JPH0610367A - Waterproof method for manhole - Google Patents
Waterproof method for manholeInfo
- Publication number
- JPH0610367A JPH0610367A JP2418679A JP41867990A JPH0610367A JP H0610367 A JPH0610367 A JP H0610367A JP 2418679 A JP2418679 A JP 2418679A JP 41867990 A JP41867990 A JP 41867990A JP H0610367 A JPH0610367 A JP H0610367A
- Authority
- JP
- Japan
- Prior art keywords
- waterproof material
- manhole
- water
- tubular
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Sewage (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はマンホールの防水工法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manhole waterproofing method.
【０００２】[0002]
【従来技術とその問題点】本出願人は先に第１１〜１４
図に概略的に示すマンホールの防水工法を提案した（例
えば特開昭６４−４３６２３号工法参照）。この防水工
法によれば、防水材として第１１〜１２図に示すよう
に、施工対象のマンホール（ａ）の内面全面に密着被覆
できるような寸法の容筒形に予め成形されていて、上記
マンホール（ａ）よりも小口径となるように変形加工さ
れた硬質乃至半硬質の熱可塑性合成樹脂製防水材
（１′）を用い、該防水材（１′）を変形加工状態のも
とに上記マンホール（ａ）内に挿入（第１３図参照）し
た後、内部よりの加熱加圧で元の容筒形状に膨脹復元さ
せマンホール（ａ）の内面全面に被着（第１４図参照）
することにより、防水処理を施し得るようになってい
る。この防水工法によれば施工性の改善と防水性能の向
上を計り得るが、次の点で尚満足すべきものでなかっ
た。 施工の間、マンホール（ａ）内への下水の流れ込みを
防止する必要があるので、第１５図に示すように例えば
バイパス（ｅ）を通じて水替えを行なわなければなら
ず、面倒であり、コスト高の原因となる。 マンホール（ａ）の底部を構成しているインバート部
の通水溝（第１１〜１５図では省略されている）に容筒
型防水材（１′）の底部をフィットさせることがむずか
しい。2. Description of the Related Art The applicant of the present invention has previously described Nos. 11-14.
A manhole waterproofing method schematically shown in the drawing has been proposed (see, for example, Japanese Patent Laid-Open No. 64-43623). According to this waterproofing method, as shown in FIGS. 11 to 12, as a waterproofing material, the manhole (a) to be constructed is preliminarily formed into a tubular shape having a size capable of closely covering the entire inner surface of the manhole (a). A waterproof material (1 ') made of a rigid or semi-rigid thermoplastic synthetic resin that has been deformed so as to have a smaller diameter than that of (a) is used, and the waterproof material (1') is subjected to the above deformation under the deformed state. After inserting into the manhole (a) (see Fig. 13), it is expanded and restored to the original cylindrical shape by heating and pressurizing from the inside and adhered to the entire inner surface of the manhole (a) (see Fig. 14).
By doing so, the waterproof treatment can be applied. According to this waterproofing method, the workability and the waterproofing performance can be improved, but the following points were still unsatisfactory. Since it is necessary to prevent the sewage from flowing into the manhole (a) during the construction, it is necessary to change the water through the bypass (e) as shown in FIG. 15, which is troublesome and costly. Cause of. It is difficult to fit the bottom portion of the tubular waterproof material (1 ') into the water passage groove (omitted in FIGS. 11 to 15) of the invert portion that constitutes the bottom portion of the manhole (a).
【０００３】本発明はこのような問題点を一掃すること
を目的としてなされたものである。The present invention has been made for the purpose of eliminating such problems.
【０００４】[0004]
【問題点を解決するための手段】本発明は、防水材とし
て、施工対象のマンホールの内面全面に密着被覆できる
ような寸法の容筒形状に予め成形されていて、上記マン
ホールより小口径となるように変形加工された硬質乃至
半硬質の熱可塑性合成樹脂製防水材を用い、該防水材を
変形加工状態のもとに上記マンホール内に挿入した後、
内部より加熱加圧して元の形状に膨脹復元させてマンホ
ール内面に被覆する防水工法に於て、変形加工防水材の
マンホールへの挿入工程前に、 マンホールの底部を構成しているインバート部の上面
を、その通水溝にフィットする凹溝部を有する底防水材
により被覆する工程及び 上記底防水材の凹溝部内に、該凹溝部に収まるよう
な寸法、形状の導水管を設置して、下水の通水路を形成
する工程とを含み、之等工程及びを経て、上記防水
工法の適用でマンホール内全面を容筒型防水材で被覆
し、次に容筒型防水材の胴部を残したままで底部の切断
除去と、この切断除去部を作業口とする導水管の撤去と
を行なった後、容筒型防水材と底防水材とを、後者防水
材の周縁部で接着又は溶着手段の適用で一体化すること
を特徴とするマンホールの防水工法に係る。According to the present invention, as a waterproof material, the manhole to be constructed is preliminarily molded into a tubular shape having a size capable of closely covering the entire inner surface, and has a smaller diameter than the manhole. Using a hard or semi-rigid thermoplastic synthetic resin waterproof material that has been deformed as described above, and after inserting the waterproof material into the manhole under a deformed state,
In the waterproof method of heating and pressurizing from the inside to expand and restore the original shape and cover the inner surface of the manhole, before the insertion process of the deformed waterproof material into the manhole, the upper surface of the invert part that constitutes the bottom of the manhole Is covered with a bottom waterproof material having a concave groove portion that fits the water passage, and a water conduit having a size and shape that fits in the concave groove portion is installed in the concave groove portion of the bottom waterproof material, The process of forming a water passage of the above, through the above steps, and by applying the above-mentioned waterproofing method, the entire surface of the manhole is covered with a tubular waterproof material, and then the trunk of the tubular waterproof material is left. After cutting and removing the bottom portion and removing the water conduit using this cutting and removing portion as a working port, the tubular waterproof material and the bottom waterproof material are bonded or welded at the peripheral portion of the latter waterproof material. Manhole prevention characterized by being integrated by application According to the method.
【０００５】[0005]
【実施例】以下に本発明工法の一実施状況を添付図面に
もとづき説明すると次の通りである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following will explain one embodiment of the method of the present invention with reference to the accompanying drawings.
【０００６】本発明工法の実施に際しては、施工対象の
マンホール（ａ）内への下水の流れ込みを防止するため
に、上流側の下水管（ｂ１）の口部に遮水バッグ（ｄ）
が設置される。この遮水は一時的なもので、いずれ通水
状態に戻す必要があるので、遮水バッグ（ｄ）として
は、破裂させるか又はエアを抜くことで実質的に遮水性
を消失するような構成のものが適当であり、例えば高弾
性、高抗張力のゴム製のものが用いられる。下流側の下
水管（ｂ２）の遮水は、図では省略されているが、上流
側と同様の手段で行なえばよい。このように下水管（ｂ
１），（ｂ２）からの水の流れこみを防止した後に、マ
ンホール（ａ）内、特に底部の清掃が行われる。以上で
予備的作業を終える。In carrying out the method of the present invention, in order to prevent the sewage from flowing into the manhole (a) to be constructed, the water-blocking bag (d) is provided at the mouth of the upstream sewage pipe (b 1 ).
Is installed. This water shield is temporary, and it is necessary to return it to a water-permeable state eventually. Therefore, the water shield bag (d) is configured so that the water shield is substantially lost by bursting or bleeding air. Those made of rubber having high elasticity and high tensile strength are suitable. The water blocking of the downstream side sewer pipe (b 2 ) is omitted in the figure, but may be performed by the same means as the upstream side. Thus, the sewer pipe (b
After preventing the water from flowing in from 1 ) and (b 2 ), the inside of the manhole (a), in particular, the bottom is cleaned. This concludes the preliminary work.
【０００７】次いで、第１〜２図に示すように本工事が
開始され、マンホール（ａ）の底部を構成しているイン
バート部（ｃ）の上面全面が底防水材（２）により被覆
される。この被覆状態に於ては、底防水材（２）の凹溝
部（２１）がインバート部（ｃ）の通水溝（ｃ１）にフ
ィットしている。Next, as shown in FIGS. 1 and 2, this construction is started, and the entire upper surface of the invert portion (c) forming the bottom portion of the manhole (a) is covered with the bottom waterproof material (2). . In this covering state, the concave groove portion (21) of the bottom waterproof material (2) fits into the water passage groove (c 1 ) of the invert portion (c).
【０００８】底防水材（２）は下記容筒型防水材（１）
とともに、硬質乃至半硬質の熱可塑性合成樹脂例えば塩
化ビニル樹脂から成形され、成形時に、インバート部
（ｃ）の上面に対応する寸法と、通水溝（ｃ１）にフィ
ットする凹溝部（２１）とが与えられている。The bottom waterproof material (2) is the following cylindrical waterproof material (1)
At the same time, it is molded from a rigid or semi-rigid thermoplastic synthetic resin such as vinyl chloride resin, and at the time of molding, has a dimension corresponding to the upper surface of the invert portion (c) and a groove portion (21) that fits into the water passage groove (c 1 ). And are given.
【０００９】図示のようにマンホール（ａ）の上部が上
方へ漸進的に口径を減じている場合は、底防水材（２）
の現寸法下でのマンホール（ａ）内への挿入は困難とな
る。而してこのような場合は、挿入前に、底防水材
（２）が凹溝部（２１）に沿い好ましくは加熱軟化状態
のもとに２つ折りされ、その後折れ線を縦向きにしてマ
ンホール（ａ）内に挿入され、挿入後に、好ましくは加
熱軟化状態のもとに元の形状に戻され、同時に第２図に
示すように凹溝部（２１）が通水溝（ｃ１）内にフィッ
トされる。尚防水工事後に於ける底防水材（２）下面内
方への水の浸入を防止するために、底防水材（２）をイ
ンバート部（ｃ）上面に接着固定しておくことが好まし
い。接着剤としては、例えばエポキシ樹脂系のものを適
用できる。When the upper part of the manhole (a) gradually decreases in diameter upward as shown, the bottom waterproof material (2)
It becomes difficult to insert into the manhole (a) under the current dimensions of. In such a case, therefore, before insertion, the bottom waterproof material (2) is folded in two along the groove (21), preferably under a heat-softened state, and then the fold line is oriented vertically to form the manhole (a). ), And after the insertion, it is restored to its original shape, preferably under a heat-softened state, and at the same time, the concave groove portion (21) is fitted into the water passage groove (c 1 ) as shown in FIG. It It is preferable that the bottom waterproof material (2) is adhered and fixed to the upper surface of the invert portion (c) in order to prevent water from entering inside the bottom surface of the bottom waterproof material (2) after waterproofing work. As the adhesive, for example, an epoxy resin-based adhesive can be applied.
【００１０】次に上記底防水材（２）の凹溝部（２１）
内に、該凹溝部（２１）内に収まるような寸法、形状の
導水管（３）が設置される。Next, the concave groove portion (21) of the bottom waterproof material (2).
Inside, a water conduit (3) having a size and shape that can be accommodated in the concave groove (21) is installed.
【００１１】この設置状況が第３〜４図に示され、導水
管（３）は、上記凹溝部（２１）の全長に亘って嵌り込
んでいる断面半円形の中央部（３１）と、中央部（３
１）の両端から外方へ延出して、最寄りの下水管
（ｂ１）（ｂ２）内に挿入された、断面円形の両端部
（３２）（３２）とから構成され、両端部（３２）（３
２）と下水管（ｂ１）（ｂ２）との間には、遮水バッグ
（ｄ）を適宜破壊し又はエア抜きするための小さな作業
空間（４）が形成されている。This installation situation is shown in FIGS. 3 to 4, in which the water conduit (3) has a central portion (31) having a semicircular cross section fitted over the entire length of the concave groove portion (21), and a central portion. Division (3
1) is outwardly extended from both ends and is inserted into the nearest sewer pipe (b 1 ) (b 2 ), and is composed of both end portions (32) (32) having a circular cross section, and both end portions (32 ) (3
A small working space (4) is formed between 2) and the sewer pipes (b 1 ) (b 2 ) for appropriately breaking or bleeding the water blocking bag (d).
【００１２】導水管（３）を設置した後は、上記作業空
間（４）より棒状物（図示せず）を差し込み遮水バッグ
（ｄ）を破裂させるか又はエア抜きを行なうことで嵩小
（ｄ１）（第６図参照）となし、通水状態に戻し、その
後空間（４）内に詰め物（５）（第６図参照）を施し、
導水管（３）を固定する。After installation of the water conduit (3), a rod-shaped material (not shown) is inserted from the working space (4) to rupture the water-impervious bag (d) or bleed air to make it bulky ( d 1 ) (see FIG. 6), return to the water-passing state, and then fill the space (4) with the filling (5) (see FIG. 6),
Fix the water conduit (3).
【００１３】下水間（ｂ１）内の水位は通常は極く低く
且つ流量も左程多くないので、防水工事中に水位が凹溝
部（２１）の上端レベルを超える危険性はないのが、雨
期や降雨時など水位が比較的高く且つ流量も多い場合
は、詰め物（５）を施した部分の空間（４）からマンホ
ール（ａ）内に水が流入する危険性を生ずる。従ってこ
のような場合は、詰め物（５）等を利用して空間（４）
をシールするか、又は第５図に示すように、導水管
（３）の両端部（３２）（３２）にエアバッグ（３３）
（３３）を装備し、このエアバッグ（３３）（３３）の
膨脹で、空間（４）をシールするようにすればよい。Since the water level in the sewage space (b 1 ) is usually extremely low and the flow rate is not as great as on the left, there is no danger that the water level will exceed the upper level of the groove (21) during waterproofing work. When the water level is relatively high and the flow rate is large, such as during the rainy season or during rainfall, there is a risk that water will flow into the manhole (a) from the space (4) where the padding (5) is applied. Therefore, in such a case, use the padding (5) etc. to create the space (4)
Or seal the air bag (33) on both ends (32) (32) of the water conduit (3) as shown in FIG.
(33) may be provided, and the space (4) may be sealed by the inflation of the airbags (33) (33).
【００１４】導水管（３）の設置により、上流側の下水
管（ｂ１）と下流側の下水管（ｂ２）とを該導水管
（３）を介し、通水状態に接続した後に、第１１〜１４
図に示す従来法の適用で、マンホール（ａ）内に容筒型
防水材（１）からなる防水膜が形成される。この防水膜
の形成は従来法に従い行えばよく、形成後に於ては、上
記防水材（１）の底部（１１）は、第６〜７図に示すよ
うな、底防水材（２）と、凹溝部（２１）を除き、略々
密着している。[0014] The installation of the water conduit (3), through the upstream sewer pipe and (b 1) downstream sewer pipe (b2) and the conductor water pipe (3), after connecting to the water flow state, first 11-14
By applying the conventional method shown in the figure, the waterproof film made of the tubular waterproof material (1) is formed in the manhole (a). This waterproof film may be formed according to a conventional method. After the formation, the bottom portion (11) of the waterproof material (1) is the bottom waterproof material (2) as shown in FIGS. Except for the groove (21), they are in close contact.
【００１５】次いで第８図に示すように、容筒型防水材
（１）の底部（１１）と下水管（ｂ１）（ｂ２）への閉
鎖部（１２）（第７図参照）とが縁部（１１１）を除い
て、切断除去されると共に、この切断除去部（１１２）
を作業口として、導水管（３）がその付属部材例えば第
４図では詰め物（５）及び遮水バッグ（ｄ）、また第５
図ではエア抜きにより収縮したエアバッグ（３３）（３
３）と共に抜き出し回収される。回収を容易とするため
に、導水管（３）は折曲可能なゴム製のものが適当であ
る。導水管（３）の撤去後は、底防水材（２）の凹溝部
（２１）が通水溝として機能し、以後も通水状態をその
まま保持できる。Next, as shown in FIG. 8, a bottom portion (11) of the tubular waterproof material (1) and a closing portion (12) (see FIG. 7) to the sewer pipes (b 1 ) (b 2 ). Is cut and removed except for the edge portion (111), and the cut and removed portion (112)
With the water guide pipe (3) as an accessory member, for example, the padding (5) and the water shield bag (d) in FIG.
In the figure, the air bags (33) (3
It is extracted and collected together with 3). In order to facilitate recovery, the water conduit (3) is preferably made of bendable rubber. After removing the water conduit (3), the concave groove portion (21) of the bottom waterproof material (2) functions as a water passage groove, and the water passage state can be maintained as it is thereafter.
【００１６】次に容筒型防水材（１）の底部の縁部（１
１１）が底防水材（２）の上面の周縁部に溶着または接
着剤（図示せず）の適用で接着一体化される。この一体
化で容筒型防水材（１）は第９〜１０図に示すように再
び底付きとなり、従来工法と変らない防水性能が得られ
る。Next, the bottom edge (1) of the tubular waterproof material (1)
11) is adhered and integrated with the peripheral portion of the upper surface of the bottom waterproof material (2) by welding or application of an adhesive (not shown). By this integration, the tubular waterproof material (1) is bottomed again as shown in FIGS. 9 to 10, and waterproof performance similar to that of the conventional method can be obtained.
【００１７】容筒型防水材（１）の背面側には、その加
熱収縮で薄い隙間（６）が生ずるが、この隙間（６）
は、例えばエポキシ樹脂系などの裏込め剤を用いて裏込
めすることにより消去できる。On the back side of the tubular waterproof material (1), a thin gap (6) is produced due to its heat shrinkage. This gap (6)
Can be erased by backfilling with a backfilling agent such as an epoxy resin.
【００１８】[0018]
【効果】本発明工法によれば、上流側の下水管（ｂ１）
と下流側の下水管（ｂ２）とを通水状態に保持する通水
路を確保した状態で防水工事を行い得るので、従来工法
に見られるような水替えのためのバイパスの設置は不要
となり、施工性を改善できる。更に容筒型防水剤でマン
ホールの防水工事を行う前に、底防水材で予めインバー
ト部上面に被覆を施しておくので、底防水材の凹溝部を
インバート部の通水溝にうまくフィットさせることがで
き、施工後に於ては、凹溝部を通水溝として安定確実に
機能させることができる。[Effect] According to the method of the present invention, the sewer pipe (b 1 ) on the upstream side
Since it is possible to carry out waterproofing work with a water passage that holds the water and the sewer pipe (b 2 ) on the downstream side secured, it is not necessary to install a bypass for water change as in the conventional method. The workability can be improved. Before the manhole waterproofing work is performed with a tubular waterproofing agent, the bottom waterproofing material should be coated on the upper surface of the invert portion beforehand, so the recessed groove of the bottom waterproofing material should fit well into the water channel of the inverting portion. After the construction, the concave groove portion can function as a water passage groove in a stable and reliable manner.
【図１】本発明工法に於ける底防水材の取付け工程の状
況を概略的に示す縦断面図である。FIG. 1 is a vertical cross-sectional view schematically showing a state of a bottom waterproof material attaching step in a method of the present invention.
【図２】横断面図である。FIG. 2 is a cross-sectional view.
【図３】導水管の設置工程の状況を概略的に示す縦断面
図である。FIG. 3 is a vertical cross-sectional view schematically showing a situation of a water conduit installation process.
【図４】同横断面図である。FIG. 4 is a transverse sectional view of the same.
【図５】第３図の変形例を示す縦断面図である。5 is a vertical cross-sectional view showing a modified example of FIG.
【図６】容筒型防水材による防水膜の形成状況を概略的
に示す縦断面図である。FIG. 6 is a vertical cross-sectional view schematically showing the state of formation of a waterproof film made of a tubular waterproof material.
【図７】同横断面図であるFIG. 7 is a transverse sectional view of the same.
【図８】容筒型防水材の底部の切断除去状況を概略的に
示す説明図である。FIG. 8 is an explanatory view schematically showing a cutting and removing situation of the bottom portion of the tubular waterproof material.
【図９】防水工事終了時の状況を概略的に示す縦断面図
である。FIG. 9 is a vertical cross-sectional view schematically showing the situation at the end of waterproofing work.
【図１０】同横断面図である。FIG. 10 is a transverse sectional view of the same.
【図１１】従来工法を工程順に示す概略説明図である。FIG. 11 is a schematic explanatory view showing a conventional method in order of steps.
【図１２】従来工法を工程順に示す概略説明図である。FIG. 12 is a schematic explanatory view showing a conventional method in the order of steps.
【図１３】従来工法を工程順に示す概略説明図である。FIG. 13 is a schematic explanatory view showing a conventional method in order of steps.
【図１４】従来工法を工程順に示す概略説明図である。FIG. 14 is a schematic explanatory view showing a conventional method in order of steps.
【図１５】同バイパスラインの設置状況を概略的にす示
す説明図である。FIG. 15 is an explanatory diagram schematically showing the installation status of the bypass line.
（１） 容筒型防水材 （２） 底防水材 （３） 導入管 (1) Cylindrical waterproof material (2) Bottom waterproof material (3) Introductory pipe
Claims (1)
面全面に密着被覆できるような寸法の容筒形状に予め成
形されていて、上記マンホールより小口径となるように
変形加工された硬質乃至半硬質の熱可塑性合成樹脂製防
水材を用い、該防水材を変形加工状態のもとに上記マン
ホール内に挿入した後、内部より加熱加圧して元の形状
に膨脹復元させてマンホール内面に被覆する防水工法に
於て、変形加工防水材のマンホールへの挿入工程前に、 マンホールの底部を構成しているインバート部の上面
を、その通水溝にフィットする凹溝部を有する底防水材
により被覆する工程及び 上記底防水材の凹溝部内に、該凹溝部に収まるよう
な寸法、形状の導水管を設置して、下水の通水路を形成
する工程とを含み、之等工程及びを経て、上記防水
工法の適用でマンホール内全面を容筒型防水材で被覆
し、次に容筒型防水材の胴部を残したままで底部の切断
除去と、この切断除去部を作業口とする導水管の撤去と
を行なった後、容筒型防水材と底防水材とを、後者防水
材の周縁部で接着又は溶着手段の適用で一体化すること
を特徴とするマンホールの防水工法。1. A waterproof or waterproof material, which is preliminarily formed into a tubular shape having a size capable of closely covering the entire inner surface of a manhole to be constructed, and is deformed to have a smaller diameter than the manhole. A waterproof material made of a hard thermoplastic synthetic resin is used, and after the waterproof material is inserted into the manhole under a deformed state, it is heated and pressed from the inside to expand and restore the original shape to cover the inner surface of the manhole. In the waterproof method, before the insertion process of the deformed waterproof material into the manhole, the upper surface of the invert part that constitutes the bottom of the manhole is covered with a bottom waterproof material having a concave groove portion that fits the water passage groove. A step and a step of installing a water conduit having a size and shape that fits in the groove in the groove of the bottom waterproof material to form a sewage passage, Waterproofer By covering the entire surface of the manhole with a tubular waterproof material, the bottom of the tubular waterproof material is cut and removed with the body of the tubular waterproof material left, and the water conduit with the cut and removed portion as the working port is removed. And the bottom waterproof material are integrated at the peripheral edge of the latter waterproof material by applying or welding means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2418679A JPH076205B2 (en) | 1990-12-28 | 1990-12-28 | Manhole waterproofing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2418679A JPH076205B2 (en) | 1990-12-28 | 1990-12-28 | Manhole waterproofing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0610367A true JPH0610367A (en) | 1994-01-18 |
| JPH076205B2 JPH076205B2 (en) | 1995-01-30 |
Family
ID=18526473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2418679A Expired - Lifetime JPH076205B2 (en) | 1990-12-28 | 1990-12-28 | Manhole waterproofing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH076205B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012197663A (en) * | 2011-03-07 | 2012-10-18 | Sekisui Chem Co Ltd | Renovation component for public catch basin and renovation method for public catch basin |
| KR20140139573A (en) * | 2012-03-22 | 2014-12-05 | 페터 에쉔브레너 | Method for renovating a sewer manhole |
| JP2018150684A (en) * | 2017-03-10 | 2018-09-27 | アクアインテック株式会社 | Underground structure construction method and underground structure |
-
1990
- 1990-12-28 JP JP2418679A patent/JPH076205B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012197663A (en) * | 2011-03-07 | 2012-10-18 | Sekisui Chem Co Ltd | Renovation component for public catch basin and renovation method for public catch basin |
| KR20140139573A (en) * | 2012-03-22 | 2014-12-05 | 페터 에쉔브레너 | Method for renovating a sewer manhole |
| JP2018150684A (en) * | 2017-03-10 | 2018-09-27 | アクアインテック株式会社 | Underground structure construction method and underground structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH076205B2 (en) | 1995-01-30 |
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