JPH11159275A - Whale bone construction method of large cross-section tunnel - Google Patents

Whale bone construction method of large cross-section tunnel

Info

Publication number
JPH11159275A
JPH11159275A JP32853197A JP32853197A JPH11159275A JP H11159275 A JPH11159275 A JP H11159275A JP 32853197 A JP32853197 A JP 32853197A JP 32853197 A JP32853197 A JP 32853197A JP H11159275 A JPH11159275 A JP H11159275A
Authority
JP
Japan
Prior art keywords
tunnel
ground
excavated
arch
shaft
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.)
Granted
Application number
JP32853197A
Other languages
Japanese (ja)
Other versions
JP3824114B2 (en
Inventor
Toshio Hayashi
Masato Honda
Shigehito Kaji
Yoshio Mitarai
Masakazu Ochiai
Tsugio Takebayashi
Takefumi Yamamoto
武文 山本
良夫 御手洗
正人 本多
敏夫 林
亜夫 竹林
正和 落合
茂仁 鍛冶
Original Assignee
Nagatomo Shigeki
長友 成樹
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 Nagatomo Shigeki, 長友 成樹 filed Critical Nagatomo Shigeki
Priority to JP32853197A priority Critical patent/JP3824114B2/en
Publication of JPH11159275A publication Critical patent/JPH11159275A/en
Application granted granted Critical
Publication of JP3824114B2 publication Critical patent/JP3824114B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/04Driving tunnels or galleries through loose materials; Apparatus therefor not otherwise provided for

Abstract

PROBLEM TO BE SOLVED: To excavate a large cross-section tunnel safely and rapidly by previously reinforcing and improving the natural ground over the whole length of a tunnel construction area. SOLUTION: After a top heading 2 is excavated through over the whole length of a construction area of a tunnel 1, bent boring is performed along the peripheral edge of cross section of the tunnel 1 at specified spaces from the top heading 2, and a steel pipe 3 is installed in a boring. A filler is filled into the natural ground around the tunnel form the steel pipe 3 to construct an artificial natural ground arch 4. The tunnel 1 is then excavated, a hanging form 6 is advanced, and concrete is placed for secondary lining to excavate the tunnel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing an artificial ground arch by improving and reinforcing a ground around a tunnel, and excavating the tunnel safely and quickly.

[0002]

2. Description of the Related Art Conventionally, as a method of digging a tunnel on soft ground, in order to reinforce the ground and enhance independence, and to prevent collapse, the digging direction from the face to the ground near the tunnel is taken. There is one that performs drilling, inserts an injection pipe into the borehole, injects the ground hardening material, reinforces the surrounding ground, excavates the reinforced part and performs the support lining process while repeating the process (Japanese Unexamined Patent Publication No. 1-137094)
No.).

[0003]

However, in such a construction method, the operation of performing boring and pouring and the operation of excavating and lining a tunnel must be performed alternately and repeatedly to reinforce the ground. There is a problem that the work is complicated, the efficiency is poor, and the construction period is prolonged.

SUMMARY OF THE INVENTION The present invention solves such a problem in tunnel excavation. The present invention aims to safely and quickly excavate a large-section tunnel by performing reinforcement improvement of the ground in advance over the entire length of the tunnel section. The purpose is to provide a method that can be used.

[0005]

According to the whale bone method (WBR method) of a large section tunnel according to the present invention, a tunnel is excavated and penetrated over the entire length of the tunnel section, and then the tunnel section is cut from the tunnel at predetermined intervals. Bend along the perimeter and set up an injection pipe in the borehole, inject the injection material into the ground around the tunnel from the injection pipe to create an artificial ground arch, and then excavate the tunnel and cut the formwork. The above-mentioned subject is solved by excavating a tunnel by moving forward and placing concrete and performing secondary lining.

In this method, first, a tunnel is rapidly excavated and penetrated over the entire length of the tunnel section, and then the work of improving and reinforcing the ground by boring and pouring is performed from the tunnel.
The work can be done efficiently, unlike when it is performed between excavation work with a face. In addition, when performing work to improve and reinforce the ground, the pit has already penetrated, so it is possible to perform drilling and injection at multiple locations simultaneously in parallel, and an artificial ground arch is quickly created. You.

Since the tunnel is excavated after the artificial ground arch has been formed, the excavation operation can be performed safely, and since the excavation and lining operations are continuously performed on the face, the operation is not complicated. You can excavate efficiently.

If the tunnel is a top tunnel, it is convenient to construct an artificial ground arch on the top when excavating a tunnel by the upper half section advanced construction method. If the pit is an upper half-sidewall pit and the boring bends upward from the pit along the arch of the cross section of the tunnel to the top, it can be applied to upper digging of soft ground.

[0009] It is convenient to perform a full-section excavation if the pit is a side-wall pit and the boring is performed from the pit to the top along the arch of the cross section of the tunnel to the top.

[0010]

FIG. 1 is a cross-sectional view of a large-section tunnel provided with a top tunnel, illustrating one embodiment of the method of the present invention. FIG. 2 is a cross-sectional view of a large-section tunnel provided with a top tunnel. It is a perspective view showing an outline.

When excavating a tunnel 1 having a large cross section, first, a top pit 2 having a width of about 5 m is constructed over an entire length of the section of the tunnel 1 by an excavator such as a tunnel boring machine (TBM) or a horizontal road header (RH). Drill quickly using

[0012] Thereafter, a curved boring is performed from the top shaft 2 along the arch of the cross section of the tunnel 1 using a curved boring device. At this time, a hole is inserted while connecting a steel pipe 3 having a diameter of 270 mm as an injection pipe. The unit steel pipe length is about 1.5 to 2 m, and the joint is joined by a liquid phase diffusion method using an amorphous alloy film. This steel pipe 3
Are provided with holes for injection. The installation interval of the steel pipe 3 in the tunnel excavation direction is 1.5 to 3 depending on the ground conditions.
m.

After the steel pipe 3 is installed, a high-pressure cement-based injection material is injected using a double pipe double packer or the like so that the area of about 2 m outside the ground from the steel pipe 3 has a uniaxial compressive strength σgd> 3 MPa. I do. In this manner, as shown in FIG.
An artificial ground mountain arch 4 is formed in a Bone) shape.

When the formation of the artificial ground arch 4 is completed, the upper half 1A of the tunnel 1 is excavated in 1.5 to 3 m steps at a time. Excavation of the ground up to the strength of 150MPa class is basically done by using a large breaker (Bk) and a horizontal road header (R
H) Mechanical excavation.

Immediately after the excavation, the suspension formwork 6 is advanced, and 40-70 cm thick high-flow rapid-setting concrete mixed with 40-50 kg / m 3 of steel fiber is cast to perform secondary lining of the arch portion 7. Finish.

The lower half 1B is preferably excavated by mechanical excavation, but if necessary, it is used together with loose blasting. Shotcrete 9 and lock bolts 10 are applied to the side wall 8. The lining of the side wall portion 8 and the invert portion 11 is also made of steel fiber reinforced concrete in principle, but the amount of steel fiber is appropriately adjusted.
If necessary, a plastic pipe or the like is previously installed in the upper and lower half joints where the winding is reversed, and a low-viscosity acrylate material or the like is injected later to stop water.

As described above, first, the top tunnel 2 is rapidly excavated and penetrated over the entire length of the section of the tunnel 1, and then the work of improving and reinforcing the ground by boring and pouring is performed from the top tunnel 2. The work can be done efficiently, unlike when it is performed between excavation work with a face. In addition, when the work of improving and reinforcing the ground is performed, since the top shaft 2 has already penetrated, it is possible to perform boring and pouring simultaneously at a plurality of locations at the same time. 4 is created.

Since the tunnel 1 is excavated after the artificial ground arch 4 is formed at a required location, the excavation operation can be performed safely. In addition, the upper half and the lower half are dedicated to each other, and only excavation and lining work are performed continuously at the face, so that the work can be quickly and efficiently excavated without complication.

It is to be noted that, depending on the conditions, the shaft may be a side wall shaft. In this case, a pit is dug into the side wall, and a bend is made from the pit to the top along the arch of the cross section of the tunnel, and a steel pipe is installed and injected. At this time, the positions of the tips of the left and right steel pipes do not necessarily have to match. In this case, since the artificial ground mountain arch is formed from the lower half to the upper half, it is convenient to perform excavation.

[0020]

As described above, according to the construction method of the present invention, it is possible to excavate a large-section tunnel safely and promptly by performing reinforcement improvement of the ground in advance over the entire length of the construction section of the tunnel.

When the pit is a top pit, it is convenient to construct an artificial ground arch on the top when excavating a tunnel by the upper half section advanced construction method. The tunnel is a side wall tunnel,
It is convenient to perform a full-section excavation if the boring is done from the pit to the top along the arch of the cross-section of the tunnel to the top.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a large-section tunnel provided with a top shaft for explaining an embodiment of a method of the present invention.

FIG. 2 is a perspective view showing an outline of a large-section tunnel provided with a top shaft.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tunnel 1A Upper half 1B Lower half 2 Top pit 3 Steel pipe 4 Artificial ground arch 6 Suspended formwork 7 Arch part 8 Side wall part 9 Shotcrete 10 Rock bolt 11 Invert part

Continuing on the front page (72) Inventor Toshio Hayashi 2-5-3 Misakicho, Chiyoda-ku, Tokyo Iron Construction Construction Co., Ltd. (72) Inventor Yoshio Mitarai 2-1 Tsukudocho, Shinjuku-ku, Tokyo Kumagai Gumi Co., Ltd. (72) Inventor Masakazu Ochiai 1-25-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo Taisei Construction Co., Ltd. (72) Inventor Kaji Shigeto 6-3-2 Toyo, Koto-ku, Tokyo Kashima Construction Co., Ltd.Kanto Branch ( 72) Inventor Masato Honda 1-2-3 Otemachi, Chiyoda-ku, Tokyo Mitsui Construction Co., Ltd.

Claims (3)

    [Claims]
  1. Claims: 1. A tunnel is dug and pierced over the entire length of a tunnel section, and then the boring is bent at predetermined intervals along the periphery of the cross section of the tunnel to form an injection pipe in a borehole. The injection material is injected from the injection pipe into the ground around the tunnel to create an artificial ground arch, then the tunnel is excavated, the formwork is advanced, concrete is placed, and the secondary lining is performed. Whale bone method for large section tunnels to be excavated.
  2. 2. The method according to claim 1, wherein the shaft is a top shaft.
  3. 3. The method according to claim 1, wherein the shaft is a side shaft shaft.
JP32853197A 1997-11-28 1997-11-28 Whale bone method for large section tunnel Expired - Fee Related JP3824114B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP32853197A JP3824114B2 (en) 1997-11-28 1997-11-28 Whale bone method for large section tunnel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP32853197A JP3824114B2 (en) 1997-11-28 1997-11-28 Whale bone method for large section tunnel
PCT/JP1998/001302 WO1999028595A1 (en) 1997-11-28 1998-03-25 Whale skeleton construction method for tunnel having large section

Publications (2)

Publication Number Publication Date
JPH11159275A true JPH11159275A (en) 1999-06-15
JP3824114B2 JP3824114B2 (en) 2006-09-20

Family

ID=18211338

Family Applications (1)

Application Number Title Priority Date Filing Date
JP32853197A Expired - Fee Related JP3824114B2 (en) 1997-11-28 1997-11-28 Whale bone method for large section tunnel

Country Status (2)

Country Link
JP (1) JP3824114B2 (en)
WO (1) WO1999028595A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000032906A1 (en) * 1998-11-27 2000-06-08 Shigeki Nagatomo Sardine-bone construction method for large-section tunnel
JP2007303156A (en) * 2006-05-11 2007-11-22 Shimizu Corp Shield roof construction method
JP2010013933A (en) * 2009-10-19 2010-01-21 Kajima Corp Member construction method and constructed member
CN103670426A (en) * 2013-12-31 2014-03-26 四川川煤华荣能源股份有限公司花山煤矿 Large-inclination-angle and large-section roadway construction method
CN103711493A (en) * 2013-12-27 2014-04-09 中国神华能源股份有限公司 Method for determining thickness of safety top plate in down-traversing gob by tunnel
CN104265301A (en) * 2014-07-23 2015-01-07 上海隧道工程股份有限公司 Rectangular pipe jacking large-angle obliquely crossing in-tunnel construction method
CN104653228A (en) * 2015-01-20 2015-05-27 卢春林 Shallow underground excavation tunnel temporary support detaching equipment and method
CN106703816A (en) * 2016-12-23 2017-05-24 四川川煤华荣能源股份有限公司 Hole cutting and slope expansion construction technology for fully-mechanized working face of complex coal bed

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102562092B (en) * 2012-01-31 2013-11-20 西南交通大学 Testing container for tunnel lining model
CN103244147B (en) * 2013-05-14 2014-12-17 中铁二十一局集团第四工程有限公司 Construction method for locking anchor tubes of tunnel anchor-plate retaining steel frames
CN104895575A (en) * 2015-06-03 2015-09-09 福建工程学院 High-efficiency rapid construction method for upper-soft lower-hard formation large-section tunnels
CN105401948B (en) * 2015-10-29 2018-07-17 中铁二局集团有限公司 Plateau Cold Area tunnel both sides loose media stratum construction method after a kind of macroseism
CN106869943B (en) * 2017-02-10 2018-08-17 西南交通大学 The subway tunnel error resilience for passing through active fault moves the construction method of secondary liner structure
CN109139046A (en) * 2018-08-23 2019-01-04 洛阳恒诺锚固技术有限公司 Segmenting slip casting self-drilling type barrel vault advanced support method
CN110259456B (en) * 2019-05-21 2020-08-18 中交一公局集团有限公司 Karst cave treatment method for tunnel construction

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0617590A (en) * 1991-01-14 1994-01-25 Konoike Constr Ltd Excavating method for tunnel
JP2551506B2 (en) * 1991-07-16 1996-11-06 株式会社フジタ Construction method of arch shell in tunnel precedent
JPH06264698A (en) * 1993-03-17 1994-09-20 Mitsui Constr Co Ltd Method for constructing tunnel
JP2597298B2 (en) * 1993-09-06 1997-04-02 アイサワ工業株式会社 Preceding method for the ground in front of the tunnel face
JP3155471B2 (en) * 1996-08-05 2001-04-09 山九株式会社 Tunnel construction method and tunnel support structure

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000032906A1 (en) * 1998-11-27 2000-06-08 Shigeki Nagatomo Sardine-bone construction method for large-section tunnel
US6520718B1 (en) 1998-11-27 2003-02-18 Shigeki Nagatomo, Et Al. Sardine-bone construction method for large-section tunnel
JP2007303156A (en) * 2006-05-11 2007-11-22 Shimizu Corp Shield roof construction method
JP2010013933A (en) * 2009-10-19 2010-01-21 Kajima Corp Member construction method and constructed member
CN103711493A (en) * 2013-12-27 2014-04-09 中国神华能源股份有限公司 Method for determining thickness of safety top plate in down-traversing gob by tunnel
CN103670426A (en) * 2013-12-31 2014-03-26 四川川煤华荣能源股份有限公司花山煤矿 Large-inclination-angle and large-section roadway construction method
CN104265301A (en) * 2014-07-23 2015-01-07 上海隧道工程股份有限公司 Rectangular pipe jacking large-angle obliquely crossing in-tunnel construction method
CN104653228A (en) * 2015-01-20 2015-05-27 卢春林 Shallow underground excavation tunnel temporary support detaching equipment and method
CN106703816A (en) * 2016-12-23 2017-05-24 四川川煤华荣能源股份有限公司 Hole cutting and slope expansion construction technology for fully-mechanized working face of complex coal bed

Also Published As

Publication number Publication date
JP3824114B2 (en) 2006-09-20
WO1999028595A1 (en) 1999-06-10

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