JP3466520B2 - Tunnel construction method and tunnel - Google Patents
Tunnel construction method and tunnelInfo
- Publication number
- JP3466520B2 JP3466520B2 JP30154799A JP30154799A JP3466520B2 JP 3466520 B2 JP3466520 B2 JP 3466520B2 JP 30154799 A JP30154799 A JP 30154799A JP 30154799 A JP30154799 A JP 30154799A JP 3466520 B2 JP3466520 B2 JP 3466520B2
- Authority
- JP
- Japan
- Prior art keywords
- tunnel
- constructing
- work
- upper half
- ground
- 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
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明はトンネルの構築方法
およびトンネルに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tunnel construction method and a tunnel.
【０００２】[0002]
【従来の技術】従来、トンネルの施工においては、図１
２に示すようにトンネル１０１の上半部を掘削する時の
トンネル１０１の安定の確保および地表面１０３の沈下
対策として、先受け工１０９をトンネル１０１の上半部
分に施工していた。また、トンネル支保工１１３の沈下
対策のための脚部補強および下半掘削時の側壁防護のた
めのフットパイル１１１については、トンネル１０１坑
内より施工していた。尚、図１２において、１１５は、
コンクリートである。2. Description of the Related Art Conventionally, as shown in FIG.
As shown in FIG. 2, as a measure to secure the stability of the tunnel 101 when excavating the upper half of the tunnel 101 and to prevent the ground surface 103 from sinking, the front receiving work 109 was constructed on the upper half of the tunnel 101. Further, the foot pile 111 for reinforcing the leg portion for the subsidence countermeasure of the tunnel support work 113 and for protecting the side wall at the time of excavating the lower half was constructed from the inside of the tunnel 101. In FIG. 12, 115 is
It is concrete.
【０００３】[0003]
【発明が解決しようとする課題】ところで、この施工方
法の場合、地表面沈下抑制効果は少ない。また、側壁防
護のためのフットパイル１１１を、トンネル坑内から施
工するので、トンネル掘削の工程に影響があり、工期が
延びる等の問題点がある。By the way, in the case of this construction method, the effect of suppressing the ground subsidence is small. Further, since the foot pile 111 for protecting the side wall is constructed from inside the tunnel mine, there is a problem that the tunnel excavation process is affected and the construction period is extended.
【０００４】本発明はこのような問題を鑑みてなされた
ものでその目的とするところは、トンネル掘削時におい
て地表面の沈下が少なく、また、工期を短縮できるトン
ネルの構築方法およびトンネルを提供することにある。The present invention has been made in view of the above problems, and an object of the present invention is to provide a tunnel construction method and a tunnel in which ground subsidence is small during tunnel excavation and the construction period can be shortened. Especially.
【０００５】[0005]
【課題を解決するための手段】前述した目的を達成する
ために本発明の第１の発明は、（ａ）トンネルの計画位
置の側方部に、地表面から注入管により固化材を地盤に
注入して改良体を設ける工程と、（ｂ）前記トンネルの
計画位置に沿って、先受け工を施工しつつトンネルの掘
削を行う工程と、を具備し、前記先受け工の一部が前記
改良体に重複して設けられ、トンネル周辺にグランドア
ーチが形成されることを特徴とするトンネルの構築方法
である。In order to achieve the above-mentioned object, the first invention of the present invention is: (a) In a lateral portion of a planned position of a tunnel, a solidified material is applied to the ground by an injection pipe from the ground surface. And a step of (b) excavating the tunnel while constructing a preparatory work along the planned position of the tunnel, wherein a part of the preparatory work is performed. The method for constructing a tunnel is characterized in that the ground arch is formed around the tunnel so as to be overlapped with the improved body.
【０００６】第２の発明は、第１の発明によるトンネル
の構築方法により構築されたことを特徴とするトンネル
である。A second invention is a tunnel constructed by the tunnel construction method according to the first invention.
【０００７】[0007]
【発明の実施の形態】以下、図面に基づいて本発明の実
施の形態を詳細に説明する。図１から図１１は、トンネ
ルの構築方法を示す図である。以下、図１から図１１に
基づき、トンネルの構築方法を説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. 1 to 11 are diagrams showing a method of constructing a tunnel. Hereinafter, a method of constructing a tunnel will be described with reference to FIGS. 1 to 11.
【０００８】図１、図２、図４、図６は、トンネルの構
築方法の説明図であり、トンネルの側方から見た図であ
る。図３は図２のＡ−Ａ断面図、図５は、図４のＢ−Ｂ
断面図、図７、図８は、図６のＣ−Ｃ断面図、図９、図
１０は、図６のＤ−Ｄ断面図、図１１は、完成したトン
ネルの断面図である。1, FIG. 2, FIG. 4, and FIG. 6 are explanatory views of a method of constructing a tunnel, and are views seen from the side of the tunnel. 3 is a sectional view taken along line AA of FIG. 2, and FIG. 5 is taken along line BB of FIG.
Sectional views, FIGS. 7 and 8 are CC sectional views of FIG. 6, FIGS. 9 and 10 are DD sectional views of FIG. 6, and FIG. 11 is a sectional view of the completed tunnel.
【０００９】図１に示す地表面１の下方に、計画トンネ
ル位置３にトンネルを構築する場合、図２および図３に
示すように、計画トンネル位置３の側方部に、地表面１
より、注入管７を挿入し、注入管７よりセメントミルク
等の固化材等を地盤内に注入し、改良体５を構築して、
計画トンネル位置３の側方部の地盤改良を行う。改良体
５として、高圧噴射攪拌系等を用いると、品質のよい改
良体５が得られる。このようにして、計画トンネル位置
３の側方部分に連続して改良体５を設ける。When constructing a tunnel at the planned tunnel position 3 below the ground surface 1 shown in FIG. 1, as shown in FIGS. 2 and 3, the ground surface 1 is provided at the side of the planned tunnel position 3.
Then, the injection pipe 7 is inserted, and the solidified material such as cement milk is injected into the ground through the injection pipe 7 to construct the improved body 5,
Ground improvement on the side of the planned tunnel position 3 will be carried out. If a high-pressure jet stirring system or the like is used as the improvement body 5, the quality improvement body 5 can be obtained. In this way, the improving body 5 is provided continuously to the side portion of the planned tunnel position 3.
【００１０】図４において、６ａは、既に掘削が完了し
たトンネル上半の切羽面を示す。この状態で、トンネル
の上半部に、先受け工９を設ける（図５)。先受け工法
としては、長尺鋼管先受け工法等を用いる場合は、ジャ
ンボ（図示せず）等の機械により、地盤内を掘削し、こ
の孔に鋼管９を設けた後、鋼管９の周囲にセメントミル
ク等を注入する。この時、鋼管９の両外側の鋼管９ａ、
９ｂ等は、改良体５に重複するように設けられる（図
５）。In FIG. 4, 6a shows the face of the upper half of the tunnel, which has already been excavated. In this state, the front receiving work 9 is provided in the upper half part of the tunnel (FIG. 5). When the long steel pipe front receiving method is used as the front receiving method, the inside of the ground is excavated by a machine such as a jumbo (not shown), and the steel pipe 9 is provided in this hole, and then the steel pipe 9 is surrounded. Inject cement milk, etc. At this time, the steel pipes 9a on both outer sides of the steel pipe 9,
9b etc. are provided so that it may overlap with the improvement body 5 (FIG. 5).
【００１１】鋼管９ａ、９ｂを改良体５に重複させるこ
とにより、トンネル掘削前にトンネル周辺に堅固なグラ
ンドアーチができることから、その内側のトンネル掘削
の安全性が増すとともに、地表面１への影響を防ぐ効果
を得る。すなわち、トンネルの掘削予定場所の上部は、
鋼管９で保護され、側部は改良体５で保護されるので、
内側のトンネル掘削時の安全性が増す。By overlapping the steel pipes 9a and 9b with the improvement body 5, a strong ground arch can be formed around the tunnel before the tunnel is excavated. Therefore, the safety of the tunnel excavation inside the tunnel is increased and the influence on the ground surface 1 is increased. Get the effect of preventing. That is, the upper part of the tunnel excavation site is
Since it is protected by the steel pipe 9 and the side part is protected by the improvement body 5,
The safety when excavating the inner tunnel is increased.
【００１２】次に、トンネルの上半掘削部１１の掘削を
行う(図６、図７)。即ち、図４に示す切羽６ａに対し
て、ブレーカー等を用いて掘削し、上半部分の支保工
（鋼製支保工＋吹付けコンクリート）１３を設ける（図
８）。この時、支保工（鋼製支保工＋吹付けコンクリー
ト）１３は、先行して施工してある改良体５によって支
持される。図８は、上半掘削部１１が掘削された状態の
トンネルを示す。Next, the upper half excavation portion 11 of the tunnel is excavated (FIGS. 6 and 7). That is, the face 6a shown in FIG. 4 is excavated by using a breaker or the like, and an upper half supporting work (steel supporting work + shotcrete) 13 is provided (FIG. 8). At this time, the supporting work (steel supporting work and shotcrete) 13 is supported by the improvement body 5 which was constructed in advance. FIG. 8 shows the tunnel in a state where the upper half excavation portion 11 has been excavated.
【００１３】また、図９から図１０に示されるように、
上半部の切羽６ｂよりも後方で下半掘削部１７の掘削を
行う。即ち、下半掘削部１７をブレーカ（図示せず）等
で距離Ｌ１ずつ掘削し（図９）、下半部分の支保工（鋼
製支保工＋吹付けコンクリート）１９を設ける（図１
０）。Further, as shown in FIGS. 9 to 10,
Excavation of the lower half excavation part 17 is performed behind the face 6b of the upper half. That is, the lower half excavating portion 17 is excavated by a breaker (not shown) or the like at each distance L1 (FIG. 9), and the supporting work (steel supporting work + spraying concrete) 19 of the lower half portion is provided (FIG. 1).
0).
【００１４】下半部分を掘削する時には、先行してトン
ネル側部に改良体５が施工してあるため、改良体５によ
って、側壁防護の効果が得られる。以後、図４から、図
１０に示す工程を繰り返す。そして図１１に示すよう
に、内側に、コンクリート１５、２１を更に設ける。When excavating the lower half portion, since the improving body 5 is applied to the side of the tunnel in advance, the improving body 5 provides the side wall protection effect. Thereafter, the steps shown in FIG. 4 to FIG. 10 are repeated. Then, as shown in FIG. 11, concrete 15 and 21 are further provided inside.
【００１５】以上のように、本実施の形態によれば、改
良体５を設けることにより、先受け工９と改良体５とで
形成するグランドアーチにより地表面１の沈下が防がれ
る。また、支保工（鋼製支保工＋吹付けコンクリート）
１３は、改良体５に支持されるので安定する。さらに、
下半掘削時には、改良体５により、側壁防護の役割が行
われ、安全にトンネルを構築できる。また、改良体５
は、地表面１から施工されるので、施工が容易であり、
工期延長の原因とはならない。As described above, according to the present embodiment, by providing the improvement body 5, the ground arch formed by the front receiving work 9 and the improvement body 5 prevents the ground surface 1 from sinking. Also, support (steel support + shotcrete)
13 is stable because it is supported by the improving body 5. further,
At the time of excavating the lower half, the improved body 5 plays a role of protecting the side wall, so that the tunnel can be safely constructed. In addition, improved body 5
Is constructed from the ground surface 1, so construction is easy,
It does not cause the extension of the construction period.
【００１６】[0016]
【発明の効果】以上、詳細に説明したように本発明によ
れば、トンネル掘削時において地表面の沈下が少なく、
また、工期を短縮できるトンネルの構築方法およびトン
ネルを提供することができる。As described above in detail, according to the present invention, the subsidence of the ground surface during tunnel excavation is small,
Further, it is possible to provide a tunnel construction method and a tunnel that can shorten the construction period.
【図１】トンネルの構築方法を示す図FIG. 1 is a diagram showing a method of constructing a tunnel.
【図２】トンネルの構築方法を示す図FIG. 2 is a diagram showing a tunnel construction method.
【図３】トンネルの構築方法を示す図FIG. 3 is a diagram showing a method of constructing a tunnel.
【図４】トンネルの構築方法を示す図FIG. 4 is a diagram showing a method of constructing a tunnel.
【図５】トンネルの構築方法を示す図FIG. 5 is a diagram showing a method of constructing a tunnel.
【図６】トンネルの構築方法を示す図FIG. 6 is a diagram showing a method of constructing a tunnel.
【図７】トンネルの構築方法を示す図FIG. 7 is a diagram showing a method of constructing a tunnel.
【図８】トンネルの構築方法を示す図FIG. 8 is a diagram showing a tunnel construction method.
【図９】トンネルの構築方法を示す図FIG. 9 is a diagram showing a tunnel construction method.
【図１０】トンネルの構築方法を示す図FIG. 10 is a diagram showing a method of constructing a tunnel.
【図１１】トンネルの構築方法を示す図FIG. 11 is a diagram showing a method of constructing a tunnel.
【図１２】従来のトンネルの断面図FIG. 12 is a sectional view of a conventional tunnel.
１………地表面
３………計画トンネル位置
５………改良体
９………鋼管
１１………上半掘削部
１３、１９………支保工（鋼製支保工＋吹付けコンクリ
ート）
１７………下半掘削部1 ………… Ground surface 3 ………… Planned tunnel position 5 ………… Improved body 9 ………… Steel pipe 11 ………… Upper half excavation part 13, 19 ……… Supporting work (Steel supporting work + Shotcrete) 17 ………… Lower half excavation section
フロントページの続き (72)発明者 大屋 博史 東京都新宿区西新宿三丁目７番１号 鹿 島建設株式会社関東支店内 (72)発明者 萩原 智寿 東京都港区元赤坂一丁目２番７号 鹿島 建設株式会社内 (72)発明者 藤井 健 東京都港区元赤坂１丁目６番４号 ケミ カルグラウト株式会社内 (72)発明者 宇野 泰明 東京都港区元赤坂１丁目６番４号 ケミ カルグラウト株式会社内 (56)参考文献 特公 平４−15878（ＪＰ，Ｂ２) 特公 昭55−31271（ＪＰ，Ｂ２) 特公 昭46−26703（ＪＰ，Ｂ１) (58)調査した分野(Int.Cl.7，ＤＢ名) E21D 9/04 E21D 9/00 Front page continuation (72) Inventor Hiroshi Oya 3-7-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Kashima Construction Co., Ltd. Kanto Branch (72) Inventor Tomohisa Hagiwara 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Ken Fujii 1-6-4 Moto-Akasaka, Minato-ku, Tokyo Kemi Kalgrout Co., Ltd. (72) Inventor Yasuaki Uno 1-4-6 Moto-Akasaka, Minato-ku, Tokyo Kemi Kalgrout Within the corporation (56) References Japanese Patent Publication 4-15878 (JP, B2) Japanese Patent Publication 55-31271 (JP, B2) Japanese Publication 46-26703 (JP, B1) (58) Fields investigated (Int. Cl. 7 , DB name) E21D 9/04 E21D 9/00
Claims (4)
地表面から注入管により固化材を地盤に注入して改良体
を設ける工程と、 （ｂ）前記トンネルの計画位置に沿って、先受け工を施
工しつつトンネルの掘削を行う工程と、 を具備し、 前記先受け工の一部が前記改良体に重複して設けられ、
トンネル周辺にグランドアーチが形成されることを特徴
とするトンネルの構築方法。1. (a) On the side of the planned position of the tunnel,
A step of injecting a solidifying material into the ground from the ground surface with an injection pipe to provide an improved body, and (b) a step of excavating the tunnel along with the planned position of the tunnel while constructing a preparatory work. However, a part of the preceding work is provided to overlap the improved body,
A method of constructing a tunnel, characterized in that a grand arch is formed around the tunnel.
受け工を施工し、トンネルの上半部を掘削し、トンネル
の上半部の支保工を設け、トンネルの下半部を掘削し、
トンネルの下半部の支保工を設けるものである請求項１
記載のトンネルの構築方法。2. In the step (b), a top receiving work is performed on the upper surface of the tunnel, the upper half of the tunnel is excavated, a support work for the upper half of the tunnel is provided, and the lower half of the tunnel is excavated. Then
The support work for the lower half of the tunnel is provided.
How to build the described tunnel.
持させることを特徴とする請求項２記載のトンネルの構
築方法。3. The method for constructing a tunnel according to claim 2, wherein the support work of the upper half portion is supported by the improved body.
り構築されたことを特徴とするトンネル。4. A tunnel constructed by the method for constructing a tunnel according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30154799A JP3466520B2 (en) | 1999-10-22 | 1999-10-22 | Tunnel construction method and tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30154799A JP3466520B2 (en) | 1999-10-22 | 1999-10-22 | Tunnel construction method and tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001123788A JP2001123788A (en) | 2001-05-08 |
| JP3466520B2 true JP3466520B2 (en) | 2003-11-10 |
Family
ID=17898260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30154799A Expired - Fee Related JP3466520B2 (en) | 1999-10-22 | 1999-10-22 | Tunnel construction method and tunnel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3466520B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016223127A (en) * | 2015-05-29 | 2016-12-28 | 大成建設株式会社 | Tunnel construction method |
-
1999
- 1999-10-22 JP JP30154799A patent/JP3466520B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016223127A (en) * | 2015-05-29 | 2016-12-28 | 大成建設株式会社 | Tunnel construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001123788A (en) | 2001-05-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106761778A (en) | A kind of underground digging in subway station construction technology suitable for upper-soft lower-hard ground | |
| CN107060803A (en) | A kind of method for tunnel construction of utilization pipe curtain slip casting | |
| CN107905814A (en) | Large span loess tunnel top bar CD construction methods | |
| CN107165161A (en) | The construction method of the continuous three axes agitating pile water-stop curtain interplantation support pile of foundation ditch | |
| JP3466520B2 (en) | Tunnel construction method and tunnel | |
| JP5382432B2 (en) | Excavation method of adjacent twin tunnel | |
| JP6857097B2 (en) | How to build a tunnel | |
| JP3787796B2 (en) | Construction method of tunnel wellhead on steep slope | |
| JP2001207788A (en) | Limited backfilling injection work method in underground structure construction method | |
| JP3621880B2 (en) | Tunnel construction method and tunnel | |
| JPH11152986A (en) | Protection method for shielding excavation in section covered with thin soil layer | |
| JP4633273B2 (en) | Earth retaining method and equipment | |
| JPH0313689A (en) | Construction method for tunnel | |
| CN108708739A (en) | Shallow-buried exposed construction method suitable for ultra-large section hard rock tunnel | |
| JP3980299B2 (en) | Tunnel construction method and tunnel | |
| JP2527893B2 (en) | Reinforcement of existing foundation | |
| JP2932197B2 (en) | Excavation method for large or very large tunnel | |
| JP2599296B2 (en) | How to correct the slope | |
| JPH0776988A (en) | Preliminary construction method for tunnel facing front bedrock | |
| JP2659612B2 (en) | Column type continuous underground wall construction method | |
| JPH11336466A (en) | Construction method of tunnel | |
| JP3269606B2 (en) | Tunnel receiving method | |
| JPH04336117A (en) | Landslide protection stabilizing construction method | |
| JP3470164B2 (en) | Ground improvement method of shield machine start section | |
| JP2000337078A (en) | Natural ground prelining construction for tunnel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TRDD | Decision of grant or rejection written | ||
| R150 | Certificate of patent or registration of utility model |
Ref document number: 3466520 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120829 Year of fee payment: 9 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120829 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20150829 Year of fee payment: 12 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |