JP3978746B2

JP3978746B2 - Tube installation method

Info

Publication number: JP3978746B2
Application number: JP2003096641A
Authority: JP
Inventors: 郁夫堤
Original assignee: 堤郁夫
Priority date: 2003-03-31
Filing date: 2003-03-31
Publication date: 2007-09-19
Anticipated expiration: 2023-03-31
Also published as: JP2004300833A

Description

【０００１】
【発明の属する技術分野】
本発明は、ガス管や水道管等の管体を設置する方法に関するものである。
【０００２】
【従来の技術及び発明が解決しようとする課題】
ガス管や水道管等の管体を設置する方法としては、発進立坑及び到達立坑の掘削を行い、発進立坑にシールド装置（掘削装置）を設置し、このシールド装置により該発進立坑から到達立坑に向けて地山に横穴を穿設し、更に、このシールド装置の後部に管材を配置し（この管材は、組み立てが不要なものでも、組み立てが必要なものでも、どちらでも採用することができる。）、この管材の後部にジャッキ装置を設け、ジャッキ装置の伸長によってシールド装置及び管材を推進させ、続いて、ジャッキ装置を収縮し、このジャッキ装置の収縮によって形成した空間部に新たに管材を配設し、続いて、ジャッキ装置の伸長によって該新たに配設した管材，既に横穴に配設されている管材及びシールド装置を推進させ、これを繰り返して複数の管材が連設された管体を設置する方法（所謂推進工法）が広く採用されている。
【０００３】
しかし、この従来の推進工法においては、ガス管や水道管等の管体に地山の土圧が直接作用するため、該管体に歪み，破損が生じやすいという問題がある。
【０００４】
そこで、このような土圧による不具合を解消するために、前記管材を、設置目的物であるガス管や水道管等とこのガス管や水道管等を保護するため該ガス管や水道管等に被嵌される径大外管とで構成する二重管材とし、該二重管材を前記横穴に設置する方法が提案されている。
【０００５】
この二重管材を用いる方法は、径大外管には前記土圧が作用するが、ガス管や水道管等の設置目的物には土圧が作用せず、該ガス管や水道管に歪み，破損が生じない。
【０００６】
しかし、この方法は、径大外管の分、二重管材の製作に多くの手間と費用がかかることになり、当然ながら通常の管材（一重管材）を用いた場合よりコスト高とならざるを得ない。しかも、この多くの手間と費用をかけて製作した二重管材の径大外管は埋められたままとなっており、無駄が多い。
【０００７】
本発明は、上述のような現状に鑑みて成されたもので、ガス管や水道管等の設置目的物を設置する際に、該設置目的物に土圧が作用せず、尚且つコスト安で施工を行うことができる実用性及び効率性に秀れた管体設置方法を提供するものである。
【０００８】
【課題を解決するための手段】
添付図面を参照して本発明の要旨を説明する。
【０００９】
所定間隔を置いた発進立坑10ａ及び到達立坑10ｂの間の地山７に掘削装置１で横穴６を穿設し、この横穴６に複数の管材を配設して該地山７に該複数の管材が連設された管体Ａを設置する方法であって、前記掘削装置１として泥水式掘削装置を採用し、先端に前記掘削装置１が設けられ、径小内管４と該径小内管４に被嵌される径大外管５とから成り、この径小内管４と径大外管５との間に送泥管 12 ａ及び排泥管 12 ｂが配設された二重管材２を発進立坑10ａに配設し、この二重管材２を押圧することで先端側に推進させ、順次前記二重管材２を連設し同様に推進させて前記発進立坑10ａ及び到達立坑10ｂの間に、連設された複数の前記二重管材２を設置した後、この二重管材２の径大外管５と送泥管 12 ａ及び排泥管 12 ｂとを共に前記発進立坑10ａ若しくは到達立坑10ｂから引動して取り出し除去することで前記地山７に複数の径小内管４が連設された管体Ａを設置することを特徴とする管体設置方法に係るものである。
【００１０】
また、所定間隔を置いた発進立坑10ａ及び到達立坑10ｂの間の地山７に掘削装置１で横穴６を穿設し、この横穴６に複数の管材を配設して該地山７に該複数の管材が連設された管体Ａを設置する方法であって、前記掘削装置１として泥水式掘削装置を採用し、先端に前記掘削装置１が設けられた径大外管５を前記発進立坑10ａに配設すると共に、この径大外管５の内側にして後記径小内管４の外側となる位置に送泥管 12 ａ及び排泥管 12 ｂを配設し、この径大外管５を押圧することで先端側に推進させ、順次前記径大外管５を連設し同様に推進させて前記発進立坑10ａ及び到達立坑10ｂの間に、連設された複数の前記径大外管５を設置し、続いて、この連設された複数の前記径大外管５内に複数の前記径小内管４を連設状態で配設した後、この径大外管５と送泥管 12 ａ及び排泥管 12 ｂとを共に前記発進立坑10ａ若しくは到達立坑10ｂから引動して取り出し除去することで前記地山７に複数の前記径小内管４が連設された管体Ａを設置することを特徴とする管体設置方法に係るものである。
【００１１】
また、請求項１，２いずれか１項に記載の管体設置方法において、前記発進立坑10ａに推進用のジャッキ装置16ａを配設したことを特徴とする管体設置方法に係るものである。
【００１２】
また、請求項１，２いずれか１項に記載の管体設置方法において、前記径大外管５を到達立坑10ｂから取り出し除去することを特徴とする管体設置方法に係るものである。
【００１３】
また、請求項４記載の管体設置方法において、前記径大外管５の内側にして前記径小内管４の外側となる位置には貫通連結体９が設けられており、更に、この各貫通連結体９は連設可能に構成され、更に、この貫通連結体９の基部は基端位置の前記径大外管５と連設可能に構成され、各貫通連結体９を連設すると共に、連設された前記貫通連結体９の基部を基端位置の前記径大外管５に連設し、連設された前記貫通連結体９の先端を前記到達立坑10ｂから引動することで前記径大外管５を前記到達立坑10ｂから取り出し除去することを特徴とする管体設置方法に係るものである。
【００１４】
また、請求項５記載の管体設置方法において、前記到達立坑10ｂに前記ジャッキ装置16ｂを配設し、このジャッキ装置16ｂにより前記径大外管５を引動することを特徴とする管体設置方法に係るものである。
【００１５】
また、請求項１〜６いずれか１項に記載の管体設置方法において、前記径大外管５を取り出し除去することにより現出する前記径小内管４と前記地山７との間隙に充填剤８を充填することを特徴とする管体設置方法に係るものである。
【００１６】
また、請求項１〜７いずれか１項に記載の管体設置方法において、前記発進立坑 10 ａの側壁にして前記横穴６を穿設する位置に該側壁の破損を防止するリング体 20 を設け、該リング体 20 に掘削装置１側から流れてくる泥水が前記発進立坑 10 ａ内に侵入することを阻止するパッキン 24 を設けた後、前記リング体 20 及び前記パッキン 24 に前記掘削装置１を挿通して前記横穴６を穿設することを特徴とする管体設置方法に係るものである。
【００１７】
【発明の作用及び効果】
設置目的物であるガス管や水道管等の径小内管４を設置する際、径小内管４の外方には径大外管５が存在するから、この径大外管５のみが地山７からの土圧を受けることになり、よって、該径小内管４に歪み，破損は生じない。
【００１８】
また、径小内管４の設置後には必要な該径小内管４を残して径大外管５を取り出し除去し、この径大外管５を異なる管体Ａを設置するために再利用する。
【００１９】
即ち、最も地山７の土圧を受ける管材の推進時には、歪みや破損を生じさせたくない径小内管４を径大外管５によって保護するから、この径小内管４には歪みや破損は発生せず、また、この径小内管４を保護する径大外管５は推進後に取り出し除去して再利用するから、この径小内管４と径大外管５とによる管体Ａの設置は、コスト安で効率的に行うことができる。
【００２０】
従って、本発明は、外管を利用して容易且つ確実に管体を設置できるだけでなく、この外管を再利用することで施工をコスト安に行える極めて実用性及び効率性に秀れた管体設置方法を提供できることとなる。
【００２１】
【発明の実施の形態】
図面は本発明の第一実施例を図示したものであり、以下に説明する。尚、第一実施例は請求項１の実施例である。
【００２２】
第一実施例は、所定間隔を置いた発進立坑10ａ及び到達立坑10ｂの間の地山７に掘削装置１で横穴６を穿設し、この横穴６に複数の管材を配設して該地山７に該複数の管材が連設された管体Ａを設置する方法であって、管材として径小内管４と該径小内管４に被嵌される径大外管５とから成る二重管材２を採用し、先端に前記掘削装置１を設けた二重管材２を発進立坑10ａに配設し、該二重管材２を押圧することで先端側に推進させ、順次二重管材２を連設し同様に推進させて前記発進立坑10ａ及び到達立坑10ｂの間に、連設された複数の二重管材２を設置した後、該二重管材２の径大外管５を前記到達立坑10ｂから引動して取り出し除去することで地山７に複数の径小内管４が連設された管体Ａを設置する方法である。
【００２３】
具体的には、先ず、管体Ａを配置する区間の前後両端部に所定深さの発進立坑10ａ及び到達立坑10ｂを夫々穿設する。尚、既設の立坑を利用しても良い。
【００２４】
続いて、発進立坑10ａにジャッキ装置16ａ（推進ジャッキ）を設置する。このジャッキ装置16ａはピストン21とシリンダ22とから成るものが採用されている。
【００２５】
続いて、この発進立坑10ａに掘削装置１を配置し、この掘削装置１での掘削及び前記ジャッキ装置16ａの伸長により該掘削装置１を前記発進立坑10ａの側壁から地山７に導入することで横穴６の穿設を開始する。
【００２６】
掘削装置１は、切羽に泥水を導入しつつ掘削を行う泥水式掘削装置を採用する。この泥水式掘削装置によれば、前記泥水によって切羽に泥水膜が形成されるため、切羽が安定し、よって、非常に良好に地山を掘削して横穴６を穿設できる。
【００２７】
尚、掘削装置１として、泥水式掘削装置以外の密閉型掘削装置や、開放型掘削装置を使用しても良い。
【００２８】
第一実施例においては、発進立坑10ａ及び到達立坑10ｂの側壁にして横穴６を穿設する位置に該側壁の破損を防止するリング体20を設け、該リング体20に掘削装置１側から流れてくる泥水が前記発進立坑10ａ内に侵入することを阻止するパッキン24を設け、該パッキン24及び前記リング体20に前記掘削装置１を挿通して穿設を行う。
【００２９】
続いて、ジャッキ装置16ａを収縮して該ジャッキ装置16ａと掘削装置１との間に間隙25を形成し、更に、この間隙25に二重管材２を配設する（図１ａ参照）。この二重管材２は、前記径大外管５内に設けた支承部15で前記径小内管４を支承して構成されており、径大外管５を容易に引動できる構成である。また、この径大外管５同志は端部に設けた係合部を夫々係合することで連結され、径小内管４は端部同志を溶接することで連結される。
【００３０】
この二重管材２は、例えば、ヒューム管，鋼管，ダクタイル管，セグメントを組み立てて形成する管等、組立式の管材でも非組立式の管材でもどちらを採用しても良い。
【００３１】
また、二重管材２の内部、具体的には、径小内管４と径大外管５との間には、図３に図示したように前記泥水を掘削装置１に導入する送泥管12ａ，掘削装置１での掘削により発生した泥土を発進立坑10ａを経由して排出するための排泥管12ｂ，前記排泥管12ｂを用いて前記泥土を排出するための排泥ポンプ（図示省略）を設置する。この排泥ポンプは、設置形成する管体Ａの全長に対応可能な出力のものを採用する。
【００３２】
また、径小内管４と径大外管５との間には、掘削装置１を駆動するための電源ケーブル13や制御ケーブル（図示省略）、及び、径大外管５が除去された後に生じる間隙に充填される充填剤８を流通する充填剤流通ケーブル11も設置する。
【００３３】
更に、掘削装置１の後方に配設される各二重管材２の径小内管４と径大外管５との間には、貫通連結体９が設けられており、更に、この各貫通連結体９は連設可能に構成され、更に、該貫通連結体９の基部は基端位置の径大外管５と連設可能に構成され、各貫通連結体９を連設すると共に、連設された貫通連結体９の基部を基端位置の径大外管５に連設し、連設された貫通連結体９の先端を到達立坑10ｂから引動することで二重管材２の径大外管５を到達立坑10ｂから取り出し除去する。
【００３４】
更に、基端位置に設けた径大外管５に係止し且つ径小内管４に係止しない構成の後記蓋体14と連結される貫通連結体９も設置する。この各貫通連結体９は連設可能に構成され、更に、該貫通連結体９の基部は前記蓋体14と連設可能に構成され、各貫通連結体９を連設すると共に、連設された貫通連結体９の基端を前記蓋体14に連設し、連設された貫通連結体９の先端を到達立坑10ｂから引動することで二重管材２の径大外管５を到達立坑10ｂから取り出し除去し得る構成である。この貫通連結体９同志は該貫通連結体９の端部に設けられる連結体により連結される。
【００３５】
続いて、前記収縮したジャッキ装置16ａを伸長押動せしめることにより二重管材２及び掘削装置１を推進せしめる。
【００３６】
このように、ジャッキ装置16ａの伸縮，二重管材２の配設，送泥管12ａや排泥管12ｂ，貫通連結体９，充填剤流通ケーブル11の設置・連設等を繰り返して地山７に順次二重管材２を追加配設し、到達立坑10ｂまで横穴６を穿設して到達立坑10ｂから前記掘削装置１を取り出すことで複数の二重管材２を前記横穴６に配置する（図１ｂ参照）。
【００３７】
続いて、この横穴６に配置した複数の二重管材２の径大外管５を前記到達立坑10ｂから引動することで取り出し除去する（図１ｃ参照）。
【００３８】
この径大外管５の引動は、到達立坑10ｂに設けた（発進立坑10ａに設けたものと同様の）ジャッキ装置16ｂを収縮することで行う。
【００３９】
具体的には、最も基端に位置する前記径大外管５に該径大外管５と係止して径小内管４と係止しない構成の蓋体14を付け、前記貫通連結体９の端部を該蓋体14に連設し、該貫通連結体９の先端をジャッキ装置16ｂに連結し、該ジャッキ装置16ｂで該貫通連結体９を引動すると、必然的に蓋体14が引動され、この蓋体14が取り付けられた径大外管５を含めて全ての径大外管５が引動されて前記到達立坑10ｂから取り出し除去される。
【００４０】
従って、ジャッキ装置16ｂの作動による貫通連結体９の引動により、到達立坑10ｂに到達している先端側の径大外管５から、二重管材２の径大外管５が順次取り出し除去されることになる。
【００４１】
尚、前記二重管材２同志の連結部ごとに前記蓋体14を設け、各蓋体14と貫通連結体９とを連結する構成としても良い。この場合には管体Ａを配置する区間が長くなっても容易に前記径大外管５の取り出し除去を行えることになる。
【００４２】
また、この径大外管５の取り出し除去と平行して、該径大外管５の取り出し除去により生じる径小内管４と地山７との間隙に、充填剤８を充填する。
【００４３】
具体的には、前記充填剤流通ケーブル11の端部を前記蓋体14に設けた挿通孔から該蓋体14の発進立坑10ａ側に挿通し、この充填剤流通ケーブル11の先端部にノズル17を設ける。蓋体14の外側には充填剤８の侵入を阻止するシール部材19を有し且つノズル17を設置可能なノズル設置孔を有するシールリング23が設けられ、このノズル設置孔に前記ノズル17を設置し、このノズル17から充填剤８を前記間隙に径大外管５の引動と共に充填する。
【００４４】
充填剤８としては速乾性コンクリートが採用されている。
【００４５】
尚、基端側のリング体20の外側には前記充填剤８の発進立坑10ａへの流出を阻止する阻止蓋18が設けられている。
【００４６】
従って、前記径大外管５が全て取り出し除去されると、前記径小内管４の外周には前記充填剤８が充填された状態となる。
【００４７】
このように、径小内管４と地山７との間隙に充填剤８を充填することで、該充填剤８の固化物が前記径大外管５のかわりに土圧受けとなり、前記地山７の崩落を阻止することになり、前記径大外管５を取り出し除去しても、前記径小内管４には土圧が作用せずに、極めて良好に径小内管４を前記横穴６に配置できることになる。
【００４８】
以上の工程により、前記発進立坑10ａ及び到達立坑10ｂ間に穿設した横穴６に、複数の二重管材２から径大外管５を取り除いて周囲を充填剤８の固化物（即ち、コンクリート）で囲まれた径小内管４を連設して成る管体Ａが設置されることになる（図１ｄ参照）。
【００４９】
第一実施例は上述のようにするから、径大外管５を二重管材２及び掘削装置１を良好に推進させて複数の二重管材２を良好に設置するために活用し、該複数の二重管材２設置後には径大外管５を取り出し除去することで、ガス管や水道管等の設置目的物である径小内管４を連設した管体Ａだけを横穴６に設置でき、この取り出した径大外管５は異なる管体Ａを設置するために再利用することができる。
【００５０】
この際、径小内管４と径大外管５との間に送泥管12ａや排泥管12ｂ等の設備が設けられているから、この径大外管５を取り出し除去する際に前記設備も一緒に極めて容易に取り出すことができ、二重管材２の製作にかかった費用及び手間が無駄とならず極めて効率的となる。
【００５１】
従って、径小内管４内に送泥管12ａや排泥管12ｂ等の設備が設けられていないから、例えば、この径小内管４内の補修も容易に行うことができる。
【００５２】
また、常に径小内管４は径大外管５内を推進することになり、また、この径小内管４を保護する径大外管５は推進後に取り出し除去するから、最も地山７の土圧を受ける管材の推進時には、歪みや破損を生じさせたくない径小内管４を径大外管５によって確実に保護できることになり、この径小内管４には歪みや破損が発生しない。
【００５３】
また、前記径大外管５を取り除くことで生じた空間には順次充填剤８が充填されることになり、該充填剤８の固化物により径大外管５が取り除かれても前記径小内管４が地山７の土圧を受けることが確実に阻止される。
【００５４】
更に、この径大外管５は、該径大外管５を貫通する前記貫通連結体９を引動することで一度に複数に引動して取り出し除去できるから、極めて取り出し除去が容易となる。
【００５５】
従って、第一実施例は、径大外管を利用して容易に管体を設置すると共に、管体の設置後は必要な径小内管だけを残して径大外管を取り出し除去して再利用することができる極めて実用性及び経済性に秀れた管体設置方法となる。
【００５６】
尚、第一実施例においては、前記径大外管５を到達立坑10ｂから取り出し除去するようにしているが、発進立坑10ａから取り出し除去するようにしても良い。
【００５７】
第一実施例においては、上述のように前記径小内管４と前記径大外管５とを始めから二重管材２として横穴６に配設する方法について詳述したが、先に前記径大外管５を配設してから前記径小内管４を配設する第二実施例を以下に説明する。尚、第二実施例は請求項２の実施例である。
【００５８】
第二実施例は、具体的には、所定間隔を置いた発進立坑10ａ及び到達立坑10ｂの間の地山７に掘削装置１で横穴６を穿設し、この横穴６に複数の管材を配設して該地山７に該複数の管材が連設された管体Ａを設置する方法であって、先端に前記掘削装置１を設けた径大外管５を発進立坑10ａに配設し、該径大外管５を押圧することで先端側に推進させ、順次径大外管５を連設し同様に推進させて前記発進立坑10ａ及び到達立坑10ｂの間に、連設された複数の径大外管５を設置し、続いて、この連設された複数の径大外管５内に複数の径小内管４を連設状態で配設した後、該径大外管５を前記到達立坑10ｂから引動して取り出し除去することで地山７に複数の径小内管４が連設された管体Ａを設置する方法である。
【００５９】
この場合にも第一実施例と同様に、常に径小内管４は径大外管５内を推進することになり、また、この径小内管４を保護する径大外管５は推進後に取り出し除去するから、最も地山７の土圧を受ける管材の推進時には、歪みや破損を生じさせたくない径小内管４を径大外管５によって確実に保護できることになり、この径小内管４には歪みや破損が発生しない実用性及び経済性に秀れた方法となる。
【００６０】
その余は第一実施例と同様である。
【図面の簡単な説明】
【図１】第一実施例の説明側面図である。
【図２】第一実施例の説明平面図である。
【図３】第一実施例の説明断面図である。
【符号の説明】
１掘削装置
２二重管材
４径小内管
５径大外管
６横穴
７地山
８充填剤
９貫通連結体
10ａ発進立坑
10ｂ到達立坑
12ａ送泥管
12ｂ排泥管
16ａ発進立坑側ジャッキ装置
16ｂ到達立坑側ジャッキ装置
Ａ管体[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for installing a pipe body such as a gas pipe or a water pipe.
[0002]
[Prior art and problems to be solved by the invention]
As a method of installing a pipe body such as a gas pipe or a water pipe, excavation of a start shaft and a reaching shaft is performed, and a shield device (excavation device) is installed on the start shaft, and this shield device is used to connect the start shaft to the reach shaft. A horizontal hole is drilled in the natural ground, and a pipe material is arranged at the rear part of the shield device (this pipe material can be used regardless of whether it is not assembled or needs to be assembled). ), A jack device is provided at the rear of the pipe material, the shield device and the pipe material are propelled by the extension of the jack device, the jack device is then contracted, and a new pipe material is arranged in the space formed by the contraction of the jack device. Then, the newly arranged pipe material, the pipe material already arranged in the lateral hole and the shield device are propelled by extension of the jack device, and this is repeated to make a plurality of pipes. There method of installing a is continuously provided tube (so-called jacking method) is widely employed.
[0003]
However, in this conventional propulsion method, since the earth pressure of the natural ground directly acts on the pipe body such as a gas pipe or a water pipe, there is a problem that the pipe body is likely to be distorted or damaged.
[0004]
Therefore, in order to eliminate such problems caused by earth pressure, the pipe material is installed in the gas pipe or water pipe, etc., in order to protect the gas pipe or water pipe, etc., which is the installation object. A method has been proposed in which a double pipe material composed of a large-diameter outer pipe to be fitted is installed, and the double pipe material is installed in the lateral hole.
[0005]
In the method using this double pipe material, the earth pressure acts on a large-diameter outer pipe, but the earth pressure does not act on an installation object such as a gas pipe or a water pipe, and the gas pipe or the water pipe is distorted. , No damage occurs.
[0006]
However, this method requires a lot of labor and cost for the production of double pipes because of the large diameter outer pipe, and of course, the cost must be higher than when ordinary pipes (single pipes) are used. I don't get it. In addition, the large-diameter outer pipe of the double pipe material manufactured with much effort and cost remains buried and is wasteful.
[0007]
The present invention has been made in view of the present situation as described above. When installing an installation object such as a gas pipe or a water pipe, earth pressure does not act on the installation object, and the cost is low. The tube installation method excellent in practicality and efficiency which can be constructed by is provided.
[0008]
[Means for Solving the Problems]
The gist of the present invention will be described with reference to the accompanying drawings.
[0009]
A horizontal hole 6 is drilled by the excavator 1 in the natural ground 7 between the starting shaft 10a and the reaching vertical shaft 10b at a predetermined interval, and a plurality of pipe materials are disposed in the horizontal hole 6 so that the plurality of natural materials are provided in the natural ground 7. a method of tubing is installed continuously provided by the tubular body a, the excavating device 1 mud drilling device is employed as the drilling apparatus 1 is provided at the distal end, the diameter small inner tube 4 and該径the small It consists large-diameter outer tube 5 which is fitted to the tube 4, doubly Okudoro pipe 12 a and Haidorokan 12 b between the small diameter inner tube 4 and the large-diameter outer tube 5 is disposed disposed tubing 2 the starting pit 10a, to promote the double pipe member 2 to the tip side by pressing, the starting pit 10a and arrival pit the sequential the double pipe member 2 and continuously provided by propulsion as well during 10b, after installing a plurality of said which is continuously provided double pipe member 2, both before Symbol start and the double pipe member 2 of the large-diameter outer tube 5 and Okudoro pipe 12 a and Haidorokan 12 b Shaft 10a Properly intended according to the tube installation method characterized by installing a tubular body A which a plurality of small-diameter inner tube 4 is continuously provided on the ground mountain 7 by removing extraction with引動from arrival pit 10b is there.
[0010]
Further, a horizontal hole 6 is drilled by the excavator 1 in the natural ground 7 between the start shaft 10a and the reaching vertical shaft 10b at a predetermined interval, and a plurality of pipes are disposed in the horizontal hole 6 to a method in which a plurality of tubing is installed continuously provided by the tubular body a, the drilling device mud drilling device is employed as 1, said large-diameter outer tube 5 that the excavating device 1 to-edge is provided while disposed to the calling proceeds pit 10a, and disposed Okudoro tube 12 a and Haidorokan 12 b at a position where the outer described later small-diameter inner tube 4 in the inside of the large-diameter outer tube 5, this diameter Daisotokan 5 propelled distally by pressing, and the sequential the diameter Daisotokan 5 between the continuously arranged similarly propelled allowed by the starting pit 10a and arrival pit 10b, a plurality of which are continuously provided installing the diameter Daisotokan 5, subsequently, after the disposed plurality of said diameter small inner tube 4 in a continuously provided state to the continuously provided by a plurality of the radial Daisotokan 5, the diameter size Outer tube 5 and Okudoro pipe 12 a and Haidorokan 12 b and a plurality of the radial small inner tube 4 to the ground mountain 7 by removing and removed引動from both front Symbol starting pit 10a or arrival pit 10b and is The present invention relates to a tube installation method, characterized in that a continuously installed tube A is installed.
[0011]
Further, in the tube installation method according to any one of claims 1, in which according to the tube installation method being characterized in that disposed a jack device 16a for promoting the onset advance shafts 10a .
[0012]
Further, in the tube installation method according to any one of claims 1, 2, which relates to tubular body installation wherein the removal takes out the diameter Daisotokan 5 from arrival pit 10b.
[0013]
Further, in the tube installation method according to claim 4, outside a position of the large-diameter outer tube 5 in the interior the small-diameter inner tube 4 is penetrations coupling body 9 is provided, further, the each through coupling body 9 is configured to be continuously provided, further, the base of the penetrations coupling body 9 is configured to be provided continuously with the radial Daisotokan 5 of proximal position, continuously provided the through coupling body 9 while the base of the penetrations coupling body 9 which is continuously provided to continuously to the diameter Daisotokan 5 of proximal position, the distal end of the penetrations coupling body 9 which is continuously provided from the arrival we shafts 10b those of the tube installation wherein the removal takes out the diameter Daisotokan 5 from the arrival we shafts 10b by引動.
[0014]
Further, in the tube installation method according to claim 5, said di Yakki device 16b is arranged in the arrival our vertical shaft 10b, characterized by引動the diameter Daisotokan 5 Ri by this jack device 16b This relates to the tube installation method.
[0015]
Further, in the tube installation method according to any one of claims 1 to 6, and the diameter small inner tube 4 to emerge Ri by the removal takes out the diameter Daisotokan 5 and the ground mountain 7 The present invention relates to a tube installation method characterized by filling a gap 8 with a filler 8.
[0016]
Further, in the tube installation method according to any one of claims 1 to 7, provided a ring member 20 to prevent damage to the side wall at a position bored the lateral hole 6 in the side wall of the starting pit 10 a after providing a packing 24 that muddy water flowing from the drilling device 1 side in the ring member 20 is prevented from entering into the starting pit 10 in a, the drilling device 1 to the ring member 20 and the packing 24 The tubular body installation method is characterized in that the horizontal hole 6 is drilled through .
[0017]
[Action and effect of the invention]
When installing a small-diameter inner pipe 4 such as a gas pipe or a water pipe, which is the installation object, there is a large-diameter outer pipe 5 on the outside of the small-diameter inner pipe 4. The earth pressure from the natural ground 7 is received, so that the small diameter inner pipe 4 is not distorted or broken.
[0018]
Further, after the small-diameter inner tube 4 is installed, the large-diameter outer tube 5 is taken out and removed while leaving the necessary small-diameter inner tube 4, and the large-diameter outer tube 5 is reused to install a different tube A. To do.
[0019]
That is, at the time of propelling the pipe material that receives the earth pressure of the natural ground 7, the small diameter inner pipe 4 that does not want to cause distortion or breakage is protected by the large diameter outer pipe 5. No breakage occurs, and the large-diameter outer tube 5 that protects the small-diameter inner tube 4 is taken out, removed, and reused after propulsion. Installation of A can be performed efficiently at low cost.
[0020]
Accordingly, the present invention can not only easily and surely install the pipe body using the outer pipe, but also can be constructed at a low cost by reusing the outer pipe, and is extremely excellent in practicality and efficiency. A body setting method can be provided.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
The drawings illustrate a first embodiment of the present invention and are described below. The first embodiment is an embodiment of the first aspect.
[0022]
In the first embodiment, a horizontal hole 6 is drilled by a drilling device 1 in a natural ground 7 between a starting vertical shaft 10a and a reaching vertical shaft 10b at a predetermined interval, and a plurality of pipe materials are arranged in the horizontal hole 6 to form the ground. This is a method of installing a pipe body A in which a plurality of pipe materials are connected to a mountain 7, comprising a small-diameter inner tube 4 as a pipe material and a large-diameter outer tube 5 fitted on the small-diameter inner tube 4. The double pipe 2 is adopted, the double pipe 2 provided with the excavating device 1 at the tip is disposed in the start shaft 10a, and the double pipe 2 is pressed to be propelled to the tip side. 2 are connected and propelled in the same manner, and a plurality of continuous double pipes 2 are installed between the starting vertical shaft 10a and the reaching vertical shaft 10b. This is a method of installing the pipe body A in which a plurality of small-diameter inner pipes 4 are continuously connected to the natural ground 7 by being pulled out and removed from the reaching shaft 10b.
[0023]
Specifically, first, a starting shaft 10a and a reaching shaft 10b having a predetermined depth are drilled at both front and rear ends of a section in which the tube A is disposed. An existing shaft may be used.
[0024]
Subsequently, the jack device 16a (propulsion jack) is installed in the start shaft 10a. The jack device 16a is composed of a piston 21 and a cylinder 22.
[0025]
Subsequently, the excavator 1 is disposed in the start shaft 10a, and the excavator 1 is introduced into the ground 7 from the side wall of the start shaft 10a by excavation by the excavator 1 and extension of the jack device 16a. Drilling of the horizontal hole 6 is started.
[0026]
The excavator 1 employs a mud drilling device that excavates while introducing mud into the face. According to this muddy water type excavator, a muddy water film is formed on the face by the muddy water, so that the face becomes stable, and therefore, the horizontal hole 6 can be drilled by excavating the natural ground very well.
[0027]
As the excavator 1, a closed excavator other than the muddy water excavator or an open excavator may be used.
[0028]
In the first embodiment, a ring body 20 is provided at the position where the side hole 6 is drilled as the side wall of the starting shaft 10a and the reaching shaft 10b, and the ring body 20 flows from the excavator 1 side. A packing 24 is provided to prevent incoming mud from entering the start shaft 10a, and the excavator 1 is inserted into the packing 24 and the ring body 20 for drilling.
[0029]
Subsequently, the jack device 16a is contracted to form a gap 25 between the jack device 16a and the excavator 1, and the double pipe 2 is disposed in the gap 25 (see FIG. 1a). The double pipe member 2 is configured by supporting the small-diameter inner tube 4 by a support portion 15 provided in the large-diameter outer tube 5, and the large-diameter outer tube 5 can be easily pulled. The large diameter outer pipes 5 are connected by engaging engaging portions provided at the ends, and the small diameter inner pipes 4 are connected by welding the end parts.
[0030]
As the double pipe 2, for example, a fume pipe, a steel pipe, a ductile pipe, a pipe formed by assembling a segment, or the like may be used.
[0031]
Also, a mud pipe for introducing the mud water into the excavator 1 as shown in FIG. 3 between the inside of the double pipe 2, specifically, between the small diameter inner pipe 4 and the large diameter outer pipe 5. 12a, a mud pipe 12b for discharging mud generated by excavation by the excavator 1 through the start shaft 10a, and a mud pump for discharging the mud using the mud pipe 12b (not shown) ). This drainage pump employs an output capable of supporting the entire length of the tubular body A to be installed and formed.
[0032]
Further, between the small-diameter inner tube 4 and the large-diameter outer tube 5 after the power cable 13 and the control cable (not shown) for driving the excavator 1 and the large-diameter outer tube 5 are removed. A filler distribution cable 11 for distributing the filler 8 filled in the generated gap is also installed.
[0033]
Further, a through-connecting body 9 is provided between the small-diameter inner pipe 4 and the large-diameter outer pipe 5 of each double pipe member 2 disposed behind the excavator 1. The connecting body 9 is configured to be connected to each other, and the base portion of the through-connecting body 9 is configured to be connected to the large-diameter outer tube 5 at the base end position. The double pipe member 2 has a large diameter by connecting the base of the through-connecting body 9 provided to the large-diameter outer pipe 5 at the base end position and moving the tip of the through-connecting body 9 provided continuously from the reaching shaft 10b. The outer pipe 5 is taken out from the reaching shaft 10b and removed.
[0034]
Further, a through-connecting body 9 is provided which is connected to the lid body 14 described later so as to be locked to the large-diameter outer tube 5 provided at the base end position and not locked to the small-diameter inner tube 4. Each through-connecting body 9 is configured to be connected to each other, and a base portion of the through-connecting body 9 is configured to be connected to the lid body 14. The base end of the through-connecting body 9 is connected to the lid body 14, and the distal end of the continuous through-connecting body 9 is moved from the reaching shaft 10b so that the large-diameter outer tube 5 of the double pipe material 2 is reached. It is the structure which can be taken out and removed from 10b. The through connectors 9 are connected by a connector provided at the end of the through connector 9.
[0035]
Subsequently, the double pipe member 2 and the excavator 1 are propelled by extending and pushing the contracted jack device 16a.
[0036]
In this way, by repeating the expansion and contraction of the jack device 16a, the arrangement of the double pipe material 2, the installation / continuous installation of the mud pipe 12a and the mud pipe 12b, the through connector 9, the filler distribution cable 11, etc., the ground 7 The double pipe material 2 is additionally arranged in sequence, the horizontal hole 6 is drilled up to the reaching shaft 10b, and the excavation device 1 is taken out from the reaching shaft 10b, thereby arranging a plurality of double pipe materials 2 in the horizontal hole 6 (FIG. 1b).
[0037]
Subsequently, the large-diameter outer pipes 5 of the plurality of double pipe members 2 arranged in the horizontal holes 6 are taken out and removed from the reaching shaft 10b (see FIG. 1c).
[0038]
The large diameter outer pipe 5 is pulled by contracting a jack device 16b provided in the reaching shaft 10b (similar to that provided in the starting shaft 10a).
[0039]
Specifically, the large outer pipe 5 located at the most proximal end is provided with a lid 14 configured to be engaged with the large outer pipe 5 and not to be engaged with the small inner pipe 4, and the through-connecting body. When the end of 9 is connected to the lid body 14, the tip of the through-connecting body 9 is connected to the jack device 16b, and the through-connecting body 9 is pulled by the jack device 16b, the lid body 14 is inevitably formed. The large diameter outer pipe 5 including the large diameter outer pipe 5 to which the lid body 14 is attached is pulled and removed from the reaching shaft 10b and removed.
[0040]
Therefore, the large diameter outer tube 5 of the double pipe material 2 is sequentially taken out and removed from the large diameter outer tube 5 on the tip side reaching the reaching shaft 10b by the pulling of the through-connecting body 9 by the operation of the jack device 16b. It will be.
[0041]
In addition, it is good also as a structure which provides the said cover body 14 for every connection part of the said double pipe materials 2, and connects each cover body 14 and the penetration connection body 9. FIG. In this case, the large diameter outer tube 5 can be easily removed and removed even if the section in which the tube body A is arranged becomes long.
[0042]
In parallel with the removal and removal of the large-diameter outer tube 5, a filler 8 is filled in the gap between the small-diameter inner tube 4 and the natural ground 7 generated by the removal and removal of the large-diameter outer tube 5.
[0043]
Specifically, the end portion of the filler distribution cable 11 is inserted from the insertion hole provided in the lid body 14 to the start shaft 10a side of the lid body 14, and a nozzle 17 is inserted into the distal end portion of the filler distribution cable 11. Is provided. A seal ring 23 having a seal member 19 for preventing the filler 8 from entering and having a nozzle installation hole in which the nozzle 17 can be installed is provided outside the lid body 14, and the nozzle 17 is installed in the nozzle installation hole. Then, the filler 8 is filled into the gap together with the pulling of the large diameter outer tube 5 from the nozzle 17.
[0044]
As the filler 8, fast-drying concrete is employed.
[0045]
A blocking lid 18 is provided outside the base end ring body 20 to prevent the filler 8 from flowing out to the starting shaft 10a.
[0046]
Accordingly, when all the large diameter outer pipe 5 is taken out and removed, the outer circumference of the small diameter inner pipe 4 is filled with the filler 8.
[0047]
In this way, by filling the gap between the small-diameter inner pipe 4 and the natural ground 7 with the filler 8, the solidified product of the filler 8 becomes a soil pressure receiver instead of the large-diameter outer pipe 5, and the ground Even if the large diameter outer pipe 5 is taken out and removed, earth pressure does not act on the small diameter inner pipe 4 and the small diameter inner pipe 4 is very well formed. It can be arranged in the horizontal hole 6.
[0048]
By the above process, the large outer pipe 5 is removed from the plurality of double pipes 2 in the horizontal hole 6 formed between the starting shaft 10a and the reaching shaft 10b, and the periphery is solidified with the filler 8 (that is, concrete). A tubular body A formed by continuously connecting the small-diameter inner pipes 4 surrounded by (3) is installed (see FIG. 1d).
[0049]
Since the first embodiment is as described above, the large-diameter outer pipe 5 is utilized to promote the double pipe 2 and the excavating apparatus 1 and to install the plurality of double pipes 2 well. After installing the double pipe material 2, the large diameter outer pipe 5 is taken out and removed, so that only the pipe body A in which the small diameter inner pipe 4 which is the installation object such as a gas pipe or a water pipe is connected is installed in the horizontal hole 6. The extracted large diameter outer tube 5 can be reused to install a different tube A.
[0050]
At this time, facilities such as a mud pipe 12a and a mud pipe 12b are provided between the small-diameter inner pipe 4 and the large-diameter outer pipe 5, so that when the large-diameter outer pipe 5 is taken out and removed, The equipment can be taken out very easily together, and the cost and labor required for the production of the double pipe 2 are not wasted and are extremely efficient.
[0051]
Therefore, since the facilities such as the mud pipe 12a and the exhaust mud pipe 12b are not provided in the small diameter inner pipe 4, for example, the repair in the small diameter inner pipe 4 can be easily performed.
[0052]
In addition, the small-diameter inner tube 4 always propels the inside of the large-diameter outer tube 5, and the large-diameter outer tube 5 that protects the small-diameter inner tube 4 is taken out and removed after propulsion. When propelling the pipe material subjected to the earth pressure, the small-diameter inner pipe 4 that does not want to cause distortion or breakage can be reliably protected by the large-diameter outer pipe 5, and the small-diameter inner pipe 4 is distorted or broken. do not do.
[0053]
Further, the space formed by removing the large diameter outer tube 5 is sequentially filled with the filler 8, and even if the large diameter outer tube 5 is removed by the solidified material of the filler 8, the small diameter is reduced. The inner pipe 4 is reliably prevented from receiving the earth pressure of the natural ground 7.
[0054]
Furthermore, the large diameter outer pipe 5 can be taken out and removed by pulling the plurality of through connecting bodies 9 penetrating the large diameter outer pipe 5 at a time, so that the removal and removal are extremely easy.
[0055]
Therefore, in the first embodiment, the large-diameter outer tube is used to easily install the pipe body, and after the pipe body is installed, the large-diameter outer pipe is removed by removing only the necessary small-diameter inner pipe. The pipe installation method can be reused and has excellent practicality and economy.
[0056]
In the first embodiment, the large diameter outer pipe 5 is removed from the reaching shaft 10b and removed, but may be removed from the starting shaft 10a and removed.
[0057]
In the first embodiment, as described above, the method of arranging the small-diameter inner pipe 4 and the large-diameter outer pipe 5 from the beginning as the double pipe material 2 in the horizontal hole 6 has been described in detail. A second embodiment in which the small inner tube 4 is disposed after the large outer tube 5 is disposed will be described below. The second embodiment is an embodiment of the second aspect.
[0058]
Specifically, in the second embodiment, a horizontal hole 6 is drilled by the excavator 1 in a natural ground 7 between the start shaft 10a and the arrival shaft 10b at a predetermined interval, and a plurality of pipes are arranged in the horizontal hole 6. In this method, the pipe body A in which the plurality of pipe materials are connected to the natural ground 7 is installed, and a large-diameter outer pipe 5 having the excavator 1 provided at the tip is disposed in the start shaft 10a. The large-diameter outer pipe 5 is pushed toward the front end side, and the large-diameter outer pipes 5 are sequentially arranged and similarly promoted so as to be connected between the starting vertical shaft 10a and the reaching vertical shaft 10b. The large diameter outer pipe 5 is installed, and then, after the plurality of small diameter inner pipes 4 are continuously arranged in the plurality of large diameter outer pipes 5, the large diameter outer pipe 5 is arranged. This is a method of installing the pipe body A in which a plurality of small-diameter inner pipes 4 are continuously connected to the natural ground 7 by pulling out and removing them from the reaching shaft 10b.
[0059]
In this case as well, as in the first embodiment, the small-diameter inner tube 4 always propels the inside of the large-diameter outer tube 5, and the large-diameter outer tube 5 that protects the small-diameter inner tube 4 is propelled. Since the pipe material that is subjected to the earth pressure of the natural ground 7 is pushed out and removed later, the small-diameter inner pipe 4 that does not want to cause distortion or breakage can be reliably protected by the large-diameter outer pipe 5. The inner pipe 4 is a method that is excellent in practicality and economical efficiency without causing distortion or breakage.
[0060]
The rest is the same as in the first embodiment.
[Brief description of the drawings]
FIG. 1 is an explanatory side view of a first embodiment.
FIG. 2 is an explanatory plan view of the first embodiment.
FIG. 3 is an explanatory sectional view of the first embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Drilling device 2 Double pipe material 4 Diameter small inner pipe 5 Diameter large outer pipe 6 Side hole 7 Ground mountain 8 Filler 9 Through-connecting body
10a Starting shaft
10b Reaching shaft
12a Mud pipe
12b Mud pipe
16a Starting shaft side jack device
16b Reaching shaft side jack device A Tube

Claims

A horizontal hole is drilled by a drilling device in a natural ground between a start shaft and a reaching shaft at a predetermined interval, and a plurality of pipe materials are arranged in the horizontal hole, and the plurality of pipe materials are continuously connected to the natural ground. a method of installing a body, mud drilling device is employed as the drilling apparatus, the drilling apparatus is provided at the distal end, the large-diameter outer tube which is fitted in a radial small inner tube and該径small inner tube A double pipe with a mud pipe and a mud pipe arranged between the small diameter inner pipe and the large diameter outer pipe is disposed in the start shaft, and the double pipe is pressed to the tip propelled to the side, between the starting pit and arrival pit likewise propelled consecutively provided a sequential the double pipe member, after the setting of the plurality of the double pipe member which is continuously provided, the double pipe member large-diameter outer tube and Okudoro pipe and the waste sludge tube and a plurality of small diameter inner tube to the ground mountains by removing be taken out by引動from both front Symbol starting pit or arrival pit Tube installation method characterized by installing a continuously provided by the tube.

A horizontal hole is drilled by a drilling device in a natural ground between a start shaft and a reaching shaft at a predetermined interval, and a plurality of pipe materials are arranged in the horizontal hole, and the plurality of pipe materials are continuously connected to the natural ground. a method of installing a body, the mud drilling apparatus employing a drilling rig, as well as disposed on the calling proceeding vertical shaft a large diameter outer tube the drilling device is provided above end, the large diameter outer and disposed Okudoro tube and the waste sludge pipe in a position to be the outside of the later small diameter tube in the inner tube, propelled distally by pressing the diameter larger outer tube, sequential said diameter large outer tubes between the starting pit and arrival pit and continuously provided to propel similarly established a plurality of said diameter larger outer tube which is continuously provided, followed by a plurality of the diameters large outer tube which is this continuously provided a plurality of said diameter small inner tube after arranged at consecutively provided state, Okudoro tube and the diameter Daisotokan and a waste sludge pipe from both front Symbol starting pit or arrival pit in Tube installation method in which a plurality of the radial small inner tube into the ground mountains by moving to take out removal and wherein placing the continuously provided by the tube.

In tube installation method according to any one of claims 1, 2, pipe installation method being characterized in that disposed a jack device for propulsion in the calling proceeds pit.

In tube installation method according to any one of claims 1, 2, pipe installation wherein the removal takes out the size larger outer tube from arrival pit.

In tube installation method according to claim 4, the position where the outer side of the small-diameter inner tube and the inside of the large-diameter outer tube and penetrations connecting body is provided, further, the respective through-connection body continuously arranged capable constructed, further, the base of the penetrations coupling body is configured to be provided continuously with the diameter larger outer tube proximal position, with the through connection body is continuously provided, continuously provided by said transmural the base of the passage connecting member provided continuously in the radial large outer tube proximal position, the arrival us the diameter Daisotokan the tip of the penetrations coupling body that is continuously provided by引動from the arrival we shafts A tube installation method characterized by removing from a shaft and removing it.

In tube installation method according to claim 5, wherein the arrival we shafts to disposed the di Yakki device, pipe installation method characterized by引動the diameter larger outer tube Ri by this jack device.

In tube installation method according to any one of claims 1 to 6, a filler the diameter small inner tube to emerge Ri by the removal takes out the size larger outer tube and the gap between the ground Mountain A tube installation method characterized by filling.

The pipe body installation method according to any one of claims 1 to 7, wherein a ring body for preventing damage to the side wall is provided at a position where the side hole is drilled as a side wall of the start shaft, and the ring body is excavated. After providing a packing for preventing muddy water flowing from the apparatus side from entering the start shaft, the excavator is inserted into the ring body and the packing to drill the lateral hole. Tube installation method.