JPH0345168B2 - - Google Patents
Info
- Publication number
- JPH0345168B2 JPH0345168B2 JP19678384A JP19678384A JPH0345168B2 JP H0345168 B2 JPH0345168 B2 JP H0345168B2 JP 19678384 A JP19678384 A JP 19678384A JP 19678384 A JP19678384 A JP 19678384A JP H0345168 B2 JPH0345168 B2 JP H0345168B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- cylinder
- shield machine
- frame
- open
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 15
- 239000011440 grout Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 7
- 239000003566 sealing material Substances 0.000 claims description 7
- 238000009412 basement excavation Methods 0.000 claims description 6
- 239000003673 groundwater Substances 0.000 description 9
- 238000010276 construction Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、高水位で極軟悪質の地盤中に筒体を
縦列に布設し、人、車輌、水、ケーブルその他を
通過させる地中トンネルを施工する筒体の地中布
設方法及びその装置に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an underground tunnel in which cylindrical bodies are laid in tandem in extremely soft and bad ground at a high water level, and through which people, vehicles, water, cables, etc. can pass. The present invention relates to an underground installation method for a cylindrical body and an apparatus therefor.
上部開口の箱形掘進であるオープンシールド機
を用いて地下水位の高い砂質層やＮ値が０前後の
極軟弱地層中に各種筒体を布設する場合は、地下
水又は極軟シルトがシールドの前後から押しよ
せ、シールド内に流入してシールド掘進は不可能
に近く、また、たとえ掘進できたとしても上下の
勾配の凹凸狂いが甚だしくシールドテール内で据
付ける完成筒体の勾配が大きく狂い設計図通り布
設できない。
When installing various types of cylinders in a sandy layer with a high groundwater level or in an extremely soft stratum with an N value of around 0 using an open shield machine that excavates in a box shape with an opening at the top, groundwater or extremely soft silt may leak through the shield. It is pushed from the front and back and flows into the shield, making it nearly impossible to dig into the shield.Even if it were possible to dig, the unevenness of the vertical slope is extremely uneven, and the slope of the completed cylindrical body installed inside the shield tail is greatly deviated from the design. Laying cannot be done as shown in the diagram.
その為に、従来、この種の極悪質地層に対して
は薬液注入による地盤改良を行つてから施工する
のが普通であつた。 For this reason, conventionally, it has been common practice to improve the ground by injecting chemical solutions for this type of extremely poor strata before construction work can be carried out.
前記のように従来のオープンシールド工法では
前記の悪質地盤に対してはほとんど用いられない
か又は薬液注入による地盤改良を必要としてい
る。
As mentioned above, the conventional open shield construction method is hardly used for the above-mentioned bad ground, or requires ground improvement by chemical injection.
本発明の目的は前記従来例の不都合を解消し、
オープンシールド工法で高価な薬液注入等の地盤
改良工法の併用なくして地下水位の高い砂質層や
極軟弱シルト層中でも筒体を布設することができ
る筒体の地中布設方法及びその装置を提供するこ
とにある。 The purpose of the present invention is to eliminate the disadvantages of the conventional example,
Provides a method and device for laying a tube underground, which allows the tube to be laid in a sandy layer or extremely soft silt layer with a high groundwater level without using the open shield method in conjunction with expensive chemical injection or other ground improvement methods. It's about doing.
前後端および上面開口のオープンシールド機内
に筒体を据え付け、この筒体及びそれに後続する
筒体を反力にシールドジヤツキでオープンシール
ド機を掘進させ、この掘進分に新たな筒体を据え
付けて同様の工程を繰り返す筒体の地中布設方法
において、オープンシールド機は、内部に前後に
区画する止水壁を設けたフロント部と、このフロ
ント部後部に前部が摺動自在に組合わさるテール
部とからなり、テール部前端に方形の枠体を取り
付け、この枠体の両側面に小型ジヤツキを介して
シール材付の側面止水柱体を連結したものであ
り、該小型ジヤツキを作動して止水柱体をフロン
ト部内側面に押しつけて、この止水柱体でフロン
ト部とテール部間の側部隙間を塞ぎ、また、テー
ル部底面に高さ調整具を配設し、その上に筒体を
据付けかつ後部筒体に連結し、さらに、筒体前面
には左右方向に押広げ自在な押当兼側面止水枠を
当て、これをオープンシールド機のシールドジヤ
ツキにて軽く押圧支持し、かつこの押当兼止水枠
体は左右に押し開いてテール部内面に密着させ、
次いで、筒体上部よりグラウト材を筒体外周とテ
ール部間の空隙部に填充した後、シールドジヤツ
キで押当兼止水枠体を介して筒体を反力としてオ
ープンシールド機を掘進させ、筒体とその外周の
グラウト材よりなる方形のパツケージをシールド
機前進後の溝内に残置し、該溝内周と前記パツケ
ージ外周面間の小隙間にグラウト材を注入填充す
ることを要旨とするものである。
A cylindrical body is installed in an open shield machine with front and rear ends and top openings, and the open shield machine is made to dig with a shield jack using this cylindrical body and the following cylindrical bodies as a reaction force, and a new cylindrical body is installed in this excavated area. In the underground installation method of a cylindrical body that repeats the same process, the open shield machine has a front section that has a water-stop wall inside that divides the front and back sections, and a tail that is slidably combined with the front section at the rear of this front section. A rectangular frame is attached to the front end of the tail part, and side water stop columns with sealing material are connected to both sides of this frame via small jacks, and the small jacks are actuated. A water-stopping column is pressed against the inner surface of the front section, and the water-stopping column closes the side gap between the front section and the tail section, and a height adjustment tool is arranged on the bottom of the tail section, and the cylinder is placed on top of it. It is installed and connected to the rear cylindrical body, and the front side of the cylindrical body is fitted with a pressing and side water stop frame that can be pushed out in the left and right direction, and this is lightly pressed and supported by the shield jack of the open shield machine. This pusher and water stopper frame is pushed open from side to side and brought into close contact with the inner surface of the tail.
Next, after filling the gap between the outer periphery of the cylinder and the tail with grout from the upper part of the cylinder, the open shield machine is made to dig using the cylinder as a reaction force using the shield jack via the pushing and water-stopping frame. The gist is to leave a rectangular package made of a cylindrical body and grout material on its outer periphery in the groove after the shield machine moves forward, and to inject and fill the small gap between the inner periphery of the groove and the outer periphery of the package. It is something to do.
本発明によれば、オープンシールド機のフロン
ト部の前からシールド機内へ侵入する泥土水は止
水壁で阻止され、フロント部の後部内面に挿入さ
れるテール部との隙間から流入する泥・土・水に
対しては、止水柱体をフロント部側面に圧着する
ことにより阻止される。
According to the present invention, mud and water that enters into the shield machine from in front of the front part of the open shield machine are blocked by the water stop wall, and mud and soil that flow in from the gap between the tail part and the tail part inserted into the rear inner surface of the front part.・Water is prevented by pressing the water-stop column to the side of the front section.
また、テール部後方からの地下水泥土は筒体周
辺とテール部内面間の間隙に充填されるグラウト
材で侵入が阻止される。 Further, groundwater mud from behind the tail portion is prevented from entering by the grout material filled in the gap between the periphery of the cylinder and the inner surface of the tail portion.
さらに、筒体前面に左右方向に押広げ自在な押
当兼側面止水枠を当て、これをオープンシールド
機のシールドジヤツキにて軽く押圧支持し、かつ
この押当兼止水枠体は左右に押し開いてテール部
内面に密着させることで、筒体周辺とテール部内
面間の間隙に充填するグラウト材がテール部内で
この押当兼止水枠体より前に流出するのを防止で
きる。 Furthermore, a pushing and side water-stopping frame that can be pushed out in the left and right directions is placed on the front of the cylinder, and this is lightly pressed and supported by the shield jack of the open shield machine. By pushing it open and bringing it into close contact with the inner surface of the tail portion, it is possible to prevent the grout material filling the gap between the periphery of the cylinder and the inner surface of the tail portion from flowing out within the tail portion before this pressing/water-stopping frame.
これに加えて、筒体とその外周填充材の一体的
方形のパツケージをテール部後方の溝内に残置す
るので、溝内面と前記パツケージ外周間の隙間は
テール部の肉厚だけの僅少なものとなり、しかも
この僅少の隙間にもグラウト材の填充を行うの
で、在来オープンシールド工法で、掘削されるテ
ール部後方の方形の溝の内面と筒体外周間との大
なる空隙の填充時間の遅延による溝周辺からの地
下水と泥土の流入による地盤沈下と付近構造物変
移の問題はなくなる。 In addition, since the integral rectangular package consisting of the cylindrical body and its outer periphery filler is left in the groove behind the tail portion, the gap between the inner surface of the groove and the outer periphery of the package is as small as the thickness of the tail portion. Moreover, since this small gap is also filled with grout, the time needed to fill the large gap between the inner surface of the rectangular groove behind the excavated tail and the outer periphery of the cylinder in the conventional open shield construction method is reduced. The problems of ground subsidence and displacement of nearby structures due to the inflow of groundwater and mud from around the ditch due to delays will be eliminated.
以下、図面について本発明の実施例を詳細に説
明する。
Embodiments of the present invention will be described in detail below with reference to the drawings.
第１図は本発明の筒体の地中布設方法及びその
装置の１実施例を示す縦断側面図で、図中１は前
後端および上面開口のオープンシールド機であ
る。 FIG. 1 is a longitudinal sectional side view showing one embodiment of the method and apparatus for laying a cylindrical body underground according to the present invention, and numeral 1 in the figure is an open shield machine with front and rear ends and an opening on the top surface.
このオープンシールド機１は、シールドジヤツ
キ７と、方向修正ジヤツキ７′を内装するもので、
前部のフロント部１1の後端と後部のテール部１2
の前端とが摺動自在すなわち抜差し可能に組合さ
れて構成され、該フロント部１1内には、これを
前後に区画する止水壁１１を設ける。 This open shield machine 1 is equipped with a shield jack 7 and a direction correction jack 7'.
The rear end of the front front section 1 1 and the rear tail section 1 2
The front end of the front part 11 is slidably assembled, that is, inserted and removed, and a water-stop wall 11 is provided inside the front part 11 to partition it into front and rear parts.
また、テール部１2の前端面には底部にシール
材を有する方形枠体１２を取付け、枠体１２外側
には、フロント部１1との接触面に各種シール材
を取付けた止水柱体１３を小型ジヤツキ１４によ
り強固に連結して、フロント部１1の内面に圧着
可能とする。 Furthermore, a rectangular frame body 12 having a sealing material at the bottom is attached to the front end surface of the tail portion 12, and a water stop column body 13 having various sealing materials attached to the contact surface with the front portion 11 is attached to the outside of the frame body 12. are firmly connected by a small jack 14 so that they can be crimped onto the inner surface of the front part 11 .
図中５は押当兼止水枠体で、これは後述のごと
くテール部１2の内部に据付けられる筒体３の前
面に配置されるもので、外形がコ字状又は逆コ字
状の押当兼側面止水枠体５2と、この止水枠体５2
の開放部側に小ジヤツキ６で強固に連結した押当
兼側面止水枠体５1の組合せからなり、この押当
兼止水枠体５はテール部１2および筒体３の接触
面にスポンジ等のシール材を介在させる。 In the figure, reference numeral 5 denotes a holding and water-stopping frame, which is placed in front of the cylinder 3 installed inside the tail part 12 as described later, and has a U-shaped or reversed U-shaped outer shape. Pusher/side water stop frame 5 2 and this water stop frame 5 2
It consists of a combination of a pusher/side water stopper frame 5 1 which is firmly connected to the open side of the tail part 1 2 with a small jack 6 , and this pusher/side water stopper frame 5 is connected to the contact surface of the tail part 1 2 and the cylinder body 3 . A sealing material such as a sponge is used.
発進基地上にオープンシールド機１を据え付
け、このオープンシールド機１のテール部１2内
に筒体３をセツトして、この筒体３および発進基
地内の反力壁を反力にシールドジヤツキ７でオー
プンシールド機１を推進させる。 The open shield machine 1 is installed on the starting base, the cylinder 3 is set inside the tail part 12 of the open shield machine 1, and the shield jack is mounted using the reaction force of the cylinder 3 and the reaction wall inside the launch base. 7 to propel open shield aircraft 1.
この推進は掘進となり、フロント部１1の切羽
を地上からシヤベルカー等の掘削機で掘削排土
し、この掘削排土部分にオープンシールド機１を
前進させる。 This propulsion is excavation, and the face of the front part 11 is excavated from the ground by an excavator such as a shovel car, and the open shield machine 1 is advanced to this excavated and unloaded part.
そして、オープンシールド機１が前進したなら
ば、シールドジヤツキ７を縮め、筒体３の前に新
たな筒体３を吊り降ろして再度オープンシールド
機１を掘進させることになる。 Then, when the open shield machine 1 moves forward, the shield jack 7 is retracted, a new cylinder 3 is suspended in front of the cylinder 3, and the open shield machine 1 is made to dig again.
このようなオープンシールド機１の掘進に際
し、オープンシールド機１のテール部１2前端の
方形枠体１２に小型ジヤツキにて連結される外側
にシール材を有する側面止水柱体１３を小型ジヤ
ツキ１４で外側のフロント部１1の内側側面に押
し付けて密着させる。 When the open shield machine 1 excavates in this manner, the side water stop column 13 having a sealing material on the outside, which is connected to the rectangular frame 12 at the front end of the tail part 1 2 of the open shield machine 1 with a small jack, is connected with a small jack 14. Press it against the inner side surface of the outer front part 1 1 to make it come into close contact.
これにより、フロント部１1とテール部１2とは
強固に連結されて一体化し、両者一体として前進
するとともに、この側面止水柱体１３でフロント
部１1とテール部１2との間隙が閉塞され、ここか
らの泥土水の流入を防止できる。 As a result, the front part 1 1 and the tail part 1 2 are firmly connected and integrated, and they move forward as one, and the gap between the front part 1 1 and the tail part 1 2 is closed by this side water stop column 13. This prevents muddy water from flowing in from here.
また、フロント部１1の前面すなわち切羽から
シールド機１内へ侵入する泥土水は止水壁１１で
阻止されるが、特にこの止水壁１１はオープンシ
ールド機１の前進とともに前進して切羽土砂を圧
密する。 In addition, mud and water entering the shield machine 1 from the front surface of the front part 11 , that is, from the face, is blocked by the water cutoff wall 11, but in particular, this water cutoff wall 11 moves forward as the open shield machine 1 moves forward, and mud and water from the face enter the shield machine 1. Consolidate.
その結果、圧密脱水される切羽部の地下水位は
在来地下水位より上昇し、切羽周辺土砂を加圧し
て周囲地盤の沈下を防ぎ切羽の圧密土砂だけを掘
削機にて掘削排土することができる。 As a result, the groundwater level at the face to be consolidated and dewatered rises above the conventional groundwater level, and the earth and sand around the face is pressurized to prevent the surrounding ground from subsidence and only the consolidated earth and sand at the face can be excavated and removed using an excavator. can.
なお、前記発進基地において、オープンシール
ド機１の据え付けは、テール部１2底面に配置す
る高さ調整具４の高さ分を考慮して、この分だけ
計画掘進ラインより下に位置させるようにする。 In addition, at the starting base, the open shield machine 1 is installed so that it is positioned below the planned excavation line by this amount, taking into account the height of the height adjustment tool 4 placed on the bottom of the tail part 12 . do.
極軟悪質地盤内を推進するオープンシールド機
１は設計勾配通りに前進することができず必然的
に凹凸の高低差を生じながら、蛇行掘削ラインの
Ｂ線（第６図）上を進行するので、土質により生
ずる凸部の高さ分だけを下に下げて、施工計画線
より深い位置を上下波打ちながら掘進させるもの
である。 The open shield machine 1, which is propelled through extremely soft and bad ground, is unable to advance according to the designed slope, and inevitably moves along line B (Figure 6) of the meandering excavation line, creating uneven height differences. , by lowering the height of the convex part caused by the soil quality, and excavating at a deeper position than the construction plan line while undulating up and down.
オープンシールド機１が掘進したならば、シー
ルドジヤツキ７を縮め、テール部１2の底面にコ
ンクリートブロツク等からなる高さ調整具４を配
置し、この高さ調整具４の上に地上から吊り降ろ
す筒体３を正しい設計高の底部勾配ラインＡ線
（第６図）上に沿わせて据付け、かつ後続の筒体
３と鋼棒その他で接続する。 Once the open shield machine 1 has dug, the shield jack 7 is retracted, a height adjustment tool 4 made of a concrete block or the like is placed on the bottom of the tail section 12 , and the machine is suspended from the ground on top of the height adjustment tool 4. The cylindrical body 3 to be lowered is installed along the bottom slope line A line (FIG. 6) at the correct design height, and connected to the succeeding cylindrical body 3 with a steel rod or the like.
次いで、この筒体３の前端に押当兼止水枠体５
を配置する。 Next, a pressing/water-stopping frame 5 is attached to the front end of this cylinder 3.
Place.
該押当兼止水枠体５は小ジヤツキ６を縮めて全
体を縮小した状態で地上からの吊り降ろし、吊り
上げを行い、筒体３の前面ではこれをオープンシ
ールド機１のシールドジヤツキ７で軽く押圧支持
する。 The pushing/water-stopping frame 5 is lowered and lifted from the ground with the small jack 6 contracted to reduce the overall size, and on the front of the cylindrical body 3, it is suspended by the shield jack 7 of the open shield machine 1. Lightly press and support.
かつ、小ジヤツキ６を伸ばしてこれを左右方向
に押広げ、テール部１2の内面に密着させる。 In addition, the small jack 6 is stretched and pushed apart in the left and right direction, so that it is brought into close contact with the inner surface of the tail portion 12 .
その際に、筒体３周辺とテール部１2間及び筒
体３の前面と押当兼止水枠体５間との間隙部９を
使用済のマツトレスなどのスポンジを利用したシ
ール材でシールする。 At that time, seal the gap 9 between the periphery of the cylinder 3 and the tail part 1 2 and between the front surface of the cylinder 3 and the pressing/water-stopping frame 5 with a sealant using a sponge such as a used pine tress. do.
そして、筒体３の上部よりセメントミルクや水
ガラス＋セメント（LW）などの各種グラウト材
２を注入填充し、テール部１2と筒体３との間隙
部９にグラウト材２を填充しする。 Then, various grouting materials 2 such as cement milk or water glass + cement (LW) are injected into the upper part of the cylinder 3, and the gap 9 between the tail part 12 and the cylinder 3 is filled with the grouting material 2. .
前記押当兼止水枠体５があるので、このグラウ
ト材２はテール部１2内でこの押当兼止水枠体５
より前に流出することはない。 Since there is the above-mentioned holding and water-stopping frame 5, this grout material 2 is applied to the holding and water-stopping frame 5 within the tail portion 12.
It will not leak out earlier.
また、テール部１2の後部で筒体３との間隙部
９は前記グラウト材２があることや押当兼止水枠
体５の存在で閉塞され、地下水や泥土水がこのテ
ール部１2の後方からオープンシールド機１内に
侵入することが防止できる。 In addition, the gap 9 between the rear part of the tail part 1 2 and the cylinder 3 is blocked by the presence of the grout material 2 and the presence of the pressing/water-stopping frame 5, so that groundwater and mud water can leak into the tail part 1 2. Intrusion into the open shield machine 1 from behind can be prevented.
このようにしてから、シールドジヤツキ７によ
り押当兼止水枠体５を介して筒体３を反力として
（方向修正ジヤツキ７′でフロント部１1の方向を
修正しながら）オープンシールド機１を地中に推
進させる。 After doing this, the shield jack 7 applies a reaction force to the cylindrical body 3 via the pushing and water-stopping frame 5 (while correcting the direction of the front part 11 with the direction correction jack 7'). Propel 1 underground.
該オープンシールド機１が推進すると、テール
部１2後方に掘られた跡の溝１０内に筒体３を内
包するグラウト材２のパツケージが残置される。 When the open shield machine 1 is propelled, a package of grout material 2 containing a cylinder 3 is left behind in a groove 10 dug behind the tail portion 12.
そこで、テール部１2の進行中にこのパツケー
ジと溝１０間に存在するテール部肉厚に相当する
僅少の間隙部９′にグラウト材２を填充する。 Therefore, while the tail portion 12 is advancing, a small gap 9' corresponding to the thickness of the tail portion existing between the package and the groove 10 is filled with the grout material 2.
前記一連の作業を一サイクル工程とし、シール
ド掘進作業が完了すると押当兼止水枠体５を前方
へ移動して、テール部１2内に再び高さ調整具４
を所要高さに修正し、この上に筒体３を正しい設
計勾配ラインＡに合わせて据付け、前記の作業を
繰返す。 The series of operations described above is considered to be one cycle process, and when the shield excavation work is completed, the pressing/water-stopping frame 5 is moved forward and the height adjustment tool 4 is inserted again into the tail portion 1 2 .
is corrected to the required height, the cylindrical body 3 is installed on top of it in alignment with the correct design slope line A, and the above operations are repeated.
以上述べたように本発明の筒体の地中布設方法
及びその装置は、従来のオープンシールド機を用
いたオープンシールド工法では高価な薬液注入等
の地盤改良工法の補助工法の併用なくして施工が
不可能とされたは地下水位の高い砂質層やＮ値が
０又は、モンケンが自沈するなどの極軟弱シルト
層中でも、高価な補助工法なしに施工することが
でき、施工費のコストダウンと工期の短縮を実現
できるものである。
As described above, the underground installation method and device for a cylindrical body of the present invention is such that the conventional open shield construction method using an open shield machine can be constructed without the use of auxiliary methods for ground improvement construction such as expensive chemical injection. Even in sandy layers with high groundwater levels, N-values of 0, or extremely soft silt layers where Monken scuttles, it can be constructed without expensive auxiliary methods, reducing construction costs. This makes it possible to shorten the construction period.
第１図は本発明の筒体の地中布設方法及びその
装置１実施例を示す側面図、第２図は前記実施例
のフロント部とテール部間の止水手段を示す説明
図、第３図は第１図のＡ−Ａ線断面図、第４図は
同上Ｂ−Ｂ線断面図、第５図は同上Ｃ−Ｃ線断面
図、第６図は本発明のシールド掘削蛇行ラインＢ
と、筒体設計布設ラインＡの関係を示す説明図で
ある。
１……オープンシールド機、１1……フロント
部、１2……テール部、２……グラウト材、３…
…筒体、４……高さ調整具、５……押当兼止水枠
体、５1……押当兼側面止水枠体、５2……押当兼
上下側面止水枠体、６……小ジヤツキ、７……シ
ールドジヤツキ、７′……方向修正ジヤツキ、９，
９′……間隙部、１０……溝、１１……止水壁、
１２……枠体、１３……側面止水柱体、１４……
小型ジヤツキ。
FIG. 1 is a side view showing an embodiment of the underground installation method and apparatus for a cylindrical body according to the present invention, FIG. The figure is a sectional view taken along the line A-A of Fig. 1, Fig. 4 is a sectional view taken along the line B-B of the same as above, Fig. 5 is a sectional view taken along the line C-C of the same as above, and Fig. 6 is a sectional view of the shield excavation meandering line B of the present invention.
FIG. 2 is an explanatory diagram showing the relationship between the cylinder body design and installation line A. 1... Open shield machine, 1 1 ... Front section, 1 2 ... Tail section, 2... Grout material, 3...
... Cylindrical body, 4... Height adjuster, 5... Pushing and water stopping frame, 5 1 ... Pushing and side water stopping frame, 5 2 ... Pushing and upper and lower side water stopping frame, 6...Small jack, 7...Shield jack, 7'...Direction correction jack, 9,
9′...Gap portion, 10...Groove, 11...Water stop wall,
12... Frame body, 13... Side water stop column body, 14...
Small jack.
Claims (1)
内に筒体を据え付け、この筒体及びそれに後続す
る筒体を反力にシールドジヤツキでオープンシー
ルド機を掘進させ、この掘進分に新たな筒体を据
え付けて同様の工程を繰り返す筒体の地中布設方
法において、 オープンシールド機は、内部に前後に区画する
止水壁を設けたフロント部と、このフロント部後
部に前部が摺動自在に組合わさるテール部とから
なり、テール部前端に方形の枠体を取り付け、こ
の枠体の両側面に小型ジヤツキを介してシール材
付の側面止水柱体を連結したものであり、 該小型ジヤツキを作動して止水柱体をフロント
部内側面に押しつけて、この止水柱体でフロント
部とテール部間の側部隙間を塞ぎ、また、テール
部底面に高さ調整具を配設し、その上に筒体を据
付けかつ後部筒体に連結し、さらに、筒体前面に
は左右方向に押広げ自在な押当兼側面止水枠を当
て、これをオープンシールド機のシールドジヤツ
キにて軽く押圧支持し、かつこの押当兼止水枠体
は左右に押し開いてテール部内面に密着させ、 次いで、筒体上部よりグラウト材を筒体外周と
テール部間の空隙部に填充した後、シールドジヤ
ツキで押当兼止水枠体を介して筒体を反力として
オープンシールド機を掘進させ、筒体とその外周
のグラウト材よりなる方形のパツケージをシール
ド機前進後の溝内に残置し、 該溝内周と前記パツケージ外周面間の小隙間に
グラウト材を注入填充することを特徴とする筒体
の地中布設方法。 ２ 内部に前後に区画する止水壁を設けたフロン
ト部と、このフロント部後部に前部が摺動自在に
組合わさるテール部とからなり、テール部前端に
方形の枠体を取り付け、この枠体の両側面に小型
ジヤツキを介してシール材付の側面止水柱体を連
結したオープンシールド機と、該オープンシール
ド機に据付けられる筒体前面に配置される押当枠
体で、コ字状の枠体とこの枠体の開放側に小ジヤ
ツキで連結した止水柱体とからなる押当兼止水枠
体とからなることを特徴とした筒体の地中布設装
置。[Claims] 1. A cylindrical body is installed in an open shield machine with front and rear ends and top openings, and the open shield machine is excavated by a shield jack using this cylindrical body and the following cylindrical bodies as reaction force, and the excavation portion is In the underground installation method for cylinders, in which a new cylinder is installed and the same process is repeated, the open shield machine has a front section with a water-stop wall inside that divides the front and back sections, and a front section at the rear of this front section. A rectangular frame is attached to the front end of the tail, and side water stop columns with sealing material are connected to both sides of this frame via small jacks. The small jack is operated to press the water-stopping column against the inner surface of the front part, and the water-stopping column closes the side gap between the front part and the tail part, and a height adjustment tool is arranged on the bottom of the tail part. The cylinder is installed on top of it and connected to the rear cylinder, and the front of the cylinder is fitted with a pusher and side water stop frame that can be pushed out in the left and right directions, and this is used as a shield jack for an open shield machine. The holding/water-stopping frame was pushed open from side to side to make it come into close contact with the inner surface of the tail part, and then grout was filled from the top of the cylinder into the gap between the outer periphery of the cylinder and the tail part. After that, the open shield machine is made to dig using the cylinder body as a reaction force through the pushing and water-stopping frame using the shield jack, and the rectangular package made of the cylinder body and the grout material on its outer periphery is dug into the trench after the shield machine advances. A method for installing a cylindrical body underground, characterized in that: a small gap between the inner periphery of the groove and the outer periphery of the package is injected and filled with grout material. 2 It consists of a front part with a water-stop wall that divides the front and back inside, and a tail part in which the front part is slidably assembled to the rear of this front part, and a rectangular frame is attached to the front end of the tail part, and this frame An open shield machine has side water stop columns with sealing material connected to both sides of the body via small jacks, and a push frame body placed on the front of the cylinder installed on the open shield machine. A cylindrical underground installation device comprising a holding and water-stopping frame body consisting of a frame body and a water-stopping column body connected to the open side of the frame body with small jacks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19678384A JPS6175196A (en) | 1984-09-21 | 1984-09-21 | Method and apparatus for laying cylinder in underground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19678384A JPS6175196A (en) | 1984-09-21 | 1984-09-21 | Method and apparatus for laying cylinder in underground |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2311201A Division JPH03169915A (en) | 1990-11-16 | 1990-11-16 | Underground laying of case body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6175196A JPS6175196A (en) | 1986-04-17 |
| JPH0345168B2 true JPH0345168B2 (en) | 1991-07-10 |
Family
ID=16363558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19678384A Granted JPS6175196A (en) | 1984-09-21 | 1984-09-21 | Method and apparatus for laying cylinder in underground |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6175196A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0249896A (en) * | 1988-08-11 | 1990-02-20 | Koichi Uemura | Open shield method and machine thereof |
| JPH03169914A (en) * | 1989-11-27 | 1991-07-23 | Aisawa Kogyo Kk | Laying of underground structure and open shield machine therefor |
-
1984
- 1984-09-21 JP JP19678384A patent/JPS6175196A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6175196A (en) | 1986-04-17 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |