CN105888696A - Construction method of large-section tunnel - Google Patents
Construction method of large-section tunnel Download PDFInfo
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- CN105888696A CN105888696A CN201610518295.0A CN201610518295A CN105888696A CN 105888696 A CN105888696 A CN 105888696A CN 201610518295 A CN201610518295 A CN 201610518295A CN 105888696 A CN105888696 A CN 105888696A
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- 238000010276 construction Methods 0.000 title claims abstract description 124
- 238000009412 basement excavation Methods 0.000 claims abstract description 53
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 18
- 239000004567 concrete Substances 0.000 claims description 9
- 239000011150 reinforced concrete Substances 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 238000013316 zoning Methods 0.000 abstract 1
- 238000007363 ring formation reaction Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to the technical field of tunnel construction, in particular to a construction method of a large-section tunnel. The construction method comprises the following steps: zoning a section of a tunnel, wherein the section of the tunnel is zoned into a left upper zone, a left middle zone, a left lower zone, a middle upper zone, a middle middle zone, a middle lower zone, a right upper zone, a right middle zone and a right lower zone according to the upper-middle-lower direction and the left-middle-right direction; during excavation construction on the nine zones, firstly carrying out the excavation construction on zones at the left side and the right side of the tunnel, wherein the excavation construction is carried out on the zones at the left side and the right side of the tunnel from top to bottom, and primary support is carried out in time; then carrying out the excavation construction on the zones at the middle part of the tunnel, wherein the excavation construction is carried out on the zones at the middle part of the tunnel from top to bottom, and primary support is carried out in time. A closed loop is formed as section steel supporting frames are arranged around the outlines of all the zones, so that the structure of the tunnel is stable, safety construction can be ensured, the cost of temporary engineering is reduced, all zones can be subjected to synchronous construction, the operation of various machines is facilitated, the working efficiency is increased, the construction progress is quickened, and the construction of accessory structures such as an entrance/exit and an air duct is convenient.
Description
Technical field
The present invention relates to technical field of tunnel construction, be specifically related to the construction method in tunnel, a kind of heavy in section.
Background technology
During urban subway tunnel construction, for guaranteeing safety and the speed of application of constructing tunnel, general employing is divided
Region, staged method for digging, in prior art, the division of the excavation regions in tunnel, it is usually and from top to bottom marks off
The step of horizontal direction, when excavating construction, the region divided in the horizontal direction from top to bottom carries out excavating construction, by up to
Lower excavation stepped, and pushing ahead, although the construction in super-section tunnel of the prior art can carry progressively
The digging efficiency in high tunnel, but, above-mentioned region divides and there will be irrational phenomenon, excavates suitable according to above-below direction
It is more that sequence construction interferes situation, and the construction causing overall tunnel is the slowest, and in the case of interfering construction,
Also can there is certain potential safety hazard.
Summary of the invention
It is an object of the invention to provide a kind of Stability Analysis of Structures, safety, heavy in section method for tunnel construction that efficiency is high, add
The construction speed in fast tunnel, heavy in section.
For achieving the above object, the technical solution used in the present invention is:
A kind of construction method in tunnel, heavy in section, it is characterised in that:
A, cross section to tunnel carry out subregion, according to direction, upper, middle and lower and direction, left, center, right be divided into top left region,
Left region, lower left region, in upper region, in region, in lower region, right regions, right region and bottom right district
Territory；
When B, the excavation in above-mentioned 9 regions are constructed, the first arranged on left and right sides region to tunnel carries out excavating construction, and
Time arranged on left and right sides region is carried out preliminary bracing；
C, zone line to tunnel carry out excavating construction, and the zone line in tunnel from top to bottom carries out excavating construction, and
Time zone line is carried out preliminary bracing.
The attachment feature that present method invention there is also is:
Construction procedure in described step B is as follows:
A), first to top left region carrying out excavating construction, the outline perimeter in top left region carries out preliminary bracing construction；
B), when top left region is excavated forward and constructed 5～10m, synchronize to carry out the excavation construction of right regions, on the right side
When the excavation in upper region is constructed, carry out preliminary bracing construction at left region contour periphery；
C), when top left region is excavated forward and constructed 5～10m, synchronize to carry out the excavation construction in left region, on a left side
Middle region (during excavation construction, carries out preliminary bracing construction at left region contour periphery；
D), when right regions is excavated forward and constructed 5～10m, synchronize to carry out the excavation construction in right region, on the right side
When the excavation in middle region is constructed, carry out preliminary bracing construction at right region contour periphery；
E), when left region is excavated forward and constructed 5～10m, synchronize to carry out the excavation construction of lower left region, on a left side
When the excavation in lower region is constructed, carry out preliminary bracing construction in lower left region outline perimeter；
F), when right region is excavated forward and constructed 5～10m, synchronize to carry out the excavation construction of lower right area, on the right side
When the excavation in lower region is constructed, carry out preliminary bracing construction in lower right area outline perimeter.
Construction procedure in described step C is as follows:
A1), when lower right area is excavated forward and has been constructed 25～35m, the excavation construction in upper region in synchronizing to carry out,
In the excavation construction in upper region time, on top, region carry out preliminary bracing construction；
B1), on region excavate forward constructed 5～10m time, synchronize carry out in region excavation construction；
C1), in region excavate forward constructed 5～10m time, the excavation construction in lower region in synchronizing to carry out, in
During the excavation construction in lower region, in lower sections bottom carry out preliminary bracing construction.
Carry out top left region, left region, lower left region, on region, in region, in lower region, upper right district
When the excavation of territory, right region and lower right area is constructed, reserving reserve settlement, reserve settlement uses mixed with two linings
Solidifying soil with the concrete of label and completes with described two lining once-pouring of concretes.
When lower region is excavated forward and constructed 5～15m in, first carry out the construction propped up at the beginning of inverted arch, then remove and be positioned at tunnel
Shape steel support in the cavity area of cross section, road, finally carries out inverted arch two and serves as a contrast the construction of reinforced concrete floor.
The preliminary bracing of the outline perimeter in described tunnel is permanent supporting, and the initial stage being positioned at cross section, tunnel cavity area props up
Protect as temporary supporting, described in upper region, in region, in two side profile that constitute of lower region from top to bottom extend also
And in arc shaped.
Compared with prior art, the technique effect that the present invention possesses is: large section is divided into nine regions by the present invention, respectively
Piecemeal has carried out rational adjustment according to execution conditions.Such as mechanical work for convenience, by top left region portion, right regions
Portion is directly divided to station hall layer；Such as the construction safety for region upper in guaranteeing, by upper region portion construction height be divided into
2.5m.The each region of the present invention each cyclization so that the Stability Analysis of Structures in tunnel, and can ensure that safe construction, and above-mentioned gradually
Enter formula circulation form of construction work, accelerate the turnover of temporary support, and then decrease the input of temporary support, reduce interim
The cost of engineering.Each region can synchronize to construct, and the operation of the most various machineries improves work efficiency, accelerates
Construction speed, facilitates the construction of the accessory structures such as each gateway, air channel.
Accompanying drawing explanation
Fig. 1 is the heavy in section tunnel excavation section branch schematic diagram in the inventive method implementation process；
Fig. 2 is 9 the method construction way cross-sectional views of heavy in section tunnel and Double side wall drift in the inventive method implementation process；
Fig. 3 is 9 method sequence of construction skiagraphs of heavy in section tunnel and Double side wall drift in the inventive method implementation process.
Detailed description of the invention
In conjunction with Fig. 1 to Fig. 3, the present invention is further described:
A kind of construction method in tunnel, heavy in section, it is characterised in that:
A, cross section to tunnel 10 carry out subregion, are divided into upper left district according to direction, upper, middle and lower and direction, left, center, right
Territory 11, left region 12, lower left region 13, in upper region 14, in region 15, in lower region 16, upper right district
Territory 17, right region 18 and lower right area 19；
When B, the excavation in above-mentioned 9 regions are constructed, the first arranged on left and right sides region to tunnel 10 carries out excavating construction,
In time arranged on left and right sides region is carried out preliminary bracing；
C, zone line to tunnel 10 carry out excavating construction, and the zone line in tunnel 10 from top to bottom carries out excavation to be executed
Work, carries out preliminary bracing to arranged on left and right sides region in time.
Large section is divided into nine regions by the present invention, and each piecemeal has carried out rational adjustment according to execution conditions, as in order to
Facilitate mechanical work, top left region 11, right regions 17 are directly divided to station hall layer；As for guaranteeing Zhong Shang district
The construction safety that territory is 14, by upper region 14 construction height be divided into 2.5m.The each region of the present invention each cyclization,
Make the Stability Analysis of Structures in tunnel, and can ensure that safe construction, and above-mentioned gradual circulation form of construction work, accelerate interim
The turnover supported, and then decrease the input of temporary support, reduce the cost of temporary project.Each region can synchronize to carry out
Construction, the operation of the most various machineries, improve work efficiency, accelerate construction speed, facilitate each gateway, wind
The construction of the accessory structures such as road.
Construction procedure in described step B is as follows:
A), first to top left region 11 carrying out excavating construction, the outline perimeter initial stage of carrying out in top left region 11 props up in time
Protect construction；
B), when top left region 11 is excavated forward and constructed 5～10m, synchronize to carry out the excavation construction of right regions 17,
When the excavation of right regions 17 is constructed, carry out preliminary bracing construction in left region 17 outline perimeter in time；
C), when top left region 11 is excavated forward and constructed 5～10m, synchronize to carry out the excavation construction in left region 12,
When excavation in left region 12 is constructed, carry out preliminary bracing construction in left region 12 outline perimeter in time；
D), when right regions 17 is excavated forward and constructed 5～10m, synchronize to carry out the excavation construction in right region 18,
When excavation in right region 18 is constructed, carry out preliminary bracing construction in right region 18 outline perimeter in time；
E), in left region 12 excavate forward when having constructed 5～10m, synchronize to carry out the excavation construction of lower left region 13,
When excavation in lower left region 13 is constructed, carry out preliminary bracing construction in lower left region 13 outline perimeter in time；
F), in right region 18 excavate forward when having constructed 5～10m, synchronize to carry out the excavation construction of lower right area 19,
When the excavation of lower right area 19 is constructed, carry out preliminary bracing construction in lower right area 19 outline perimeter in time.
Construction procedure in described step C is as follows:
A1), when lower right area 19 is excavated forward and constructed 25～35m, in synchronizing to carry out, the excavation in upper region 14 is executed
Work, on region 14 excavation construction time, in time on top, region 14 carry out preliminary bracing construction；
B1), on region 14 excavate forward constructed 5～10m time, synchronize carry out in region 15 excavation construction；
C1), in region 15 excavates forward constructed 5～10m time, in synchronizing to carry out, the excavation in lower region 16 is constructed,
During the excavation construction in lower region 16, in time in carry out preliminary bracing construction bottom lower region 16.
Carry out top left region 11, left region 12, lower left region 13, on region 14, in region 15, in
When the excavation of lower region 16, right regions 17, right region 18 and lower right area 19 is constructed, reserve reserved sinking
Amount 10a, reserve settlement 10a use with two lining concrete with label concrete and with described two serve as a contrast concrete disposable
Pour.
When lower region 16 is excavated forward and constructed 5～15m in, first carry out the construction of a 10e at the beginning of inverted arch, then tear open
Remove the shape steel support being positioned at cross section, tunnel 10 cavity area, finally carry out inverted arch two and serve as a contrast reinforced concrete floor 10b's
Construction.
Described inverted arch two serves as a contrast the construction of reinforced concrete floor 10b one-piece casting, and inverted arch two serves as a contrast reinforced concrete floor 10b and abutment wall
And arch two serves as a contrast and has demarcation line 10d between concrete layer 10c.
Described inverted arch two serve as a contrast reinforced concrete floor 10b construct forward 25～35m time, synchronize to carry out abutment wall and arch two lining be mixed
The construction of solidifying soil layer 10c, abutment wall and arch two serve as a contrast concrete layer 10c and use integral trolley construction, in integral trolley bottom
Keep vehicle smooth.
The preliminary bracing of the outline perimeter in described tunnel 10 is permanent supporting, is positioned at cross section, tunnel 10 cavity area
Preliminary bracing is temporary supporting, described in upper region 14, in region 15, in two side profile that constitute of lower region 16
From top to bottom extend and in arc shaped.Above-mentioned zone is that arcuation extends such that it is able to guarantees the intensity of tunnel support, enters
And guarantee the safety of construction.
Claims (6)
1. the construction method in tunnel, a heavy in section, it is characterised in that:
A, cross section to tunnel (10) carry out subregion, are divided into a left side according to direction, upper, middle and lower and direction, left, center, right
Upper region (11), left region (12), lower left region (13), in upper region (14), in region (15), in
Lower region (16), right regions (17), right region (18) and lower right area (19)；
B, above-mentioned 9 regions excavation construction time, the first arranged on left and right sides region to tunnel (10) carries out excavation and executes
Work, carries out preliminary bracing to arranged on left and right sides region in time；
C, zone line to tunnel (10) carry out excavating construction, and the zone line of tunnel (10) is from top to bottom carried out
Excavate construction, in time arranged on left and right sides region is carried out preliminary bracing.
The construction method in tunnel, heavy in section the most according to claim 1, it is characterised in that: in described step B
Construction procedure is as follows:
A), first to top left region (11) carrying out excavating construction, the outline perimeter in top left region (11) carries out the initial stage
Supporting construction；
B), when top left region (11) is excavated forward and constructed 5～10m, synchronize to carry out digging of right regions (17)
Pick construction, when the excavation of right regions (17) is constructed, carries out preliminary bracing in left region (17) outline perimeter and executes
Work；
C), when top left region (11) is excavated forward and constructed 5～10m, synchronize to carry out digging of left region (12)
Pick construction, when the excavation of left region (12) is constructed, carries out preliminary bracing in left region (12) outline perimeter and executes
Work；
D), when right regions (17) is excavated forward and constructed 5～10m, synchronize to carry out digging of right region (18)
Pick construction, when the excavation of right region (18) is constructed, carries out preliminary bracing in right region (18) outline perimeter and executes
Work；
E), when left region (12) are excavated forward and constructed 5～10m, synchronize to carry out digging of lower left region (13)
Pick construction, when the excavation of lower left region (13) is constructed, carries out preliminary bracing in lower left region (13) outline perimeter and executes
Work；
F), when right region (18) are excavated forward and constructed 5～10m, synchronize to carry out digging of lower right area (19)
Pick construction, when the excavation of lower right area (19) is constructed, carries out preliminary bracing in lower right area (19) outline perimeter and executes
Work.
The construction method in tunnel, heavy in section the most according to claim 2, it is characterised in that: in described step C
Construction procedure is as follows:
A1), when lower right area (19) is excavated forward and has been constructed 25～35m, upper region (14) in synchronizing to carry out
Excavate construction, on region (14) excavation construction time, on region (14) top carry out preliminary bracing construction；
B1), on region (14) excavate forward constructed 5～10m time, in synchronizing to carry out in the digging of region (15)
Pick construction；
C1), in region (15) excavates forward constructed 5～10m time, in synchronizing to carry out, time region (16) digs
Pick construction, in the excavation construction in lower region (16) time, in bottom, lower region (16) carry out preliminary bracing construction.
The construction method in tunnel, heavy in section the most according to claim 3, it is characterised in that: carrying out top left region
(11), left region (12), lower left region (13), in upper region (14), in region (15), in lower region
(16), right regions (17), right region (18) and lower right area (19) excavation construction time, reserve reserved
The amount of sinking (10a), reserve settlement (10a) uses and two lining concrete with the concrete of label and mix with described two linings
Solidifying soil primary concreting completes.
The construction method in tunnel, heavy in section the most according to claim 3, it is characterised in that: lower region (16) in
Excavate forward when having constructed 5～15m, first carry out at the beginning of inverted arch the construction of (10e), then remove and be positioned at tunnel (10)
Shape steel support in the cavity area of cross section, finally carries out inverted arch two and serves as a contrast the construction of reinforced concrete floor (10b).
6. according to the construction method in the tunnel, heavy in section described in claim 1 to 5 any one, it is characterised in that: institute
The preliminary bracing of the outline perimeter stating tunnel (10) is permanent supporting, is positioned at tunnel (10) cross section cavity area
Preliminary bracing is temporary supporting, described in upper region (14), in region (15), in lower region (16) constitute
Two side profile from top to bottom extend and in arc shaped.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610518295.0A CN105888696A (en) | 2016-06-30 | 2016-06-30 | Construction method of large-section tunnel |
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| CN201610518295.0A CN105888696A (en) | 2016-06-30 | 2016-06-30 | Construction method of large-section tunnel |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401591A (en) * | 2016-12-07 | 2017-02-15 | 中铁四局集团有限公司 | Small-angle bottom-penetrating construction method of highway grid tunnel |
| CN107130967A (en) * | 2017-06-08 | 2017-09-05 | 重庆工程职业技术学院 | The construction method of extra-large cross-section deep tunnel and accessory structure |
| CN108361036A (en) * | 2018-03-14 | 2018-08-03 | 北京市政路桥股份有限公司 | A kind of construction method that subway station accessory structure is plug-in |
| CN109751063A (en) * | 2019-02-26 | 2019-05-14 | 中铁第四勘察设计院集团有限公司 | A kind of large section tunnel supporting construction and its construction method |
| CN112412492A (en) * | 2020-11-30 | 2021-02-26 | 华侨大学 | Deformation control supporting structure for tunnel with ultra-large section |
| CN113339012A (en) * | 2021-07-07 | 2021-09-03 | 中建八局第二建设有限公司 | Construction method of ultra-wide section tunnel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401591A (en) * | 2016-12-07 | 2017-02-15 | 中铁四局集团有限公司 | Small-angle bottom-penetrating construction method of highway grid tunnel |
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| CN107130967A (en) * | 2017-06-08 | 2017-09-05 | 重庆工程职业技术学院 | The construction method of extra-large cross-section deep tunnel and accessory structure |
| CN107130967B (en) * | 2017-06-08 | 2019-01-01 | 重庆工程职业技术学院 | The construction method of extra-large cross-section deep tunnel and accessory structure |
| CN108361036A (en) * | 2018-03-14 | 2018-08-03 | 北京市政路桥股份有限公司 | A kind of construction method that subway station accessory structure is plug-in |
| CN109751063A (en) * | 2019-02-26 | 2019-05-14 | 中铁第四勘察设计院集团有限公司 | A kind of large section tunnel supporting construction and its construction method |
| CN112412492A (en) * | 2020-11-30 | 2021-02-26 | 华侨大学 | Deformation control supporting structure for tunnel with ultra-large section |
| CN112412492B (en) * | 2020-11-30 | 2022-07-29 | 华侨大学 | Deformation control supporting structure for tunnel with ultra-large section |
| CN113339012A (en) * | 2021-07-07 | 2021-09-03 | 中建八局第二建设有限公司 | Construction method of ultra-wide section tunnel |
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Application publication date: 20160824 |