JPH0552291A - Water cut-off construction for already constructed multiple hole electric power conduit - Google Patents
Water cut-off construction for already constructed multiple hole electric power conduitInfo
- Publication number
- JPH0552291A JPH0552291A JP21085391A JP21085391A JPH0552291A JP H0552291 A JPH0552291 A JP H0552291A JP 21085391 A JP21085391 A JP 21085391A JP 21085391 A JP21085391 A JP 21085391A JP H0552291 A JPH0552291 A JP H0552291A
- Authority
- JP
- Japan
- Prior art keywords
- packer
- grout material
- limited space
- parts
- inundation
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Pipe Accessories (AREA)
- Electric Cable Installation (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は既設多孔電力管路の止水
工法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water stopping method for an existing porous power line.
【０００２】[0002]
【従来技術とその問題点】既設の多孔電力管路は、第５
〜６図に示されるように、コンクリート製本体部（１）
と、該本体部（１）内を長さ方向に貫通する多数本、例
えば３列３段配列の貫通孔（２）とから構成され、貫通
孔（２）は通常石綿管（３）によって形成されている。
電力管路の埋設深度は通常４ｍ程度で多くの場合地下水
位以下となり、古い管路に於ては本体部（１）及び石綿
管（３）の亀裂部（４）より貫通孔（２）内に地下水が
浸入し水漏れが生じている。このような水漏れは貫通孔
（２）内へのケーブルの入線及び使用の障害となり、そ
の対策が望まれていた。2. Description of the Related Art The existing porous power line is the fifth one.
~ As shown in FIG. 6, the concrete main body (1)
And a large number of penetrating holes in the main body (1) in the length direction, for example, penetrating holes (2) arranged in three rows and three stages, the penetrating holes (2) being usually formed by an asbestos pipe (3). Has been done.
The burial depth of the power pipeline is usually about 4 m, which is below the groundwater level in most cases. In the old pipeline, the main body (1) and the asbestos pipe (3) have cracks (4) in the through hole (2). Groundwater has invaded into the area causing water leakage. Such water leakage hinders the entry and use of the cable into the through hole (2), and measures against it have been desired.
【０００３】水漏れ防水の一つの対策として第７図に示
すように例えば貫通孔（２）内の全長に亘りグラウト材
（５）を注入充填し、この注入充填圧で貫通孔（２）内
に開口している亀裂部（４）にグラウト材（５）を強制
的に圧入充填することが考えられる。この方法は亀裂部
などの地下水浸入部分の全てにグラウト材を万遍なく圧
入充填できるという有利性はあるが、圧入充填までに相
当の時間がかかるので、グラウト材として可使時間の長
い、所謂緩結性のものを使用せざるを得なくなり、緩結
性グラウト材では地下水中への流出ひいては水質に悪影
響を与える虞れがあり、あまり好ましくない。As one measure against water leakage and waterproofing, as shown in FIG. 7, for example, the grout material (5) is injected and filled over the entire length of the through hole (2), and the injection filling pressure is applied to the inside of the through hole (2). It is conceivable to forcibly press-fill the grout material (5) into the cracked portion (4) that is open at. This method has the advantage that the grout material can be uniformly press-filled into all the groundwater infiltration parts such as cracks, but since it takes a considerable amount of time to press-fit the material, the so-called long-life pot of the grout material, so-called There is no choice but to use slow-moving grout materials, and slow-moving grout materials may adversely affect runoff to groundwater and eventually water quality.
【０００４】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.
【０００５】[0005]
【問題点を解決するための手段】本発明は、コンクリー
ト製本体部と、該本体部の長さ方向に貫通する多数本の
貫通孔とを具備する既設多孔電力管路を止水処理するに
あたり、前後両端部に遠隔操作下に拡、縮されるパッカ
ー部を、また之等両パッカー部間の中間軸部にグラウト
材の注入口を、それぞれ具備するパッカーを用い、該パ
ッカーを貫通孔内に遠隔操作下に孔内移動可能に設置し
た状態で移動と停止を繰返し行ない、各停止位置に於
て、 ａ 前後の両パッカー部を拡張し、之等両パッカー部間
に限定空間を形成する操作、 ｂ 限定空間形成状態のまましばらくの間放置した後
に、限定空間内よりの流出水量確認で、浸水部有無を判
断するために、少なくとも一方のパッカー部を収縮し、
限定空間を開放する操作及び、 ｃ 浸水部“有”と判断した場合は、再び両パッカー部
を拡張状態に戻した後に、中間軸部の注入口より上記限
定空間を通じ浸水部内にグラウト材を注入充填する操
作、 とを順次行なうことを特徴とする既設多孔電力管路の止
水工法に係る。DISCLOSURE OF THE INVENTION The present invention provides a water-proof treatment for an existing porous electric power line having a concrete main body and a large number of through holes penetrating in the lengthwise direction of the main body. , A packer part which is expanded and contracted under remote control at both front and rear ends, and a grout material injection port at an intermediate shaft part between both packer parts is used. Repeatedly move and stop while being installed so that it can be moved inside the hole under remote control, and at each stop position, expand both front and rear packer parts to form a limited space between both packer parts. Operation, b. After leaving it for a while in the limited space formation state, at least one packer part is contracted to judge the presence or absence of the flooded part by checking the amount of water flowing out from the limited space,
Operation to open the limited space, and c If it is judged that the flooded part "exists", return both packer parts to the expanded state again, and then inject the grout material into the flooded part from the inlet of the intermediate shaft part through the limited space. The present invention relates to a water stoppage construction method for an existing porous electric power line, which is characterized by sequentially performing filling operation and.
【０００６】[0006]
【実施例】以下に本発明工法の一実施状況を添附図面に
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 describe one embodiment of the method of the present invention with reference to the accompanying drawings.
【０００７】本発明工法に於ては、第１図に示すように
補修対象の貫通孔（２）内に、パッカー（６）が遠隔操
作、例えばロープ（７）の牽引操作によって孔内移動可
能に設置される。In the method of the present invention, as shown in FIG. 1, the packer (6) can be moved into the through hole (2) to be repaired by remote control, for example, by pulling the rope (7). Is installed in.
【０００８】パッカー（６）は、貫通孔（２）内で浸水
個所の探査と、探査発見の浸水個所へグラウト材を注入
充填するためのものであり、前後両端部に、遠隔操作例
えばエアーの給、排操作で膨脹、収縮する前、後パッカ
ー部（８ａ）、（８ｂ）と、両パッカー部（８ａ）、
（８ｂ）間の中間軸部（９）に開口するグラウト材の注
入口（１０）とを具備し、このような構成のパッカー
（６）は、管路の継手部の補修に既に使用されており公
知である。The packer (6) is for exploring a flooded portion in the through hole (2) and for injecting and filling the grout material into the flooded portion for exploration and discovery. The front and rear packer parts (8a) and (8b), which expand and contract by supplying and discharging, and both packer parts (8a),
The packer (6) having the grout material injection port (10) opening in the intermediate shaft part (9) between (8b) is already used for repairing the joint part of the pipeline. It is well known.
【０００９】パッカー（６）は貫通孔（２）内で例えば
その長さに相当する間隔で移動と停止が繰返され、その
一つの停止位置に於て、第２図に示すように両パッカー
部（８ａ）（８ｂ）が膨脹され、之等の間に限定空間
（１１）が形成される。両パッカー部（８ａ）（８ｂ）
間の貫通孔部分（２ａ）に亀裂部が生じている場合は、
亀裂部より浸入した地下水が限定空間（１１）内に溜ま
るので、第２図に示す状態でしばらくの間放置後、第３
図に示すように、後側のパッカー部（８ｂ）を収縮し限
定空間（１１）の後端側を開放させ、流出する水量を確
認することで、亀裂部ひいては、浸水個所の有無を判別
できる。流出水量が相当量あり、浸水個所“有”と判断
した場合は、再び第２図に示す状態に戻し、中間軸部
（９）に開口している注入口（１０）より、限定空間
（１１）を通じ浸水個所にグラウト材を注入充填し、そ
の後、両パッカー部（８ａ）（８ｂ）を収縮して、第１
図に示す状態に戻す。一方流出水量が殆んどなく、浸水
個所“無”と判断した場合は、後端側に加え前端側のパ
ッカー部（８ａ）を収縮し、グラウト材の注入充填操作
なしに第１図に示す状態に戻す。The packer (6) is repeatedly moved and stopped in the through hole (2) at intervals corresponding to the length of the packer (6). At one stop position, both packer parts are accommodated as shown in FIG. (8a) and (8b) are expanded to form a limited space (11) between them. Both packer parts (8a) (8b)
If there is a crack in the through hole (2a) between
Since the groundwater infiltrated from the cracks accumulates in the limited space (11), after leaving for a while in the state shown in FIG.
As shown in the figure, by contracting the rear packer part (8b) to open the rear end side of the limited space (11) and confirming the amount of water flowing out, it is possible to determine the presence of the cracked part and thus the inundated part. .. If there is a considerable amount of runoff water and it is judged that the inundation location is “present”, the state shown in FIG. 2 is restored again, and the limited space (11) is opened from the inlet (10) opened in the intermediate shaft (9). ) Is used to inject and fill the water with the grout material, and then both packer parts (8a, 8b) are contracted to
Return to the state shown in the figure. On the other hand, when there is almost no outflow and it is judged that there is no flooded part, the packer part (8a) on the front end side is contracted in addition to the rear end side, and the filling and filling operation of the grout material is performed as shown in FIG. Return to the state.
【００１０】第１図に示す状態に戻した後は、パッカー
（６）を第１図に矢符（１２）で示す方向に一ピッチ前
進し、この前進位置で再び先と同じ操作を行なう。After returning to the state shown in FIG. 1, the packer (6) is advanced by one pitch in the direction indicated by the arrow (12) in FIG. 1, and the same operation as before is performed again at this advanced position.
【００１１】このような操作の繰返しにより、貫通孔
（２）の全長に亘り止水処理を施すことができる。By repeating such an operation, the water blocking treatment can be performed over the entire length of the through hole (2).
【００１２】本発明工法に於ては、探査で浸水部が発見
されるごとに、探査に使用したパッカー（６）を利用し
て浸水部にグラウト材を注入充填するので、グラウト材
の注入充填に要する作業時間を短縮でき、グラウト材と
して可使時間の短かい、例えば数十秒乃至数分程度のも
のを使用することが可能となり、可使時間の長いグラウ
ト材を用いる場合にみられる問題点を一掃できる。In the method of the present invention, the grout material is injected and filled in the flooded portion by using the packer (6) used for the exploration every time when the flooded portion is found by the exploration. It is possible to shorten the work time required for the grout material, and it is possible to use a grout material with a short pot life, for example, several tens of seconds to several minutes, which is a problem seen when using a grout material with a long pot life. You can wipe out the points.
【００１３】本発明に於て用いるグラウト材は可使時間
が数十秒乃至数分と短かく、所謂瞬結性であるので、主
剤と硬化剤とは、限定空間（１１）内までは個別に給送
され、限定空間（１１）内で混合される。このような瞬
結性グラウト材は、固結強度の小さい、ホモゲルタイプ
のものが、孔内残渣の排除などを考慮し適当である。Since the grout material used in the present invention has a short pot life of several tens of seconds to several minutes and has so-called instantaneous binding property, the main agent and the curing agent are individually separated into the limited space (11). And is mixed in the confined space (11). As such a quick-setting grout material, a homogel type material having a small consolidation strength is suitable in consideration of elimination of residues in the pores.
【００１４】本発明工法に於ては、作業能率の向上を目
的として、浸水の有無を最初に１０ｍ程度を一単位とし
て行ない、浸水“有”の場合は、先の仕様で浸水個所を
特定し、グラウト材注入を行ない、浸水“無”の場合
は、１０ｍ先に進むようにしてもよい。この浸水有無の
判断は、例えば、１０ｍ先でパッカー（６）の膨脹によ
り孔内を閉じ、この間の流出水量を観察することで行な
い得る。In the method of the present invention, for the purpose of improving work efficiency, the presence or absence of water infiltration is first performed in units of about 10 m, and in the case of "inundation", the inundation location is specified by the above specification. Alternatively, the grout material may be injected, and in the case of no water immersion, the water may be advanced 10 m ahead. The presence / absence of water infiltration can be determined by, for example, closing the inside of the hole by the expansion of the packer (6) 10 m ahead and observing the amount of outflow water during this period.
【００１５】本発明工法に於ては、浸水個所へのグラウ
ト材の注入充填に際し、これに隣接する貫通孔（２）内
に亀裂部（４）を通じグラウト材（５）が流出すること
を防止するために、第４図に概略的に示すように、保護
パッカー（１３）を使用してもよい。In the method of the present invention, it is possible to prevent the grout material (5) from flowing out through the crack portion (4) in the through hole (2) adjacent to the pouring of the grout material into the flooded portion. To do so, a protective packer (13) may be used, as shown schematically in FIG.
【００１６】[0016]
【効果】本発明工法に於ては、貫通孔内の浸水部に対す
るグラウト材の注入充填に要する時間を短縮でき、グラ
ウト材として可使時間の短かい所謂瞬結性のものを使用
することが可能となり、グラウト材の地下水中への流出
ひいては汚染をなくし得る特徴を有する。[Effect] In the method of the present invention, it is possible to shorten the time required for injecting and filling the grout material into the submerged portion in the through hole, and it is possible to use a so-called instantaneous binding material having a short pot life as the grout material. It is possible, and it has the characteristic that it can eliminate the outflow of grout material into the groundwater and thus the pollution.
【図１】本発明工法の作業手順を示す説明図である。FIG. 1 is an explanatory diagram showing a work procedure of a method of the present invention.
【図２】本発明工法の作業手順を示す説明図である。FIG. 2 is an explanatory diagram showing a work procedure of the method of the present invention.
【図３】本発明工法の作業手順を示す説明図である。FIG. 3 is an explanatory diagram showing a work procedure of the method of the present invention.
【図４】本発明工法の変更例を示す説明図である。FIG. 4 is an explanatory diagram showing a modified example of the method of the present invention.
【図５】既設多孔管路の構造説明図である。FIG. 5 is a structural explanatory view of an existing perforated pipeline.
【図６】既設多孔管路の構造説明図である。FIG. 6 is a structural explanatory view of an existing perforated pipeline.
【図７】本発明工法との比較工法の説明図である。FIG. 7 is an explanatory diagram of a method of comparison with the method of the present invention.
６ パッカー ７ ロープ ８ａ パッカー部 ８ｂ パッカー部 ９ 中間軸部 １０ 注入口 １１ 限定空間 6 Packer 7 Rope 8a Packer part 8b Packer part 9 Intermediate shaft part 10 Injection port 11 Limited space
Claims (1)
さ方向に貫通する多数本の貫通孔とを具備する既設多孔
電力管路を止水処理するにあたり、前後両端部に遠隔操
作下に拡、縮されるパッカー部を、また之等両パッカー
部間の中間軸部にグラウト材の注入口を、それぞれ具備
するパッカーを用い、該パッカーを貫通孔内に遠隔操作
下に孔内移動可能に設置した状態で移動と停止を繰返し
行ない、各停止位置に於て、 ａ 前後の両パッカー部を拡張し、之等両パッカー部間
に限定空間を形成する操作、 ｂ 限定空間形成状態のまましばらくの間放置した後
に、限定空間内よりの流出水量確認で、浸水部有無を判
断するために、少なくとも一方のパッカー部を収縮し、
限定空間を開放する操作及び、 ｃ 浸水部“有”と判断した場合は、再び両パッカー部
を拡張状態に戻した後に、中間軸部の注入口より上記限
定空間を通じ浸水部内にグラウト材を注入充填する操
作、 とを順次行なうことを特徴とする既設多孔電力管路の止
水工法。1. When water-stopping an existing porous power line having a concrete main body and a large number of through-holes penetrating in the lengthwise direction of the main body, the front and rear ends are remotely controlled. A packer equipped with a packer part to be expanded and contracted and a grout material injection port in the intermediate shaft part between both packer parts can be moved into the through hole by remote control inside the hole. Repeatedly moving and stopping at the state of being installed at each position, at each stop position, a. Expand both front and rear packer parts to form a limited space between both packer parts, b. After leaving it for a while, at least one packer part is contracted in order to judge the presence or absence of the flooded part by checking the amount of water flowing out from the limited space,
Operation to open the limited space, and c If it is judged that the flooded part "exists", return both packer parts to the expanded state again, and then inject the grout material into the flooded part from the inlet of the intermediate shaft part through the limited space. A method of stopping water in an existing porous power line, which is characterized in that the filling operation and the step are sequentially performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21085391A JPH07111237B2 (en) | 1991-08-22 | 1991-08-22 | Water stopping method for existing porous power lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21085391A JPH07111237B2 (en) | 1991-08-22 | 1991-08-22 | Water stopping method for existing porous power lines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0552291A true JPH0552291A (en) | 1993-03-02 |
| JPH07111237B2 JPH07111237B2 (en) | 1995-11-29 |
Family
ID=16596191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21085391A Expired - Lifetime JPH07111237B2 (en) | 1991-08-22 | 1991-08-22 | Water stopping method for existing porous power lines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07111237B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007332982A (en) * | 2006-06-12 | 2007-12-27 | Hitachi Metals Ltd | Passage blocking tool, and updating method of supply pipe |
| CN110966481A (en) * | 2019-11-21 | 2020-04-07 | 中电建生态环境集团有限公司 | Pressure pipeline repairing construction method |
-
1991
- 1991-08-22 JP JP21085391A patent/JPH07111237B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007332982A (en) * | 2006-06-12 | 2007-12-27 | Hitachi Metals Ltd | Passage blocking tool, and updating method of supply pipe |
| CN110966481A (en) * | 2019-11-21 | 2020-04-07 | 中电建生态环境集团有限公司 | Pressure pipeline repairing construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07111237B2 (en) | 1995-11-29 |
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