 and 32, and the back surface 28 presses the width direction from the fitting rollers 24 and 32. By sequentially receiving, the fitting portions 24 and 32 are automatically fitted (that is, machined). However, pipes can be manufactured by fitting the fitting portions 24 and 32 manually using a hammer or the like.

以下、図３−図１０を参照して、この発明の管路更生方法の一実施例について説明する。この管路更生方法では、既設管１００内の異物除去および洗浄を行った後、先ず、図３および図４に示すように、既設管１００の内面と更生管１０２の外面との間に隙間５０を空けるようにして、既設管１００内に更生管１０２を設ける。具体的には、図３に示すように、第１立坑（マンホール等）５２側の地上に管路更生部材１０をロール状に巻き付けた更生部材ロール５４を用意すると共に、既設管１００内に製管機５６を搬入する。そして、第１立坑５２から既設管１００内に管路更生部材１０を引き込みながら、既設管１００内で管路更生部材１０を螺旋状に巻回すると共に、製管機５６が備える嵌合ローラ５８を用いて管路更生部材１０の嵌合部２４，３２を幅方向に順次嵌合していくことによって更生管１０２を製管する。この際には、既設管１００の内面に管路更生部材１０を密着させるようにして更生管１０２を製管するのではなく、形成される更生管１０２の外径が既設管１００の内径よりも小さくなるように製管する。すなわち、図４に示すように、既設管１００の内面上部と更生管１０２の外面上部との間に隙間５０を空けた状態となるように製管する。隙間５０頂部の高さ方向の大きさ（管路更生部材１０のリブ１８の先端面から既設管１００の内面までの距離）は、たとえば２０ｍｍに設定される。 Hereinafter, an embodiment of the pipe rehabilitation method of the present invention will be described with reference to FIGS. In this pipe line rehabilitation method, after removing foreign substances in the existing pipe 100 and cleaning, first, as shown in FIGS. 3 and 4, a gap 50 is formed between the inner surface of the existing pipe 100 and the outer surface of the renovated pipe 102. The rehabilitating pipe 102 is provided in the existing pipe 100 so as to open the space. Specifically, as shown in FIG. 3, a rehabilitation member roll 54 in which the pipe rehabilitation member 10 is wound in a roll shape is prepared on the ground on the first shaft (manhole, etc.) 52 side, and manufactured in the existing pipe 100. The pipe machine 56 is carried in. Then, the pipe rehabilitation member 10 is spirally wound in the existing pipe 100 while the pipe rehabilitation member 10 is drawn into the existing pipe 100 from the first shaft 52, and the fitting roller 58 provided in the pipe making machine 56 is provided. The rehabilitated pipe 102 is manufactured by sequentially fitting the fitting parts 24 and 32 of the pipe line rehabilitating member 10 in the width direction. At this time, the rehabilitated pipe 102 is not formed so that the pipe rehabilitation member 10 is brought into close contact with the inner surface of the existing pipe 100, but the outer diameter of the formed regenerated pipe 102 is larger than the inner diameter of the existing pipe 100. Pipes are made to be small. That is, as shown in FIG. 4, the pipe is manufactured so that a gap 50 is left between the upper part on the inner surface of the existing pipe 100 and the upper part on the outer surface of the rehabilitated pipe 102. The size of the top of the gap 50 in the height direction (the distance from the tip end surface of the rib 18 of the pipe rehabilitation member 10 to the inner surface of the existing pipe 100) is set to 20 mm, for example.

既設管１００内に更生管１０２を設けると、次に、径方向に膨張収縮可能な長尺の膨張体６０を第１立坑５２側に用意する。この実施例では、膨張体６０としては、筒状の織物の内面に樹脂またはゴム等で内張り加工を施すこと等によって形成されて、空気や水などによって内圧が加えられたときには筒状に膨張し、内圧が加えられないときには偏平状に収縮する筒状体が用いられる。具体例を挙げると、市販の消防用ホースを膨張体６０として利用するとよい。ただし、筒状（円形等）のまま径方向に膨張収縮する筒状体を膨張体６０として利用することもできる。 If the rehabilitation pipe | tube 102 is provided in the existing pipe 100, the elongate expansion body 60 which can be expanded-contracted to radial direction next will be prepared in the 1st shaft 52 side. In this embodiment, the expansion body 60 is formed by lining the inner surface of a cylindrical fabric with resin or rubber or the like, and expands into a cylindrical shape when an internal pressure is applied by air or water. A cylindrical body that contracts flatly when no internal pressure is applied is used. As a specific example, a commercially available fire hose may be used as the expansion body 60. However, a cylindrical body that expands and contracts in the radial direction with a cylindrical shape (circular shape or the like) can also be used as the expansion body 60.

膨張体６０を用意すると、図５に示すように、隙間５０頂部に収縮状態の膨張体６０を導入する。すなわち、膨張体６０の先頭部分を第２立坑（マンホール等）６２側からウィンチ（図示せず）によって牽引すること等により、更生管１０２の全長に亘るように、膨張体６０を隙間５０に連続的に引き込んでいく。このとき、膨張体６０は収縮状態にあるので、既設管１００の内面と更生管１０２の外面との間の隙間５０が僅かなものであっても、隙間５０に膨張体６０を容易に引き込むことができる。 When the expansion body 60 is prepared, the expansion body 60 in a contracted state is introduced to the top of the gap 50 as shown in FIG. That is, the expansion body 60 is continuously connected to the gap 50 so as to extend over the entire length of the rehabilitation pipe 102 by pulling the leading portion of the expansion body 60 from the second shaft (manhole or the like) 62 side by a winch (not shown). Pull in. At this time, since the expansion body 60 is in a contracted state, even if the gap 50 between the inner surface of the existing pipe 100 and the outer surface of the rehabilitation pipe 102 is small, the expansion body 60 can be easily drawn into the gap 50. Can do.

次に、図６に示すように、膨張体６０に空気や水などで内圧をかけて膨張体６０を膨張させ、この膨張体６０によって更生管１０２を既設管１００の底部に押し付ける。この際には、更生管１０２の下半部全体が既設管１００の内面に密着するように、膨張体６０によって更生管１０２を押し下げることが好ましい。膨張時の膨張体６０の高さ方向の大きさは、たとえば５０ｍｍに設定される。 Next, as shown in FIG. 6, the expansion body 60 is inflated by applying an internal pressure to the expansion body 60 with air or water, and the rehabilitation pipe 102 is pressed against the bottom of the existing pipe 100 by the expansion body 60. At this time, it is preferable to push down the rehabilitation pipe 102 by the expansion body 60 so that the entire lower half of the rehabilitation pipe 102 is in close contact with the inner surface of the existing pipe 100. The size in the height direction of the expansion body 60 at the time of expansion is set to 50 mm, for example.

続いて、図７に示すように、膨張状態の膨張体６０によって更生管１０２を既設管１００に押し付けた状態で、膨張体６０の両側の隙間５０に充填材注入ホース６４を導入する。そして、この２本の充填材注入ホース６４を用いて、既設管１００の内面と更生管１０２の外面との間の下部分に対して、管軸方向の全長に亘るように充填材１０４を注入する。この際には、更生管１０２の下半部、たとえば更生管１０２の周囲の４−７割程度に充填材１０４が充填された状態にするとよい。なお、充填材１０４は、更生管１０２（管路更生部材１０）の裏面側に形成されるリブ１８間の空隙や嵌合部２４，３２とリブ１８との間の空隙を通って周方向に流れる。このように、膨張体６０によって更生管１０２を押え付けた状態で充填材１０４を注入することにより、注入した充填材１０４による更生管１０２の浮き上がりは防止される。 Subsequently, as shown in FIG. 7, the filler injection hose 64 is introduced into the gap 50 on both sides of the expansion body 60 in a state where the rehabilitation pipe 102 is pressed against the existing pipe 100 by the expansion body 60 in the expansion state. Then, using these two filling material injection hoses 64, the filling material 104 is injected over the entire length in the tube axis direction into the lower portion between the inner surface of the existing tube 100 and the outer surface of the rehabilitation tube 102. To do. In this case, it is preferable that the filler 104 is filled in the lower half of the rehabilitation pipe 102, for example, about 4 to 70% around the rehabilitation pipe 102. In addition, the filler 104 is circumferentially passed through the gap between the ribs 18 formed on the back surface side of the rehabilitation pipe 102 (pipeline renewal member 10) and the gap between the fitting portions 24 and 32 and the rib 18. Flowing. In this way, by injecting the filler 104 in a state where the rehabilitation pipe 102 is pressed by the expansion body 60, the rehabilitation pipe 102 is prevented from being lifted by the injected filler 104.

既設管１００の内面と更生管１０２の外面との間の下部分への充填材１０４の注入が終了すると、充填材注入ホース６４を隙間５０から引き抜き、注入した充填材１０４が固化するのを待つ。そして、図８に示すように、充填材１０４が固化することによって、更生管１０２の下部が既設管１００の底部に密着した状態で固定されると、膨張体６０の内圧を開放して膨張体６０を収縮させ、隙間５０から膨張体６０を抜き取る。この際、更生管１０２の下半部を既設管１００の内面に密着させて固定しておくことにより、更生管１０２の形状は、膨張体６０を抜き取ってもほぼそのまま維持される（押し下げられた状態のままとなる）。 When the filling material 104 is injected into the lower part between the inner surface of the existing pipe 100 and the outer surface of the rehabilitation pipe 102, the filling material injection hose 64 is pulled out from the gap 50 and waits for the injected filling material 104 to solidify. . Then, as shown in FIG. 8, when the lower part of the rehabilitation pipe 102 is fixed in close contact with the bottom of the existing pipe 100 by the solidification of the filler 104, the internal pressure of the expansion body 60 is released to expand the expansion body. 60 is contracted and the expansion body 60 is extracted from the gap 50. At this time, by fixing the lower half of the rehabilitation pipe 102 to the inner surface of the existing pipe 100 and fixing it, the shape of the rehabilitation pipe 102 is maintained almost as it is even if the expansion body 60 is pulled out (pressed down). Will remain in the state).

続いて、図９に示すように、隙間５０頂部に充填材注入ホース６４を導入する。そして、この充填材注入ホース６４を用いて既設管１００の内面と更生管１０２の外面との間の上部分、つまり残った空隙に充填材１０４をさらに注入し、既設管１００の内面と更生管１０２の外面との間の空隙全てが充填材１０４で満たされた状態にする。この工程で注入した充填材１０４が固化することにより、既設管１００と更生管１０２とが完全に一体化されて、既設管１００の更生作業が終了する。すなわち、図１および図１０に示すような更生管路が完成する。このように、更生管１０２の全周に亘るように充填材１０４を充填することによって、更生管１０２を既設管１００に対してより確実に固定することができる。また、既設管１００と更生管１０２とが完全に一体化することによって、更生管１０２の強度が向上する。 Subsequently, as shown in FIG. 9, a filler injection hose 64 is introduced at the top of the gap 50. Then, the filler 104 is further injected into the upper portion between the inner surface of the existing pipe 100 and the outer surface of the rehabilitated pipe 102 using this filler injection hose 64, that is, the remaining gap, and the inner surface of the existing pipe 100 and the rehabilitated pipe. All the gaps between the outer surfaces of 102 are filled with the filler 104. By solidifying the filler 104 injected in this step, the existing pipe 100 and the rehabilitated pipe 102 are completely integrated, and the rehabilitation work of the existing pipe 100 is completed. That is, the rehabilitation pipeline as shown in FIGS. 1 and 10 is completed. In this way, the rehabilitation pipe 102 can be more securely fixed to the existing pipe 100 by filling the filling material 104 over the entire circumference of the rehabilitation pipe 102. Moreover, the strength of the rehabilitation pipe | tube 102 improves because the existing pipe | tube 100 and the renovation pipe | tube 102 integrate completely.

この実施例によれば、膨張体６０を利用することによって、既設管１００に対して予めスペーサを設置することなく、既設管１００の内面と更生管１０２の外面との間に充填材１０４を注入して更生管１０２を既設管１００に固定することができ、かつ充填材１０４による更生管１０２の浮上を防止できる。すなわち、スペーサを既設管１００の内面にアンカボルト等で固定する作業を省略できるので、スペーサの取り付けにかかる時間を短縮できると共に、人力による管内での作業が軽減されて、より安全な工法に近づく。また、既設管１００の内面と更生管１０２の外面との間に隙間５０を空けるように更生管１０２を設ける、つまり隙間製管で更生管１０２に自由度を持たせることで、既設管１００の曲所（段差部や屈曲部など）での更生管１０２の追従性が向上し、非定常の人力作業を減らすことができるので、更生管１０２の製管の自動化が容易となる。したがって、この実施例は、施工性に優れる。 According to this embodiment, by using the expansion body 60, the filler 104 is injected between the inner surface of the existing tube 100 and the outer surface of the rehabilitated tube 102 without previously installing a spacer with respect to the existing tube 100. Thus, the rehabilitation pipe 102 can be fixed to the existing pipe 100, and the rehabilitation pipe 102 can be prevented from floating by the filler 104. That is, since the work of fixing the spacer to the inner surface of the existing pipe 100 with an anchor bolt or the like can be omitted, the time required for attaching the spacer can be shortened, and the work in the pipe by human power can be reduced to approach a safer construction method. . Further, the rehabilitating pipe 102 is provided so as to leave a gap 50 between the inner surface of the existing pipe 100 and the outer surface of the rehabilitated pipe 102, that is, the rehabilitating pipe 102 is given a degree of freedom by gap pipe making. Since the followability of the rehabilitated pipe 102 at a corner (stepped part, bent part, etc.) is improved and unsteady human power work can be reduced, it is easy to automate the production of the rehabilitated pipe 102. Therefore, this embodiment is excellent in workability.

また、膨張体６０によって更生管１０２を押し下げて既設管１００の底部に密着させ、その状態で更生管１０２を既設管１００に固定することによって、管底部の段差の発生を最小限に抑えられると同時に、管頂部の厚みが確保された強度に優れた更生管１０２とすることが可能である。 Further, when the rehabilitation pipe 102 is pushed down by the expansion body 60 to be brought into close contact with the bottom of the existing pipe 100 and the rehabilitation pipe 102 is fixed to the existing pipe 100 in this state, the occurrence of a step at the bottom of the pipe can be minimized. At the same time, it is possible to obtain a rehabilitated tube 102 having excellent strength with a sufficient thickness at the top of the tube.

なお、上述の実施例では、既設管１００の内面と更生管１０２の外面との間の下部分に充填材１０４を注入する際に、２本の充填材注入ホース６４を用いるようにしたが、膨張体６０の片側の隙間５０に導入した１本の充填材注入ホース６４を用いて充填材１０４を注入することもできる。 In the above-described embodiment, when the filler 104 is injected into the lower portion between the inner surface of the existing pipe 100 and the outer surface of the rehabilitation pipe 102, the two filler injection hoses 64 are used. The filler 104 can also be injected using one filler injection hose 64 introduced into the gap 50 on one side of the expansion body 60.

また、上述の実施例では、更生管１０２の全周に亘るように充填材１０４を注入するようにしたが、必ずしも全周に亘るように充填材１０４を注入する必要はない。たとえば、更生管１０２自体が自立管としての強度を有するものであれば、更生管１０２は既設管１００に固定されるだけでよい。したがって、既設管１００の内面と更生管１０２の外面との間の下部分に充填材１０４を注入する工程、つまり更生管１０２の下部を既設管１００の底部に固定した図８に示すような状態で既設管１００の更生作業を終了してもよい。この場合は、空いたスペース（隙間５０）に他の小径管を配管する等して有効活用することも可能である。 In the above-described embodiment, the filler 104 is injected over the entire circumference of the rehabilitation pipe 102. However, it is not always necessary to inject the filler 104 over the entire circumference. For example, if the rehabilitation pipe 102 itself has strength as a self-supporting pipe, the rehabilitation pipe 102 only needs to be fixed to the existing pipe 100. Accordingly, the step of injecting the filler 104 into the lower part between the inner surface of the existing pipe 100 and the outer surface of the rehabilitated pipe 102, that is, the state shown in FIG. 8 where the lower part of the rehabilitated pipe 102 is fixed to the bottom of the existing pipe 100. Thus, the rehabilitation work of the existing pipe 100 may be terminated. In this case, it is possible to effectively utilize other small-diameter pipes or the like in the vacant space (gap 50).

次に、図１１−図１４を参照して、この発明の管路更生方法の他の実施例について説明する。この管路更生方法では、図３−図１０に示す管路更生方法と比較して、既設管１００の内面と更生管１０２の外面との間の下部分に充填材１０４を注入する工程の後に、強度部材６６を導入する工程をさらに含むことが異なる。その他の工程については、図３−図１０に示す管路更生方法と同様であるので、それらの工程の説明は省略または簡略化し、強度部材６６の導入工程を中心に説明することとする。 Next, another embodiment of the pipe line rehabilitation method of the present invention will be described with reference to FIGS. In this pipe rehabilitation method, as compared with the pipe rehabilitation method shown in FIGS. 3 to 10, after the step of injecting the filler 104 into the lower part between the inner surface of the existing pipe 100 and the outer surface of the rehabilitation pipe 102. The method further includes a step of introducing the strength member 66. Since the other steps are the same as those in the pipe rehabilitation method shown in FIGS. 3 to 10, the description of these steps will be omitted or simplified, and the introduction of the strength member 66 will be mainly described.

この実施例では、既設管１００の内面と更生管１０２の外面との間の下部分に充填材１０４を注入し、更生管１０２の下部を既設管１００の底部に密着した状態で固定した後（つまり図８に示すような状態とした後）、図１１に示すように、既設管１００の内面と更生管１０２の外面との間の隙間５０に一連の強度部材６６を連続的に導入する。具体的には、先ず、第１立坑５２側に、長尺の帯状に形成したパンチングメタル（帯状部材）６８をロール状に巻き付けたパンチングメタルロール７０と、パンチングメタル７０を所定形状に変形して強度部材６６を成形するための成形機７２とを用意する。 In this embodiment, the filler 104 is injected into the lower part between the inner surface of the existing pipe 100 and the outer surface of the rehabilitated pipe 102, and after fixing the lower part of the rehabilitated pipe 102 in close contact with the bottom of the existing pipe 100 ( That is, after a state as shown in FIG. 8), as shown in FIG. 11, a series of strength members 66 are continuously introduced into the gap 50 between the inner surface of the existing pipe 100 and the outer surface of the renovated pipe 102. Specifically, first, on the first shaft 52 side, a punching metal roll 70 in which a punching metal (band member) 68 formed in a long strip shape is wound in a roll shape, and the punching metal 70 is deformed into a predetermined shape. A molding machine 72 for molding the strength member 66 is prepared.

成形機７２は、ローラプレス等によって強度部材６６を成形するものであり、図１２に示すように、この成形機７２にパンチングメタル６８を通すことによって、複数の孔７４を有する長尺の強度部材６６が成形される。この実施例では、強度部材６６は、断面円弧状に形成され、その両側部は曲率が大きくされている。 The forming machine 72 forms the strength member 66 by a roller press or the like. As shown in FIG. 12, by passing a punching metal 68 through the forming machine 72, a long strength member having a plurality of holes 74 is formed. 66 is formed. In this embodiment, the strength member 66 is formed in a circular arc shape in cross section, and the curvature is increased on both sides thereof.

図１１に戻って、パンチングメタルロール７０および成形機７２を第１立坑５２側に設置すると、続いて、成形機７２によってパンチングメタル６８を変形して強度部材６６を成形しつつ、強度部材６６の先頭に取り付けた先導治具７６を第２立坑（マンホール等）６２側からウィンチ７８等によって牽引することにより、隙間５０に長尺の強度部材６６を連続的に引き込んでいく。隙間５０に導入された強度部材６６は、更生管１０２の上に戴置されて安定するため、既設管１００の内面や更生管１０２の外面などにアンカボルト等で特に固定する必要はない。なお、ウィンチ７８で強度部材６６を隙間５０に引き込む代わりに、強度部材６６の先頭部分に駆動機（図示せず）を設け、この駆動機に更生管１０２上を自走させることによって、強度部材６６を隙間５０に導入することもできる。 Returning to FIG. 11, when the punching metal roll 70 and the molding machine 72 are installed on the first shaft 52 side, the punching metal 68 is deformed by the molding machine 72 to form the strength member 66. By pulling the leading jig 76 attached to the top from the second shaft (manhole or the like) 62 side by the winch 78 or the like, the long strength member 66 is continuously drawn into the gap 50. Since the strength member 66 introduced into the gap 50 is placed on the rehabilitation pipe 102 and is stabilized, it is not necessary to fix the strength member 66 to the inner surface of the existing pipe 100 or the outer surface of the rehabilitation pipe 102 with an anchor bolt or the like. Instead of pulling the strength member 66 into the gap 50 with the winch 78, a driving machine (not shown) is provided at the leading portion of the strength member 66, and the driving machine is self-propelled on the rehabilitation pipe 102, whereby the strength member 66 66 can also be introduced into the gap 50.

強度部材６６の導入工程が終了すると、続いて、図１３に示すように、強度部材６６を導入した後に残る隙間５０に対して充填材注入ホース６４を導入する。そして、この充填材注入ホース６４を用いて既設管１００の内面と更生管１０２の外面との間の残った空隙に充填材１０４をさらに注入する。この工程で注入した充填材１０４が固化することにより、既設管１００と更生管１０２とが完全に一体化されて、既設管１００の更生作業が終了する。すなわち、充填材１０４内に強度部材６６が埋め込まれた図１４に示すような更生管路が完成する。 When the introduction process of the strength member 66 is completed, subsequently, as shown in FIG. 13, the filler injection hose 64 is introduced into the gap 50 remaining after the strength member 66 is introduced. Then, the filler 104 is further injected into the remaining space between the inner surface of the existing pipe 100 and the outer surface of the renovated pipe 102 using the filler injection hose 64. By solidifying the filler 104 injected in this step, the existing pipe 100 and the rehabilitated pipe 102 are completely integrated, and the rehabilitation work of the existing pipe 100 is completed. That is, the rehabilitation pipeline as shown in FIG. 14 in which the strength member 66 is embedded in the filler 104 is completed.

図１１−１４に示す実施例によれば、図３−図１０に示す実施例と同様の効果を奏する上、充填材１０４が強度部材６６によって補強されるので、更生管１０２の強度をより向上させることができる。 According to the embodiment shown in FIGS. 11-14, the same effect as in the embodiment shown in FIGS. 3-10 can be obtained, and the filler 104 is reinforced by the strength member 66, so that the strength of the rehabilitation pipe 102 is further improved. Can be made.

また、強度部材６６の成形材料となる長尺のパンチングメタル７０をロール状にして施工現場に搬送し、施工現場で必要な形状に変形して強度部材６６を成形するので、強度部材６６の輸送費および加工費のコストダウンを図ることができる。 In addition, since the long punching metal 70, which is a molding material for the strength member 66, is formed into a roll and transported to the construction site and deformed into a required shape at the construction site, the strength member 66 is molded. Costs and processing costs can be reduced.

なお、図１１−１４に示す実施例では、長尺の強度部材６６を成形しつつ、成形した強度部材６６を連続的に隙間５０に導入するようにしたが、図１５−図１８に示す実施例のように、短尺の強度部材６６を連結しつつ、連結して一連となった強度部材６６を連続的に隙間５０に導入することもできる。以下、図１５−図１８を参照して具体的に説明するが、上述の説明と重複する部分については、説明を省略或いは簡略化する。 In the embodiment shown in FIGS. 11-14, while the long strength member 66 is formed, the formed strength member 66 is continuously introduced into the gap 50. However, the embodiment shown in FIGS. As in the example, while connecting the short strength members 66, the connected strength members 66 can be continuously introduced into the gap 50. Hereinafter, specific description will be given with reference to FIGS. 15 to 18, but the description overlapping with the above description will be omitted or simplified.

この実施例では、既設管１００の内面と更生管１０２の外面との間の下部分に充填材１０４を注入し、更生管１０２の下部を既設管１００の底部に密着した状態で固定した後、隙間５０に一連の強度部材６６を連続的に導入するに際して、先ず、第１立坑５２側に、図１５に示すような短尺の強度部材６６を複数用意する。 In this embodiment, the filler 104 is injected into the lower part between the inner surface of the existing pipe 100 and the outer surface of the rehabilitated pipe 102, and the lower part of the rehabilitated pipe 102 is fixed in close contact with the bottom of the existing pipe 100. When continuously introducing a series of strength members 66 into the gap 50, first, a plurality of short strength members 66 as shown in FIG. 15 are prepared on the first shaft 52 side.

図１５を参照して、この強度部材６６は、互いに連結されることによって長尺体とされるものであり、パンチングメタル等を所定形状に加工することによって形成される。具体的には、強度部材６６は、平板状の中央部８０ａ、中央部８０ａの両側縁から立ち上がる縦壁８０ｂ、および中央部８０ａの両側縁から斜め下方向に延出する翼部８０ｃを備え、その全体に複数の孔７４が分散形成される。また、縦壁８０ｂには、自由回転可能な４つの車輪８２が設けられる。強度部材６６の軸方向の大きさは、たとえば１２００ｍｍであり、その幅方向（周方向）の大きさは、たとえば５００ｍｍである。 Referring to FIG. 15, the strength member 66 is formed into an elongated body by being connected to each other, and is formed by processing a punching metal or the like into a predetermined shape. Specifically, the strength member 66 includes a flat central portion 80a, a vertical wall 80b rising from both side edges of the central portion 80a, and a wing portion 80c extending obliquely downward from both side edges of the central portion 80a. A plurality of holes 74 are formed in a distributed manner over the entirety. The vertical wall 80b is provided with four wheels 82 that can freely rotate. The size of the strength member 66 in the axial direction is, for example, 1200 mm, and the size in the width direction (circumferential direction) is, for example, 500 mm.

なお、図１５に示す例では、強度部材６６に対して、既設管１００の内面側を転がるように車輪８２を設けているが、更生管１０２の外面側を転がるように車輪８２を設けることもできるし、その双方を転がるように車輪８２を設けることもできる。後述する強度部材６６の他の例に対して車輪８２を設ける場合も同様である。 In the example shown in FIG. 15, the wheel 82 is provided so as to roll on the inner surface side of the existing pipe 100 with respect to the strength member 66, but the wheel 82 may be provided so as to roll on the outer surface side of the rehabilitated pipe 102. It is possible to provide the wheels 82 so as to roll both of them. The same applies to the case where the wheel 82 is provided for another example of the strength member 66 described later.

第１立坑５２側に複数の強度部材６６を用意すると、続いて、図１６に示すように、第１立坑５２側の地上において、鎖やワイヤなどの連結具を用いて先行する強度部材６６に後続する強度部材６６を順次連結しつつ、連結して一連となった強度部材６６の先頭に取り付けた先導治具７６を第２立坑６２側からウィンチ７８等によって牽引することにより、隙間５０に強度部材６６を連続的に引き込んでいく。隙間５０に導入された強度部材６６は、更生管１０２の上に戴置されて安定するため、既設管１００の内面や更生管１０２の外面などにアンカボルト等で特に固定する必要はない。 When a plurality of strength members 66 are prepared on the first shaft 52 side, subsequently, on the ground on the first shaft 52 side, the preceding strength member 66 is connected to the preceding strength member 66 using a coupling tool such as a chain or a wire. By sequentially connecting the subsequent strength members 66 and pulling the leading jig 76 attached to the head of the strength members 66 that are connected to each other by the winch 78 or the like from the second shaft 62 side, the strength of the gap 50 is increased. The member 66 is continuously drawn. Since the strength member 66 introduced into the gap 50 is placed on the rehabilitation pipe 102 and is stabilized, it is not necessary to fix the strength member 66 to the inner surface of the existing pipe 100 or the outer surface of the rehabilitation pipe 102 with an anchor bolt or the like.

強度部材６６の導入工程が終了すると、続いて、図１７に示すように、強度部材６６を導入した後に残る隙間５０に対して充填材注入ホース６４を導入する。そして、この充填材注入ホース６４を用いて既設管１００の内面と更生管１０２の外面との間の残った空隙に充填材１０４をさらに注入する。この工程で注入した充填材１０４が固化することにより、既設管１００と更生管１０２とが完全に一体化されて、既設管１００の更生作業が終了する。すなわち、充填材１０４内に強度部材６６が埋め込まれた図１８に示すような更生管路が完成する。 When the introduction process of the strength member 66 is finished, subsequently, as shown in FIG. 17, the filler injection hose 64 is introduced into the gap 50 remaining after the strength member 66 is introduced. Then, the filler 104 is further injected into the remaining space between the inner surface of the existing pipe 100 and the outer surface of the renovated pipe 102 using the filler injection hose 64. By solidifying the filler 104 injected in this step, the existing pipe 100 and the rehabilitated pipe 102 are completely integrated, and the rehabilitation work of the existing pipe 100 is completed. That is, the rehabilitation pipeline as shown in FIG. 18 in which the strength member 66 is embedded in the filler 104 is completed.

図１５−図１８に示す実施例においても、図３−図１０に示す実施例と同様の効果を奏する上、充填材１０４が強度部材６６によって補強されるので、更生管１０２の強度をより向上させることができる。 Also in the embodiment shown in FIGS. 15 to 18, the same effect as in the embodiment shown in FIGS. 3 to 10 can be obtained, and the filler 104 is reinforced by the strength member 66, so that the strength of the rehabilitation pipe 102 is further improved. Can be made.

また、強度部材６６に車輪８２を設けたので、強度部材６６の隙間５０への導入抵抗が低減される。また、既設管１００の内面や更生管１０２の外面に凹凸がある場合でも、それに引っ掛かることなく乗り越えることが容易となる。 Further, since the wheel 82 is provided on the strength member 66, the resistance to introduce the strength member 66 into the gap 50 is reduced. Moreover, even when the inner surface of the existing pipe 100 and the outer surface of the rehabilitated pipe 102 are uneven, it is easy to get over without being caught.

なお、図１１−図１８に示す各実施例では、隙間５０への導入前に施工現場において、長尺のパンチングメタル６４を変形する、或いは短尺の強度部材６６を連結することによって長尺の強度部材６６を形成するようにしたが、予め成形した長尺の強度部材６６を施工現場に搬送して、それをそのまま連続的に隙間５０に導入することもできる。この場合には、たとえば、図１９に示すような強度部材６６を用いることができる。図１９を参照して、強度部材６６は、ポリエチレン等の合成樹脂によって長尺の角筒状に形成され、その側壁８４ａおよび天壁８４ｂには、複数の孔７４が形成される。また、底壁８４ｃには、カーボン板などの補強材８６が埋め込まれる。このような長尺の強度部材６６は、ドラム（図示せず）等にロール状に巻き付けた状態で施工現場に搬送するとよい。これにより、強度部材６６の輸送費を低減でき、強度部材６６の隙間５０への導入工程（成形作業）も簡略化される。 In each of the embodiments shown in FIG. 11 to FIG. 18, the long punching metal 64 is deformed or the long strength member 66 is connected at the construction site before introduction into the gap 50. Although the member 66 is formed, it is also possible to convey a long strength member 66 formed in advance to the construction site and continuously introduce it into the gap 50 as it is. In this case, for example, a strength member 66 as shown in FIG. 19 can be used. Referring to FIG. 19, the strength member 66 is formed in a long rectangular tube shape with a synthetic resin such as polyethylene, and a plurality of holes 74 are formed in the side wall 84 a and the top wall 84 b. A reinforcing material 86 such as a carbon plate is embedded in the bottom wall 84c. Such a long strength member 66 may be transported to a construction site in a state of being wound around a drum (not shown) or the like. Thereby, the transportation cost of the strength member 66 can be reduced, and the introduction process (molding operation) of the strength member 66 into the gap 50 is simplified.

また、１つの強度部材６６を隙間５０に導入するだけでなく、２つ以上の強度部材６６を隙間５０に導入することもできる。たとえば、図２０に示すように、溝形の強度部材６６と平板状の強度部材６６とを用意する。そして、これらを順に隙間５０に導入した後、強度部材６６を導入した後に残る隙間５０に対して充填材注入ホース６４を導入し、充填材１０４をさらに注入する。これにより、充填材１０４内に２つの強度部材６６が埋め込まれた図２１に示すような更生管路が完成する。この際、各強度部材６６は、予め長尺に形成されていてもよいし、短尺に形成されて連結されるものであってもよい。また、車輪８４を適宜備えていてもよい。２つ以上の強度部材６６を設けることによって、更生管１０２の強度をより向上させることができる。 Further, not only one strength member 66 can be introduced into the gap 50, but also two or more strength members 66 can be introduced into the gap 50. For example, as shown in FIG. 20, a groove-shaped strength member 66 and a plate-shaped strength member 66 are prepared. Then, after sequentially introducing these into the gap 50, the filler injection hose 64 is introduced into the gap 50 remaining after the strength member 66 is introduced, and the filler 104 is further injected. Thereby, the rehabilitation pipe line as shown in FIG. 21 in which the two strength members 66 are embedded in the filler 104 is completed. At this time, each strength member 66 may be formed in a long shape in advance, or may be formed in a short shape and connected. Moreover, you may provide the wheel 84 suitably. By providing two or more strength members 66, the strength of the rehabilitation pipe 102 can be further improved.

なお、強度部材６６は、既設管１００の内面と更生管１０２の外面との間の隙間５０に連続的に導入でき、かつ充填材注入ホース６４を導入するための隙間５０を残すことができるものであれば、その具体的形状は、上述の各実施例に示す態様に限定されず、適宜変更可能である。 The strength member 66 can be continuously introduced into the gap 50 between the inner surface of the existing pipe 100 and the outer surface of the rehabilitation pipe 102, and can leave the gap 50 for introducing the filler injection hose 64. If so, the specific shape is not limited to the embodiment shown in each of the above-described embodiments, and can be changed as appropriate.

さらに、管路更生部材１０の具体的形状は、既設管１００との間に隙間５０を空けて更生管１００を形成できるものであれば、特に限定されない。たとえば、嵌合部２４，３２の嵌合構造を変更することもできるし、嵌合部２４，３２を管径方向に嵌合するタイプの管路更生部材１０を用いることもできる。 Furthermore, the specific shape of the pipe rehabilitation member 10 is not particularly limited as long as the rehabilitation pipe 100 can be formed with a gap 50 between the pipe rehabilitation member 10 and the existing pipe 100. For example, the fitting structure of the fitting parts 24 and 32 can be changed, and the pipe line rehabilitation member 10 of a type that fits the fitting parts 24 and 32 in the pipe radial direction can also be used.

また、上述の各実施例では、既設管１００内に更生管１０２を設ける際に、帯状の管路更生部材１０を既設管１００内で螺旋状に巻回して製管するようにしたが、これに限定されず、塩化ビニルやＦＲＰ(繊維強化プラスチック)などの予め管状に形成された更生管１０２を折り畳んだり扁平にするなどして既設管１００内に導入して拡径したり反転したりすることによって、既設管１００内に更生管１０２を設けるようにしてもよい。また、更生管１０２を円形のまま既設管１００内に導入するようにしてもよい。 In each of the above-described embodiments, when the rehabilitation pipe 102 is provided in the existing pipe 100, the strip-shaped pipe rehabilitation member 10 is spirally wound in the existing pipe 100 to form a pipe. However, the rehabilitation pipe 102 formed in a tubular shape, such as vinyl chloride or FRP (fiber reinforced plastic), is introduced into the existing pipe 100 by being folded or flattened to expand or reverse the diameter. Accordingly, the rehabilitated pipe 102 may be provided in the existing pipe 100. Further, the rehabilitation pipe 102 may be introduced into the existing pipe 100 in a circular shape.

さらに、上述の実施例では膨張体６０を更生管１０２の外面と既設管１００の内面との間の隙間５０に導入する際に、膨張体６０を扁平にした状態で導入し（図５）、その後膨張体６０を膨張させ、この膨張体６０によって更生管１０２を既設管１００の底部に押し付ける（図６）ようにしている。このとき、膨張体６０によって更生管１０２を既設管１００の底部に押し付ける際、図６などに示すように更生管１０２が変形するほど押さえつける必要はなく、充填材注入時に更生管１０２が浮上するのを防止できればよい。このような場合、図２２に示すように比較的小径の更生管１０２を既設管１００に導入しまたは形成し、収縮状態の膨張体６０を上記の隙間５０に導入し、その後、図２３に示すように膨張体６０を膨張させるが、膨張させた後の膨張体６０の外径Ｈ２が隙間５０の高さＨ１と等しいかほぼ等しくなるように設定する。つまり、Ｈ１＝Ｈ２またはＨ１≒Ｈ２（Ｈ１＞Ｈ２またはＨ１＜Ｈ２）とする。そうすれば、膨張体６０を膨張された状態も、更生管１０２の変形は小さい。この場合でも、膨張体６０は更生管１０２の浮上防止の機能は果たせる。 Furthermore, in the above-described embodiment, when the expansion body 60 is introduced into the gap 50 between the outer surface of the rehabilitation pipe 102 and the inner surface of the existing pipe 100, the expansion body 60 is introduced in a flat state (FIG. 5), Thereafter, the expansion body 60 is expanded, and the rehabilitation pipe 102 is pressed against the bottom of the existing pipe 100 by the expansion body 60 (FIG. 6). At this time, when the rehabilitation pipe 102 is pressed against the bottom of the existing pipe 100 by the expansion body 60, it is not necessary to press the rehabilitation pipe 102 so as to deform as shown in FIG. It is only necessary to prevent this. In such a case, as shown in FIG. 22, a relatively small-diameter rehabilitation pipe 102 is introduced or formed in the existing pipe 100, and the contracted expansion body 60 is introduced into the gap 50, and then shown in FIG. The expansion body 60 is expanded as described above, but the expansion body 60 after the expansion is set so that the outer diameter H2 of the expansion body 60 is equal to or substantially equal to the height H1 of the gap 50. That is, H1 = H2 or H1≈H2 (H1> H2 or H1 <H2). By doing so, the deformation of the rehabilitation tube 102 is small even when the expansion body 60 is expanded. Even in this case, the expansion body 60 can perform the function of preventing the rehabilitation pipe 102 from floating.

図２２および図２３の実施例は、上述の実施例ように更生管１０２を管路構成部材１０を螺旋状に巻回して作成する更生方法にも適用できるが、特に、塩化ビニルやＦＲＰなどで予め管状に形成された更生管１０２を折り畳んだり扁平にするなどして既設管１００内に導入する場合に好適する。 The embodiment shown in FIGS. 22 and 23 can also be applied to a rehabilitation method in which the rehabilitation pipe 102 is formed by spirally winding the pipe line constituting member 10 as in the above-described embodiments. It is suitable for the case where the rehabilitated tube 102 formed in a tubular shape is introduced into the existing tube 100 by folding or flattening.

なお、上で挙げた寸法などの具体的数値はいずれも単なる一例であり、製品の仕様などの必要に応じて適宜変更可能である。 It should be noted that the specific numerical values such as the dimensions given above are merely examples, and can be appropriately changed according to necessity such as product specifications.

１０ …管路更生部材
５０ …隙間
５６ …製管機
６０ …膨張体
６４ …充填材注入ホース
６６ …強度部材
１００ …既設管
１０２ …更生管
１０４ …充填材 DESCRIPTION OF SYMBOLS 10 ... Pipe line renovation member 50 ... Gap 56 ... Pipe making machine 60 ... Expanding body 64 ... Filler injection hose 66 ... Strength member 100 ... Existing pipe 102 ... Rehabilitation pipe 104 ... Filler

Claims

（ａ）既設管の内面と更生管の外面との間に隙間を空けるようにして前記既設管内に前記更生管を設け、
（ｂ）前記更生管の全長に亘るように収縮状態の膨張体を前記隙間に導入し、
（ｃ）前記膨張体を膨張させ、当該膨張体によって前記更生管を前記既設管の底部に押し付け、
（ｄ）充填材注入ホースを用いて前記隙間から前記既設管の内面と前記更生管の外面との間の下部分に充填材を注入し、
（ｅ）前記充填材が固化した後、前記膨張体を収縮させて前記隙間から抜き取る、管路更生方法。 (A) providing the rehabilitation pipe in the existing pipe so as to leave a gap between the inner surface of the existing pipe and the outer surface of the rehabilitation pipe;
(B) introducing a contracted expanded body into the gap so as to extend over the entire length of the rehabilitation pipe;
(C) Inflating the expansion body, pressing the rehabilitation pipe against the bottom of the existing pipe by the expansion body,
(D) Injecting filler into the lower part between the inner surface of the existing pipe and the outer surface of the rehabilitated pipe from the gap using the filler injection hose;
(E) A pipe rehabilitation method in which, after the filler is solidified, the expansion body is contracted and extracted from the gap.

（ｆ）前記ステップ（ｅ）の後、充填材注入ホースを用いて前記隙間から前記既設管の内面と前記更生管の外面との間に残った空隙に充填材をさらに注入する、請求項１記載の管路更生方法。 (F) After the step (e), the filler is further injected into the gap remaining between the inner surface of the existing pipe and the outer surface of the renovated pipe from the gap using a filler injection hose. The described pipeline rehabilitation method.

（ｇ）前記ステップ（ｅ）の後であって前記ステップ（ｆ）の前に、前記隙間に一連の強度部材を連続的に導入する、請求項２記載の管路更生方法。 (G) The pipeline rehabilitation method according to claim 2, wherein a series of strength members are continuously introduced into the gap after the step (e) and before the step (f).