JP3283492B2 - Pipe laying method - Google Patents
Pipe laying methodInfo
- Publication number
- JP3283492B2 JP3283492B2 JP25300399A JP25300399A JP3283492B2 JP 3283492 B2 JP3283492 B2 JP 3283492B2 JP 25300399 A JP25300399 A JP 25300399A JP 25300399 A JP25300399 A JP 25300399A JP 3283492 B2 JP3283492 B2 JP 3283492B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- groove
- tube
- groove width
- integrated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Description
【0001】[0001]
【発明の属する技術分野】本発明は、安定液で満たされ
た溝内に管体を吊り降ろし沈設する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for suspending and lowering a pipe in a groove filled with a stabilizing liquid.
【0002】[0002]
【従来の技術】近年、下水道管や函渠(ボックスカルバ
ート)などの管体を溝孔内に沈設して埋設するに際し
て、溝孔内に一本ごと管体を沈下させて連結をいわゆる
開削方法に代えて、複数本の管体群を安定液で満たした
掘削溝内に沈設し、相互を、あるいは人孔(マンホー
ル)と接続する方法が、特に都市における交通の停止を
最小限に抑えるために汎用されている。2. Description of the Related Art In recent years, when a pipe such as a sewer pipe or a culvert (box culvert) is sunk into a slot and buried, the pipe is sunk down one by one in the slot and the connection is a so-called open-cutting method. Alternatively, a method of submerging multiple pipe groups in a trench filled with stabilizing liquid and connecting them to each other or to manholes can minimize traffic interruptions, especially in urban areas. It has been widely used.
【0003】かかる安定液掘削による沈埋工法の概要に
ついて説明すると、まず、図1に示すように、管体Pの
沈埋位置および人孔部M,Mの両側に、ガイドウォール
1,1を構築する。次いで、図示しないが、ガイドウォ
ール1,1間における始端側人孔部Mから所定距離を、
例えば次の人孔部Mまでをパワーショベルなどにより、
ベントナイト泥水などの安定液Bを充填しながら掘削溝
Dを掘削するとともに、この掘削溝Dの少なくとも始端
がわの人孔部Mに人孔2を沈設する。[0003] The outline of the submerging method by the stable liquid excavation will be described. First, as shown in Fig. 1, guide walls 1, 1 are constructed at the submerged position of a pipe P and on both sides of a human hole M, M. . Next, although not shown, a predetermined distance from the starting end side human hole M between the guide walls 1 and 1 is set.
For example, up to the next human hole M with a power shovel
The excavation groove D is excavated while filling the stable liquid B such as bentonite muddy water, and the human hole 2 is laid down at least in the human hole M at the starting end of the excavation groove D.
【0004】他方、地上にて、図2および図3に示すよ
うに、複数本の管体P,P,…に、補強および重力増加
を目的として、溝形鋼等の上部支持材3、H形鋼等の下
部支持材4を当てがい、これをワイヤー5などにより管
体Pにも巻き掛けて一体化させる。また、この一体化連
結管体PUの上部支持材3上面には、カップラー6を長
手方向に間隔をおいて複数固着し、これらカップラー6
に位置監視用および吊り支持用のゲビン棒7を螺合させ
ておく。On the ground, on the ground, as shown in FIGS. 2 and 3, a plurality of pipes P, P,... A lower support member 4 such as a shaped steel is applied, and the lower support member 4 is wound around a pipe P with a wire 5 or the like to be integrated. A plurality of couplers 6 are fixed to the upper surface of the upper support member 3 of the integrated connection pipe PU at intervals in the longitudinal direction.
A screw thread 7 is screwed with a Gevin rod 7 for position monitoring and hanging support.
【0005】かかる段取りが完了した後、例えば、構造
体として組み立てた門型クレーン足場8を支持体とし
て、チェーンブロック9Aにより連結管体PUに巻きつ
けられているワイヤー5を介して連結管体PUを吊り支
持し、チェーン9Bによる支持を順次落とし下げ、人孔
2の接続すべき位置まで吊り降ろし沈下させる。この沈
下完了状態が図2に示されている。しかる後、図示しな
いが、ガイドウォール1,1間に架設された架設部材と
ゲビン棒7とを連結し、連結管体PUを吊り支持する。[0005] After the completion of the setup, for example, using the portal crane scaffold 8 assembled as a structure as a support, the connecting pipe PU via the wire 5 wound around the connecting pipe PU by the chain block 9A. Is suspended, and the support by the chain 9B is sequentially dropped, and is suspended and lowered to a position where the human hole 2 is to be connected. FIG. 2 shows this subsidence completion state. Thereafter, although not shown, the erection member erected between the guide walls 1 and 1 and the Gevin bar 7 are connected, and the connection pipe PU is suspended and supported.
【0006】次いで、連結管体PUが設計位置(深さ方
向位置、および溝幅方向位置)に吊り支持されているか
否かを、安定液面から突出するゲビン棒7、および管体
の所定部位に対して連結糸を介して繋いだウキFの位置
によって確認する。管体の沈設位置がズレている場合に
は、沈設管体の側方にH形鋼を建込み、これを管体の側
面に押し当て溝幅方向に移動させる等して沈設位置を調
整する。Next, whether or not the connecting pipe PU is suspended and supported at the design position (depth direction position and groove width direction position) is determined by the Gevin rod 7 projecting from the stable liquid level and the predetermined portion of the pipe body. Is confirmed by the position of the uki F connected via the connecting yarn. When the sunk position of the pipe is shifted, an H-section steel is erected on the side of the sunk pipe, and the H-section steel is pressed against the side of the pipe and moved in the groove width direction to adjust the sunk position. .
【0007】しかる後、掘削溝D内の安定液B中にセメ
ントミルク等の硬化材を注入するとともにエア攪拌を行
い、安定液Bの固化を図る。この固化の完了および1週
間程度の養生期間を待って、人孔2内に作業員が潜入
し、図4に示すように固化泥水部分を狸掘して人孔2と
管体Pとの間を貫通させ、この貫通路に、人孔2内から
接続用の短管P’を挿入し、さらに短管P’の周囲の空
隙にモルタルを充填して、止水を図る。After that, a hardening material such as cement milk is poured into the stabilizing liquid B in the excavation groove D and the air is stirred to solidify the stabilizing liquid B. After the completion of the solidification and a curing period of about one week, a worker infiltrates the human hole 2 and digs the solidified muddy water portion as shown in FIG. The short pipe P 'for connection is inserted from the inside of the human hole 2 into this through-passage, and the space around the short pipe P' is filled with mortar to stop water.
【0008】[0008]
【発明が解決しようとする課題】しかし、かかる従来工
法における吊り支持物(沈設管体)の位置調整は、手間
がかかるといった問題点があった。However, the position adjustment of the suspended support (submerged pipe) in the conventional method has a problem that it takes time and effort.
【0009】したがって、本発明の主たる課題は、管体
を溝内の所定位置に簡易に位置決めできるようにするこ
とにある。Therefore, a main object of the present invention is to make it possible to easily position a tube at a predetermined position in a groove.
【0010】[0010]
【課題を解決するための手段】上記課題を解決した本発
明のうち、請求項1記載の発明は、安定液で満たされた
溝内に管体を吊り降ろし沈設する方法であって;前記管
体の長手方向に間隔を置いて2ヶ所以上の位置におい
て、前記管体における溝幅方向の両側部に、それぞれに
スペーサーを管体の側面からの張出量が等しくなるよう
に一体化するとともに、この一体化管体における前記ス
ペーサーを一体化した部位の幅を、管体沈設予定位置の
溝幅と実質的に等しくなし、しかる後、前記一体化管体
を溝内に嵌め入れ前記安定液中に沈設するとともに、前
記スペーサーは、撓みによって少なくとも溝幅方向の弾
性を有し、溝幅方向の幅が若干収縮可能とされているこ
とを特徴とする管体の沈設方法である。According to the present invention, there is provided a method of suspending and lowering a pipe in a groove filled with a stabilizing liquid, the method comprising: At two or more locations spaced apart in the longitudinal direction of the body, spacers are integrated on both sides in the groove width direction of the tubular body such that the amount of protrusion from the side surface of the tubular body is equal to each other. The width of the portion where the spacers are integrated in the integrated pipe is made substantially equal to the groove width at the position where the pipe is to be laid, and then the integrated pipe is fitted in the groove and the stable liquid is inserted. A method of laying down a tube, wherein the tube is sunk inside and the spacer has elasticity at least in a groove width direction by bending, and the width in the groove width direction is slightly contractible.
【0011】請求項2記載の発明は、前記管体の上部に
は上部支持材が、下部には下部支持材がそれぞれ固定さ
れており、前記スペーサーは、前記上部支持材および下
部支持材間に管体側部外方を回って架設された、管体外
面から離間した弓状部材である請求項1記載の管体の沈
設方法である。According to a second aspect of the present invention, an upper supporting member is fixed to an upper portion of the tubular body, and a lower supporting member is fixed to a lower portion, and the spacer is provided between the upper supporting member and the lower supporting member. 2. The method according to claim 1, wherein the arcuate member is provided around the outer side of the tubular body and is spaced apart from the outer surface of the tubular body.
【0012】[0012]
【0013】[0013]
【0014】<作用>本発明においては、管体は側部の
スペーサーによって溝内に対して嵌め入れられるので、
吊り降ろし沈設後の位置調整を要せずに、溝内の所定位
置に自動的に位置決めされる。よって、管体の位置決め
が簡易となる。<Operation> In the present invention, since the pipe is fitted into the groove by the spacer on the side,
It is automatically positioned at a predetermined position in the groove without the need for position adjustment after hanging down and setting. Therefore, the positioning of the tube is simplified.
【0015】[0015]
【発明の実施の形態】以下、本発明の実施の形態につい
て、安定液掘削による沈埋工法への適用例に基づき詳説
する。図5および図6には、安定液Bで満たされた掘削
溝D内に、本発明のスペーサー10,10を取り付けた
一体化連結管体PUを嵌め入れ沈設した状態が示されて
おり、以下では同状態までの工程およびその後の工程に
ついて順に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail based on an example of application to a burial method by stable liquid excavation. FIGS. 5 and 6 show a state where the integrated connecting pipe body PU with the spacers 10 and 10 of the present invention fitted therein is sunk in the excavation groove D filled with the stabilizing liquid B. The steps up to this state and the subsequent steps will be described in order.
【0016】先ず、前述従来例と同様にガイドウォール
1の構築および掘削溝Dの安定液掘削を行うとともに、
掘削溝Dの始端部に人孔2を設置する。なお、図示例の
溝幅は、溝長手方向および溝深さ方向に一定となってい
る。First, the construction of the guide wall 1 and the excavation of the stable liquid in the excavation groove D are performed in the same manner as in the conventional example.
The human hole 2 is installed at the beginning of the excavation groove D. The groove width in the illustrated example is constant in the groove longitudinal direction and the groove depth direction.
【0017】一方、地上では、例えば前述従来例と同様
に一体化連結管体PUを組立てる。そして例えばこの際
に、本発明のスペーサー10L,10Rを一体化連結管
体PUにおける溝幅方向の側部に一体化し、このスペー
サー10L,10Rを一体化した部位の一体化連結管体
PUの幅を、管体沈設予定位置の溝幅W1と実質的に等
しくする。本例では、管体PUを溝幅方向中央に位置決
めするべく、管体PUにおける溝幅方向の一方がわ側部
およびその反対がわ側部の両方に、背中合わせにスペー
サー10L,10Rをそれぞれ一体化するとともに、こ
の一体化管体PUにおけるスペーサー10L,10Rを
一体化した部位の幅を管体沈設予定位置の溝幅W1と実
質的に等しくし、かつ一方側のスペーサー10Lの管体
側面からの張出量W2と他方側の管体側面からの張出量
W3とが等しくなるようにしている。On the other hand, on the ground, for example, an integrated connecting pipe body PU is assembled in the same manner as in the above-mentioned conventional example. Then, for example, at this time, the spacers 10L and 10R of the present invention are integrated with the side in the groove width direction of the integrated connecting pipe PU, and the width of the integrated connecting pipe PU at the portion where the spacers 10L and 10R are integrated. Is substantially equal to the groove width W1 at the position where the pipe is to be laid. In this example, spacers 10L and 10R are integrated with both sides of the tube PU in the groove width direction in the groove width direction so as to position the tube PU at the center in the groove width direction. At the same time, the width of the part where the spacers 10L and 10R are integrated in this integrated pipe PU is made substantially equal to the groove width W1 at the position where the pipe is to be laid, and from the side of the pipe of the spacer 10L on one side. Overhang amount W2 is equal to the overhang amount W3 from the other tubular body side surface.
【0018】本例のように一体化連結管体PUの長手方
向両端が自由端とされている場合には、上述の一組のス
ペーサー10L,10Rを、図示例のように管体長手方
向に間隔を置いて2ヶ所以上設けるか、あるいは図示し
ないが、管体PUが溝Dの両側壁による支持により平面
方向にスライドまたは回転移動しなくなる程度の長さだ
け管体長手方向に沿って、例えば管体先端部から基端部
まで連続するように設けるのが好ましい。When the both ends in the longitudinal direction of the integrated connecting pipe PU are free ends as in this example, the above-mentioned pair of spacers 10L and 10R are connected in the longitudinal direction of the pipe as shown in FIG. Two or more places are provided at intervals, or not shown, but along the longitudinal direction of the pipe, such that the pipe PU does not slide or rotate in the planar direction due to the support by the side walls of the groove D, for example, It is preferable to provide the tube body from the distal end to the proximal end so as to be continuous.
【0019】さらに本例のスペーサー10L,10R
は、請求項4記載の発明に従って、上部支持材3および
下部支持材4間に管体PUの側部外方を回って架設され
た、管体PUの外面から離間した張出部材(図示例では
平鋼等の板材を断面弓状に曲げ形成したものであるが、
棒鋼等の棒材を弓状に曲げ形成したものも用いることも
できる)であり、かつその撓みによって溝幅方向の弾性
を有し、溝幅方向に収縮可能とされているものである。
スペーサー10L,10Rは支持材3,4に対して溶接
やボルト固定等により強固に固定する。Further, the spacers 10L, 10R of this embodiment
According to the invention described in claim 4, a projecting member spaced from the outer surface of the tube body PU and provided between the upper support member 3 and the lower support member 4 so as to extend around the side of the tube body PU (illustrated example) In this example, a plate material such as flat steel is bent into an arcuate cross section.
It is also possible to use a bar material such as a steel bar which is bent in an arc shape), and has elasticity in the groove width direction due to the bending thereof, and can be contracted in the groove width direction.
The spacers 10L and 10R are firmly fixed to the support members 3 and 4 by welding, bolting, or the like.
【0020】かかる段取りが完了したならば、連結管体
PUを例えば前述従来例と同様に吊り降ろし装置30に
よって溝上方の吊り元を支点として吊下げ、管体沈埋用
の掘削溝部内に安定液B中の所定位置に嵌め入れ沈設す
る。When the setup is completed, the connecting pipe PU is suspended by the suspension apparatus 30 using the suspension above the groove as a fulcrum, for example, in the same manner as in the conventional example, and the stable liquid is placed in the excavation groove for submerging the pipe. B is inserted into a predetermined position in B and is sunk.
【0021】前述のとおり、管体PUにおける溝幅方向
の一方がわ側部およびその反対がわ側部の両方に、スペ
ーサー10L,10Rがそれぞれ一体化されているとと
もに、一体化管体PUにおけるスペーサー10L,10
Rを一体化した部位の幅を管体沈設予定位置の溝幅W1
と実質的に等しくし、かつ各スペーサー10L,10R
の管体側面からの張出量W2,W3が等しくなるように
しているので、所定深度まで嵌め入れ沈設した後におい
ては、管体PUは溝幅方向の中央に自動的に位置決めさ
れることになる。また、前述のとおりスペーサー10
L,10Rは溝幅方向の弾性を有しており同方向に若干
収縮可能である。よって、例えば溝幅が局所的に狭くな
っていても、当該溝幅が狭い部位において溝側壁との衝
突によりスペーサーが溝幅方向に若干収縮することがで
きるので、かかる場合においても一体化管体PUを溝内
の所定位置まで円滑に嵌め入れることができる。As described above, the spacers 10L and 10R are integrally formed on both the one side in the groove width direction and the opposite side in the groove width direction of the tube PU. Spacers 10L, 10
The width of the part where R is integrated is set to the groove width W1
And each spacer 10L, 10R
Since the overhang amounts W2 and W3 from the side of the pipe body are made equal, the pipe body PU is automatically positioned at the center in the groove width direction after being fitted and sunk to a predetermined depth. Become. Also, as described above, the spacer 10
L and 10R have elasticity in the groove width direction and can be slightly contracted in the same direction. Therefore, for example, even if the groove width is locally reduced, the spacer can slightly shrink in the groove width direction due to collision with the groove side wall in the narrow groove width portion. The PU can be smoothly fitted into a predetermined position in the groove.
【0022】そしてかかる位置決め後、例えば、ゲビン
棒7,7…を目安として沈設物の位置を確認し、さらに
トランシット等の測量器械を用いて絶対位置を確認す
る。その結果、一体化連結管体PUを所定の位置に位置
決めされていたならば、例えば図7に示すように、ガイ
ドウォール1,1間に架設された架設部材20にゲビン
棒7を貫通させ、その貫通部にナット21を螺合させる
ことで架設部材20とゲビン棒7とを連結し、連結管体
PUを、架設部材20を介してガイドウォール1により
吊り支持した後、吊り装置30による吊り支持を解除す
る。After the positioning, for example, the position of the sediment is confirmed using the Gevin bars 7, 7,..., And the absolute position is confirmed using a measuring instrument such as a transit. As a result, if the integrated connecting pipe body PU is positioned at a predetermined position, for example, as shown in FIG. 7, the Gevin rod 7 is passed through the erection member 20 erected between the guide walls 1 and 1, The installation member 20 and the Gevin bar 7 are connected by screwing a nut 21 into the penetrating portion, and the connection pipe PU is suspended and supported by the guide wall 1 via the construction member 20, and then suspended by the suspension device 30. Release support.
【0023】しかる後、例えば前述従来例と同様に安定
液Bの固化を図り、固化完了および所定の養生期間を待
って、人孔2と連結管体PUとを連通させる。スペーサ
ー10,10は固化体内に埋め殺しとする。Thereafter, for example, the stabilizing solution B is solidified in the same manner as in the above-mentioned conventional example, and after the solidification is completed and a predetermined curing period is established, the human hole 2 and the connection pipe PU are communicated. The spacers 10, 10 are buried in the solidified body.
【0024】<その他> (イ)本発明におけるスペーサー10L,10Rは、管
体PUの沈設に先立って管体側面に対する張出幅W2,
W3を個別に或いは連動させて微調整できるように構成
することもできる。<Others> (A) The spacers 10L and 10R according to the present invention have an overhang width W2 with respect to the side surface of the tube prior to the sinking of the tube PU.
W3 may be configured to be finely adjusted individually or in conjunction with each other.
【0025】(ロ)スペーサー10L,10Rとして
は、上記例のように鋼製のもののほか、ゴム製や樹脂製
のものなどを用いることができる。ゴム製や樹脂製等の
弾性材で形成したスペーサー10L,10Rはその材料
自体が弾性を有しており溝幅方向の収縮が可能である。
一方、鋼製スペーサーなど高剛性のものにおいては、上
記例のように溝幅方向の収縮が可能なように弓状(板バ
ネ状)に曲げ形成するなど、弾性作用を示す適宜の形状
とすることで、溝幅方向の収縮が可能となる。(B) As the spacers 10L and 10R, in addition to the spacers made of steel as in the above example, those made of rubber or resin can be used. The spacers 10L and 10R made of an elastic material such as rubber or resin have elasticity themselves and can contract in the groove width direction.
On the other hand, in the case of a highly rigid material such as a steel spacer, an appropriate shape exhibiting an elastic effect is formed, for example, by bending into a bow shape (leaf spring shape) so as to be able to contract in the groove width direction as in the above example. Thereby, contraction in the groove width direction becomes possible.
【0026】(ハ)本発明においては、溝Dの側面は傾
斜していても、鉛直方向に沿っていても良い。また、溝
幅W1は溝長手方向に実質的に同一とするのが好まし
い。さらに、溝Dの両側壁は平行に形成するのが好まし
い。(C) In the present invention, the side surface of the groove D may be inclined or may extend along the vertical direction. Preferably, the groove width W1 is substantially the same in the longitudinal direction of the groove. Further, both side walls of the groove D are preferably formed in parallel.
【0027】[0027]
【発明の効果】以上のとおり本発明によれば、管体を溝
内の所定位置に簡易に位置決めできるようになる。As described above, according to the present invention, the tube can be easily positioned at a predetermined position in the groove.
【図1】従来のガイドウォールの構築ならびに掘削溝の
掘削形態を示す、平面図である。FIG. 1 is a plan view showing a conventional guide wall construction and an excavation form of an excavation trench.
【図2】従来の管体の吊り降ろし工程を示す、縦断面図
である。FIG. 2 is a vertical cross-sectional view showing a conventional tube hanging process.
【図3】従来の管体の吊り降ろし工程を他の方向から示
した、縦断面図である。FIG. 3 is a vertical cross-sectional view showing a conventional tube hanging process from another direction.
【図4】従来の人孔および管体の接続工程を示す、縦断
面図である。FIG. 4 is a longitudinal sectional view showing a conventional process of connecting a human hole and a tube.
【図5】本発明に係る、スペーサーを取り付けた管体の
吊り降ろし沈設後の状態を示す、縦断面図である。FIG. 5 is a vertical cross-sectional view showing a state after hanging down and laying down a pipe body with a spacer according to the present invention.
【図6】本発明に係る、スペーサーを取り付けた管体の
吊り降ろし沈設後の状態を側面方向から示した、縦断面
図である。FIG. 6 is a longitudinal cross-sectional view showing a state after hanging down and laying down a pipe body to which a spacer is attached according to the present invention, viewed from the side.
【図7】管体の位置決め後の状態を示す、縦断面図であ
る。FIG. 7 is a longitudinal sectional view showing a state after positioning of the tube.
1…ガイドウォール、2…人孔、3…上部支持材、4…
下部支持材、10…スペーサー、PU…一体化連結管
体、B…安定液、D…掘削溝、W1…溝幅、W2,W3
…張出量。DESCRIPTION OF SYMBOLS 1 ... Guide wall, 2 ... Human hole, 3 ... Upper support material, 4 ...
Lower support material, 10: spacer, PU: integrated connecting pipe, B: stable liquid, D: excavation groove, W1: groove width, W2, W3
... the amount of overhang.
Claims (2)
し沈設する方法であって; 前記管体の長手方向に間隔を置いて2ヶ所以上の位置に
おいて、前記管体における溝幅方向の両側部に、それぞ
れにスペーサーを管体の側面からの張出量が等しくなる
ように一体化するとともに、この一体化管体における前
記スペーサーを一体化した部位の幅を、管体沈設予定位
置の溝幅と実質的に等しくなし、 しかる後、前記一体化管体を溝内に嵌め入れ前記安定液
中に沈設するとともに、 前記スペーサーは、撓みによって少なくとも溝幅方向の
弾性を有し、溝幅方向の幅が若干収縮可能とされている
ことを特徴とする管体の沈設方法。1. A method for suspending and lowering a pipe in a groove filled with a stabilizing liquid, wherein a groove width in the pipe at two or more positions spaced apart in a longitudinal direction of the pipe. At both sides in the direction, the spacers are integrated so that the amount of protrusion from the side of the tube is equal to each other, and the width of the part where the spacers are integrated in this integrated tube is scheduled to be set in the tube. Not substantially equal to the groove width at the position, and thereafter, the integrated pipe body is fitted into the groove and settled in the stabilizing liquid, and the spacer has at least elasticity in the groove width direction by bending, A method for laying down a tube, characterized in that the width in the groove width direction can be slightly contracted.
は下部支持材がそれぞれ固定されており、 前記スペーサーは、前記上部支持材および下部支持材間
に管体側部外方を回って架設された、管体外面から離間
した弓状部材である請求項1記載の管体の沈設方法。2. An upper support member is fixed to an upper portion of the tube body, and a lower support member is fixed to a lower portion thereof. The spacer is provided between the upper support member and the lower support member so as to extend outwardly of the side of the tube. 2. The method for laying down a pipe according to claim 1, wherein the pipe is a bow-shaped member which is erected around the outer surface of the pipe.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25300399A JP3283492B2 (en) | 1999-09-07 | 1999-09-07 | Pipe laying method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25300399A JP3283492B2 (en) | 1999-09-07 | 1999-09-07 | Pipe laying method |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2001073442A JP2001073442A (en) | 2001-03-21 |
JP3283492B2 true JP3283492B2 (en) | 2002-05-20 |
Family
ID=17245147
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP25300399A Expired - Fee Related JP3283492B2 (en) | 1999-09-07 | 1999-09-07 | Pipe laying method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3283492B2 (en) |
-
1999
- 1999-09-07 JP JP25300399A patent/JP3283492B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2001073442A (en) | 2001-03-21 |
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