JPH0881969A - Forming method of manhole - Google Patents

Forming method of manhole

Info

Publication number
JPH0881969A
JPH0881969A JP6215629A JP21562994A JPH0881969A JP H0881969 A JPH0881969 A JP H0881969A JP 6215629 A JP6215629 A JP 6215629A JP 21562994 A JP21562994 A JP 21562994A JP H0881969 A JPH0881969 A JP H0881969A
Authority
JP
Japan
Prior art keywords
protection
manhole
sand
cylinder
forming
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.)
Withdrawn
Application number
JP6215629A
Other languages
Japanese (ja)
Inventor
Tamio Yamagishi
民夫 山岸
Original Assignee
Tamu Tec:Kk
有限会社タム・テック
Nikko Kensetsu Kk
日工建設株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tamu Tec:Kk, 有限会社タム・テック, Nikko Kensetsu Kk, 日工建設株式会社 filed Critical Tamu Tec:Kk
Priority to JP6215629A priority Critical patent/JPH0881969A/en
Publication of JPH0881969A publication Critical patent/JPH0881969A/en
Withdrawn legal-status Critical Current

Links

Abstract

PURPOSE: To improve workability by a method wherein a cylindrical body consisting of two split members is sunk into the ground to form a pit, a section between the pit and the pit is partitioned by a sheathing means, and soil and sand in a partitioned space are removed. CONSTITUTION: A wall-surface protective cylindrical body 1, in which two split members 1a, b are fitted by bonding sections 1A, 1B, is sunk vertically to the ground while soil and sand in the cylindrical body 1 are removed, thus forming a first pit. A second pit is formed by a wall-surface protective cylindrical body 2 at a space from the first pit. Sheet piles 3, 4 are driven at places in the ground corresponding to planes containing the bonding sections 1A, 2A, 1B, 2B of the cylindrical bodies 1, 2 respectively. Bearing beams 5, 6 are mounted between the bonding sections 1A, 1B and between the bonding sections 2A, 2B respectively. Split members 1b, 2b are extracted, and soil and sand between the piles 3, 4 are removed.

Description

【発明の詳細な説明】Detailed Description of the Invention
【0001】[0001]
【産業上の利用分野】本発明は地盤面から地下に向かっ
てマンホールを形成する方法に関し、例えば地下の構造
物に達するマンホールや、各種トンネルの中継接続点と
して利用されるマンホールを形成する方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of forming a manhole from a ground surface to an underground, for example, a method of forming a manhole reaching an underground structure or a manhole used as a relay connection point of various tunnels. .
【0002】[0002]
【従来の技術】従来地下埋設管等の中継接続のための作
業場などとして使用される大型のマンホールを形成する
場合には、地表から土砂を掘削除去してマンホールを造
成するに充分な広さの空間を形成し、この空間内に縦管
状構造物を造成したのち土砂等で地盤との間隙を埋め戻
す方法がしばしば用いられている。しかしながらこのよ
うな方法で大量の土砂を取り除くことは、費用が嵩むば
かりでなく工期も長くなり、環境に対する影響も大き
い。そこで構造物を造成するのに最低必要な空間を囲む
ように、予め地上から地盤内にシートパイルなどを打ち
込んで土止め壁を構築しておき、その後に土止め壁で囲
まれた地盤を掘り下げる手段を利用するのが一般的であ
る。
2. Description of the Related Art In the case of forming a large manhole which is conventionally used as a work place for relay connection of underground buried pipes, etc., it has a sufficient area for excavating and removing earth and sand from the surface of the earth. A method is often used in which a space is formed, a vertical tubular structure is formed in the space, and then the space between the ground and the ground is filled with earth and sand. However, removing a large amount of earth and sand by such a method is not only costly, but also prolongs the construction period and has a large impact on the environment. Therefore, so as to enclose the minimum required space for constructing a structure, a sheet pile or the like is driven in advance from the ground to build a soil retaining wall, and then the soil surrounded by the soil retaining wall is dug down. It is common to use means.
【0003】しかしながら地盤内にシートパイルを打ち
込む場合、シートパイルの長さが長くなると地盤に垂直
に打ち込むことは容易でないほか、地盤を掘り下げるに
当たってシートパイルの位置がずれないように必要に応
じて杭を打ち込み、或いは支持梁を設けるなどの複雑な
作業を組み合わせる方法が採られており、工数が多くて
工期も長くかかるという問題があった。
However, when the sheet pile is driven into the ground, it is not easy to drive the sheet pile vertically into the ground when the length of the sheet pile becomes long, and the piles are piled as necessary so as not to shift the position of the sheet pile when the ground is dug down. There is a problem that a complicated work such as driving in or providing a support beam is combined, which requires a lot of man-hours and takes a long time.
【0004】また例えば鋼製或いはコンクリート製の筒
状体を地盤に対して圧入し、その筒状体の内部に露出し
た土砂を掘削除去して縦孔を形成すると共に、更に筒状
体を圧入して掘削孔の壁面の崩壊を防ぐことによりマン
ホールを形成する方法がある。しかしこの方法は比較的
に小規模の縦孔を形成するには適しているものの、例え
ばトンネルの中継接続の作業場などとして使用できる大
型のマンホールを造成するには適していなかった。
Further, for example, a tubular body made of steel or concrete is press-fitted into the ground, the earth and sand exposed inside the tubular body are excavated and removed to form a vertical hole, and the tubular body is further press-fitted. Then, there is a method of forming a manhole by preventing the wall surface of the drill hole from collapsing. However, although this method is suitable for forming a relatively small vertical hole, it is not suitable for forming a large manhole that can be used as a work place for relay connection of tunnels, for example.
【0005】[0005]
【発明が解決しようとする課題】そこで本発明は、比較
的に広くて作業場やトンネル等の中継基地等として利用
しやすい形状の空間を有する大型のマンホールを簡単か
つ容易に造成することができる、改良されたマンホール
の形成法を提供することを目的とした。
Therefore, the present invention can easily and easily construct a large manhole having a space which is relatively large and has a shape which can be easily used as a relay station such as a workshop or a tunnel. The object is to provide an improved manhole formation method.
【0006】[0006]
【課題を解決するための手段】上記の目的を達成するた
め、本発明のマンホールの形成法は、軸に平行な2個の
結合部で嵌合した略対称な2個の分割部材からなる壁面
保護筒体の対を該結合部を含む面が直方体の対向面位置
を占めるように地盤に対し垂直に沈下させると共に該各
壁面保護筒体内の土砂を除去して2個の縦孔を形成し、
一方の壁面保護筒体の結合部から他方の壁面保護筒体の
結合部に至る該直方体の側面位置に土留め手段を設け、
該土留め手段と該壁面保護筒体とに包囲された範囲内に
位置する該壁面保護筒体の分割部材を撤去すると共に該
範囲内の土砂を除去するものである。
In order to achieve the above object, the method of forming a manhole of the present invention is a wall surface composed of two substantially symmetrical dividing members fitted with two connecting portions parallel to an axis. The pair of protection cylinders is sunk vertically to the ground so that the surface including the joint occupies the opposing surface position of the rectangular parallelepiped, and the earth and sand in each wall protection cylinder is removed to form two vertical holes. ,
Soil retaining means is provided at a side surface position of the rectangular parallelepiped extending from the connecting portion of the one wall surface protecting cylinder to the connecting portion of the other wall surface protecting cylinder,
The dividing member of the wall surface protection cylinder located in a range surrounded by the earth retaining means and the wall protection cylinder is removed, and the earth and sand in the range is removed.
【0007】本発明のマンホールの形成法を実施するに
当たって使用される壁面保護筒体は、図2に示すように
軸に平行な2個の結合部1Aと結合部1Bで嵌合した略
対称な2個の分割部材1a、1bからなるもので、例え
ば鉄筋等で補強されたコンクリートなどで形成されたも
のであり、その下端には鋼製の刃部1cが設けられてい
るものが好ましく用いられる。この場合、壁面保護筒体
1を構成する2個の分割部材1a、1bは両側端部が互
いに噛み合って結合部1Aと結合部1Bを構成し、一体
に結合したときは筒体1として取り扱うことができる
が、必要に応じてその一方を軸と平行にずらすことによ
って噛み合わせを外して結合を解除し、分解することが
できるものである。
As shown in FIG. 2, the wall surface protecting cylinder used in carrying out the method of forming a manhole of the present invention has a substantially symmetrical shape in which two joint portions 1A and 1B parallel to the axis are fitted together. It is composed of two divided members 1a and 1b, and is formed of concrete or the like reinforced with, for example, a reinforcing bar or the like, and a steel blade portion 1c provided at the lower end thereof is preferably used. . In this case, the two partition members 1a and 1b that form the wall surface protection cylinder 1 have their both side ends meshed with each other to form the joint portion 1A and the joint portion 1B. When they are integrally joined, they should be treated as the cylinder body 1. However, if necessary, one of them can be displaced in parallel with the axis to disengage the engagement, release the connection, and disassemble.
【0008】本発明のマンホールの形成法を図1に従っ
て説明する。本発明の方法を実施するに当たっては、先
ず上記のような壁面保護筒体1を地盤面上に垂直に設置
し、次いで壁面保護筒体1の内部に露出した地盤を掘削
して土砂を除去し、掘削が進むにつれて壁面保護筒体1
を地盤内に沈下させる方法により、断面が円形の第1の
縦孔を形成する。その際に壁面保護筒体1の長さが予定
したマンホールの深さに比べて短いときは、更に壁面保
護筒体1の上部に追加の壁面保護筒体を接続して同様に
掘削を継続し、所望の深さの縦孔を形成することができ
る。また土砂の掘削除去方法は特に限定されず、オーガ
ー等の掘削装置を用いる方法や高圧水ジェットで掘り崩
した土砂を泥水と共に吸い上げる方法など、従来から公
知の掘削方法を利用することもできる。
The manhole forming method of the present invention will be described with reference to FIG. In carrying out the method of the present invention, first, the wall protection cylinder 1 as described above is installed vertically on the ground surface, and then the ground exposed inside the wall protection cylinder 1 is excavated to remove the earth and sand. , As the excavation progresses, wall protection cylinder 1
The first vertical hole having a circular cross section is formed by the method of submersing the sand in the ground. At that time, when the length of the wall protection cylinder 1 is shorter than the planned depth of the manhole, an additional wall protection cylinder is connected to the upper part of the wall protection cylinder 1 to continue excavation in the same manner. A vertical hole having a desired depth can be formed. The method of excavating and removing earth and sand is not particularly limited, and conventionally known excavation methods such as a method of using an excavator such as an auger and a method of sucking earth and sand excavated by a high-pressure water jet together with mud can be used.
【0009】またこうして形成された第1の縦孔から所
定の間隔をおいて第2の縦孔を形成するが、その際には
前記の壁面保護筒体1と対となる同形状の壁面保護筒体
2を使用して、上記と同様の手順に従って作業を進める
のがよい(図1のI)。但し、これらの第1と第2の縦
孔は、逐次に掘削してもよく或いは同時に並行して掘削
しても構わない。またこうして第1の縦孔に設置された
壁面保護筒体1と第2の縦孔に設置された壁面保護筒体
2とは、それぞれの結合部が平行四辺形、特に長方形の
頂点位置を占めていることが必要である。
A second vertical hole is formed at a predetermined interval from the first vertical hole thus formed. At this time, the wall surface protection member having the same shape as the pair of wall surface protection cylinders 1 is protected. It is preferable to use the tube body 2 and proceed with the work according to the same procedure as above (I in FIG. 1). However, these first and second vertical holes may be excavated sequentially or in parallel at the same time. Further, in this way, the wall protection cylinder 1 installed in the first vertical hole and the wall protection cylinder 2 installed in the second vertical hole have their respective joints occupying the vertex positions of the parallelogram, particularly the rectangle. It is necessary to have
【0010】次に第1の壁面保護筒体1の結合部1Aと
第2の壁面保護筒体2の結合部2Aとを含む平面に相当
する地盤内位置にシートパイル3を打ち込むと共に、第
1の壁面保護筒体1の結合部1Bと第2の壁面保護筒体
2の結合部2Bとを含む平面に相当する地盤内位置にも
シートパイル4を打ち込む。そして又、第1の壁面保護
筒体1における結合部1Aと結合部1Bとの間に支持梁
5を設けると共に、第2の壁面保護筒体2における結合
部2Aと結合部2Bとの間にも支持梁6を設ける(図1
のII)。但し、これらのシートパイル3と4、並びに支
持梁5と6は、そのいずれを先に設けてもよく或いは同
時に並行して設けても構わない。またシートパイル3と
4に加えてその他の仮設土留め手段を併用してもよい。
Next, the sheet pile 3 is driven into a position in the ground corresponding to a plane including the connecting portion 1A of the first wall surface protecting cylinder 1 and the connecting portion 2A of the second wall surface protecting cylinder 2, and the first pile The sheet pile 4 is also driven into a position in the ground corresponding to a plane including the joint portion 1B of the wall surface protection cylinder 1 and the joint portion 2B of the second wall protection cylinder 2. In addition, the support beam 5 is provided between the connecting portion 1A and the connecting portion 1B of the first wall surface protection cylinder 1, and the supporting beam 5 is provided between the connecting portion 2A and the connection portion 2B of the second wall surface protection cylinder 2. Is also provided with a support beam 6 (Fig. 1
II). However, the sheet piles 3 and 4 and the support beams 5 and 6 may be provided first or at the same time in parallel. In addition to the sheet piles 3 and 4, other temporary earth retaining means may be used together.
【0011】続いて第1の壁面保護筒体1から分割部材
1bを引き抜いて回収すると共に分割部材1aを残し、
また第2の壁面保護筒体2から分割部材2bを引き抜い
て回収すると共に分割部材2aを残す。そしてシートパ
イル3とシートパイル4との間に挟まれた直方体の内部
に残された土砂を掘削して除去する(図1のIII )が、
その際の土砂の掘削除去方法は前記の縦孔の場合におけ
る掘削と同様に、従来から公知の掘削方法などを適宜利
用することができる。
Subsequently, the dividing member 1b is pulled out from the first wall protection cylinder 1 and collected, and the dividing member 1a is left,
Further, the dividing member 2b is pulled out from the second wall protection cylinder 2 and collected, and the dividing member 2a is left. Then, the earth and sand left inside the rectangular parallelepiped sandwiched between the sheet pile 3 and the sheet pile 4 are excavated and removed (III in FIG. 1).
In this case, as a method for excavating and removing earth and sand, a conventionally known excavation method or the like can be appropriately used as in the case of excavation in the case of the vertical hole.
【0012】更にこのような土砂の掘削除去を実施して
いる間に、必要に応じてシートパイル3、4を壁面保護
壁体7、8等によって支えるようにしてもよく、または
これらの壁面保護壁体に代えて支持梁等を用いてシート
パイル3、4を支えるようにしてもよい。この際、壁面
保護壁体7、及び壁面保護壁体8の両側端部は、それぞ
れ結合部1Aと結合部2A、及び結合部1Bと結合部2
Bに対して係合したまま摺動できるように形成されてい
て、土砂の掘削除去が進行するにつれて沈下させること
もできる(図1のIV)。この場合も、壁面保護壁体7、
8の縦方向の長さが予定したマンホールの深さに比べて
短いときは、更に追加の壁面保護壁体を継ぎ足して同様
に掘削を継続し、所望の深さまで壁面保護壁体を設ける
ことができる。また更に必要があれば、壁面保護壁体7
と壁面保護壁体8との間に支持梁9等を設けることもで
きる。
Further, the sheet piles 3 and 4 may be supported by the wall protection wall bodies 7 and 8 or the like as required during the excavation and removal of the earth and sand, or the wall protection of these walls. Instead of the wall body, a support beam or the like may be used to support the sheet piles 3 and 4. At this time, both side end portions of the wall surface protection wall body 7 and the wall surface protection wall body 8 are connected to the connection portion 1A and the connection portion 2A, and the connection portion 1B and the connection portion 2 respectively.
It is formed so as to be able to slide while being engaged with B, and it can be subsided as the excavation and removal of earth and sand proceeds (IV in FIG. 1). Also in this case, the wall protection wall 7,
When the length in the vertical direction of 8 is shorter than the planned depth of the manhole, it is possible to add an additional wall protection wall body and continue excavation in the same manner to provide the wall protection wall body to a desired depth. it can. In addition, if necessary, the wall protection wall 7
A support beam 9 or the like may be provided between the wall surface protection wall body 8 and the wall surface protection wall body 8.
【0013】このようにして所望の断面積と所望の深さ
とを有し、かつ壁面が保護された地下空間が形成された
後に、シートパイル3、4や仮設土留め手段などを撤去
し、底面を整地してコンクリート打設を行って、図3に
示す組立体のような形状のマンホールが完成するが、マ
ンホール内における設備等の取り付けのためなどに有用
であれば、マンホール完成後も支持梁等を残しておくこ
とは何ら差し支えない。
In this way, after the underground space having the desired cross-sectional area and the desired depth and the wall surface is protected, the sheet piles 3 and 4 and the temporary earth retaining means are removed, and the bottom surface is removed. The manhole shaped like the assembly shown in Fig. 3 is completed by leveling the ground and placing concrete, but if it is useful for installing equipment etc. in the manhole, the supporting beam after completion of the manhole There is no problem in leaving such items.
【0014】[0014]
【発明の効果】本発明のマンホールの形成法によれば、
特殊な工事用設備を用いることなく地上からの簡単な掘
削作業を行うことによって、比較的に広くて利用しやす
い形状の空間を有する断面が長円形のマンホールを、短
い工期で安全且つ経済的に造成することができる。こう
して造成されたマンホールは、地下の作業場やトンネル
等の中継基地等として使用するに適したものである。
According to the manhole forming method of the present invention,
By performing simple excavation work from the ground without using special construction equipment, manholes with an oval cross section that have a relatively wide and easy-to-use space can be produced safely and economically in a short construction period. Can be created. The manhole thus created is suitable for use as an underground workshop or a relay station such as a tunnel.
【図面の簡単な説明】[Brief description of drawings]
【図1】本発明のマンホールの形成法を説明するための
概念図である。
FIG. 1 is a conceptual diagram for explaining a manhole forming method of the present invention.
【図2】本発明のマンホールの形成法において使用され
る壁面保護筒体の構造を示す外観斜視図である。
FIG. 2 is an external perspective view showing the structure of a wall surface protecting cylinder used in the method for forming a manhole of the present invention.
【図3】本発明のマンホールの形成法における壁面保護
筒体と壁面保護壁体とを組み合わせて得られた組立体の
外観斜視図である。
FIG. 3 is an external perspective view of an assembly obtained by combining the wall surface protection cylinder and the wall surface protection wall body in the manhole forming method of the present invention.
【符号の説明】[Explanation of symbols]
1 壁面保護筒体 1a、1b 分割部材 1c 刃部 1A、1B 結合部 2 壁面保護筒体 2a、2b 分割部材 2A、2B 結合部 3、4 シートパイル 5、6 支持梁 7、8 壁面保護壁体 9 支持梁 DESCRIPTION OF SYMBOLS 1 Wall surface protection cylinder 1a, 1b Dividing member 1c Blade part 1A, 1B Joining part 2 Wall surface protecting cylinder 2a, 2b Dividing member 2A, 2B Joining part 3, 4, Sheet pile 5, 6 Support beam 7, 8 Wall surface protecting wall body 9 Support beams

Claims (3)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 軸に平行な2個の結合部で嵌合した略対
    称な2個の分割部材からなる壁面保護筒体の対を該結合
    部を含む面が直方体の対向面位置を占めるように地盤に
    対し垂直に沈下させると共に該各壁面保護筒体内の土砂
    を除去して2個の縦孔を形成し、一方の壁面保護筒体の
    結合部から他方の壁面保護筒体の結合部に至る該直方体
    の側面位置に土留め手段を設け、該土留め手段と該壁面
    保護筒体とに包囲された範囲内に位置する該壁面保護筒
    体の分割部材を撤去すると共に該範囲内の土砂を除去す
    ることを特徴とするマンホールの形成法。
    1. A pair of wall protection cylinders composed of two substantially symmetrical dividing members fitted at two joints parallel to an axis such that the surface including the joints occupies the facing surface of a rectangular parallelepiped. And the earth and sand in each wall protection cylinder are removed to form two vertical holes, and one wall protection cylinder is joined to the other wall protection cylinder. Soil retaining means is provided at a side surface position of the rectangular parallelepiped that reaches, and the dividing member of the wall surface protecting cylinder located within a range surrounded by the soil retaining means and the wall protecting cylinder is removed, and earth and sand in the range are removed. A method for forming a manhole, which comprises removing
  2. 【請求項2】 壁面保護筒体内に支持梁を設けた後に該
    壁面保護筒体の分割部材を撤去する、請求項1記載のマ
    ンホールの形成法。
    2. The method for forming a manhole according to claim 1, wherein after the support beam is provided in the wall surface protection cylinder, the dividing member of the wall surface protection cylinder is removed.
  3. 【請求項3】 土留め手段として初期にシートパイルを
    用い、次に壁面保護壁体によって該シートパイルを置換
    する、請求項1又は2記載のマンホールの形成法。
    3. The method for forming a manhole according to claim 1, wherein a sheet pile is initially used as the soil retaining means, and then the sheet pile is replaced by a wall protection wall body.
JP6215629A 1994-09-09 1994-09-09 Forming method of manhole Withdrawn JPH0881969A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6215629A JPH0881969A (en) 1994-09-09 1994-09-09 Forming method of manhole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6215629A JPH0881969A (en) 1994-09-09 1994-09-09 Forming method of manhole

Publications (1)

Publication Number Publication Date
JPH0881969A true JPH0881969A (en) 1996-03-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP6215629A Withdrawn JPH0881969A (en) 1994-09-09 1994-09-09 Forming method of manhole

Country Status (1)

Country Link
JP (1) JPH0881969A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT4950U3 (en) * 2001-10-18 2002-04-25 Goebl Arthur Dipl Ing METHOD FOR PRODUCING A SHAFT AND SHAFT

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT4950U3 (en) * 2001-10-18 2002-04-25 Goebl Arthur Dipl Ing METHOD FOR PRODUCING A SHAFT AND SHAFT

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