CN108589776A - Tunnel open excavation half reversed construction method in river is worn under one kind - Google Patents

Tunnel open excavation half reversed construction method in river is worn under one kind Download PDF

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Publication number
CN108589776A
CN108589776A CN201810400068.7A CN201810400068A CN108589776A CN 108589776 A CN108589776 A CN 108589776A CN 201810400068 A CN201810400068 A CN 201810400068A CN 108589776 A CN108589776 A CN 108589776A
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CN
China
Prior art keywords
plate
river
tunnel
construction
enclosure
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.)
Pending
Application number
CN201810400068.7A
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Chinese (zh)
Inventor
沈碧辉
彭加强
闫自海
熊松
陈娟
刘长宝
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Powerchina Huadong Engineering Corp Ltd
Original Assignee
Powerchina Huadong Engineering Corp Ltd
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 Powerchina Huadong Engineering Corp Ltd filed Critical Powerchina Huadong Engineering Corp Ltd
Priority to CN201810400068.7A priority Critical patent/CN108589776A/en
Publication of CN108589776A publication Critical patent/CN108589776A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/06Constructions, or methods of constructing, in water
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/40Protecting water resources
    • Y02A20/402River restoration

Abstract

Wear tunnel open excavation half reversed construction method in river under one kind, step 1, in river bed construction foundation pit enclosure wall is arranged Guan Liang going along with sb. to guard him coping, excavates the river bed soil body to ceiling location;Step 2 pours tunnel structure top plate in ceiling location, and top plate forms iterative structure with enclosure wall;Step 3 applies waterproof layer above top plate, two side flangings of waterproof layer to Guan Liang bottom;Step 4 is laid with protective layer in the top of waterproof layer, and waterproof insulation blanket is arranged in the top of protective layer;Step 5, from the soil body below adjacent excavation of foundation pit top plate to foundation pit bottom;Step 6 pours bottom plate and side wall respectively, and construction is completed.It is shorter to solve river dry season, it is desirable that open trench tunnel construct fast quick-recovery river the problem of;Using multiple tracks water proof safeguard procedures, soil excavation and structure below top plate is avoided to pour period river water infiltration;Enclosure wall forms iterative structure with internal structure, and whole stress reduces structure uneven subsidence, reduces construction risk.

Description

Tunnel open excavation half reversed construction method in river is worn under one kind
Technical field
The present invention relates to tunnel open excavation half adverse construction method side in river is worn under a kind of method for tunnel construction more particularly to one kind Method.
Background technology
It need to generally ensure that river water flow section, usual way are within river dry season when wearing river construction under open trench tunnel Tunnel is built using Open Cut Method, the wet season restores river water flowing, but when dry season, the time was shorter, is applied in dry season tunnel Work does not complete, and there are problems that river can not be restored in time in the wet season.
Invention content
The object of the present invention is to provide tunnel open excavation half reversed construction method in river is worn under one kind.Therefore, the present invention uses Following technical scheme.
Tunnel open excavation half reversed construction method in river is worn under one kind, the described method comprises the following steps:
Step 1, in river bed construction foundation pit enclosure wall, Guan Liang is set in the coping of going along with sb. to guard him, excavates the river bed soil body to tunnel Structure roof position;
Step 2 pours tunnel structure top plate in the tunnel structure ceiling location, and the top plate forms overlapping knot with enclosure wall Structure;
Step 3 applies waterproof layer above the top plate, two side flangings of the waterproof layer to the Guan Liang bottom;
Step 4 is laid with protective layer in the top of the waterproof layer, and waterproof insulation blanket is arranged in the top of the protective layer, described The both sides of waterproof insulation blanket wrap the Guan Liang;
Step 5 carries out earthing above the waterproof insulation blanket, restores river, from adjacent excavation of foundation pit top plate below the soil body to Foundation pit bottom;
Step 6 pours tunnel structure bottom plate and tunnel structure side wall respectively, the bottom plate and the side wall with the enclosure wall Iterative structure is formed, construction is completed.
Preferably, the enclosure wall, top plate and bottom plate and side wall are reinforced concrete structure.
Preferably, the top plate and bottom plate is connect with the reinforcing bar of the enclosure wall by reinforcing bar connector, forms one.
Preferably, the protective layer is microlith element concrete structure.
Preferably, the thickness of the protective layer is not less than 0.3 meter.
The beneficial effects of the invention are as follows:It is shorter to solve river dry season, it is desirable that the fast quick-recovery river of open trench tunnel construction The problem of;Wet season river water is avoided to flood the risk of open-cut foundation ditch;Using multiple tracks water proof safeguard procedures, the soil body below top plate is avoided It excavates and structure pours period river water and penetrates into;Enclosure wall forms iterative structure with internal structure, and enclosure wall is whole with internal structure Stress can reduce structure uneven subsidence, reduce construction risk.
Description of the drawings
Fig. 1 is tunnel structure schematic diagram in the present invention.
Reference sign:1, enclosure wall;2, top plate;3, Guan Liang;4, waterproof layer;5, protective layer;6, waterproof insulation blanket;7、 The river bed soil body;8, bottom plate;9, side wall.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
Tunnel open excavation half reversed construction method in river is worn under one kind, is included the following steps:Step 1, in river bed construction foundation pit Enclosure wall 1 is arranged Guan Liang 3 going along with sb. to guard him coping, excavates the river bed soil body 7 to tunnel structure ceiling location.Step 2, in tunnel Structure roof position pours tunnel structure top plate 2, and top plate 2 forms iterative structure with enclosure wall 1.Step 3 applies above top plate Waterproof layer 4, to Guan Liang bottom, waterproof layer needs to meet level-one waterproofing grade requirement two side flangings of waterproof layer.Step 4 is being prevented The top of water layer is laid with protective layer 5, and protective layer can be microlith element concrete structure, and the thickness of protective layer is not less than 0.3 meter, is protecting The top setting waterproof insulation blanket 6 of layer, the both sides of waterproof insulation blanket wrap Guan Liang, setting waterproof insulation blanket use multiple tracks every Water safeguard procedures avoid soil excavation and structure below top plate from pouring period river water infiltration, and the both sides of waterproof insulation blanket wrap Guan Liang avoids river water from being penetrated by gap.Step 5 carries out earthing above waterproof insulation blanket, restores river, is opened from Adjacent Pit Digging the soil body below top plate can carry out in the case of river recovery water flowing or river not water flowing below excavation top plate to foundation pit bottom The construction of the soil body.Step 6 pours tunnel structure bottom plate 8 and tunnel structure side wall 9 respectively, bottom plate and side wall with enclosure wall shape At iterative structure, construction is completed.Enclosure wall forms iterative structure with top plate, and strengthens the vertical bearing capacity of enclosure wall, encloses The amount of reinforcement of revetment is higher than the amount of reinforcement of common enclosure wall by 5% ~ 10%, applying when reducing soil excavation below top plate Work risk.Enclosure wall, top plate and bottom plate and side wall are reinforced concrete structure, the reinforcing bar of top plate and bottom plate and side wall with go along with sb. to guard him The reinforcing bar of wall connects to form iterative structure by reinforcing bar connector, and enclosure wall forms iterative structure, i.e. enclosure wall with internal structure It is respectively formed iterative structure with top plate and bottom plate and side wall, one, enclosure wall and internal structure entirety stress is formed, structure can be reduced Uneven subsidence reduces construction risk.The tunnel structure that half reversed construction method of open cut applies is as described in Figure 1.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe The personage for knowing this technology can all carry out modifications and changes to above-described embodiment without violating the spirit and scope of the present invention.Cause This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as At all equivalent modifications or change, should by the present invention claim be covered.

Claims (5)

1. wearing tunnel open excavation half reversed construction method in river under one kind, which is characterized in that the described method comprises the following steps:
Step 1, in river bed construction foundation pit enclosure wall, Guan Liang is set in the coping of going along with sb. to guard him, excavates the river bed soil body to tunnel Structure roof position;
Step 2 pours tunnel structure top plate in the tunnel structure ceiling location, and the top plate forms overlapping knot with enclosure wall Structure;
Step 3 applies waterproof layer above the top plate, two side flangings of the waterproof layer to the Guan Liang bottom;
Step 4 is laid with protective layer in the top of the waterproof layer, and waterproof insulation blanket is arranged in the top of the protective layer, described The both sides of waterproof insulation blanket wrap the Guan Liang;
Step 5 carries out earthing above the waterproof insulation blanket, restores river, from adjacent excavation of foundation pit top plate below the soil body to Foundation pit bottom;
Step 6 pours tunnel structure bottom plate and tunnel structure side wall respectively, the bottom plate and the side wall with the enclosure wall Iterative structure is formed, construction is completed.
2. wearing half reversed construction method of river tunnel open excavation under one kind according to claim 1, which is characterized in that described to enclose Revetment, top plate and bottom plate and side wall are reinforced concrete structure.
3. wearing half reversed construction method of river tunnel open excavation under one kind according to claim 2, which is characterized in that the top Plate, bottom plate are connect with the reinforcing bar of the enclosure wall by reinforcing bar connector, and one is formed.
4. wearing half reversed construction method of river tunnel open excavation under one kind according to claim 1, which is characterized in that the guarantor Sheath is microlith element concrete structure.
5. wearing half reversed construction method of river tunnel open excavation under one kind according to claim 1 or 4, which is characterized in that institute The thickness for stating protective layer is not less than 0.3 meter.
CN201810400068.7A 2018-04-28 2018-04-28 Tunnel open excavation half reversed construction method in river is worn under one kind Pending CN108589776A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810400068.7A CN108589776A (en) 2018-04-28 2018-04-28 Tunnel open excavation half reversed construction method in river is worn under one kind

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810400068.7A CN108589776A (en) 2018-04-28 2018-04-28 Tunnel open excavation half reversed construction method in river is worn under one kind

Publications (1)

Publication Number Publication Date
CN108589776A true CN108589776A (en) 2018-09-28

Family

ID=63619250

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810400068.7A Pending CN108589776A (en) 2018-04-28 2018-04-28 Tunnel open excavation half reversed construction method in river is worn under one kind

Country Status (1)

Country Link
CN (1) CN108589776A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110410083A (en) * 2019-08-16 2019-11-05 招商局重庆交通科研设计院有限公司 Hazy tunnel method
CN111749275A (en) * 2020-06-23 2020-10-09 中国建筑第二工程局有限公司 Cover-excavation top-down underground passage structure and construction method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110410083A (en) * 2019-08-16 2019-11-05 招商局重庆交通科研设计院有限公司 Hazy tunnel method
CN110410083B (en) * 2019-08-16 2021-02-09 招商局重庆交通科研设计院有限公司 Semi-bright and semi-dark tunnel entering method
CN111749275A (en) * 2020-06-23 2020-10-09 中国建筑第二工程局有限公司 Cover-excavation top-down underground passage structure and construction method thereof

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