JP5091172B2 - Drainage pipe rehabilitation method - Google Patents

Drainage pipe rehabilitation method Download PDF

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JP5091172B2
JP5091172B2 JP2009038360A JP2009038360A JP5091172B2 JP 5091172 B2 JP5091172 B2 JP 5091172B2 JP 2009038360 A JP2009038360 A JP 2009038360A JP 2009038360 A JP2009038360 A JP 2009038360A JP 5091172 B2 JP5091172 B2 JP 5091172B2
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pipe
drainage
lining tube
main pipe
rehabilitation method
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JP2010190411A (en
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智裕 廣田
幸文 久保
努 高橋
理 飛松
保 沢田
俊博 草場
義則 久保田
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Tosetz Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a regeneration method of a drainage pipe requiring generation of air flow inside the pipe, which allows the construction object to obtain sufficient wind speed for the construction quality and allows quick and inexpensive construction. <P>SOLUTION: The construction object is the drainage pipe equipped with a vertical main pipe P1 vertically penetrating floors and lateral branch pipes P11 provided for respective floors and connected to the vertical main pipe P1 at the lower ends. The lateral branch pipes P11 provided for the respective floors are communicated with a ventilation pipe provided along the vertical main pipe P1. A lining tube 12 is inserted into the ventilation pipe, and a diameter of the lining tube 12 is extended to make the tube 12 stick to an inner surface of the ventilation pipe, which blocks the communication between the ventilation pipe and the lateral branch pipes 11. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明は、多層階集合住宅等に配備される排水管を更生修理するための工法に関するものである。   The present invention relates to a construction method for rehabilitating and repairing drain pipes installed in multi-story apartment buildings.

多層階集合住宅の排水管は、階層を縦に貫通する立て主管と、各階に配備されて前記立て主管に下流端が繋がっている横枝管を備えており、この横枝管が枝分かれして各階における洗面器,流し台,浴室,浴槽等の雑排水器の排水口に繋がっている。また、洗面器,流し台,浴室,浴槽等の雑排水器はトイレの便器に繋がる汚水管とは別系統の排水管になっており、雑排水用の立て主管と汚水用の立て主管の下端がそれぞれ建物横引き本管に繋がって、その下流端が外部桝を介して道路下の下水路に繋がっている。   The drainage pipe of the multi-story apartment building includes a standing main pipe that vertically penetrates the floor, and a horizontal branch pipe that is arranged on each floor and has a downstream end connected to the standing main pipe. It is connected to the drains of miscellaneous drains such as washbasins, sinks, bathrooms and bathtubs on each floor. In addition, miscellaneous drains such as washbasins, sinks, bathrooms, and bathtubs are separate drainage pipes from the sewage pipes connected to the toilet bowl, and the bottom ends of the sewage standpipe and the sewage standpipe Each is connected to the mains of the building, and its downstream end is connected to the sewer under the road via an external fence.

このような排水管の更生修理工法として、管内をクリーニングした後に、その管内面にライニング層を形成する工法が知られている。例えば、下記特許文献1に記載の従来技術では、管路内に気流搬送される研磨材によって管路内面の付着物を除去するクリーニング工法において、管路の敷設方向一端に吸引装置を連結し、管路の敷設方向他端には管路に連通する研磨材の収容部を配置し、研磨材は収容部から管路内に吸引搬送されることが示されている。   As such a drainage pipe rehabilitation repair method, a method of forming a lining layer on the inner surface of a pipe after cleaning the inside of the pipe is known. For example, in the prior art described in Patent Document 1 below, in a cleaning method that removes deposits on the inner surface of the pipeline with an abrasive that is air-flowed into the pipeline, a suction device is connected to one end of the pipeline in the laying direction, It is shown that an accommodating portion for an abrasive that communicates with the pipeline is arranged at the other end in the laying direction of the pipeline, and the abrasive is sucked and conveyed from the accommodating portion into the pipeline.

また、下記特許文献2に記載の従来技術では、管路の敷設方向の一端に連結された吸引装置と、他端に連通する樹脂液供給部と、樹脂液供給部に一部が連通し、管路内に樹脂液吐出部を有する樹脂液供給ホースと、管路の敷設方向の他端に有する開口で外気の流入を許容しながら樹脂液供給ホースを挿通支持するホース支持部材と、樹脂液供給ホースの樹脂液吐出部側を管路の断面中心に位置決めするとともに管路内の気流を阻害しない構成を備えた吐出部支持部材とを備え、樹脂液吐出部に、管路の周方向で所定方向に向けて指向する習性を付与したことが示されている。   Further, in the prior art described in Patent Document 2 below, a suction device connected to one end of the pipe laying direction, a resin liquid supply unit communicating with the other end, and a part of the resin liquid supply unit communicated with each other, A resin liquid supply hose having a resin liquid discharge part in the pipe, a hose support member for inserting and supporting the resin liquid supply hose while allowing an outside air to flow in at an opening provided at the other end in the pipe laying direction, and a resin liquid The resin liquid discharge part side of the supply hose is positioned at the center of the cross section of the pipe line and has a discharge part support member having a configuration that does not block the air flow in the pipe line. It is shown that a habit of pointing in a predetermined direction is given.

特開2002−70145号公報JP 2002-70145 A 特開2002−66453号公報JP 2002-66453 A

このような排水管の更生工法では、管内面の汚れを除去するクリーニング工程とこのクリーニング工程後に管内面にライニング層を形成するライニング工程の何れにおいても、管路の一端に吸引装置或いは送風装置を装着して、管路内に負圧又は加圧気流を生じさせることが必要になる。   In such a drainage pipe rehabilitation method, a suction device or a blower device is provided at one end of the pipe line in both the cleaning process for removing dirt on the pipe inner surface and the lining process for forming a lining layer on the pipe inner surface after the cleaning process. It is necessary to install and generate a negative or pressurized air flow in the pipeline.

図1は、前述した排水管の更生工法の施工例を示した説明図である。図示のように集合住宅等の排水配管系では、前述した立て主管(雑排水立て主管P1,汚水立て主管P2)と横枝管(雑排水横枝管P11,汚水横枝管P21)からなる配管に加えて、立て主管に沿って一端が大気開放された通気管P3が配備されている。この通気管P3は雑排水立て主管P1と汚水立て主管P2にそれぞれ繋がっていると共に、各階の雑排水横枝管P11に連通管P31を介して個別に繋がっており、下水からの臭気を通気管P3に逃がすことで居住区域に排水口が開放されている雑排水横枝管P11に下水からの臭気が逆流するのを防止している。   FIG. 1 is an explanatory view showing a construction example of the drainage pipe rehabilitation method described above. As shown in the figure, in the drainage piping system of an apartment house or the like, the pipe composed of the above-described standing main pipe (miscellaneous drainage standing main pipe P1, sewage standing main pipe P2) and side branch pipe (miscellaneous drainage horizontal branch pipe P11, sewage horizontal branch pipe P21). In addition, a vent pipe P3 having one end opened to the atmosphere along the standing main pipe is provided. The vent pipe P3 is connected to the miscellaneous drainage main pipe P1 and the sewage stand main pipe P2 respectively, and is individually connected to the miscellaneous drainage horizontal branch pipe P11 of each floor via the communication pipe P31, so that the odor from the sewage is ventilated. By letting it escape to P3, the odor from the sewage is prevented from flowing back to the miscellaneous drainage horizontal branch pipe P11 whose drain outlet is open to the living area.

このような排水配管系に対して、雑排水用の排水管を更生修理する場合、図示のように、雑排水立て主管P1の下端に分離容器10を介して吸引装置11を接続することになるが、このまま吸引すると大気開放された通気管P3を介して気流を発生させることになり、吸引気流の流れが複雑になって施工品質上必要な風速が得られない問題が生じる。   When the drainage pipe for miscellaneous drainage is rehabilitated and repaired with respect to such a drainage piping system, the suction device 11 is connected to the lower end of the miscellaneous drainage standing main pipe P1 via the separation container 10 as shown in the figure. However, if the air is sucked as it is, an air flow is generated through the vent pipe P3 opened to the atmosphere, and the flow of the sucked air flow becomes complicated, and there is a problem that a wind speed necessary for construction quality cannot be obtained.

このような問題は、図示の×を示した箇所で施工対象の管と通気管P3との連通を遮断し、施工対象の管を独立に吸引することで解消することができる。しかしながら、施工対象の管と通気管P3との連通を遮断するには、連通管P31を切断して遮断部材を装填するという煩雑な作業が必要になり、また、図示のように各階の雑排水横枝管P11が個別に通気管P3に連通している状況下では、煩雑な遮断部材の装填作業を各階で行わなければならないことになり、多層階の場合は作業時間が長期化すると共に施工コストが高騰する新たな問題が生じることになる。   Such a problem can be solved by blocking the communication between the pipe to be constructed and the ventilation pipe P3 at the location indicated by × and sucking the pipe to be constructed independently. However, in order to cut off the communication between the pipe to be constructed and the ventilation pipe P3, a complicated work of cutting the communication pipe P31 and loading a blocking member is required. Under the situation where the side branch pipe P11 is individually connected to the vent pipe P3, it is necessary to carry out complicated loading work of the blocking member on each floor. There will be a new problem of rising costs.

本発明は、このような問題に対処することを課題の一例とするものである。すなわち、管内に吸引又は加圧気流を生じさせることが必要な排水管の更生工法において、施工対象の管に施工品質上十分な風速が得られるようにすること、施工対象の管と通気管との連通を遮断する際に煩雑な遮断部材の装填作業を行わないで作業性良く更生修理を進めることができること、各階の横枝管が個別に通気管に連通している多層階の現場においても、作業時間を長期化と施工コストの高騰を避けて、速やか且つ安価に施工することができること、等が本発明の目的である。   This invention makes it an example of a subject to cope with such a problem. That is, in the rehabilitation method for drainage pipes that need to generate suction or pressurized air flow in the pipe, make sure that the pipe to be constructed has a sufficient wind speed in terms of construction quality, It is possible to proceed with rehabilitation and repair with good workability without carrying out complicated loading work when shutting off the communication, and even in the multi-story floor where each side branch pipe is individually connected to the vent pipe It is an object of the present invention that construction can be performed promptly and inexpensively while avoiding prolonged working time and a rise in construction costs.

このような目的を達成するために、本発明による排水管の更生工法は、以下の独立請求項に係る構成を少なくとも具備するものである。
[請求項1]階層を縦に貫通する立て主管と、各階に配備されて前記立て主管に下流端が繋がっている横枝管を備えると共に、各階に配備された前記横枝管が前記立て主管に沿って配備される通気管に連通している排水管を施工対象として、施工対象の管内に負圧又は加圧の気流を発生させることが必要な更生工法であって、前記通気管内に内張チューブを挿入し、該内張チューブを拡径して前記通気管内面に密着させることで、前記通気管と前記横枝管との連通を遮断することを特徴とする排水管の更生工法。
In order to achieve such an object, the drainage pipe rehabilitation method according to the present invention comprises at least the configuration according to the following independent claims.
[Claim 1] A standing main pipe vertically penetrating a hierarchy, and a lateral branch pipe provided on each floor and connected to a downstream end of the standing main pipe, and the lateral branch pipe arranged on each floor are the standing main pipe It is a rehabilitation method that requires generating a negative or pressurized air flow in the pipe to be constructed, with the drain pipe communicating with the vent pipe arranged along A drainage pipe rehabilitation method comprising inserting a tension tube, expanding the diameter of the lining tube, and closely contacting the inner surface of the ventilation pipe, thereby blocking communication between the ventilation pipe and the side branch pipe.

前述した特徴を有する本発明は、横枝管を通気管との連通を遮断するのに、横枝管と通気管とを連通する連通管を切断して遮断部材を装填するような煩雑な作業を行わなくて済む。通気管に内張チューブを挿入して拡径するだけの簡単な作業で、全ての横枝管と通気管との連通を同時に遮断することができる。   In the present invention having the above-described features, in order to cut off the communication between the side branch pipe and the vent pipe, the troublesome work of cutting the communication pipe connecting the side branch pipe and the vent pipe and loading the shut-off member You don't have to. By simply inserting the lining tube into the ventilation pipe and expanding the diameter, it is possible to simultaneously block communication between all the lateral branch pipes and the ventilation pipe.

これによって、管内に吸引又は加圧気流を生じさせることが必要な排水管の更生工法において、施工対象の管に施工品質上十分な風速が得られるようにすることができ、煩雑な遮断部材の装填作業を行わないで作業性良く更生修理を進めることができる。また、各階の横枝管が個別に通気管に連通している多層階の現場においても、作業時間の長期化と施工コストの高騰を避けて、速やか且つ安価に施工することができる。   As a result, in the drainage pipe rehabilitation method that needs to generate suction or pressurized airflow in the pipe, it is possible to obtain a sufficient wind speed in terms of construction quality in the pipe to be constructed, Rehabilitation and repair can be carried out with good workability without performing loading work. In addition, even in a multi-story floor where the lateral branch pipes of each floor are individually connected to the ventilation pipe, construction can be performed promptly and inexpensively while avoiding a prolonged work time and an increase in construction costs.

従来技術の説明図である。It is explanatory drawing of a prior art. 本発明の一実施形態に係る排水管の更生工法を説明する説明図である。It is explanatory drawing explaining the rehabilitation method of the drain pipe which concerns on one Embodiment of this invention. 内張チューブによる通気管と連通管との遮断方法を示した説明図である。It is explanatory drawing which showed the interruption | blocking method of the ventilation pipe and communication pipe by a lining tube.

以下、本発明の実施形態を図面に基づいて説明する。図2は本発明の一実施形態に係る排水管の更生工法を説明する説明図である。先ず、図示の排水配管系について説明すると、ここでは多層階の集合住宅を例示している。マンション等の集合住宅1には多層階のフロア(1F,2F,3F,4F,…,nF)が形成され、各階のフロアに洗面器,流し台,浴槽,ユニットバスの浴室等の雑排水器2が装備され、その雑排水器2の排水口2Aが雑排水横枝管P11に繋がっている。また、各階のフロアに装備された便器3は汚水横枝管P21に繋がっている。そして、階層を縦に貫通するように雑排水立て主管P1と汚水立て主管P2が備えられており、各階の雑排水横枝管P11の下流端が個別に雑排水立て主管P1に繋がっており、各階の汚水横枝管P21の下流端がそれぞれ汚水立て主管P2に繋がっている。本発明においては、雑排水立て主管P1と汚水立て主管P2を含むような階層を縦に貫通する排水管を立て主管とし、雑排水横枝管P11と汚水横枝管P21を含むような各階に配備される排水管を横枝管と称している。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 2 is an explanatory view illustrating a drainage pipe rehabilitation method according to an embodiment of the present invention. First, the illustrated drainage piping system will be described here by way of example of a multi-story apartment house. A multi-story floor (1F, 2F, 3F, 4F, ..., nF) is formed in the apartment house 1 such as a condominium, etc., and various drainage devices 2 such as a wash basin, a sink, a bathtub, a bathroom of a unit bath, etc. on each floor. And the drain port 2A of the miscellaneous drainage device 2 is connected to the miscellaneous drainage horizontal branch pipe P11. Moreover, the toilet bowl 3 equipped on each floor is connected to the sewage horizontal branch pipe P21. And the miscellaneous drainage standing main pipe P1 and the sewage standing main pipe P2 are provided so that it may penetrate the hierarchy vertically, and the downstream end of the miscellaneous drainage lateral branch pipe P11 of each floor is individually connected to the miscellaneous drainage standing main pipe P1, The downstream end of the sewage horizontal branch pipe P21 on each floor is connected to the sewage standing main pipe P2. In the present invention, a drainage pipe that vertically penetrates a hierarchy including the miscellaneous drainage main pipe P1 and the sewage standing main pipe P2 is used as a standing main pipe, and each floor including the miscellaneous drainage horizontal branch pipe P11 and the sewage horizontal branch pipe P21 is provided. The drainage pipe to be deployed is called a horizontal branch pipe.

このような排水管に対して通気管P3が配備されている。通気管P3は上端が大気開放されており、前述した雑排水立て主管P1と汚水立て主管P2に沿って階層を縦に貫通するように配備されている。そして、通気管P3は、連通管P30,P30A,P31を介して雑排水立て主管P1,汚水立て主管P2,雑排水横枝管P11,汚水横枝管P21にそれぞれ連通している。特に、各階に配備されている雑排水横枝管P11は個別に通気管P3に連通しており、多層階の集合住宅では、複数の連通管P31が通気管P3に連通することになる。   A vent pipe P3 is provided for such a drain pipe. The upper end of the vent pipe P3 is open to the atmosphere, and the vent pipe P3 is arranged so as to vertically penetrate the hierarchy along the miscellaneous drainage main pipe P1 and the sewage stand main pipe P2. The vent pipe P3 communicates with the miscellaneous drainage standing main pipe P1, the sewage standing main pipe P2, the misted drainage side branch pipe P11, and the sewage side branch pipe P21 through the communication pipes P30, P30A, and P31. In particular, the miscellaneous drainage horizontal branch pipes P11 provided on each floor communicate with the vent pipe P3 individually, and in a multi-story apartment house, a plurality of communication pipes P31 communicate with the vent pipe P3.

このような排水管の配管系に対して、雑排水立て主管P1,雑排水横枝管P11,汚水立て主管P2,汚水横枝管P21が更生修理の施工対象になる。以下に、雑排水立て主管P1と雑排水横枝管P11を施工対象管にする場合を例にして本発明の更生工法を説明する。   For such a drainage pipe piping system, the miscellaneous drainage standing main pipe P1, miscellaneous drainage horizontal branch pipe P11, the sewage standing main pipe P2, and the sewage horizontal branching pipe P21 are subject to rehabilitation repair. The rehabilitation method of the present invention will be described below by taking as an example the case where the miscellaneous drainage standing main pipe P1 and miscellaneous drainage horizontal branch pipe P11 are pipes to be constructed.

先ず、施工対象の雑排水立て主管P1,雑排水横枝管P11と通気管P3との連通を遮断する。このために、通気管P3の上下端を開放して、通気管P3内に一端から他端に向けて内張チューブ12を挿入する。内張チューブ12の挿入はパラシュート通線等の公知の通線方法を活用して行うことができる。内張チューブ12は一端を閉塞した状態にして他端に加圧装置13を接続する。   First, the communication between the miscellaneous drainage standing main pipe P1, the misdrain drainage side branch pipe P11, and the vent pipe P3 to be constructed is blocked. For this purpose, the upper and lower ends of the vent pipe P3 are opened, and the lining tube 12 is inserted into the vent pipe P3 from one end to the other end. The lining tube 12 can be inserted using a known wiring method such as parachute wiring. The lining tube 12 is in a state where one end is closed, and a pressurizing device 13 is connected to the other end.

図3は、内張チューブ12による通気管P3と連通管P31との遮断方法を示した説明図である。通気管P3に内張チューブ12を挿入した状態では、同図(a)に示すように、内張チューブ12は通気管P3内に遊びを持って挿入されている。内張チューブ12は縦に沿った折り畳み状態或いは縮径状態で通気管P3内に挿入される。このように内張チューブ12の挿入が完了すると、前述した加圧装置13を作動させて、同図(b)に示すように、内張チューブ12内に空気圧を加える。そうすると、内張チューブ12は拡径されて通気管P3内面に密着することになり、この内張チューブ12の密着によって通気管P3と連通管P31との連通口が塞がれて、通気管P3と雑排水横枝管P11との連通が遮断されることになる。   FIG. 3 is an explanatory view showing a method of blocking the ventilation pipe P3 and the communication pipe P31 by the lining tube 12. As shown in FIG. In a state where the lining tube 12 is inserted into the vent pipe P3, the lining tube 12 is inserted with play in the vent pipe P3 as shown in FIG. The lining tube 12 is inserted into the vent pipe P3 in a folded state or a reduced diameter state along the length. When the insertion of the lining tube 12 is completed in this way, the pressure device 13 described above is operated to apply air pressure into the lining tube 12 as shown in FIG. Then, the lining tube 12 is expanded in diameter and is in close contact with the inner surface of the vent pipe P3, and the communication port between the vent pipe P3 and the communication pipe P31 is blocked by the close contact of the lining tube 12, and the vent pipe P3. And communication with the drainage horizontal branch pipe P11 are cut off.

このように用いられる内張チューブ12は、外表面が強化繊維で覆われた樹脂チューブであることが好ましい。これによると、通気管P3の端部や管内にあるバリ等に対して強固であり、内張チューブ12が破れて加圧時の密着性が得られないと行った不具合を回避することができる。具体的には、ポリエステル繊維の織物によって強化されたポリエステル樹脂チューブ等を用いることができる。   The lining tube 12 used in this way is preferably a resin tube whose outer surface is covered with reinforcing fibers. According to this, it is strong with respect to the end part of the ventilation pipe P3, the burr | flash etc. in a pipe | tube, etc., and it can avoid the malfunction performed when the lining tube 12 is torn and the adhesiveness at the time of pressurization is not obtained. . Specifically, a polyester resin tube reinforced with a polyester fiber fabric can be used.

その後は、図3(b)に示した加圧状態を維持しながら、施工対象の雑排水立て主管P1の端部に分離容器10を介して吸引装置11を接続する。そして、吸引装置11を作動させることで、雑排水立て主管P1及び雑排水横枝管P11内に吸引気流を生じさせ、この吸引気流を利用して雑排水立て主管P1及び雑排水横枝管P11内のクリーニングとライニングを行う。   Thereafter, the suction device 11 is connected to the end of the miscellaneous drainage main pipe P1 to be constructed through the separation container 10 while maintaining the pressurized state shown in FIG. Then, by operating the suction device 11, a suction airflow is generated in the miscellaneous drainage main pipe P1 and the miscellaneous drainage horizontal branch pipe P11. Clean and line the inside.

クリーニング工程では、雑排水立て主管P1又は雑排水横枝管P11の上端を開放して、この端部に研磨材の収容部(図示省略)を配置し、吸引装置11によって生じた吸引気流によって収容部から研磨材を管内に吸引搬送する。また、ライニング工程では、雑排水立て主管P1又は雑排水横枝管P11の上端を開放して、この端部に樹脂供給部(図示省略)を接続し、吸引装置11によって生じた吸引気流によって樹脂供給部から樹脂ライニング材を管内に吸引搬送する。前述した説明では、施工対象の管内に吸引気流を生成する場合を例にして説明したが、施工対象の管に加圧装置を接続して管内に加圧気流を生成する場合も同様に施工することができる。   In the cleaning process, the upper end of the miscellaneous drainage main pipe P1 or the miscellaneous drainage horizontal branch pipe P11 is opened, and an accommodating portion (not shown) for the abrasive is disposed at this end, and accommodated by the suction airflow generated by the suction device 11 Abrasive material is sucked and conveyed into the pipe from the section. Further, in the lining process, the upper end of the miscellaneous drainage main pipe P1 or miscellaneous drainage horizontal branch pipe P11 is opened, and a resin supply unit (not shown) is connected to this end, and the resin is generated by the suction air flow generated by the suction device 11. The resin lining material is sucked and conveyed from the supply unit into the pipe. In the above description, the case where the suction air flow is generated in the construction target pipe has been described as an example, but the construction is similarly performed when the pressurization apparatus is connected to the construction target pipe to generate the pressurized air flow in the pipe. be able to.

本発明のこのような実施形態によると、管内に吸引又は加圧気流を生じさせることが必要な排水管の更生工法において、施工対象の管を通気管から分離独立できるので、施工対象の管に施工品質上十分な風速が得られるようにすることができる。   According to such an embodiment of the present invention, in the drainage pipe rehabilitation method that needs to generate suction or pressurized airflow in the pipe, the construction target pipe can be separated and independent from the ventilation pipe, so that the construction target pipe A sufficient wind speed in terms of construction quality can be obtained.

また、内張チューブ12を通気管P3内に挿入して拡径することで、通気管P3に連通する全ての連通口を同時に塞ぐことができるので、施工対象の管と通気管P3との連通を遮断する際に煩雑な遮断部材の装填作業を行わないでよく、作業性良く更生修理を進めることができる。   Further, by inserting the lining tube 12 into the vent pipe P3 and expanding the diameter, all the communication ports communicating with the vent pipe P3 can be closed at the same time, so that the pipe to be constructed and the vent pipe P3 communicate with each other. It is not necessary to carry out a complicated loading operation of the blocking member when blocking the battery, and the rehabilitation repair can be advanced with good workability.

また、通気管P3に連通する連通口が多数あってもこれらを同時に塞ぐことができるので、各階の雑排水横枝管P11が個別に通気管P3に連通している多層階の現場においても、作業時間の長期化と施工コストの高騰を避けて、速やか且つ安価に施工することができる。   In addition, even if there are a large number of communication ports communicating with the vent pipe P3, these can be closed at the same time, so even in the multi-story floor where the miscellaneous drainage lateral branch pipes P11 of each floor communicate with the vent pipe P3 individually, Construction can be done quickly and inexpensively, avoiding prolonged work time and soaring construction costs.

1:集合住宅,2:雑排水器,3:便器,
10:分離容器,11:吸引装置,12:内張チューブ,13:加圧装置,
P1:雑排水立て主管,P2:汚水立て主管,P3:通気管,
P11:雑排水横枝管,P21:汚水横枝管,
P30,P30A,P31:連通管
1: apartment house, 2: drainage, 3: toilet
10: separation container, 11: suction device, 12: lining tube, 13: pressurization device,
P1: miscellaneous drainage main pipe, P2: sewage stand main pipe, P3: vent pipe,
P11: Miscellaneous drainage side branch pipe, P21: Sewage side branch pipe,
P30, P30A, P31: Communication pipe

Claims (4)

階層を縦に貫通する立て主管と、各階に配備されて前記立て主管に下流端が繋がっている横枝管を備えると共に、各階に配備された前記横枝管が前記立て主管に沿って配備される通気管に連通している排水管を施工対象として、施工対象の管内に負圧又は加圧の気流を発生させることが必要な更生工法であって、
前記通気管内に内張チューブを挿入し、該内張チューブを拡径して前記通気管内面に密着させることで、前記通気管と前記横枝管との連通を遮断することを特徴とする排水管の更生工法。
A vertical main pipe vertically penetrating the hierarchy, and a horizontal branch pipe arranged on each floor and connected to a downstream end of the vertical main pipe, and the horizontal branch pipe arranged on each floor is arranged along the vertical main pipe It is a rehabilitation method that needs to generate a negative or pressurized air flow in the construction target pipe, with the drain pipe communicating with the ventilation pipe
Drainage characterized by inserting a lining tube into the ventilation pipe, expanding the diameter of the lining tube and bringing it into close contact with the inner surface of the ventilation pipe, thereby blocking communication between the ventilation pipe and the lateral branch pipe Pipe rehabilitation method.
前記内張チューブは、縦に沿った折り畳み状態又は縮径状態で前記通気管の一端から他端に向けて挿入されることを特徴とする請求項1記載された排水管の更生工法。   The drainage pipe rehabilitation method according to claim 1, wherein the lining tube is inserted from one end of the vent pipe toward the other end in a folded state or a reduced diameter state along the length. 前記内張チューブは、外表面が強化繊維で覆われた樹脂チューブであることを特徴とする請求項1又は2記載された排水管の更生工法。   The drain pipe rehabilitation method according to claim 1 or 2, wherein the lining tube is a resin tube whose outer surface is covered with reinforcing fibers. 前記内張チューブを前記通気管内面に密着させた状態で、前記立て主管の一端に分離容器を介して吸引装置を接続することによって該立て主管及び前記横枝管に気流を生じさせることを特徴とする請求項1〜3のいずれかに記載された排水管の更生工法。   An air flow is generated in the standing main pipe and the side branch pipe by connecting a suction device to one end of the standing main pipe through a separation container in a state where the lining tube is in close contact with the inner surface of the vent pipe. The drainage pipe rehabilitation method according to any one of claims 1 to 3.
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